Models
KM-320MAH, MWH
KM-340MAH, MWH
KM-515MAH, MWH, MRH
KM-600MAH
KM-650MAH, MWH, MRH
KM-901MAH, MWH, MRH/3
KM-1100MAH, MWH, MRH
KM-1340MAH, MWH, MRH/3
KM-1601MRH/3
Modular Crescent Cuber
Service Manual
Number: 73196
Issued: 4-29-2013
Revised: 9-21-2016
hoshizakiamerica.com
2
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No service should be undertaken until
the technician has thoroughly read this Service Manual. Failure to service and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage. Proper installation is the
responsibility of the installer. Product failure or property damage due to improper
installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: 1-800-233-1940; (770) 487-2331
Fax: 1-800-843-1056; (770) 487-3360
E-mail: techsuppor[email protected]
HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
Web Site: www.hoshizaki.com
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.
3
CONTENTS
Important Safety Information ................................................................................................. 6
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 8
A. Construction .................................................................................................................. 8
1. Air-Cooled Models (MAH) ........................................................................................ 8
2. Water-Cooled Models (MWH) .................................................................................. 9
3. Remote Models (MRH/3) ....................................................................................... 10
B. Water/Refrigeration Circuit Diagram .............................................................................11
1. Air-Cooled Models (MAH) .......................................................................................11
2. Water-Cooled Models (MWH) ................................................................................ 12
3. Remote Models (MRH/3) ....................................................................................... 13
II. Sequence of Operation and Service Diagnosis ............................................................... 14
A. Sequence of Operation Flow Chart ............................................................................. 14
1. "E" and "G" Control Board without Harvest Pump Timer Operation ....................... 14
2. "G" Control Board with Harvest Pump Timer Operation ....................................... 16
B. Service Diagnosis ....................................................................................................... 17
1. "E" and "G" Control Board without Harvest Pump Timer Diagnosis ....................... 18
2. "G" Control Board with Harvest Pump Timer Diagnosis ........................................ 24
C. Control Board Check ................................................................................................... 30
D. Bin Control Check ....................................................................................................... 31
1. Thermostatic Bin Control Check ............................................................................ 31
2. Mechanical Bin Control Check and Cleaning ....................................................... 32
E. Float Switch Check and Cleaning ............................................................................... 34
1. Float Switch Check ................................................................................................ 34
2. Float Switch Cleaning ............................................................................................ 35
F. Thermistor Check ......................................................................................................... 36
G. Diagnostic Tables ........................................................................................................ 37
III. Controls and Adjustments ............................................................................................... 41
A. Control Board Layout .................................................................................................. 42
1. "E" Control Board .................................................................................................. 42
2. "G" Control Board ................................................................................................. 43
B. LED Lights and Audible Alarm Safeties ....................................................................... 44
1. "E" Control Board .................................................................................................. 44
2. "G" Control Board ................................................................................................. 45
C. Settings and Adjustments ............................................................................................ 46
1. Default Dip Switch Settings .................................................................................... 46
a) "E" and "G" Control Board without Harvest Pump Timer Operation .................. 46
b) "G" Control Board with Harvest Pump Timer Operation .................................... 46
2. Harvest Timer (S4 dip switch 1 & 2) ...................................................................... 46
3. Pump-Out Timer (S4 dip switch 3 & 4) .................................................................. 47
4. Pump-Out Frequency Control (S4 dip switch 5 & 6) .............................................. 48
IMPORTANT
This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
4
5. Bin Control Selector or Harvest Pump Timer Operation (S4 dip switch 7) ............. 48
6. Factory Use (S4 dip switch 8) ................................................................................ 49
7. Freeze Timer (S4 dip switch 9 & 10) ....................................................................... 49
8. Float Switch Selector (S5 dip switch 1): "G" Control Board ................................... 50
9. Rell Counter (S5 dip switch 2 through 5): "G" Control Board ............................... 50
D. Control Switch ............................................................................................................. 50
IV. Refrigeration Circuit and Component Service Information.............................................. 51
A. Refrigeration Circuit Service Information .................................................................... 51
B. Component Service Information .................................................................................. 54
C. Water Regulating Valve Adjustment (water-cooled model) .......................................... 54
V. Maintenance .................................................................................................................... 55
VI. Preparing the Appliance for Periods of Non-Use ............................................................ 56
VII. Disposal ......................................................................................................................... 58
VIII. Technical Information .................................................................................................... 59
A. Specication and Performance Data Sheets ............................................................... 59
1. KM-320MAH........................................................................................................... 59
2. KM-320MWH ......................................................................................................... 60
3. KM-340MAH .......................................................................................................... 61
4. KM-340MWH ......................................................................................................... 62
5. KM-515MAH .......................................................................................................... 63
6. KM-515MWH ......................................................................................................... 64
7. KM-515MRH with URC-5F ..................................................................................... 65
8. KM-600MAH .......................................................................................................... 66
9. KM-650MAH .......................................................................................................... 67
10. KM-650MWH ....................................................................................................... 68
11. KM-650MRH with URC-5F ................................................................................... 69
12. KM-901MAH ........................................................................................................ 70
13. KM-901MWH ....................................................................................................... 71
14. KM-901MRH with URC-9F ................................................................................... 72
15. KM-901MRH3 with URC-9F ................................................................................. 73
16. KM-1100MAH ........................................................................................................74
17. KM-1100MWH ...................................................................................................... 75
18. KM-1100MRH....................................................................................................... 76
19. KM-1340MAH ...................................................................................................... 77
20. KM-1340MWH ..................................................................................................... 78
21. KM-1340MRH with URC-14F ............................................................................... 79
22. KM-1340MRH3 with URC-14F ............................................................................ 80
23. KM-1601MRH with URC-21F ............................................................................... 81
24. KM-1601MRH with URC-22F ............................................................................... 82
25. KM-1601MRH3 with URC-21F ............................................................................. 83
26. KM-1601MRH3 with URC-22F ............................................................................. 84
5
C. Wiring Diagrams ......................................................................................................... 85
1. Diagrams Without Harvest Pump Timer Relays ..................................................... 85
a) KM-320M_H, KM-515M_H, KM-600MAH ........................................................ 85
b) KM-650MAH (V-1 and earlier), KM-650MWH (V-1 and earlier),
KM-901MAH (B-0 and earlier), KM-901MWH (C-0 and earlier) ....................... 86
c) KM-650MRH (V-1 and earlier), KM-901MRH (C-0 and earlier) ........................ 87
d) KM-901MWH (D-1 and later), KM-901MRH (C-1 and later) ............................. 88
e) KM-1340MAH, KM-1340MWH ......................................................................... 89
f) KM-1340MRH .................................................................................................. 90
g) KM-1601MRH .................................................................................................. 91
h) KM-901MRH3, KM-1340MRH3, KM-1601MRH3 ............................................. 92
2. Diagrams With Harvest Pump Timer Relays .......................................................... 93
a) KM-340M_H ..................................................................................................... 93
b) KM-515MAH .................................................................................................... 94
c) KM-650MAH (V-2 to C-2), KM-650MWH (V-2 to C-2),
KM-901MAH (B-1 to C-2) ................................................................................. 95
d) KM-650MAH (D-1 and later), KM-650MWH (D-1 and later),
KM-901MAH (D-1 and later) ............................................................................. 96
e) KM-650MRH (V-2 to C-1) ................................................................................. 97
f) KM-650MRH (C-2 and later) ............................................................................. 98
g) KM-1100M_H ................................................................................................... 99
6
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT Indicates important information about the use and care of the
appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting from
improper, incorrect, and unreasonable use. Failure to service and maintain the
appliance in accordance with this manual will adversely affect safety, performance,
component life, and warranty coverage and may result in costly water damage.
To reduce the risk of death, electric shock, serious injury, or re, follow basic
precautions including the following:
• Only qualied service technicians should install and service this appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, re, or severe damage to equipment.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuses, damage to existing
wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• To reduce the risk of electric shock, do not touch the control switch with damp
hands.
• Do not make any alterations to the unit. Alterations could result in electric shock,
injury, re, or damage to the unit.
• The appliance is not intended for use by persons (including children) with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
7
WARNING, continued
• Children should be properly supervised around this appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or ammable substances near the
appliance. They might catch re.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Move the icemaker control switch to the "OFF" position and turn off the power
supply to the icemaker before servicing the remote condenser unit.
Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
NOTICE
• Follow the instructions in this manual carefully to reduce the risk of costly water
damage.
• In areas where water damage is a concern, install in a contained area with a oor
drain.
• Install the appliance in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "VI. Preparing the Appliance for Periods
of Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.
8
I. Construction and Water/Refrigeration Circuit Diagram
A. Construction
1. Air-Cooled Models (MAH)
Thermostatic
Bin Control
Water Supply Inlet
Condenser
Drier
Control Box
Spray Tubes
Control Switch
Water Pump
Float Switch
Compressor
Thermostatic
Expansion Valve
Fan Motor
Hot Gas Valve
Thermostatic Bin Control
Bracket & Bulb Holder
Cleaning Valve
Mechanical Bin Control and Bracket
Model Shown: KM-515MAH
Inlet Water Valve
Liquid Line Valve
KM-515MAH
High-Pressure
Switch
9
2. Water-Cooled Models (MWH)
Water Supply Inlet
Condenser
Drier
Control Box
Spray Tubes
Control Switch
Water Pump
Float Switch
Compressor
Thermostatic
Expansion Valve
Water Regulating
Valve
Hot Gas Valve
Cleaning Valve
Thermostatic
Bin Control
Thermostatic Bin Control
Bracket & Bulb Holder
Mechanical Bin Control and Bracket
Model Shown: KM-515MWH
Inlet Water Valve
Liquid Line Valve
KM-320MWH and
KM-515MWH
High-Pressure Switch
10
3. Remote Models (MRH/3)
Receiver Tank
Water Supply Inlet
Junction Boxes
Drier
Control Box
Spray Tubes
Control Switch
Water Pump
Float Switch
Compressor
Thermostatic
Expansion Valves
Hot Gas Valve
Liquid Line Valve
Cleaning Valve
Thermostatic
Bin Control
Thermostatic Bin Control
Bracket & Bulb Holder
Mechanical Bin Control and Bracket
Model Shown: KM-901MRH
Inlet Water Valve
11
Water Supply
Float Switch
Drain
Check Valve
Thermostatic Expansion Valve
Compressor
Hot Gas
Valve
High-Pressure
Switch
Strainer
Fan
Drier
Condenser
Evaporator
Discharge Line
Suction Line
Water Pump
Thermistor
Spray Tubes
Inlet Water Valve
Freeze
Pump Out
Water
Tank
Refrigeration Circuit
Water Circuit
Heat
Exchanger
Liquid Line Valve
(KM-515MAH)
B. Water/Refrigeration Circuit Diagram
1. Air-Cooled Models (MAH)
12
Water Supply
Float Switch
Drain
Check Valve
Thermostatic Expansion Valve
Compressor
Hot Gas
Valve
High-Pressure
Switch
Strainer
Drier
Condenser
Evaporator
Discharge Line
Suction Line
Water Pump
Thermistor
Spray Tubes
Inlet Water Valve
Freeze
Pump Out
Water
Tank
Refrigeration Circuit
Water Circuit
Heat
Exchanger
Liquid Line Valve
(KM-320MWH and
KM-515MWH)
2. Water-Cooled Models (MWH)
Water Regulating Valve
13
Water Supply
Cleaning Valve
Float Switch
Drain
Check Valve
Compressor
Hot Gas
Valve
Check Valves
(KM-901MRH)
High-Pressure
Switch
Strainer
Fan
Drier
Condenser
Evaporator
Discharge Line
Suction Line
Water Pump
Thermistor
Spray Tubes
Inlet Water Valve
Freeze Pump-Out
Water
Tank
Refrigeration Circuit
Water Circuit
Liquid Line
Valve
Receiver
Access
Valve
Headmaster
(C.P.R.)
3. Remote Models (MRH/3)
Thermostatic Expansion
Valve
Heat
Exchanger
14
II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
1. "E" and "G" Control Board without Harvest Pump Timer Operation
Components Energized when the Control Switch is in the "WASH" Position
The "WASH" position on the control switch is used when cleaning and sanitizing the icemaker. When in the "WASH" position,
power is supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer ow over the outside of the
evaporator plate assembly. With the cleaning valve open, the cleaner and sanitizer ow over both the outside and the inside
of the evaporator plate assembly.
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the icemaker will not restart when the
control switch is placed in the "ICE" position.
Legend:
Comp–compressor
FM–fan motor
FMR–fan motor-remote
FS–oat switch
HGV–hot gas valve
LLV –liquid line valve
PM–pump motor
WV–inlet water valve
• Maximum inlet water valve time: 6 min.
• Maximum harvest time: 20 min.
FS check
1 to 3-min. harvest
timer in control
(S4 dip switch 1 & 2)
"E" and "G" Control Board Without Harvest Pump Timer Operation Flow Chart
1. 1-Minute
Fill Cycle
Cycle
Steps
2. Harvest Cycle
Thermistor in
control
3. Freeze Cycle
• Minimum freeze time: 5 min.
• Maximum freeze time: freeze
timer setting
(S4 dip switch 9 & 10)
FS in control
4. Pump-Out Cycle
• Factory set for every
10th cycle
(except KM-515M_H)
(S4 dip switch 5 & 6)
• Pump motor stops for
2 sec., then reverses
for 10/20 sec. (S4 dip
switch 3 & 4)
WV energized
FS open
Comp energized
FMR energized
HGV energized
WV energized
Thermistor temperature
reaches 48°F (9°C) (3.9 kΩ
or less). Harvest timer starts
(1 to 3 min.).
FS open
Comp continues
FMR continues
FM energized
LLV energized
PM energized
HGV de-energized
WV de-energized
FS closed
Comp continues
FMR continues
HGV energized
WV energized (KM-320M_H S4 dip
switch 3 & 4)
PM de-energizes for 2 sec.,
then reverses for 10/20 sec.
FM de-energized
LLV de-energized
FS check
Startup
If FS is open, Comp stops and cycle returns to 1-min. ll.
5-min. minimum
freeze timer in
control
FS closed
FS opens or
freeze timer
terminates
Shutdown and Restart
See next page.
15
1. Bin Full
Shutdown Delay:
• Fill Cycle–15 sec. after activation.
• Harvest Cycle–At the end of the harvest cycle, or up to 15 sec. into the
freeze cycle if activated at the end of the harvest cycle.
• Freeze Cycle–15 sec. after activation if activated at least 15 sec. before
the 5-min. short cycle protection timer terminates.
Otherwise, at the end of the next harvest cycle.
Shutdown
and Restart
MBC Operation
MBC open (MBC actuator paddle engaged)
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
Yellow "BC OPEN" LED continues. All
components de-energized.
2. Icemaker Off
All components
de-energized.
3. Ice Level Lowered
Icemaker starts at
"1. 1-Minute Fill Cycle."
MBC closed
(MBC actuator paddle disengaged)
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
1. Bin Full
Within 10 sec.
after ice contacts
TBC bulb,
icemaker shuts
down.
Shutdown
and Restart
TBC
Operation
Ice contacts TBC bulb
2. Icemaker Off
All components
de-energized.
3. Ice Level Lowered
No ice touching
TBC bulb.
Icemaker starts at
"1. 1-Minute Fill Cycle."
TBC closed
TBC open
All components
de-energized
To 1. 1-Minute Fill Cycle
"E" and "G" Control Board Without Harvest Pump Timer Operation Flow Chart, Continued
Thermostatic Bin Control Shutdown Sequence Flow Chart
Mechanical Bin Control Shutdown Sequence Flow Chart
To 1. 1-Minute Fill Cycle
Legend:
MBC–mechanical bin control
TBC–themostatic bin control
16
2. "G" Control Board with Harvest Pump Timer Operation
1 to 3-min. harvest timer in
control (S4 dip switch 1 & 2)
• Maximum inlet water valve time: 6 min. or the length of
harvest minus 50 sec. (S4 dip switch 7), whichever is shorter.
• Maximum harvest time: 20 min.
FS check
Legend:
Comp–compressor
FM–fan motor
FMR–fan motor-remote
FS–oat switch
HGV–hot gas valve
LLV–liquid line valve
MBC–mechanical bin control
PM–pump motor
WV–inlet water valve
Components Energized when the Control Switch is in the "WASH" Position
The "WASH" position on the control switch is used when cleaning and sanitizing the icemaker. When in the "WASH" position, power is
supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer ow over the outside of the evaporator plate assembly.
With the cleaning valve open, the cleaner and sanitizer ow over both the outside and the inside of the evaporator plate assembly.
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the icemaker will not restart when the control switch is
placed in the "ICE" position.
"G" Control Board With Harvest Pump Timer Operation Sequence Flow Chart
1. 1-Minute
Fill Cycle
Cycle
Steps
2. Harvest Cycle
Thermistor in
control
3. Freeze Cycle
• Minimum freeze time: 5 min.
• Maximum freeze time: freeze timer
setting (S4 dip switch 9 & 10)
FS in control
4. Pump-Out Cycle
• Factory set for every
10th cycle
(except KM-515M_H)
(S4 dip switch 5 & 6)
• Pump motor stops for
2 sec., then reverses
for 10/20 sec.
(S4 dip switch 3 & 4)
WV energized
FS open
Comp energized
FM energized (KM-1100)
FMR energized
HGV energized
WV energized
Thermistor temperature reaches
48°F (9°C) (3.9 kΩ or less). Harvest
timer starts (1 to 3 min.).
FS open
Comp continues
FM continues
(KM-1100)
FMR continues
FM energized (except KM-1100)
LLV energized
PM energized
HGV de-energized
FS closed
Comp continues
FM continues (KM-1100)
FMR continues
HGV energized
PM de-energizes for 2 sec.,
then reverses for 10/20 sec.
FM de-energized
LLV de-energized
FS check
Startup
If FS is open, Comp stops and cycle returns to 1-min. ll.
1. Bin Full
Shutdown Delay:
• Fill Cycle–15 sec. after activation.
• Harvest Cycle–At the end of the harvest cycle, or up to 15 sec. into the
freeze cycle if activated at the end of the harvest cycle.
• Freeze Cycle–15 sec. after activation if activated at least 15 sec. before
the 5-min. short cycle protection timer terminates.
Otherwise, at the end of the next harvest cycle.
Shutdown
and Restart
MBC Operation
MBC open (MBC actuator paddle engaged)
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
Yellow "BC OPEN" LED continues. All
components de-energized.
5-min. minimum
freeze timer in
control
FS closed
FS opens or
freeze timer
terminates
2. Icemaker Off
All components
de-energized.
3. Ice Level Lowered
Icemaker starts at
"1. 1-Minute Fill Cycle."
To 1 above
MBC closed
(MBC actuator paddle disengaged)
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
Harvest Pump
Timer
50 sec.
PM energized
WV de-energized
17
B. Service Diagnosis
WARNING
• The appliance should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• Risk of electric shock. Control switch in "OFF" position does not de-energize all
loads Use extreme caution and exercise safe electrical practices.
• Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.
• Before servicing the appliance, move the control switch to the "OFF" position and
turn off the power supply.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the appliance is serviced. Make sure that none have fallen
into the dispenser unit/ice storage bin.
• Make sure all food zones in the appliance and dispenser unit/ice storage bin are
clean after service.
The diagnostic procedure is a sequence check that allows you to diagnose the electrical
system and components. Before proceeding, check for correct installation, proper voltage
per nameplate, and adequate water supply. Check CB using the steps in "II.C. Control
Board Check." Check dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and
S5 dip switch 1 through 5 ("G" CB) are in the factory default position. S4 dip switch 1, 2,
5, 6 are cleaning adjustments and the settings are exible. For factory default settings,
see "III.C.1. Default Dip Switch Settings."
Note: • When checking high voltage (115VAC), always choose a white (W) neutral wire to
establish a good neutral connection.
• On 208-230/60/1 models with main transformer and 208-230/60/3 models, the
appliance neutral (W) is provided through the main transformer. To conrm
a good neutral, check for 60VAC from white (W) neutral to ground (GND).
If60VAC is present, neutral is good. If 60VAC is not present, check 208-230VAC
main power supply to main transformer. If 208-230VAC is present, check main
transformer continuity.
• When checking voltage from the CB K1 connector (10 pin connector), pull
CBK1connector out slightly to allow room for multimeter test leads contact.
1) Turn off the power supply, then access the control box. Move the control switch to the
"OFF" position. Clear any ice from BC.
2) Check that the 115VAC 10A fuse is good.
18
1. "E" and "G" Control Board without Harvest Pump Timer Diagnosis
3) Power On: Turn on the power supply, then move the control switch to the "ICE" position.
A 5-sec. delay occurs.
• "E" Control Board: CB red "POWER OK" LED turns on.
• "G" Control Board: CB red "POWER OK" LED and green "BC CLOSED" LEDturn on.
Note: • CB red "POWER" LED remains on unless the 10.5VAC power supply is
interrupted (K2 connector).
• Check CB using the steps in "II.C. Control Board Check."
• "G" CB with Thermostatic Bin Control: If yellow "BC OPEN" LED is on, check that
CB red K4 connector has jumper 4A4883G01 properly connected.
• "G" CB with Mechanical Bin Control: If yellow "BC OPEN" LED is on (indicating a
full bin), check MBC. See"II.D.2. Mechanical Bin Control Check and Cleaning."
a) Power On Diagnosis: If CB red "POWER OK" LED is off, conrm closed TBC and
10A fuse is good. If TBC is open, remove ice from bulb and warm bulb in hand.
IfTBC does not close, replace TBC. See "II.D.1. Thermostatic Bin Control Check."
Check for 115VAC at control switch #1(BR) to neutral (W) then at control switch
#2(P) to neutral (W). If 115VAC is present on #1 (BR) and not on #2(P), replace
control switch. If 115VAC is present on control switch #2 (P), check for 115VAC at
HPS (P) to neutral (W) then HPS (BK) to neutral (W). If115VAC is present at HPS
(P) and not at HPS (BK), HPS is open. See HPS Diagnosis below. If 115VAC is
present at HPS (BK), check for 10.5VAC at CB K2#1 red wire to CB K2 #2 red wire.
If 10.5VAC is not present, check that the cleaning valve is closed and the interlock
switch is closed. Next, check CT continuity. Ifopen replace CT.
b) HPS Diagnosis: Check that the condenser coil is not clogged or restricted. Let
refrigeration circuit pressures equalize. If HPS does not reset and pressures are
equalized, replace HPS. If pressures are not equalized, reclaim refrigerant and
diagnose refrigeration circuit restriction. Check that there are no restrictions in the
refrigeration circuit.
Harvest Cycle: HGV, strainer, or check valve.
Freeze Cycle: FM, FMR, TXV, HM, LLV, strainer, check valve, drier, and damaged line
set or tting. Also conrm WRV opens in freeze cycle.
Conrm that the location meets installation requirements:
• The icemaker is not intended for outdoor use. Normal operating ambient temperature
should be within 45°F to 100°F (7°C to 38°C).
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease
of maintenance and/or service should they be required.
• The appliance should not be located in a corrosive environment.
19
4) 1-Minute Fill Cycle – LED 4 is on. WV energizes. After 1 min., CB checks for a closed
FS. If FS is closed, harvest cycle begins. If harvest cycle begins (Comp, HGV, and FMR
energize), continue to step 5. If FS is open, WV remains energized through additional
1-min. ll cycles until water enters the water tank and FS closes (low water safety
protection during initial start up and at the end of each harvest). Diagnosis: Check
that water enters the water tank. If not, check that the water supply line shut-off valve
is open and screens or external lters are clear. Check for 115VAC at CB K1 #6(O)
to neutral(W). If 115VAC is not present, replace CB. If 115VAC is present, and WV
does not energize, check for 115VAC at WV. If 115VAC is present, check coil continuity.
Ifopen, replace WV. If the water tank lls, but the appliance fails to start harvest (Comp
energized), check for open FS. See "II.E. Float Switch Check and Cleaning." If FS is
closed and CB fails to start the harvest cycle after 1 min., replace CB.
5) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV continues. Comp, FMR, and
HGV energize. CB monitors the warming of the evaporator via the thermistor located
on the suction line. When the thermistor reaches 48°F (9°C), CB reads 3.9 kΩ from the
thermistor and turns harvest termination over to the harvest timer (S4 dip switch 1 & 2).
The harvest timer has settings of 60, 90, 120, and 180sec. Thepump-out timer (S4dip
switch 3 & 4) acts in place of the harvest timer during cycles with a pump-out (S4 dip
switch 5 & 6). WV remains energized during harvest for a maximum of 6min. or the
length of harvest, whichever is shorter.
a) Comp Diagnosis: Check that evaporator is warming. Ifnot, conrm that Comp
energizes. If not, check for 115VAC at CB K1 #1 or #9 (V) to neutral (W). If 115VAC is
not present, check for 115VAC at CB K1 #7 or #10 (BR) to neutral (W). If115VAC is
present at #7 or #10 (BR) and not at #1 or #9 (V), replace CB. If 115VAC is present,
check for 115VAC at CR or MC solenoid. If 115VAC is present, conrm contacts are
closed. If not, replace CR or MC. If CR or MC contacts are closed, check Comp
external overload, Comp start and run capacitors, Comp start relay, and Comp motor
winding.
b) HGV Diagnosis: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. Check for 115VAC at CB K1 #2 (P) to neutral (W).
If115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at HGV
coil and check HGV coil continuity. Replace as needed.
c) LLV Diagnosis: Conrm that LLV is de-energized and closed (not bypassing).
Ifenergized, replace CB. If de-energized and bypassing, replace LLV.
d) WRV Diagnosis: Conrm WRV is not leaking by.
20
e) Initial Harvest Cycle Termination Diagnosis: When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to
the harvest timer (S4 dip switch 1 & 2). Check discharge line temperature. For a
thermistor check, see "II.F.Thermistor Check." If 1-min. ll cycle starts after harvest
timer terminates, check that FS is clean and operating properly, see "II.E. Float
Switch Check and Cleaning." If FS is closed, CB proceeds to the next cycle. Ifnot,
replace CB.
Note: The minimum total time allowed by CB for a complete harvest cycle is 2 min.
Maximum harvest time allowed is 20 min.
NOTICE! On models with "G" control board and no harvest pump timer relays,
S4dip switch 7 must remain off. Otherwise, PM energizes in reverse direction the
last 50 seconds of harvest and empties water from water tank.
6) Freeze Cycle – LED 1 is on. Comp and FMR continue. PM, FM, and LLVenergize.
WV and HGV de-energize. Appliance is held in freeze by a 5-min. short cycle protection
timer. After 5-min. timer terminates and FSopens, freeze cycle terminates.
a) Freeze Cycle Diagnosis: Conrm Comp and FMR continue. Conrm that
PM, FM, and LLV energize. Conrm WRV opens. Next, conrm WV and HGV
de-energize. During the rst 5 min. of freeze, conrm evaporator is cooling. If not,
conrm WV de-energized (not leaking by), HGV de-energized (not bypassing),
LLV and FM energize, TXV and HM operate correctly, WRV opens, Comp is
efficient, and refrigerant charge is correct. See "VIII.A. Specication Sheet" and
"VIII.B.Performance Data."
b) Comp and FMR Diagnosis: If Comp and FMR de-energize once freeze begins,
check that appliance has not shut off on HPS ("POWER OK" LED off). If so, check
"3)b) HPS Diagnosis" above. If "POWER OK" LED is on, check for 115VAC at CB
K1#1 (V) or #9 (V) to neutral (W). If 115VAC is not present and LED 1 is on, replace
CB. If 115VAC is present, check for 115VAC at CR or MC coil. If 115VAC is present,
check CR or MC coil and contact continuity. Replace as needed. If CR or MC is ok,
check Comp external overload, start relay, and start and run capacitors. Next, check
Comp motor winding continuity. If Comp is energized but evaporator is not cooling,
check for an inefficient Comp. See "VIII.B. Performance Data." If Comp is energized
but FMR is not, check for 115VAC at the FMR junction box. If 115VAC is not present,
check icemaker wiring connections. If 115VAC is present, check for voltage at
condenser unit. If115VAC is not present, check eld wiring connections. If 115VAC is
present, check FMR capacitor, motor winding, and fan blade for binding.
c) WV and HGV Diagnosis: If WV is energized, check for 115VAC at CB K1 #6 (O) to
neutral (W). If 115VAC is present after PM energizes, replace CB. If 115VAC is not
present, replace WV (bypassing). If HGV did not de-energize, check for 115VAC at
CB K1 #2 (P) to neutral (W). If 115VAC is present after PM energizes, replace CB.
If115VAC is not present, replace HGV (bypassing).
21
d) PM Diagnosis: Conrm water is owing over evaporator from PM and not WV. If PM
de-energizes once freeze begins, check for 115VAC at CB K1 #4 (R) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present and PM is de-energized,
check for 115VAC at control switch #5 (R) to neutral (W). If 115VAC is present at CB
K1 #4 (R) and not at control switch #5 (R), check control switch continuity between
#5 (R) and #4 (R). Replace as needed. If 115VAC is present at control switch #5 (R)
to neutral (W), check PM capacitor and motor winding continuity.
e) FM and LLV Diagnosis: If FM or LLV does not energize, check for 115VAC at CB
K1#3 (BK) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present:
For FM, check capacitor, motor winding, and blade for binding.
For LLV, check coil voltage and continuity.
f) Refrigerant Pressures, HM, and TXV Diagnosis: If evaporator is still not cooling,
check refrigerant pressures. See "VIII.B. Performance Data."
Next, check HM operation. If refrigeration pressures are above HM setpoint and
HMis bypassing, replace HM. Check TXV for proper operation. Remove TXV bulb
and hold it in your hand, refrigerant low-side pressure should rise, place TXV bulb in
ice water, refrigerant low-side pressure should drop. A 10 to 15 pound pressure swing
between warm and cold conditions indicate a good TXV. If a 10 to 15pound swing is
not present, replace TXV.
g) WRV Diagnosis: WRV is factory set and generally no adjustment is required.
IfWRV fails to open in freeze, check for proper refrigerant pressures. See "VIII.B.
Performance Data." If refrigerant pressures are correct and WRV does not open,
adjust or replace as needed. See "IV.C. Water Regulating Valve Adjustment
(water-cooled models)."
h) Freeze Termination Diagnosis: After 5 min. in freeze, disconnect CB K5 FS
connector. 15 sec. later appliance should switch out of the freeze cycle (15 second
delay after FS opens before terminating the freeze cycle). If appliance remains in
freeze longer than 15 sec. after FS removed, replace CB. If appliance switches with
FS removed but would previously not switch out of freeze with FS connected (long
freeze - 3 beep alarm), see "II.E. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 20 to 40 min. depending on model and conditions.
Cycle times and pressures should follow performance data provided in this
manual. See "VIII.B. Performance Data."
i) Short Freeze Cycle Diagnosis: Conrm water tank lls and overows during 1 min.
ll and harvest cycles. If not, check water supply lters, shut-off valve, WV screen.
Ifwater tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water owing down the potable drain). If CV is leaking by,
remove and clean CV, replace rubber seat and spring if necessary. If water tank is
full, see "II.E. Float Switch Check and Cleaning" for erratic operating FS.
22
7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
rst pump-out is dependent on CB. "E" CB rst pump-out is after the rst freeze cycle.
"G" CB rst pump-out is determined by S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board Settings 1st Pump-Out
S4 Dip Switch Setting
Pump-Out
Frequency
"E" Control Board "G" Control Board
No. 5 No. 6
OFF OFF Every cycle After 1st freeze cycle After 2nd freeze cycle
ON OFF Every 2 cycles After 3rd freeze cycle
OFF ON Every 5 cycles After 6th freeze cycle
ON ON Every 10 cycles After 11th freeze cycle
Comp and FMR continue, HGV energizes. If S4dip switch 3 & 4 are set to 3 off and 4
on, LED 4 turns on and WV energizes. FM and LLVde-energize. PM stops for 2 sec.,
then reverses for 10/20 sec. depending on pump-out timer (S4 dip switch 3 & 4) setting.
When the pump-out timer terminates, pump-out is complete. The pump-out frequency
control (S4 dip switch 5 & 6) is factory set, and generally no adjustment is required.
However, the pump-out frequency control can be set to have a pump-out occur every
cycle, or every 2, 5, or 10 cycles. For details, see "III.C.4. Pump-Out Frequency Control
(S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above),
disconnect CB black K5 connector (FS connector) after 5 min. of freeze. Check that PM
stops and re-starts and water is owing down the drain through CV. If PM does not stop
and re-start, check that CB LEDs 1, 3, and 2 are on. If not, replace CB. IfLEDs1,3,
and 2 are on and PM does not energize, check for 115VAC at
CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB.
If 115VAC is present, make sure the drain line is not clogged and that CV is clean and
operating properly.
Conrm FM and LLV de-energize. If FM or LLV is energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5 above.
Note: Appliance continues to cycle until TBC or MBC is satised or power is turned off.
The appliance always restarts at the 1-min. ll cycle.
23
9) Shutdown
a) Thermostatic Bin Control (TBC):
When the appliance is running, hold ice in contact with the thermostatic bulb. TBC
switch opens within 10 sec., shutting down the appliance. TBC is factory set, and
generally no adjustment is required. However, adjustment may be needed in some
conditions, particularly at higher altitude locations.
NOTICE
• On "E" control boards, do not adjust S4 dip switch 7 out of the factory default
position. This dip switch must be left in the factory default position or the
appliance will not operate correctly.
• On "G" control boards, CB red K4 connector jumper (4A4883G01) must be in
place. Diagnosis: See "II.D.1. Thermostatic Bin Control Check."
b) Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check and Cleaning."
Legend: BC–bin control; CB–control board; Comp–compressor; CV–check valve;
FM–fan motor; FMR–fan motor-remote; FS–oat switch; HGV–hot gas valve;
HM–headmaster (C.P.R.); HPS–high-pressure switch; L LV–liquid line valve;
MBC–mechanical bin control; PM–pump motor; TBC–thermostatic bin control;
TXV–thermostatic expansion valve; WRV–water regulating valve; WV–inlet water
valve
24
2. "G" Control Board with Harvest Pump Timer Diagnosis
3) Power On: Turn on the power supply, then move the control switch to the "ICE" position.
A 5-sec. delay occurs. CB red "POWER OK" LED and green "BC CLOSED" LED turn
on. If yellow "BC OPEN" LED is on (indicating a full bin), check MBC. Move ice away
from MBC actuator paddle. If yellow "BC OPEN" LED stays on, see"II.D.2. Mechanical
Bin Control (MBC) Check."
Note: • CB red "POWER OK" LED remains on unless the 10.5VAC power supply is
interrupted (K2 connector).
• Check CB using the steps in "II.C. Control Board Check."
• Conrm CB green "BC CLOSED" LED is on. If CB yellow "BC OPEN" LED is on,
remove ice from BC. If no ice is around BC and yellow "BC OPEN" LED is on,
see "II.D.2. Mechanical Bin Control (MBC) Check."
a) Power On Diagnosis: If CB red "POWER OK" LED is off, conrm 10A fuse is good.
Check for 115VAC at control switch #1 (BR) to neutral (W) then at control switch
#2(P) to neutral (W). If 115VAC is present on #1 (BR) and not on #2(P), replace
control switch. If 115VAC is present on control switch #2 (P), check for 115VAC at
HPS (P) to neutral (W) then HPS (BK) to neutral (W). If115VAC is present at HPS
(P) and not at HPS (BK), HPS is open. See HPS Diagnosis below. If 115VAC is
present at HPS (BK), check for 10.5VAC at CB K2#1 red wire to CB K2 #2 red wire.
If 10.5VAC is not present, check that the cleaning valve is closed and the interlock
switch is closed. Next, check CT continuity. If open, replace CT.
b) HPS Diagnosis: Check that the condenser coil is not clogged or restricted. Let
refrigeration circuit pressures equalize. If HPS does not reset and pressures are
equalized, replace HPS. If pressures are not equalized, reclaim refrigerant and
diagnose refrigeration circuit restriction. Check that there are no restrictions in the
refrigeration circuit.
Harvest Cycle: HGV, strainer, or check valve.
Freeze Cycle: FM, FMR, TXV, WRV, HM, LLV, strainer, check valve, drier, and
damaged line set or tting.
Conrm that the location meets installation requirements:
• The appliance is not intended for outdoor use. Normal operating ambient temperature
should be within 45°F to 100°F (7°C to 38°C).
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease
of maintenance and/or service should they be required.
• The appliance should not be located in a corrosive environment.
25
4) 1-Min. Fill Cycle – LED 4 is on. WV and X11 relay energize. After 1 min., CB checks for
a closed FS. If FS is closed, the harvest cycle begins. If harvest cycle begins (Comp,
HGV, FMR energized), continue to step 5a. If FS is open, WV remains energized
through additional 1-min. ll cycles until water enters the water tank and FS closes
(low water safety protection during initial start up and at the end of each harvest).
Diagnosis: Check that water enters the water tank. If not, check that the water supply
line shut-off valve is open and screens or external lters are clear. Check for 115VAC
at CB K1 #6 (O) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is
present, and WV does not energize, check for 115VAC at WV. If 115VAC is present,
check coil continuity. Ifopen, replace WV. If the water tank lls, but the appliance fails to
start harvest (Comp energized), check for open FS. See "II.E. Float Switch Check and
Cleaning." If FS is closed and CB fails to start the harvest cycle after 1 min., replace CB.
5a) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV and X11 relay continue. Comp,
FMR, HGV, and X10 relay energize. CBmonitors the warming of the evaporator via the
thermistor located on the suction line. When the thermistor reaches 48°F (9°C), CB
reads 3.9 kΩ from the thermistor and turns harvest termination over to the harvest timer
(S4 dip switch 1 & 2). The harvest timer has settings of 60, 90, 120, and 180 sec. The
pump-out timer (S4 dip switch 3 & 4) acts in place of the harvest timer during cycles
with a pump-out (S4 dip switch 5 & 6). WV and X11 relay are energized during harvest
for a maximum of 6 min. or the length of harvest minus 50sec., whichever is shorter.
50sec. before harvest terminates, PM energizes. See step 5b below.
a) Comp Diagnosis: Check that evaporator is warming. Ifnot, conrm that Comp
energizes. If not, check for 115VAC at CB K1 #1 or #9 (V) to neutral (W). If 115VAC is
not present, check for 115VAC at CB K1 #7 or #10 (BR) to neutral (W). If115VAC is
present at #7 or #10 (BR) and not at #1 or #9 (V), replace CB. If 115VAC is present,
check for 115VAC at CR or MC solenoid. If 115VAC is present, conrm contacts are
closed. If not, replace CR or MC. If CR or MC contacts are closed, check Comp
external overload, Comp start and run capacitors, Comp start relay, and Comp
motor winding. If Comp is energized and evaporator is not warming, check that HGV
energizes and opens. Check for 115VAC at CB K1 #2 (P) to a neutral(W). If 115VAC
is not present and LED 2 is on, replace CB. If115VAC is present, check coil voltage
and continuity. Replace as needed. Conrm that LLV is de-energized and closed (not
bypassing). If energized, replace CB. Ifde-energized and bypassing, replace LLV.
Conrm WRV is not leaking by. If evaporator is warming, PM energizes for the last 50
sec. of harvest.
b) HGV Diagnosis: If Comp is energized and evaporator is not warming, check that
HGV energizes and opens. Check for 115VAC at CB K1 #2 (P) to neutral (W).
If115VAC is not present, replace CB. If 115VAC is present, check for 115VAC at HGV
coil and check HGV coil continuity. Replace as needed.
c) LLV Diagnosis: Conrm that LLV is de-energized and closed (not bypassing). If
energized, replace CB. If de-energized and bypassing, replace LLV.
d) WRV Diagnosis: Conrm WRV is not leaking by.
26
5b) Harvest Pump Timer – LEDs 1, 3, and 2 are on. When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to the
harvest timer (S4 dip switch 1 & 2). 50 sec. before the harvest timer terminates, LED
3turns on and PM energizes. Comp, FMR, HGV, and X10 relay continue. LED 4 turns
off, WV and X11 relay de-energize.
Diagnosis: Place a thermometer on the suction line next to the thermistor. Has it
warmed to 48°F (9°C) or warmer? Conrm thermistor status. See "II.F. Thermistor
Check." If the thermistor reading is in proper range, dip switch 7 is on, and PM does
not energize 50 sec. before harvest terminates, replace CB. If WV continues, check for
115VAC at CB K1 #6 (O). If115VAC is present, and LED 4 is off, replace CB. If LED 3is
on and PM is not energized, check for 115VAC at CB K1 #5(DBU). If115VAC is not
present, replace CB. If 115VAC is present and PM is not energized, check for 115VAC
at X10relay terminal #7 (Y) to neutral (W). If 115VAC is not present, check for 115VAC
at X10 relay terminal #3 (P) to neutral (W) and X10 relay terminal #5 (Y) to neutral (W).
If 115VAC is present on terminal #3(P) and not on terminal #5 (Y), replace X10 relay.
If 115VAC is present on X10 relay terminal #7 (Y) and PM is not energized, check for
115VAC at X10 relay terminal #4 (R) to neutral (W) and terminal #6 (DBU) to neutral
(W). If 115VAC is present on terminal #6(DBU) and not on terminal #4 (R), replace X10
relay. If 115VAC is present on X10relay terminal #4 (R), check control switch contact
continuity between terminals #4(R) and #5(R). Ifcontacts are open, replace control
switch. If contacts are closed and 115VAC is present between control switch terminal #5
(R) and neutral (W), check PM capacitor and motor winding continuity.
5c) Initial Harvest Cycle Termination Diagnosis: When the thermistor reaches 48°F
(9°C), CB reads 3.9 kΩ from the thermistor and turns harvest termination over to the
harvest timer (S4 dip switch 1 & 2). Check discharge line temperature. For a thermistor
check, see "II.F.Thermistor Check." If 1-min. ll cycle starts after harvest timer
terminates, check that FS is clean and operating properly, see "II.E. Float Switch Check
and Cleaning." If FS is closed, CB proceeds to the next cycle. Ifnot, replace CB.
Note: The minimum total time allowed by CB for a complete harvest cycle is 2 min.
Maximum harvest time allowed is 20 min.
NOTICE! S4 dip switch 7 must remain on. Otherwise, PM will not energize during
the last 50 sec. of harvest.
27
6) Freeze Cycle – LED 1 is on. Comp, FMR, and PM continue. FM and LLV energize.
HGV and X10 relay de-energize. Appliance is held in freeze by a 5-min. short cycle
protection timer. After 5-min. timer terminates and FS opens, freeze cycle terminates.
Note: PM power supply switches from CBK1 #5(DBU) in harvest to K1 #4 (R) in freeze.
a) Freeze Cycle Diagnosis: Conrm Comp, FMR, and PM continue. Conrm that
FM and LLV energize. Conrm WRV opens. Next, conrm HGV and X10 relay
de-energize. During the rst 5 min. of freeze, conrm evaporator is cooling. If not,
conrm WV de-energized (not leaking by), HGV de-energized (not bypassing),
LLV and FM energize, TXV and HM operate correctly, WRV opens, Comp is
efficient, and refrigerant charge is correct. See "VIII.A. Specication Sheet" and
"VIII.B.Performance Data."
b) Comp and FMR Diagnosis: If Comp and FMR de-energize once freeze begins,
check that appliance has not shut off on HPS ("POWER OK" LED off). If so, check
"3)b) HPS Diagnosis" above. If "POWER OK" LED is on, check for 115VAC at CB K1
#1 (V) or #9 (V) to neutral (W). If 115VAC is not present and LED 1 is on, replace CB.
If 115VAC is present, check for 115VAC at CR or MC coil. If 115VAC is present, check
CR or MC coil and contact continuity. Replace as needed. If CR or MC is okay, check
Comp start relay and start and run capacitors. Next, check Comp motor winding
continuity. If Comp is energized but evaporator is not cooling, check for an inefficient
Comp. See "VIII.B. Performance Data." If Comp is energized but FMR is not, check
for 115VAC at the FMR junction box. If 115VAC is not present, check icemaker wiring
connections. If 115VAC is present, check for voltage at condenser unit. If115VAC
is not present, check eld wiring connections. If 115VAC is present, check FMR
capacitor, motor winding, and fan blade for binding.
c) WV and HGV Diagnosis: If WV is energized, check for 115VAC at CB K1 #6 (O) to
neutral (W). If 115VAC is present after PM energizes in harvest cycle, replace CB.
If 115VAC is not present, replace WV (bypassing). If HGV did not de-energize at
the end of harvest, check for 115VAC at CB K1 #2 (P) to neutral (W). If 115VAC is
present 50 sec. after PM energizes, replace CB. If 115VAC is not present, replace
HGV (bypassing).
d) PM Diagnosis: Conrm water is owing over evaporator from PM and not WV. If PM
de-energizes once freeze begins, check for 115VAC at CB K1 #4 (R) to neutral (W).
If 115VAC is not present, replace CB. If 115VAC is present and PM is de-energized,
check for 115VAC at control switch #5 (R) to neutral (W). If 115VAC is present at CB
K1 #4 (R) and not at control switch #5 (R), check control switch continuity between
#5 (R) and #4 (R). Replace as needed. If 115VAC is present at control switch #5 (R)
to neutral (W), check PM capacitor and motor winding continuity.
e) FM and LLV Diagnosis: If FM or LLV does not energize, check for 115VAC at CB
K1#3 (BK) to neutral (W). If 115VAC is not present, replace CB. If 115VAC is present:
For FM, check capacitor, motor winding, and blade for binding.
For LLV, check coil voltage and continuity.
28
f) Refrigerant Pressures, HM, and TXV Diagnosis: If evaporator is still not cooling,
check refrigerant pressures. See "VIII.B. Performance Data."
Next, check HM operation. If refrigeration pressures are above HM setpoint and
HMis bypassing, replace HM. Check TXV for proper operation. Remove TXV bulb
and hold it in your hand, refrigerant low-side pressure should rise, place TXV bulb in
ice water, refrigerant low-side pressure should drop. A 10 to 15 pound pressure swing
between warm and cold conditions indicate a good TXV. If a 10 to 15 pound swing is
not present, replace TXV.
g) WRV Diagnosis: WRV is factory set and generally no adjustment is required.
IfWRV fails to open in freeze, check for proper refrigerant pressures. See "VIII.B.
Performance Data." If refrigerant pressures are correct and WRV does not open,
adjust or replace as needed. See "IV.C. Water Regulating Valve Adjustment
(water-cooled models)."
h) Freeze Termination Diagnosis: After 5 min. in freeze, disconnect CB K5 FS
connector. 15 sec. later appliance should switch out of the freeze cycle (15 second
delay after FS opens before terminating the freeze cycle). If appliance remains in
freeze longer than 15 sec. after FS removed, replace CB. If appliance switches with
FS removed but would previously not switch out of freeze with FS connected (long
freeze - 3 beep alarm), see "II.E. Float Switch Check and Cleaning."
Note: Normal freeze cycle will last 20 to 40 min. depending on model and conditions.
Cycle times and pressures should follow performance data provided in this
manual. See "VIII.B. Performance Data."
i) Short Freeze Cycle Diagnosis: Conrm water tank lls and overows during 1 min.
ll and harvest cycles. If not, check water supply lters, shut-off valve, WV screen.
Ifwater tank empties before 5 min. timer terminates and freeze cycle is short, check
that CV is not leaking by (water owing down the potable drain). If CV is leaking by,
remove and clean CV, replace rubber seat and spring if necessary. If water tank is
full, see "II.E. Float Switch Check and Cleaning." for erratic operating FS.
7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
rst pump-out is determined by S4 dip switch 5& 6. See the table below.
"G" Control Board Settings
S4 Dip Switch Setting
Pump-Out
Frequency
"G" Control Board
No. 5 No. 6
OFF OFF Every cycle After 2nd freeze cycle
ON OFF Every 2 cycles After 3rd freeze cycle
OFF ON Every 5 cycles After 6th freeze cycle
ON ON Every 10 cycles After 11th freeze cycle
Comp and FMR continue, HGV energizes. If S4dip switch 3 & 4 are set to 3 off
and 4 on, LED 4 turns on and WV and X11 relay energize, energizing X10relay.
NOTICE!S4dip switch 3 & 4 must not be set to 3 off and 4 on. Otherwise, PM
will rotate in freeze cycle direction instead of pump-out direction. FM and LLV
de-energize. PM stops for 2 sec., then reverses for 10/20 sec. depending on pump-out
timer (S4dip switch 3 & 4) setting. When the pump-out timer terminates, pump-out
29
is complete. The pump-out frequency control (S4 dip switch 5 & 6) is factory set, and
generally no adjustment is required. However, the pump-out frequency control can be
set to have a pump-out occur every cycle, or every 2, 5, or 10 cycles. For details, see
"III.C.4. Pump-Out Frequency Control (S4 dip switch 5 & 6)."
Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5min. of freeze disconnect CB black K5 connector (FS connector). Check that PM
stops and re-starts and that PM rotation is correct (water owing down the drain through
CV). If PM does not stop and re-start, check that CB LEDs 1, 3, and 2 are on. If not,
replace CB. IfLEDs1,3, and 2 are on and PM does not energize, check for 115VAC
at CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB. If 115VAC
is present, check that X10 relay is de-energized. If not, check X11 relay status. If X11
relay is energized, replace CB. If X11 relay is de-energized and X10 relay is energized,
replace X11 relay (contacts sticking). If X10 relay is de-energized, check for 115VAC
at terminal #6 (DBU) to neutral (W) and terminal #2 (DBU) to neutral (W). If 115VAC is
present on terminal #6 (DBU) and not on terminal #2 (DBU), replace X10 relay. If PM is
energized and rotating in pump-out rotation, make sure the drain line is not clogged and
that CV is clean and operating properly.
Conrm FM and LLV de-energize. If FM or LLV are energized with LEDs 1, 3, and 2 on,
replace CB.
8) Normal Harvest Cycle – Same as the initial harvest cycle. Return to step 5a) above.
Note: Appliance continues to cycle until MBC is satised or power is switched off. The
appliance always restarts at the 1-min. ll cycle.
9) Shutdown
Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check."
Legend: BC–bin control; CB–control board; Comp–compressor; CV–check valve;
FM–fan motor; FMR–fan motor remote; FS–oat switch; HGV–hot gas valve;
HM–headmaster (C.P.R.); HPS–high-pressure switch; L LV–liquid line valve;
MBC–mechanical bin control; PM–pump motor; TXV–thermostatic expansion
valve; WRV–water regulating Valve; WV–inlet water valve
30
C. Control Board Check
Before replacing CB that does not show a visible defect and that you suspect is bad,
always conduct the following check procedure. This procedure will help you verify your
diagnosis.
Alarm Reset: If CB is in alarm (beeping), press the "ALARM RESET" button on CB
while CB is beeping. WARNING!Risk of electric shock. Care should be
taken not to touch live terminals. Once reset, the icemaker starts at the
1-minute ll cycle. For audible alarm information, see "III.B. LED Lights and
Audible Alarm Safeties."
1) Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 dip
switch 1 through 5 ("G" CB) are in the factory default position. S4 dip switch 1, 2, 5,6
are cleaning adjustments and the settings are exible. For factory default settings, see
"III.C.1. Default Dip Switch Settings."
2) Move the control switch to the "ICE" position. If the red "POWER OK" LED is on, control
voltage is good, continue to step 3. If the "POWER OK" LED is off, check CT secondary
circuit. CT output is 10.5VAC at 115VAC primary input. If the secondary circuit has
proper voltage and the red LED is off, replace CB.
If the secondary circuit does not have proper voltage, check CT primary circuit. Check
for 115VAC at CB K1 connector pin #10 (BR) to neutral (W) for 115VAC. Always choose
a white (W) neutral wire to establish a good neutral connection when checking voltages.
For additional checks, see "II.G.1. No Ice Production."
3) The "OUTPUT TEST" button provides a relay sequence test. Make sure the control
switch is in the "ICE" position, then press the "OUTPUT TEST" button. For the correct
lighting sequence, see the table below. Note that the order of the LEDs from the outer
edge of the control board is 1, 4, 3, 2. Components (e.g., compressor) cycle during the
test.
Control
Board
Correct LED
Lighting Sequence
"E" 2, 3, 4, 1
"G" 1, 4, 3, 2
Following the test, the icemaker begins operation at the 1-minute ll cycle for both "E"
and "G" control boards. If the LEDs do not light as described above, replace CB.
4) To verify voltage output from CB to the components, slide the CB K1 connector out far
enough to allow multimeter lead contact. With the icemaker in the cycle to be tested,
check output voltage from the corresponding pin on CB K1 connector to a neutral
(Wwire). If output voltage is not found and the appropriate LED is on, replace CB.
Legend: CB–control board; CT–control transformer
31
D. Bin Control Check
1. Thermostatic Bin Control Check
TBC shuts down the icemaker within 10 sec. when ice contacts the thermostatic bulb,
regardless of the cycle at activation.
NOTICE
When the ambient temperature is below 45°F (7°C), TBC opens and shuts down
the appliance even if the ice storage bin is empty. When BC is set in the prohibited
range, the appliance operates continuously even if the ice storage bin is lled with
ice. Setting in the prohibited range may result in severe damage to the appliance.
TBC is factory set, and generally no adjustment is required. However, adjustment may be
needed in some conditions, particularly at higher altitude locations.
Note: On "G" control boards, a jumper (4A4883G01) must be placed on CB red
K4connector. Otherwise, CB yellow "BC OPEN" LED is on and appliance will not
start.
To check TBC, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the control box cover, then clear any ice away from TBC bulb.
4) Disconnect TBC wires from TBC switch.
5) Hold your hand around the bulb to warm it up.
6) Check for continuity across TBC switch. If closed, continue to step 6. If open, adjust or
replace TBC.
7) With the multimeter test leads still in place, hold ice on TBC bulb to lower the
temperature. Within 10 sec., TBC switch should open. If it remains closed, adjust or
replace TBC.
Legend: TBC–thermostatic bin control
32
2. Mechanical Bin Control Check and Cleaning
a) Mechanical Bin Control Check
This appliance uses a lever-actuated proximity switch to control the ice level in the
storage bin. No adjustment is required.
To check MBC, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the control box cover, then clear any ice away from
MBC.
4) Check MBC wire harness connections. See Fig. 1.
5) Disconnect MBC connector from CB K4 connector.
6) Check for continuity across the wires of
MBC connector. When the actuator paddle
is not engaged, MBC switch is closed.
If open, check that the wire harness
connector is properly connected and that
the actuator paddle is not sticking. Clean if
necessary. See "II.D.2.b) Mechanical Bin
Control Cleaning." If MBC switch still reads
open, replace MBC.
7) Press and hold the actuator paddle; check for continuity across the wires of MBC
connector. When the actuator paddle is engaged, MBC switch is open. If closed, check
that the actuator paddle is not restricted. Clean if necessary. See "II.D.2.b) Mechanical
Bin Control Cleaning." If MBC switch still reads closed, replace MBC.
8) Reconnect MBC connector to CB K4 connector, then move the control switch to the
"ICE" position. Turn on the power supply.
9) Check that CB green "BC CLOSED" LED is on.
10) Allow the icemaker to cycle on. Press and hold the actuator paddle. CB yellow
"BCOPEN" LED should turn on and the icemaker should shut down according to the
chart below. If it does not, replace CB.
Cycle at
Mechanical Bin
Control Activation
Shutdown
Fill Cycle 15 sec. after activation.
Harvest Cycle At the end of the harvest cycle, or up to 15 sec. into the freeze cycle if activated at the
end of the harvest cycle.
Freeze Cycle 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
Legend: MBC–mechanical bin control; CB–control board
Actuator
Paddle
MBC
MBC Connector
(to control
board K4 (red)
connector)
MBC Wire
Harness (white)
Connector
Fig. 1
Model Shown: KM-901M_H/3
33
b) Mechanical Bin Control Cleaning
Scale may build up on MBC. Scale can cause the actuator paddle and magnet to stick. In
this case, MBC should be cleaned.
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the icemaker is serviced. Make sure that none have fallen
into the dispense unit/ice storage bin.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Clear any ice away from MBC.
4) Disconnect MBC connector from CB K4 connector, then remove MBC from the
icemaker.
5) Remove the actuator paddle from the switch mount. See Fig. 2.
6) Wipe down MBC with a mixture of 1 part of Hoshizaki "Scale Away" and 25 parts of
warm water. Rinse the parts thoroughly with clean water.
7) Reassemble MBC and replace it in its correct position.
Note: If the magnet was removed for cleaning, be sure to replace it in its correct
position.
8) Reconnect MBC connector to CB K4 connector, then move the control switch to the
"ICE" position.
9) Replace the control box cover in its correct position.
10) Turn on the power supply to start the automatic icemaking process.
11) Replace the front panel in its correct position.
Legend: MBC–mechanical bin control
KM-901M_H/3
MBC Bracket
Magnet
Actuator
Paddle
Switch Mount
Fig. 2
Bin Control Proximity
Switch Closed
(calling for ice)
Bin Control
Proximity Switch
Open (bin full,
icemaker off or
shutting down)
MBC Connector
(to control
board K4 (red)
connector)
MBC Wire
Harness (white)
Connector
Model Shown: KM-901M_H/3
34
E. Float Switch Check and Cleaning
FS is used to determine that there is sufficient water in the water tank after the 1-min.
ll cycle and after each harvest cycle. FS is also used to determine that the appropriate
volume of water has been converted into ice before switching out of the freeze cycle. No
adjustment is required.
1. Float Switch Check
To check FS, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the
control switch to the "OFF" position.
3) Drain the water tank.
a) On KM-320M_H, KM-515M_H,
KM-600M_H, KM-650M_H, and
KM-901M_H, remove the base cover, then
disconnect one end of the pump tubing to
drain the water tank. See Fig. 3. After the
water tank has drained, reconnect the pump
tubing.
b) On KM-1340M_H and KM-1601M_H, remove the rubber cap covering the overow
pipe in the water tank. Remove the overow pipe by turning it counterclockwise. After
the water tank has drained, replace the overow pipe and the rubber cap in their
correct positions. Note: Be sure the overow pipe o-ring is in its correct position on
the overow pipe.
4) Remove the control box cover.
5) Disconnect FS connector from CB K5connector.
6) Check for continuity across FS leads. With the water tank empty, FS should be open.
If open, continue to step 7. If closed, follow the steps in "II.E.2. Float Switch Cleaning."
After cleaning FS, check it again. Replace if necessary.
7) Reconnect FS connector to CB K5 connector, then replace the control box cover in its
correct position.
8) Move the control switch to the "ICE" position. Replace the front panel in its correct
position, then turn on the power supply. After 1 min., the 1-min. ll cycle should end and
the initial harvest cycle should begin. If the initial harvest cycle begins, FS is good and
the check is complete. If the initial harvest cycle does not begin, continue to step 9.
9) Turn off the power supply.
10) Remove the front panel. Move the control switch to the "OFF" position.
11) Remove the control box cover.
12) Disconnect FS connector from CB K5 connector.
Fig. 3
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover
35
13) Check for continuity across FS leads. With the water tank full, FS should be closed.
IfFS is closed and the icemaker will not switch from the 1-min. ll cycle to the initial
harvest cycle, replace CB.
If FS is open, conrm that the water tank is full. If the water tank is not full, check the
water supply, water lters, and inlet water valve. If the water tank is full, follow the
steps in "II.E.2. Float Switch Cleaning." After cleaning FS, check it again. Replace if
necessary.
Legend: CB–control board; FS–oat switch
2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the oat to stick. In this case, FS should be cleaned.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Drain the water tank.
a) On KM-320M_H, KM-515M_H, KM-600M_H, KM-650M_H, and KM-901M_H,
remove the base cover, then disconnect one end of the pump tubing to drain the
water tank. See Fig. 3. After the water tank has drained, reconnect the pump tubing.
b) On KM-1340M_H and KM-1601M_H, remove the rubber cap covering the overow
pipe in the water tank. Remove the overow pipe by turning it counterclockwise. After
the water tank has drained, replace the overow pipe and the rubber cap in their
correct positions. Note: Be sure the overow pipe o-ring is in its correct position on
the overow pipe.
4) Disconnect the vent tube and the ush tube from the top of FS, then remove FS
assembly and remove the rubber boot from the bottom of FS assembly. See Fig. 4.
5) Remove the retainer rod from the bottom of FS housing, then remove the oat. Be
careful not to bend the retainer rod excessively when removing it.
6) Wipe down FS housing, shaft, oat, and retainer rod with a mixture of 1 part Hoshizaki
"Scale Away" and 25 parts warm water. Clean the inside of the rubber boot and hose
with cleaning solution. Rinse the parts thoroughly with clean water.
7) Reassemble FS assembly and replace it and the rubber boot in their correct positions.
Reconnect the vent tube and the ush tube.
8) Move the control switch to the "ICE" position.
9) Replace the base cover (if applicable) and
front panel in their correct positions.
10) Turn on the power supply to start the
automatic icemaking process.
Legend: CB–control board; FS–oat switch
Fig. 4
Float
Float Switch
Housing
Rubber Boot
and Hose
Retainer Rod
Flush
Vent
Shaft
36
F. Thermistor Check
To check thermistor resistance, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel. Move the control switch to the "OFF" position.
3) Remove the control box cover.
4) Remove the thermistor from the refrigerant tubing.
5) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or
3 min.
6) Disconnect the thermistor connector from CB K3 connector and check the resistance
between thermistor leads. Normal range is 4.7 to 6.2 kΩ. If outside the normal range,
replace the thermistor. See "IV.B. Component Service Information." If within the normal
range, continue to the next step.
7) Replace the thermistor in its correct position. See "IV.B. Component Service
Information."
8) Reconnect the thermistor connector to CB K3 connector.
9) Replace the control box cover in its correct position.
10) Move the control switch to the "ICE" position.
11) Replace the front panel in its correct position.
12) Turn on the power supply.
13) Once the harvest cycle starts (Comp energizes), begin timing the harvest cycle.
14) The harvest timer and harvest cycle should terminate within 2 to 5 min. If the harvest
cycle does not terminate within 2 to 5 min., replace CB.
Legend: CB–control board; Comp–compressor
37
G. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply a) Off, blown fuse, or tripped breaker.
b) Not within specications.
2. Main Transformer
(208-230/60/1 Models with main
transformer and all 208-230/60/3
Models)
a) Voltage tap switch not set to proper voltage.
b) Coil winding open or shorted.
3. Fuse (Control Box) a) Blown.
4. Thermostatic Bin Control
See "II.D. Bin Control Check"
a) Tripped with bin lled with ice.
b) Ambient temperature too cool.
c) Set too warm.
d) Bulb out of position.
e) Open contacts, defective.
5. Control Switch a) In "OFF" or "WASH" position.
b) Bad contacts.
6. High-Pressure Switch a) Dirty condenser.
b) Fan motor not operating.
c) Refrigerant overcharged.
d) Bad contacts.
e) Refrigerant lines or components plugged.
7. Control Transformer
(115VAC/10.5VAC)
a) Coil winding open or shorted.
8. Control Board
See "II.C. Control Board Check"
a) In alarm.
b) Yellow "BC OPEN" LED on (bin full) ("G" control board).
c) Defective.
9. Mechanical Bin Control
See "II.D. Bin Control Check"
a) Tripped with bin lled with ice.
b) Actuator does not move freely.
c) Defective.
10. Water Supply a) Water supply off or improper water pressure.
b) External water lters clogged.
11. Inlet Water Valve a) Screen or orice clogged.
b) Coil winding open.
c) Water valve open in freeze cycle.
12. Float Switch
See "II.E. Float Switch Check
and Cleaning"
a) Float does not move freely.
b) Defective.
13. Compressor a) Compressor relay/magnetic contactor contacts bad or coil winding
open.
b) Start capacitor or run capacitor defective (single phase).
c) Internal protector open.
d) Start relay contacts bad or coil winding open (single phase).
e) Compressor defective.
38
No Ice Production - Possible Cause
14. Hot Gas Valve a) Closed in harvest cycle.
b) Open in freeze cycle.
15. Thermistor
See "II.F. Thermistor Check"
a) Loose, disconnected, or defective.
16. Pump Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
1 7. Thermostatic Expansion Valve a) Bulb loose.
b) Operating erratically.
18. Liquid Line Valve a) Closed in freeze cycle.
b) Open in harvest cycle.
19. Fan Motor a) Motor winding open.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
20. Water System a) Water leaks causing short freeze time.
2. Freeze-Up
Defrost and clean the icemaker prior to diagnosing freeze-up. Fill out a freeze-up checklist.
See the Hoshizaki America Technician's Pocket Guide or contact your local distributor for a
copy of the freeze-up checklist.
Freeze-Up - Possible Cause
Harvest Cycle
1. Evaporator a) Scaled up.
b) Damaged.
2. Cube Guides a) Out of position.
b) Damaged.
3. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
4. Water Supply a) Low water pressure.
b) External water lters clogged.
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) copper
water tubing or equivalent.
5. Inlet Water Valve a) Screen or orice clogged.
b) Defective.
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
a) Dirty, sticking.
b) Defective.
7. Refrigerant Charge a) Low.
8. Control Board
See "III.C. Settings and
Adjustments" and "II.C. Control
Board Check"
a) Harvest timer (S4 dip switch 1 & 2) set too short.
b) Harvest pump timer (S4 dip switch 7) not in factory default position
("G" control board).
c) Defective.
39
Freeze-Up - Possible Cause
9. Bin Control
See "II.D. Bin Control Check"
a) Actuator does not move freely.
10. Thermistor
See "II.F. Thermistor Check"
a) Loose, disconnected, or defective.
11. Thermostatic Expansion Valve a) Defective.
12. Hot Gas Valve a) Closed or restricted.
13. Liquid Line Valve a) Open.
Freeze Cycle
1. Evaporator a) Scaled up.
b) Damaged.
2. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
3. Refrigerant Charge a) Low.
4. Control Board
See "II.C. Control Board Check"
a) Freeze timer (S4 dip switch 9 & 10) set incorrectly.
b) Defective.
5. Inlet Water Valve a) Leaking by.
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
a) Float does not move freely.
b) Defective.
7. Pump Motor a) RPM too slow.
b) Impeller damaged.
8. Thermostatic Expansion Valve a) Bulb loose or defective.
9. Liquid Line Valve a) Restricted.
10. Headmaster (C.P.R.)
(remote models)
a) Not bypassing.
3. Low Ice Production
Low Ice Production - Possible Cause
Long Harvest Cycle
1. Evaporator a) Scaled up.
2. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
3. Refrigerant Charge a) Low.
4. Water Supply a) Low water pressure.
b) External water lters clogged.
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) water
tubing or equivalent.
d) Too cold.
5. Control Board
See "II.C. Control Board Check"
a) Thermistor connection loose (K3).
b) Defective.
6. Thermistor
See "II.F. Thermistor Check"
a) Loose, disconnected, or defective.
7. Hot Gas Valve a) Erratic or closed.
40
Low Ice Production - Possible Cause
8. Inlet Water Valve a) Screen or orice clogged.
9. Compressor a) Inefficient or off.
10. Liquid Line Valve a) Erratic or open.
11. Thermostatic Expansion Valve a) Defective.
Long Freeze Cycle
1. Evaporator a) Scaled up, dirty.
2. Float Switch
See "II.E. Float Switch Check
and Cleaning"
a) Scaled up, dirty.
b) Float sticking.
c) Defective switch.
3. Inlet Water Valve a) Leaking by.
4. Hot Gas Valve a) Erratic or open.
5. Condenser a) Clogged.
6. Control Board
See "II.C. Control Board Check"
a) Float switch connection loose (K5).
b) Defective.
7. Refrigerant Charge a) Low.
8. Thermostatic Expansion Valve a) Bulb loose.
b) Defective.
9. Compressor a) Inefficient or off.
10. Pump Motor a) RPM too slow.
11. Liquid Line Valve a) Erratic or restricted.
12. Headmaster (C.P.R.)
(remote models)
a) Not bypassing.
41
III. Controls and Adjustments
• A Hoshizaki exclusive control board is employed in KM series appliances.
• All models are pretested and factory adjusted.
• For a control board check procedure, see "II.C. Control Board Check."
NOTICE
• Fragile, handle very carefully.
• The control board contains integrated circuits, which are susceptible to failure
due to static discharge. It is especially important to touch the metal part of the
icemaker when handling or replacing the control board.
• Do not touch the electronic devices on the control board or the back of the control
board.
• Do not change wiring and connections. Do not misconnect K3 WHITE, K4RED,
and K5 BLACK, because the same connector is used for the thermistor,
mechanical bin control, and oat switch. K4 RED is not used on "E" control board
models.
• Do not short out power supply to test for voltage.
• Always replace the whole control board assembly if it goes bad.
42
A. Control Board Layout
1. "E" Control Board
"E" Control Board
Part Number 2A1410-02
"E" Control Board
Microprocessor
(control board revision
level indicated on label
on side of relay)
• Part Number
• K1 Connector
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
Liquid Line Valve
#4 Pump Motor (icemaking)
#5 Pump Motor (pump-out)
#6 Inlet Water Valve
#7, 10 Component Power
Supply
#8 Open
Switch for "C" control board
and "ALPINE" control board
(service control board only)
Set to "ALP" for appliances
covered in this manual.
• Freeze Timer
LED (yellow)
• Harvest Backup
Timer LED (orange)
• K2 Connector
Control Transformer
(10.5VAC)
• "ALARM RESET" Button
• S4 Dip Switch
• "OUTPUT TEST" Button
(used to test relays on control board)
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K4 (red) Connector
Open
• K5 (black) Connector
Float Switch
(water level)
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• LED 4 (X4 Relay)
K1 Connector Pin #6
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
(energized in freeze)
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• Alarm Buzzer
43
"G" Control Board
Part Number 2A3792-01
"G" Control Board
• K4 (red) Connector
Mechanical Bin Control or
K4 Jumper (thermostatic
bin control application)
Label
(control board revision
level indicated on label
on side of relay)
• K1 Connector
Pins #1 through #10
#1, 9 Magnetic Contactor or
Compressor Relay
#2 Hot Gas Valve
#3 Fan Motor
Liquid Line Valve
#4 Pump Motor (icemaking)
#5 Pump Motor
(harvest pump timer and
pump-out)
#6 Inlet Water Valve
#7, 10 Component Power
Supply
#8 Open
• Bin Control Switch
Open LED (yellow)
(mechanical bin
control application only)
• Bin Control Switch
Closed LED (green)
(on continuously
in thermostatic bin
control application)
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #2
LED 2 off:
K1 Connector Pin #3
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #5
LED 3 off:
K1 Connector Pin #4
(energized in freeze)
• LED 4 (X4 Relay)
K1 Connector Pin #6
• LED 1 (X1 Relay)
K1 Connector Pin #1, #9
• K2 Connector
Control Transformer
(10.5VAC)
• S5 Dip Switch
• "ALARM RESET" Button
• S4 Dip Switch
• "OUTPUT TEST" Button
(used to test relays on control board)
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K5 (black) Connector
Float Switch
(water level)
• Part Number
• Alarm Buzzer
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
2. "G" Control Board
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
44
B. LED Lights and Audible Alarm Safeties
1. "E" Control Board
At startup, a 5-second delay occurs while the control board conducts an internal timer
check. A beep occurs when power is turned off. The red "POWER OK" LED indicates
proper control voltage and remains on unless a control voltage problem occurs. The
green LEDs 1 through 4 energize and sequence from initial startup as listed in the
table below. Note that the order of the LEDs from the outer edge of the control board
is 1, 4, 3, 2.
Sequence Step LED
Energized
Components
Time LEDs are On
Min. Max. Avg.
1-Minute Fill Cycle 4 WV 1 minute
Harvest Cycle 1, 4, 2 Comp, FMR, HGV, WV 2 minutes 20 minutes 3 to 5 minutes
Freeze Cycle 1 Comp, FM/FMR, PM,
LLV
5 minutes freeze timer
setting
30 to 35 minutes
Pump-Out Cycle 1, 4*, 3, 2 Comp, FMR, HGV, PM,
WV*
10 seconds 20 seconds *pump-out timer
setting
The built in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
Type of Alarm Notes
1 High Evaporator Temp.
(temperature > 127°F) (53°C)
Check for harvest problem (stuck HGV or relay), hot
water entering icemaker, or shorted thermistor.
2 Harvest Backup Timer
(harvest > 20 min. for two cycles
in a row)
Orange "H TIMER" LED on.
Check for open thermistor, HGV not opening, TXV or
LLV leaking by, low charge, or inefficient Comp, or WRV
leaking by.
3 Freeze Timer
(freeze > specied setting for
two cycles in a row)
Yellow "F TIMER" LED on.
Check for FS stuck closed (up), WV leaking by, HGV
leaking by, PM not pumping, TXV not feeding properly,
LLV not opening, low charge, HM not bypassing, or
inefficient Comp.
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6 Low Voltage
(92Vac±5% or less)
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
7 High Voltage
(147Vac±5% or more)
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–oat switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); L LV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
45
2. "G" Control Board
At startup, a 5-second delay occurs while the control board conducts an internal timer
check. A beep occurs when the control switch is moved to the "ICE" position. The red
"POWER OK" LED indicates proper control voltage and remains on unless a control
voltage problem occurs. The green LEDs 1 through 4 energize and sequence from
initial startup as listed in the table below. Note that the order of the LEDs from the
outer edge of the control board is 1, 4, 3, 2.
Sequence Step LED
Energized
Components
Time LEDs are On
Min. Max. Avg.
1-Minute Fill Cycle 4 WV 1 minute
Harvest Cycle 1, 4, 2 Comp, FMR, HGV, WV 2 minutes 20 minutes 3 to 5 minutes
Harvest Pump Timer 1, 3, 2 Comp, FMR, HGV, PM 0 seconds 50 seconds harvest pump timer
setting
Freeze Cycle 1 Comp, FM/FMR, PM,
LLV
5 minutes freeze timer
setting
30 to 35 minutes
Pump-Out Cycle 1, 4*, 3, 2 Comp, FMR, HGV, PM,
WV*
10 seconds 20 seconds *pump-out timer
setting
The built-in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
Type of Alarm Notes
1 High Evaporator Temp.
(temperature > 127°F) (53°C)
Check for harvest problem (stuck HGV or relay), hot
water entering icemaker, or shorted thermistor.
2 Harvest Backup Timer
(harvest > 20 min. for two
cycles in a row)
Check for open thermistor, HGV not opening, TXV or
LLV leaking by, low charge, or inefficient Comp, or WRV
leaking by.
3 Freeze Timer
(freeze > freeze timer setting
for two cycles in a row)
Check for FS stuck closed (up), WV leaking by, HGV
leaking by, PM not pumping, TXV not feeding properly,
LLV not opening, low charge, HM not bypassing, or
inefficient Comp.
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6 Low Voltage
(92Vac±5% or less)
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
7 High Voltage
(147Vac±5% or more)
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–oat switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); L LV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
46
C. Settings and Adjustments
NOTICE
Dip switches are factory set. Failure to maintain factory settings may adversely
affect performance and warranty coverage. For more information, contact your
Hoshizaki Service Center.
1. Default Dip Switch Settings
The dip switches are factory-adjusted to the following positions for both the "E" and "G"
control boards:
a) "E" and "G" Control Board without Harvest Pump Timer Operation
"E" Control Board S4 Dip Switch No. 1 2 3 4 5 6 7 8 9 10
KM-320MAH, KM-320MWH
OFF OFF OFF ON ON ON OFF OFF OFF OFF
KM-515MAH, KM-515MWH, KM-515MRH OFF OFF OFF OFF OFF OFF OFF OFF ON OFF
KM-600MAH, KM-650MAH, KM-650MWH OFF OFF OFF OFF ON ON OFF OFF OFF OFF
KM-650MRH OFF OFF OFF OFF ON ON OFF OFF ON OFF
KM-901MAH, KM-901MWH, KM-901MRH/3 ON OFF ON OFF ON ON OFF OFF OFF ON
KM-1100MAH, KM-1100MWH, KM-1100MRH OFF OFF OFF OFF ON ON ON OFF OFF OFF
KM-1340MAH OFF OFF ON ON ON ON OFF OFF OFF OFF
KM-1340MWH, KM-1601MRH/3 OFF OFF ON OFF ON ON OFF OFF OFF ON
KM-1340MRH, KM-1340MRH3 OFF OFF ON OFF ON ON OFF OFF OFF OFF
b) "G" Control Board with Harvest Pump Timer Operation
S4 Dip Switch No. 1 2 3 4 5 6 7 8 9 10
KM-340MAH, KM-340MWH OFF OFF ON OFF ON ON ON OFF ON OFF
KM-515MAH OFF OFF OFF OFF ON ON ON OFF ON OFF
KM-650MAH, KM-650MRH ON OFF OFF OFF ON ON ON OFF OFF OFF
KM-650MWH OFF OFF OFF OFF ON ON ON OFF OFF OFF
KM-901MAH OFF OFF ON OFF ON ON ON OFF OFF ON
S5 Dip Switch (Do Not Adjust)
"G" Control Board
Dip Switch No.
1 2 3 4 5
All Models OFF OFF OFF OFF OFF
2. Harvest Timer (S4 dip switch 1 & 2)
Freeze Timer (9 & 10)
Pump-Out Frequency Control (5 & 6)
Pump-Out Timer (3 & 4)
Harvest Timer (1 & 2)
Factory Use (8)
Bin Control Selector (7) "E" Control Board
Harvest Pump Timer (7) "G" Control Board
(Do Not Adjust)
1 2 3 4 5 6 7 8 9 10
ON
S4 Dip Switch
"E" and "G" Control Boards
1 2 3 4 5
ON
Do Not Adjust
S5 Dip Switch
"G" Control Board Only
Rell Counter
(2 through 5)
Float Switch
Selector (1)
47
The harvest timer starts counting when the thermistor reaches 48°F (9°C) at the
evaporator outlet and the control board reads 3.9 kΩ from the thermistor. The harvest
timer is factory set, and generally no adjustment is required. However, a setting longer
than the factory setting may be advised in cases where the drain provided at harvest
needs to be prolonged for extra cleaning. Before changing this setting, contact Hoshizaki
Technical Support at 1-800-233-1940 for recommendations. Keep in mind that setting the
harvest timer to a longer setting decreases 24-hour production.
Note that the pump-out timer (S4 dip switch 3 & 4) acts in place of the harvest timer
during cycles with a pump out. For details, see "III.C.3. Pump-Out Timer (S4 dip switch
3& 4)."
Note: On models with a pump-out every cycle, the harvest timer is only relevant during
the initial harvest cycle since a pump out occurs every cycle thereafter.
S4 Dip Switch Setting Time
(sec.)
No. 1 No. 2
OFF OFF 60
ON OFF 90
OFF ON 120
ON ON 180
3. Pump-Out Timer (S4 dip switch 3 & 4)
NOTICE
• On KM-515M_H models without harvest pump timer operation, never
adjust the pump-out timer's harvest timer (T2) for a time less than
150 sec. Otherwise, the icemaker will not perform properly.
• On models with harvest pump timer, do not adjust 3 off and 4 on. Pump
does not run in pump-out rotation in this setting.
When a pump-out is called for, the pump motor stops for 2 sec., then energizes in the
reverse direction, taking water from the bottom of the water tank and forcing pressure
against the check valve seat allowing water to go through the check valve and down
the drain. At the same time, water ows through the small tube to power ush the oat
switch. The pump motor drains the water tank for the time determined by the pump-out
timer. The pump-out timer also acts in place of the harvest timer during cycles with a
pump-out. The pump-out timer is factory set, and generally no adjustment is required.
However, where water quality is bad and the icemaker needs a longer pump-out time,
the pump-out timer can be adjusted. The pump-out timer control can be set to pump-out
for 10 or 20 sec.
S4 Dip Switch Setting Time (sec.)
Inlet Water
ValveNo. 3 No. 4
T1
T2
OFF OFF 10 150 Closed
ON OFF 10 180 Closed
OFF ON 10 120 Open
ON ON 20 180 Closed
T1: Time to drain the water tank
T2: Harvest timer at pump out
48
4. Pump-Out Frequency Control (S4 dip switch 5 & 6)
NOTICE
Do not adjust on KM-515M_H without harvest pump timer. Adjustments to this setting
on KM-515M_H without harvest pump timer may adversely affect performance and
warranty coverage.
The pump-out frequency control is factory set to drain the water tank every 10 cycles
on all KM-320M_H, KM-600MAH, KM-650M_H, KM-901M_H/3 and on KM-515MAH
with harvest pump timer, and every cycle on KM-515M_H without harvest pump timer.
Generally no adjustment is required. However, where water quality is bad and the
icemaker needs a pump-out more often, the pump-out frequency can be adjusted. The
pump-out frequency control can be set to have a pump-out occur every cycle, or every
2, 5, or 10 cycles.
Timing of the rst pump-out is dependent on the control board. On "E" control boards, the
rst pump-out is after the rst freeze cycle. On "G" control boards, the rst pump-out is
dependent on S4 dip switch 5 & 6. See the table below.
"E" & "G" Control Board 1st Pump-Out
S4 Dip Switch Setting
Pump-Out
Frequency
"E" Control Board "G" Control Board
No. 5 No. 6
OFF OFF Every cycle After 1st freeze cycle After 2nd freeze cycle
ON OFF Every 2 cycles After 3rd freeze cycle
OFF ON Every 5 cycles After 6th freeze cycle
ON ON Every 10 cycles After 11th freeze cycle
5. Bin Control Selector or Harvest Pump Timer Operation (S4 dip switch 7)
Depending on the control board, S4 dip switch 7 is used for either bin control selection or
harvest pump timer operation.
(1) Bin Control Selector, "E" Control Board
NOTICE
Do not adjust. This dip switch must be left in the factory default position or the
icemaker will not operate correctly.
When set to on position on an icemaker with a thermostatic bin control, a 5-beep alarm
sounds (open circuit) and the icemaker does not operate.
"E" Control Board
S4 Dip Switch Setting
Bin Control
No. 7
ON Mechanical (requires resistor wire harness)
OFF Thermostatic
49
(2) Harvest Pump Timer, "G" Control Board
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
Depending on the harvest pump timer setting, the pump motor either stays off or is
energized the last 50 seconds of harvest. When the pump motor is energized, water
circulates over the evaporator. The harvest water valve is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0 or 50 seconds (determined by
the harvest pump timer setting), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X11 and X10 relays
energize. A latching circuit is created through the X11 and X10 relays. For further details,
see "VIII.C. Wiring Diagrams."
50 sec. before harvest termination, LED 4 turns off, inlet water valve and X11 relay
de-energize. X10 relay remains energized through the latching circuit. Next, LED 3 turns
on and control board K1 connector pin #5 (DBU wire) energizes, energizing the pump
motor for the last 50 sec. of harvest.
"G" Control Board
S4 Dip Switch Setting
Pump Motor
Time (sec.)
No. 7
ON 50
OFF 0
6. Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
7. Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specication, or the icemaker may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent possible
freeze-up issues. Upon termination of the freeze timer, the control board initiates the
harvest cycle or pump-out cycle. After 2 consecutive freeze timer terminations, the
control board shuts down the icemaker. In this case, see "II.G.3. Low Ice Production"
for possible solutions. The freeze timer is factory set and no adjustment is required.
Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for
recommendations.
S4 Dip Switch Setting Time
(min.)
No. 9 No. 10
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 75
50
8. Float Switch Selector (S5 dip switch 1): "G" Control Board
NOTICE
Do not adjust. This must be left in the factory default position or the icemaker will
not operate correctly.
9. Rell Counter (S5 dip switch 2 through 5): "G" Control Board
NOTICE
Do not adjust. These must be left in the factory default position or the icemaker will
not operate correctly.
D. Control Switch
The control switch has three positions: "OFF" for power off, "ICE" for icemaking, and
"WASH" to energize the pump motor when cleaning and sanitizing.
51
IV. Refrigeration Circuit and Component Service Information
WARNING
• This appliance should be diagnosed and repaired only by qualied service
personnel to reduce the risk of death, electric shock, serious injury, or re.
• Move the control switch to the "OFF" position and turn off the power supply. Place
the disconnect in the "OFF" position. Lockout/Tagout to prevent the power supply
from being turned back on inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the icemaker is serviced. Make sure that none have fallen
into the dispenser unit/ice storage bin.
• Make sure all food zones in the icemaker and dispenser unit/ice storage bin are
clean after service.
A. Refrigeration Circuit Service Information
WARNING
• Repairs requiring the refrigeration circuit to be opened must be performed by
properly trained and EPA-certied service personnel.
• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). Do not use R-404A as a mixture with
pressurized air for leak testing.
NOTICE
• Always recover the refrigerant and store it in an approved container. Do not
discharge the refrigerant into the atmosphere.
• Do not leave the system open for longer than 15 min. when replacing or servicing
parts. The Polyol Ester (POE) oils used in R-404A applications can absorb
moisture quickly. Therefore it is important to prevent moisture from entering the
system when replacing or servicing parts.
• Always install a new drier every time the sealed refrigeration system is opened.
Do not replace the drier until after all other repair or replacement has been made.
Install the new drier with the arrow on the drier in the direction of the refrigerant
ow.
• When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).
1. Refrigerant Recovery
The icemaker is provided with refrigerant access valves. Using proper refrigerant practices,
recover the refrigerant. Store the refrigerant in an approved container. Do not discharge the
refrigerant into the atmosphere.
52
2. Brazing
WARNING
• R-404A itself is not ammable at atmospheric pressure and temperatures up to
176°F (80°C).
• R-404A itself is not explosive or poisonous. However, when exposed to high
temperatures (open ames), R-404A can be decomposed to form hydrouoric
acid and carbonyl uoride both of which are hazardous.
• Do not use silver alloy or copper alloy containing arsenic.
1) Braze all ttings while purging with nitrogen gas owing at a pressure of 3 to 4 PSIG.
Note: Because the pipes in the evaporator case are specially coated to resist corrosion,
it is important to make connections outside the evaporator case when possible. If
it is necessary to braze inside the evaporator case, use sandpaper to remove the
coating from the brazing connections before unbrazing the components.
NOTICE
• Always install a new drier every time the sealed refrigeration system is opened.
• Do not replace the drier until after all other repair or replacement has been made.
Install the new drier with the arrow on the drier in the direction of the refrigerant
ow.
• When brazing, protect the drier by using a wet cloth to prevent the drier from
overheating. Do not allow the drier to exceed 250°F (121°C).
2) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). Do not use R-404A as a mixture with
pressurized air for leak testing.
3. Evacuation and Recharge (R-404A)
1) Attach a vacuum pump to the system. Be sure to connect the charging hoses to both
high and low-side refrigerant access valves.
IMPORTANT
The vacuum level and vacuum pump may be the same as those for current
refrigerants. However, the rubber hose and gauge manifold to be used for
evacuation and refrigerant charge should be exclusively for POE oils.
2) Turn on the vacuum pump. Open the gauge manifold valves. Never allow the oil in the
vacuum pump to ow backwards.
3) Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period depends
on pump capacity.
4) Close the low-side valve and high-side valve on the gauge manifold.
53
5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a
refrigerant service cylinder. Remember to loosen the connection and purge the air from
the hose. For the required refrigerant charge, see the rating label inside the icemaker.
Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets
ARI Standard 700 (latest edition) be used.
6) A liquid charge is required when charging an R-404A system (to prevent fractionation).
Place the service cylinder on the scales; if the service cylinder is not equipped with
a dip tube, invert the service cylinder, then place it on the scales. Open the high-side
valve on the gauge manifold.
7) Allow the system to charge with liquid until the proper charge weight is met.
8) If necessary, add any remaining charge to the system through the low-side.
NOTICE!To prevent compressor damage, use a throttling valve or liquid
dispensing device to add the remaining liquid charge through the low-side
refrigerant access valve with the icemaker running.
9) Close the high and low-side gauge manifold valves, then disconnect the gauge manifold
hoses.
10) Cap the refrigerant access valves to prevent a possible leak.
54
B. Component Service Information
NOTICE
When replacing a component listed below, see the notes to help ensure proper
operation.
Component Notes
Compressor 1 phase: Install a new start capacitor, run capacitor, and start relay.
3 phase: Install a new magnetic contactor.
Thermostatic
Expansion Valves
• Attach the thermostatic expansion valve bulb to the suction line in the same location as
the previous bulb.
• The bulb should be between the 10 and 2 o'clock positions on the tube.
• Secure the bulb with the clamp and holder, then insulate it.
Hot Gas Valves
Liquid Line
Valves
• Replace the strainer if applicable.
• Use copper tube of the same diameter and length when replacing valve lines.
Fan Motors Install a new capacitor.
Pump Motor Install a new capacitor.
Thermistor • Attach the new thermistor to the suction line in the same location as the previous
thermistor.
• The thermistor should be at the 12 o'clock position on the tube.
• Smoothly ll the recessed area of the thermistor holder with high thermal conductive
type sealant. Hoshizaki America part number 4A0683-01 (Silicone Heat Sink Compound
10-8108 manufactured by GC Electronics), KE-4560 RTV (manufactured by ShinEtsu
Silicones), or equivalent are recommended.
• Secure the thermistor with the holder, then insulate it.
• Be very careful to prevent damage to the leads.
C. Water Regulating Valve Adjustment (water-cooled model)
The water regulating valve is factory set, and generally no adjustment is required. However,
when necessary, adjust the water regulator using the following procedure.
1) Prepare a thermometer to check the condenser drain temperature. Attach a pressure
gauge to the high-side line of the system.
2) 5 min. after a freeze cycle starts, conrm
that the thermometer reads 104°F to 115°F
(40°C to 46°C). If it does not, rotate the
adjustment screw by using a at blade
screwdriver until the temperature is in the
proper range. See Fig. 5. Next, check that
the reference pressure is in the range
indicated in the Head Pressure table in the
Performance Data section. If it is not in the
proper range, verify the refrigerant charge.
3) Check that the condenser drain temperature is stable.
Fig. 5
Adjustment Screw
CW – Higher
CCW – Lower
Top View
55
V. Maintenance
The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the appliance's environment, and local sanitation
regulations
WARNING
• Only qualied service technicians should service the appliance.
• To reduce the risk of electric shock, do not touch the control switch or service
switch with damp hands
• Before servicing: Move the control switch to the "OFF" position and turn off the
power supply. Place the disconnect in the "OFF" position.
Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any maintenance is done to the icemaker. Make sure that
none have fallen into the dispenser unit/ice storage bin.
Maintenance Schedule
Frequency Area Task
Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after
cleaning.
Bi-Weekly Air Filters Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly External Water
Filters
Check for proper pressure and change if necessary.
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a
neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
(rust colored spots) using a non-abrasive cleanser.
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Wipe down with a clean cloth and warm water.
Yearly Icemaker and
Dispenser Unit/Ice
Storage Bin Liner
Clean and sanitize per the cleaning and sanitizing instructions provided
in the instruction manual or maintenance label on the icemaker.
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
system. Clean the water supply inlet screen.
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More
frequent cleaning may be required depending on location.
Water Hoses Inspect the water hoses and clean/replace if necessary.
56
VI. Preparing the Appliance for Periods of Non-Use
NOTICE
• When storing the appliance for an extended time or in sub-freezing temperatures,
follow the instructions below to prevent damage.
• To prevent damage to the water pump, do not operate the appliance with the
control switch in the "WASH" position when the water tank is empty.
When the appliance is not used for two or three days under normal conditions, it is
sufficient to move the control switch to the "OFF" position. When storing the appliance for
an extended time or in sub-freezing temperatures, follow the instructions below.
1. Remove the water from the icemaker water line:
1) Turn off the power supply, then remove the front panel.
2) Close the icemaker water supply line shut-off valve and open the icemaker water supply
line drain valve.
3) Allow the line to drain by gravity.
4) Attach a compressed air or carbon dioxide supply to the icemaker water supply line
drain valve.
5) Make sure at least 3 min. have elapsed since you turned off the power supply. Make
sure the control switch is in the "ICE" position. Replace the front panel in its correct
position, then turn on the power supply.
6) Blow the icemaker water supply line out using the compressed air or carbon dioxide
supply.
7) Close the icemaker water supply line drain valve.
2. Remove the water from the water tank:
1) Turn off the power supply, then remove the front panel.
2) Move the control switch to the "OFF" position.
3) Drain the water tank.
a) On KM-320M_H, KM-515M_H,
KM-600M_H, KM-650M_H, and
KM-901M_H, remove the base cover, then
disconnect one end of the pump tubing to
drain the water tank. See Fig. 6. After the
water tank has drained, reconnect the pump
tubing.
b) On KM-1340M_H and KM-1601M_H, remove the rubber cap covering the overow
pipe in the water tank. Remove the overow pipe by turning it counterclockwise. After
the water tank has drained, replace the overow pipe and the rubber cap in their
correct positions.Note: Be sure the overow pipe o-ring is in its correct position on
the overow pipe.
Fig. 6
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover
57
4) Replace the base cover (if applicable) and front panel in their correct positions.
5) Remove all ice from the dispensing unit/ice storage bin. Clean the storage bin liner
using a neutral cleaner. Rinse thoroughly after cleaning.
3. On water-cooled model, remove the water from the water-cooled condenser:
1) Make sure the power supply is off, then remove the front panel and right side panel.
2) Close the condenser water supply line shut-off valve. If connected to a closed loop
system, also close the condenser return line shut-off valve.
3) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
4) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer
underneath the spring. While holding the valve open, blow out the condenser using the
compressed air or carbon dioxide supply until water stops coming out.
6) Close the drain valve(s).
7) Replace the right side panel and front panel in their correct positions.
58
VII. Disposal
The appliance contains refrigerant and must be disposed of in accordance with
applicable national, state, and local codes and regulations. Refrigerant must be
recovered by properly certied service personnel.
59
VIII. Technical Information
We reserve the right to make changes in specications and design without prior notice.
A. Specication and Performance Data Sheets
Pressure data is recorded at 5 min. into freezing cycle. The data not in bold should be
used for reference only.
1. KM-320MAH
Specifications
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 9.7 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 770(7.5) 730(5.6)
WATER gal./24HR (gal./100 lbs.) 77(31.2) 117(35.9)
ICE PRODUCTION PER CYCLE 7.2 lbs. (3.3 kg) 360 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R-404A, 1 lb. 4.3 oz. (575g)
Performance Dat
a
70/21 310 141 291 132 265 120
80/27 296 134 267 121 239 109
90/32 291 132 246 112 218 99
lbs./day kg./da
y
100/38 286 130 240 109 193 88
70/21
80/27
90/32
watts 100/38
70/21 173 0.65
145 0.55 126 0.48
80/27 151 0.57 108 0.41 100 0.38
90/32 145 0.55 77 0.29 64 0.24
gal./day m
3
/day
100/38 111 0.42 74 0.28 53 0.20
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 237 16.7
256 18.0 279 19.6
80/27 251 17.7 280 19.7 302 21.2
90/32 256 18.0 301 21.2 323 22.7
PSIG kg/cm
2
G
100/38 259 18.2 306 21.5 344 24.2
70/21 59 4.1 60 4.2 62 4.3
80/27 60 4.2 61 4.3 63 4.4
90/32 60 4.2 62 4.4 64 4.5
PSIG kg/cm
2
G
100/38 60 4.3 62 4.4 66 4.6
3.5 2.3 2.2
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 6,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
HARVEST CYCLE TIME
5.2 4.4 4.0
4.6 3.3 3.4
4.4 2.4 2.3
43
35 41 46
36 42 50
747 775 810
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
33 35 39
35 38
APPROXIMATE ELECTRIC
CONSUMPTION
730 742 761
739 757 778
742 770 791
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
ENG.F-011.1.0205
60
2. KM-320MWH
Specification Sheet
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 8.2 A (5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 690(5.2) 710(4.9)
WATER gal./24HR (gal./100 lbs.) 70(21.9) 146(41.5)
WATER COOLED CONDENSER 384(121) 193(55)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 8.6 lbs. (3.9 kg) 360 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R-404A, 1 lb. 0.8 oz. (475g)
Performance Data
70/21 351 159
341 155 320 145
80/27 344 156 329 149 302 137
90/32 341 155 318 144 293 133
lbs./day kg./da
y
100/38 334 152 312 142 270 122
70/21
80/27
90/32
watts 100/38
70/21 339 1.28
372 1.41 589 2.23
80/27 364 1.38 417 1.58 727 2.75
90/32 372 1.41 453 1.72 729 2.76
gal./day m
3
/day
100/38 495 1.88 518 1.96 982 3.72
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 269 18.9
270 19.0 273 19.2
80/27 270 19.0 272 19.1 276 19.4
90/32 270 19.0 273 19.2 277 19.5
PSIG kg/cm
2
G
100/38 271 19.1 274 19.3 280 19.7
70/21 56 3.9 57 4.0 58 4.1
80/27 57 4.0 59 4.1 59 4.2
90/32 57 4.0 61 4.3 61 4.3
PSIG kg/cm
2
G
100/38 57 4.0 61 4.3 62 4.3
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 38.5 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP
(°F/°C)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
710 704 714
706 696 716
704 690 706
712 694 720
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
32 33 35
33 35 37
33 36 39
34 37 41
HARVEST CYCLE TIME
4.3 3.7 3.5
3.9 3.0 3.0
3.7 2.3 2.2
3.1 2.3 2.2
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 5,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
61
3. KM-340MAH
Specification Shee
t
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 9.7 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 810(5.99) 750(4.68)
WATER gal./24HR (gal./100 lbs.) 65(20.0) 153(39.5)
ICE PRODUCTION PER CYCLE 11.3 lbs. (5.1 kg) 480pcs.
BIN CONTROL SYSTEM Mechanical Bin Control
REFRIGERANT CHARGE R404A, 1 lb. 8 oz. (680g)
Performance Dat
a
70/21 387 176 369 167 331 150
80/27 373 169 345 156 301 136
90/32 369 167 325 147 283 128
lbs./day kg./da
y
100/38 357 162 315 143 244 111
70/21
80/27
90/32
watts 100/38
70/21 153 0.58
127 0.48 105 0.40
80/27 133 0.50 93 0.35 78 0.30
90/32 127 0.48 65 0.25 46 0.18
gal./day m
3
/day
100/38 94 0.36 61 0.23 29 0.11
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 220 15.5
241 16.9 259 18.2
80/27 236 16.6 268 18.8 280 19.7
90/32 241 16.9 290 20.4 306 21.5
PSIG kg/cm
2
G
100/38 241 16.9 294 20.6 320 22.5
70/21 50 3.5 53 3.7 56 3.9
80/27 52 3.7 57 4.0 59 4.2
90/32 53 3.7 60 4.2 63 4.4
PSIG kg/cm
2
G
100/38 53 3.7 61 4.3 65 4.6
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
750 768 785
763 791 804
768 810 826
769 814 840
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
39 42 46
41 46 50
42 49 53
43 50 57
HARVEST CYCLE TIME
4.2 3.7 3.4
3.8 3.0 2.9
3.7 2.5 2.3
3.1 2.5 2.1
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 6,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
62
4. KM-340MWH
Specification Sheet
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 7.4A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 730(4.85) 730(4.52)
WATER gal./24HR (gal./100 lbs.) 74(20.5) 152(39.3)
WATER COOLED CONDENSER 414(115) 181(47)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE
11.3 lbs. (5.1 kg) 480pcs.
BIN CONTROL SYSTEM
Mechanical Bin Control
REFRIGERANT CHARGE
R404A, 1 lb. 0.8 oz. (475g)
Performance Data
70/21 386 175
378 172 360 163
80/27 380 172 368 167 346 157
90/32 378 172 360 163 339 154
lbs./day kg./day 100/38 372 169 355 161 320 145
70/21
80/27
90/32
watts 100/38
70/21 332 1.26
378 1.43 769 2.91
80/27 367 1.39 438 1.66 1012 3.83
90/32 378 1.43 488 1.85 993 3.76
gal./day m3/day 100/38 587 2.22 606 2.29 1457 5.51
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 264 18.6
264 18.6 267 18.8
80/27 264 18.6 265 18.6 268 18.9
90/32 264 18.6 265 18.6 268 18.9
PSIG kg/cm2G 100/38 265 18.7 266 18.7 271 19.1
70/21 57 4.0 58 4.0 61 4.3
80/27 57 4.0 58 4.1 63 4.4
90/32 58 4.0 59 4.1 63 4.4
PSIG k
g
/cm2G 100/38 59 4.2 60 4.2 67 4.7
7,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 57 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT
TEMP. (ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
730
730 734
730 730 736
730
730
735
732 731 740
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
38
39 42
39 41 44
39
42
45
TOTAL HEAT OF REJECTION FROM CONDENSER
HARVEST CYCLE TIME
4.9
4.3 3.9
4.5 3.5 3.4
4.3
2.9
2.6
3.6 2.8 2.3
HEAD PRESSURE
SUCTION PRESSURE
40 43 48
ENG.F-011.1.0205
63
5. KM-515MAH
Specification Sheet
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 11.7 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1110(5.9) 1010(4.6)
WATER gal./24HR (gal./100 lbs.) 83(18.5) 231(43.9)
ICE PRODUCTION PER CYCLE 10.2 lbs. (4.6 kg) 480pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R404A, 1 lb. 7.3 oz. (660g)
Performance Data
70/21 527 239
504 229 474 215
80/27 510 231 475 215 444 201
90/32 504 229 450 204 419 190
lbs./day kg./day
100/38 498 226 443 201 390 177
70/21
80/27
90/32
watts 100/38
70/21 231 0.88
188 0.71 168 0.64
80/27 198 0.75 131 0.50 133 0.51
90/32 188 0.71 83 0.32 76 0.29
gal./day m
3
/day
100/38 140 0.53 82 0.31 69 0.26
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 234 16.5
257 18.1 285 20.0
80/27 252 17.7 288 20.2 313 22.0
90/32 257 18.1 313 22.0 340 23.9
PSIG kg/cm
2
G
100/38 261 18.4 319 22.4 364 25.6
70/21 47 3.3 50 3.5 56 3.9
80/27 49 3.5 54 3.8 61 4.3
90/32 50 3.5 58 4.1 64 4.5
PSIG kg/cm
2
G
100/38 52 3.6 59 4.2 70 4.9
9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
2.8 2.1 2.1
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
HARVEST CYCLE TIME
3.9
3.4 3.2
3.5 2.7 2.8
3.4
2.1
2.1
31
26
29
32
26 30 35
1033 1111 1120
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
24
26 28
25 28
APPROXIMATE ELECTRIC
CONSUMPTION
1010
1039 1053
1032 1078 1076
1039
1110
1115
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
ENG.F-011.1.0205
64
6. KM-515MWH
Specification Sheet
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 9.6 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 960(5.14) 920(4.8)
WATER gal./24HR (gal./100 lbs.) 103(23.0) 180(39.0)
WATER COOLED CONDENSER 473(106) 263(57)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 10. lbs. (4.5 kg) 480pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R404A, 0 lb. 14.8 oz. (420g)
Performance Data
70/21 462 210
457 207 427 194
80/27 458 208 451 205 407 185
90/32 457 207 446 202 407 185
lbs./day kg./day 100/38 443 201 437 198 371 168
70/21
80/27
90/32
watts 100/38
70/21 444 1.68
482 1.83 727 2.75
80/27 473 1.79 533 2.02 884 3.35
90/32 482 1.83 575 2.18 887 3.36
gal./day m3/day 100/38 622 2.35 648 2.45 1173 4.44
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 266 18.7
267 18.8 270 19.0
80/27 267 18.7 268 18.8 272 19.1
90/32 267 18.8 269 18.9 273 19.2
PSIG kg/cm2G 100/38 268 18.8 270 19.0 276 19.4
70/21 48 3.4 50 3.5 55 3.9
80/27 49 3.5 52 3.7 59 4.1
90/32 50 3.5 54 3.8 60 4.2
PSIG kg/cm2G 100/38 52 3.6 55 3.9 66 4.6
8,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 45 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT
TEMP. (ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
920 932 932
929 947 938
932 960 955
926 959 950
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
28 29 31
28 30 32
29 31 33
TOTAL HEAT OF REJECTION FROM CONDENSER
HARVEST CYCLE TIME
4.6 4.0 3.9
4.2 3.4 3.5
4.0 2.8 2.8
3.5 2.8 2.8
HEAD PRESSURE
SUCTION PRESSURE
29 31 35
ENG.F-011.1.0205
65
7. KM-515MRH with URC-5F
Specification Sheet
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 11.3A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1090(5.8) 1000(4.9)
WATER gal./24HR (gal./100 lbs.) 94(20.8) 198(40.4)
ICE PRODUCTION PER CYCLE 10.3 lbs. (4.7 kg) 480pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
TOTAL REFRIGERANT CHARGE R404A, 4 lbs. 4.8 oz. (1950g)
REFRIGERANT CHARGE BY UNIT Icemaker 2 lbs. 6.8 oz. Cond. Unit 1 lbs. 14 oz.
Performance Data
70/21 491 223
480 218 443 201
80/27 482 219 465 211 417 189
90/32 480 218 452 205 408 185
lbs./day kg./day 100/38 465 211 442 200 368 167
70/21
80/27
90/32
watts 100/38
70/21 198 0.75
168 0.64 153 0.58
80/27 175 0.66 128 0.48 128 0.49
90/32 168 0.64 94 0.36 88 0.33
gal./day m3/day 100/38 133 0.50 93 0.35 82 0.31
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 216 15.2
234 16.4 252 17.7
80/27 230 16.1 257 18.1 272 19.1
90/32 234 16.4 277 19.5 294 20.6
PSIG kg/cm2G 100/38 235 16.6 281 19.8 309 21.7
70/21 47 3.3 50 3.5 52 3.6
80/27 49 3.5 54 3.8 54 3.8
90/32 50 3.5 57 4.0 58 4.1
PSIG kg/cm2G 100/38 50 3.5 57 4.0 59 4.1
8,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
1,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 43 CU. IN (URC-5F)
TOTAL HEAT OF REJECTION FROM COMPRESSOR
3.6 2.7 2.7
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
HARVEST CYCLE TIME
5.0 4.3 4.1
4.5 3.4 3.6
4.3 2.7 2.7
32
27 31 34
28 31 36
1031 1097 1150
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
26 27 30
27 29
1020 1061 1091
1026 1090 1121
APPROXIMATE ELECTRIC
CONSUMPTION
1000
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1026 1058
ENG.F-011.1.0205
66
8. KM-600MAH
Specification Sheet
AC SUPPLY VOLTAGE 115-120/60/1
AMPERAGE 12.0 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1190(5.7) 1040(4.2)
WATER gal./24HR (gal./100 lbs.) 99(19.7) 259(43.7)
ICE PRODUCTION PER CYCLE 14.3 lbs. (6.5 kg) 720 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R-404A, 1 lb. 11 oz. (765g)
Performance Data
70/21 592 269
566 257 516 234
80/27 572 260 532 241 474 215
90/32 566 257 503 228 447 203
lbs./day kg./day 100/38 551 250 490 222 396 180
70/21
80/27
90/32
watts 100/38
70/21 259 0.98
212 0.80 191 0.72
80/27 223 0.84 150 0.57 154 0.58
90/32 212 0.80 99 0.38 92 0.35
gal./day m3/day 100/38 160 0.61 97 0.37 85 0.32
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 238 16.7
259 18.2 290 20.4
80/27 254 17.9 287 20.2 319 22.4
90/32 259 18.2 310 21.8 342 24.1
PSIG kg/cm2G 100/38 266 18.7 318 22.3 372 26.2
70/21 55 3.9 56 4.0 58 4.1
80/27 56 3.9 58 4.0 60 4.2
90/32 56 4.0 59 4.1 61 4.3
PSIG kg/cm2G 100/38 57 4.0 59 4.2 62 4.4
2.9 2.0 2.0
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
HARVEST CYCLE TIME
4.2 3.6 3.4
3.7 2.7 2.9
3.6 2.0 2.0
42
35 40 44
36 41 48
1073 1191 1200
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
33 35 38
34 38
APPROXIMATE ELECTRIC
CONSUMPTION
1040 1084 1102
1073 1142 1137
1084 1190 1195
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
ENG.F-011.1.0205
67
9. KM-650MAH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 7.2 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1290(5.51) 1180(4.30)
WATER gal./24HR (gal./100 lbs.) 101(18.0) 232(35.1)
ICE PRODUCTION PER CYCLE 14.6 lbs. (6.6 kg) 720 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R-404A, 1 lb. 8 oz. (680g)
Performance Data
70/21 661 300
632 287 591 268
80/27 639 290 594 269 553 251
90/32 632 287 562 255 520 236
lbs./day kg./day 100/38 624 283 552 250 482 219
70/21
80/27
90/32
watts 100/38
70/21 232 0.88
194 0.73 172 0.65
80/27 203 0.77 143 0.54 139 0.53
90/32 194 0.73 101 0.38 89 0.34
gal./day m3/day 100/38 149 0.56 98 0.37 78 0.30
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 232 16.3
252 17.8 280 19.7
80/27 248 17.4 280 19.7 307 21.6
90/32 252 17.8 302 21.3 331 23.2
PSIG kg/cm2G 100/38 258 18.1 309 21.7 357 25.1
70/21 50 3.5 52 3.7 55 3.9
80/27 52 3.6 56 3.9 58 4.1
90/32 52 3.7 58 4.1 61 4.3
PSIG kg/cm2G 100/38 53 3.7 59 4.1 64 4.5
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1180 1212 1250
1205 1255 1289
1212 1290 1326
1218 1299 1360
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
29 31 34
30 34 36
31 36 38
32 36 41
HARVEST CYCLE TIME
3.5 3.1 2.9
3.2 2.5 2.6
3.1 2.0 2.0
2.6 2.0 2.0
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 11,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
68
10. KM-650MWH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 5.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1130(4.16) 1120(4.03)
WATER gal./24HR (gal./100 lbs.) 145(22.3) 286(42.7)
WATER COOLED CONDENSER 982(151) 503(75)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 14.3 lbs. (6.5 kg) 720 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R-404A, 1 lb. 5.2 oz. (600g)
Performance Data
70/21 669 303
663 301 626 284
80/27 665 302 656 298 602 273
90/32 663 301 650 295 602 273
lbs./day kg./day 100/38 646 293 639 290 557 253
70/21
80/27
90/32
watts 100/38
70/21 789 2.99
888 3.36 1449 5.49
80/27 864 3.27 1018 3.85 1816 6.88
90/32 888 3.36 1126 4.26 1836 6.95
gal./day m3/day 100/38 1218 4.61 1293 4.89 2489 9.42
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 239 16.8
240 16.8 248 17.5
80/27 239 16.8 240 16.9 254 17.8
90/32 240 16.8 241 16.9 252 17.8
PSIG kg/cm2G 100/38 244 17.2 244 17.1 263 18.5
70/21 50 3.5 50 3.5 53 3.7
80/27 50 3.5 51 3.6 54 3.8
90/32 50 3.5 51 3.6 54 3.8
PSIG kg/cm2G 100/38 51 3.6 52 3.6 57 4.0
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 99.6 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ELECTRIC
CONSUMPTION
1120 1123
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1139
1122 1127 1150
1123 1130 1151
1130 1135 1170
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
28 28 30
28 29 31
28 30 32
29 30 34
HARVEST CYCLE TIME
4.1 3.6 3.3
3.7 3.0 2.9
3.6 2.5 2.3
3.1 2.4 2.1
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 9,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
69
11. KM-650MRH with URC-5F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 7.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1320(5.6) 1220(4.6)
WATER gal./24HR (gal./100 lbs.) 93(16.5) 267(42.2)
ICE PRODUCTION PER CYCLE 14.4 lbs. (6.5 kg) 720 pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
TOTAL REFRIGERANT CHARGE
R-404A, 5 lbs. 14.9 oz. (2690 g)
REFRIGERANT CHARGE BY UNIT Icemaker 4 lbs. 0.9 oz. Cond. Unit 1 lb. 14 oz.
Performance Data
70/21 632 287
612 278 574 260
80/27 617 280 586 266 541 246
90/32 612 278 564 256 521 236
lbs./day kg./day 100/38 601 272 554 251 482 219
70/21
80/27
90/32
watts 100/38
70/21 267 1.01
216 0.82 195 0.74
80/27 228 0.86 149 0.56 155 0.59
90/32 216 0.82 93 0.35 88 0.33
gal./day m3/day 100/38 160 0.61 92 0.35 82 0.31
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 211 14.9
231 16.3 253 17.8
80/27 227 15.9 258 18.1 277 19.5
90/32 231 16.3 280 19.7 301 21.1
PSIG kg/cm2G 100/38 234 16.5 285 20.0 320 22.5
70/21 51 3.6 53 3.7 56 3.9
80/27 52 3.7 55 3.8 58 4.1
90/32 53 3.7 56 3.9 59 4.2
PSIG kg/cm2G 100/38 54 3.8 57 4.0 62 4.4
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1220
1249 1278
1242 1288 1311
1249
1320
1346
1251 1326 1370
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
30
32 34
31 33
2.1
36
32
35
37
32 35 39
9600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
HARVEST CYCLE TIME
4.1
3.5 3.3
3.7 2.7 2.9
3.5
2.1
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 40 CU. IN (URC-5F)
3.0 2.1 2.1
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
ENG.F-011.0.1196
70
12. KM-901MAH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 11.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1740(5.1) 1670(4.4)
WATER gal./24HR (gal./100 lbs.) 130(16.0) 292(31.7)
ICE PRODUCTION PER CYCLE 14.2 lbs. (6.5 kg) 720pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R404A, 2 lb. 15 oz. (1323g)
Performance Data
70/21 920 417
889 403 841 381
80/27 896 406 847 384 797 361
90/32 889 403 813 369 762 346
lbs./day kg./day 100/38 877 398 801 363 716 325
70/21
80/27
90/32
watts 100/38
70/21 292 1.10
244 0.92 215 0.81
80/27 256 0.97 182 0.69 172 0.65
90/32 244 0.92 130 0.49 111 0.42
gal./day m3/day 100/38 188 0.71 126 0.48 94 0.36
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 217 15.3
235 16.6 261 18.4
80/27 231 16.2 260 18.3 286 20.1
90/32 235 16.6 280 19.7 307 21.6
PSIG kg/cm2G 100/38 241 16.9 286 20.1 331 23.3
70/21 36 2.5 38 2.7 42 2.9
80/27 37 2.6 40 2.8 45 3.2
90/32 38 2.7 42 3.0 47 3.3
PSIG kg/cm2G 100/38 39 2.8 43 3.0 51 3.6
15,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1670 1691 1732
1686 1718 1767
1691 1740 1787
1703 1751 1830
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
19 20 21
20 21 23
20 23 24
20 23 25
HARVEST CYCLE TIME
4.0 3.5 3.2
3.6 2.9 2.8
3.5 2.4 2.2
3.0 2.4 2.1
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
ENG.F-011.1.0205
71
13. KM-901MWH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 8.7A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1610(4.5) 1610(4.2)
WATER gal./24HR (gal./100 lbs.) 180(20.8) 239(25.8)
WATER COOLED CONDENSER 1106(128) 610(66)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 13.4 lbs. (6.1 kg) 720pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
REFRIGERANT CHARGE R404A, 1 lb. 10.5 oz. (750g)
Performance Data
70/21 928 421
909 412 857 389
80/27 914 414 885 401 817 371
90/32 909 412 864 392 802 364
lbs./day kg./day 100/38 890 404 849 385 745 338
70/21
80/27
90/32
watts 100/38
70/21 849 3.21
977 3.70 1453 5.50
80/27 947 3.58 1145 4.34 1788 6.77
90/32 977 3.70 1286 4.87 1868 7.07
gal./day m3/day 100/38 1298 4.91 1422 5.38 2403 9.09
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 239 16.8
240 16.9 248 17.5
80/27 240 16.9 242 17.0 254 17.8
90/32 240 16.9 243 17.1 253 17.8
PSIG kg/cm2G 100/38 244 17.2 245 17.3 263 18.5
70/21 34 2.4 35 2.5 37 2.6
80/27 35 2.4 36 2.5 38 2.7
90/32 35 2.5 37 2.6 39 2.7
PSIG kg/cm2G 100/38 35 2.5 37 2.6 41 2.9
10,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 94 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1610 1610 1626
1610 1610 1634
1610 1610 1631
1618 1615 1650
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
19 19 20
19 20 21
19 21 22
20 21 23
HARVEST CYCLE TIME
4.1 3.8 3.6
3.9 3.4 3.3
3.8 3.1 3.0
3.5 3.1 2.8
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
ENG.F-011.1.0205
72
14. KM-901MRH with URC-9F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral) or 208-230/60/1
AMPERAGE 11.6A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1770(5.4) 70/21(0.0)
WATER gal./24HR (gal./100 lbs.) 152(19.3) 10(0.0)
ICE PRODUCTION PER CYCLE 13.5 lbs. (6.1 kg) 720pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
TOTAL REFRIGERANT CHARGE R404A, 9 lbs. 4 oz. (4200g)
REFRIGERANT CHARGE BY UNIT Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.
Performance Data
70/21 889 403
859 389 803 364
80/27 866 393 818 371 755 343
90/32 859 389 785 356 724 328
lbs./day kg./day 100/38 843 382 771 350 668 303
70/21
80/27
90/32
watts 100/38
70/21 246 0.93
219 0.83 194 0.74
80/27 225 0.85 182 0.69 165 0.63
90/32 219 0.83 152 0.57 131 0.50
gal./day m3/day 100/38 182 0.69 147 0.56 112 0.42
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 208 14.6
229 16.1 252 17.7
80/27 224 15.7 256 18.0 277 19.5
90/32 229 16.1 279 19.6 301 21.2
PSIG kg/cm2G 100/38 232 16.3 284 20.0 322 22.6
70/21 35 2.5 37 2.6 41 2.9
80/27 37 2.6 40 2.8 45 3.1
90/32 37 2.6 43 3.0 47 3.3
PSIG kg/cm2G 100/38 38 2.7 44 3.1 51 3.6
14,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 121 CU. IN (URC-9F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1590 1643 1664
1630 1712 1705
1643 1770 1775
1630 1771 1780
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
18 20 21
19 21 23
20 22 24
20 23 26
HARVEST CYCLE TIME
4.3 3.9 3.6
4.0 3.4 3.2
3.9 2.9 2.7
TOTAL HEAT OF REJECTION FROM COMPRESSOR
3.4 2.8 2.4
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
ENG.F-011.1.0205
73
15. KM-901MRH3 with URC-9F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 7.0A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1830(5.4) 1670(4.5)
WATER gal./24HR (gal./100 lbs.) 147(18.0) 254(28.2)
ICE PRODUCTION PER CYCLE 14.2 lbs. (6.4 kg) 720pcs.
BIN CONTROL SYSTEM Thermostat or Mechanical Bin Control
TOTAL REFRIGERANT CHARGE R404A, 9 lbs. 4 oz. (4200g)
REFRIGERANT CHARGE BY UNIT Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.
Performance Data
70/21 899 408
874 397 817 371
80/27 880 399 842 382 772 350
90/32 874 397 815 370 749 340
lbs./day kg./day 100/38 855 388 800 363 689 313
70/21
80/27
90/32
watts 100/38
70/21 254 0.96
222 0.84 203 0.77
80/27 230 0.87 181 0.69 174 0.66
90/32 222 0.84 147 0.56 134 0.51
gal./day m3/day 100/38 185 0.70 144 0.54 123 0.46
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 206 14.5
225 15.8 248 17.5
80/27 220 15.5 249 17.5 272 19.1
90/32 225 15.8 270 19.0 293 20.6
PSIG kg/cm2G 100/38 229 16.1 275 19.4 315 22.1
70/21 36 2.5 38 2.7 41 2.9
80/27 37 2.6 40 2.8 44 3.1
90/32 38 2.7 42 3.0 46 3.2
PSIG kg/cm2G 100/38 39 2.7 43 3.0 49 3.4
14,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 121 CU. IN (URC-9F)
TOTAL HEAT OF REJECTION FROM COMPRESSOR
3.4 2.7 2.4
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
HARVEST CYCLE TIME
4.4 3.9 3.6
4.0 3.3 3.2
3.9 2.8 2.6
23
20 22 24
20 23 26
1716 1837 1890
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
19 20 21
20 21
APPROXIMATE ELECTRIC
CONSUMPTION
1670 1717 1755
1706 1779 1803
1717 1830 1861
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
ENG.F-011.1.0205
74
16. KM-1100MAH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 0A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY
20 A
MAXIMUM FUSE SIZE
20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2110(5.02) 1970(4.00)
WATER gal./24HR (gal./100 lbs.) 175(17.3) 391(33.0)
ICE PRODUCTION PER CYCLE 20.1 lbs. (9.1 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 3 lb. 15.5 oz. (1800g)
Performance Data
70/21 1184 537
1133 514 1058 480
80/27 1145 519 1066 484 988 448
90/32 1133 514 1010 458 931 422
lbs./day kg./day
100/38 1116 506 992 450 859 390
70/21
80/27
90/32
watts 100/38
70/21 391 1.48
327 1.24 290 1.10
80/27 342 1.30 244 0.92 235 0.89
90/32 327 1.24 175 0.66 153 0.58
gal./day m
3
/day
100/38 253 0.96 170 0.64 132 0.50
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 255 17.9
274 19.2 300 21.1
80/27 269 18.9 298 21.0 325 22.9
90/32 274 19.2 319 22.4 346 24.3
PSIG kg/cm
2
G
100/38 279 19.6 325 22.9 371 26.1
70/21 50 3.5 52 3.6 55 3.8
80/27 51 3.6 54 3.8 57 4.0
90/32 52 3.6 56 3.9 59 4.2
PSIG kg/cm
2
G
100/38 53 3.7 57 4.0 62 4.4
0 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]TOTAL HEAT OF REJECTION FROM CONDENSER
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT
TEMP. (ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
1970 2011 2048
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
21 22 25
HEAD PRESSURE
SUCTION PRESSURE
3.4 3.0 2.9
3.1 2.4 2.6
3.0 2.0 2.0
2.6 2.0 2.0
HARVEST CYCLE TIME
22 24 27
22 25 28
23 26 30
2170
2001 2065 2091
2011 2110 2141
2012 2117
ENG.F-011.1.0205
75
17. KM-1100MWH
Specification Shee
t
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 9.6A (5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY
20 A
MAXIMUM FUSE SIZE
20 A
ELECTRIC & WATER CONSUMPTION
90/70°F
70/50°F
ELECTRIC W (kWH/100 lbs.)
1710(3.81)
1620(3.50)
WATER gal./24HR (gal./100 lbs.)
182(16.9)
303(27.3)
CONDENSER WATER
gal./24HR (gal./100 lbs.)
1362(126.6)
678(61.0)
ICE PRODUCTION PER CYCLE 19.7 lbs. (8.9 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R404A, 1 lb. 10.5 oz. (750g)
Performance Dat
a
70/21 1111 504 1101 499 1038 471
80/27 1103 500 1087 493 997 452
90/32 1101 499 1076 488 996 452
lbs./day kg./day
100/38 1072 486 1057 480 923 419
70/21
80/27
90/32
watts 100/38
70/21 981 3.71
1146 4.34 1556 5.89
80/27 1107 4.19 1363 5.16 1876 7.10
90/32 1146 4.34 1544 5.84 2022 7.66
gal./day m
3
/day
100/38 1473 5.58 1656 6.27 2462 9.32
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 234 16.5
236 16.6 246 17.3
80/27 236 16.6 239 16.8 253 17.8
90/32 236 16.6 241 16.9 254 17.9
PSIG kg/cm
2
G
100/38 241 16.9 244 17.2 266 18.7
70/21 51 3.6 51 3.6 54 3.8
80/27 51 3.6 51 3.6 55 3.9
90/32 51 3.6 51 3.6 55 3.8
PSIG kg/cm
2
G
100/38 52 3.7 52 3.6 58 4.1
TOTAL HEAT OF REJECTION FROM CONDENSER 17900 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 96.14583333 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER Less than 10 PSIG
SUCTION PRESSURE
1646 1710
23 23
3.0
APPROXIMATE ELECTRIC
CONSUMPTION
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
HARVEST CYCLE TIME
HEAD PRESSURE
WATER TEMP. (ºF/ºC)
50/10 70/21
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC) 90/32
1620 1646 1671
1640 1681 1699
1731
1647 1715 1750
23 23 24
25
23 24 25
23 24 26
2.7 2.7
2.8 2.4 2.5
2.7 2.1 2.1
2.5 2.1 2.1
ENG.F-011.1.0205
76
18. KM-1100MRH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1
AMPERAGE 12.5A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY
20 A
MAXIMUM FUSE SIZE
20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1990(4.66) 1830(3.71)
WATER gal./24HR (gal./100 lbs.) 168(16.4) 355(30.0)
ICE PRODUCTION PER CYCLE 20.1 lbs. (9.1 kg) 960pcs.
BIN CONTROL SYSTEM Thermostat
TOTAL REFRIGERANT CHARGE R404A, 9 lb. 11.2 oz. (4400g)
Icemaker, 5 lb. 4.7 oz. (2400g), Condenser, 4 lb. 6.5 oz. (2000g)
Performance Sheet
50/10 70/21 90/32
70/21 1183 537
1137 516 1062 482
80/27 1148 521 1077 489 995 451
90/32 1137 516 1027 466 946 429
lbs./day kg./day
100/38 1118 507 1008 457 872 396
70/21
80/27
90/32
watts 100/38
70/21 355 1.34
300 1.14 269 1.02
80/27 313 1.19 228 0.86 221 0.84
90/32 300 1.14 168 0.64 150 0.57
gal./day m
3
/day
100/38 236 0.89 164 0.62 133 0.50
FREEZING CYCLE TIME
70/21
80/27
90/32
min. 100/38
HARVEST CYCLE TIME
70/21
80/27
90/32
min. 100/38
HEAD PRESSURE
70/21 208 14.6
224 15.8 244 17.2
80/27 221 15.5 246 17.3 264 18.6
90/32 224 15.8 264 18.6 283 19.9
PSIG kg/cm
2
G
100/38 227 16.0 269 18.9 301 21.2
SUCTION PRESSURE
70/21 49 3.4
51 3.6 55 3.9
80/27 51 3.6 54 3.8 58 4.1
90/32 51 3.6 56 3.9 60 4.2
PSIG kg/cm
2
G
100/38 52 3.7 57 4.0 64 4.5
TOTAL HEAT OF REJECTION FROM CONDENSER 19,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME 133 IN3 (URC-14F)
2.9
2.6
2.0
2.0
3.4
3.1
3.0
2.6
3.0
2.4
2.0
2.0
22
22
23
24 26
27
30
25
26
2006
2020
21
22 24
WATER TEMP. (ºF/ºC)
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT
TEMP. (ºF/ºC)
APPROXIMATE ELECTRIC
CONSUMPTION
1870
1877
1866
1830
1877
1939
1990
1994
1904
1945
ENG.F-011.1.0205
77
19. KM-1340MAH
Specification Shee
t
AC SUPPLY VOLTAGE 208-230/60/1 (3 Wire with neutral)
AMPERAGE 13.2 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2280(4.7) 2100(3.8)
WATER gal./24HR (gal./100 lbs.) 214(18.3) 413(31.2)
ICE PRODUCTION PER CYCLE 28.1 lbs. (12.7 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R-404A, 4 lb. 11.4 oz. (2140g)
Performance Dat
a
70/21 1325 601 1278 580 1200 544
80/27 1289 585 1218 552 1130 513
90/32 1278 580 1167 529 1081 491
lbs./day kg./day 100/38 1257 570 1147 520 1003 455
70/21
80/27
90/32
watts 100/38
70/21 413 1.56
355 1.34 306 1.16
80/27 369 1.40 278 1.05 246 0.93
90/32 355 1.34 214 0.81 174 0.66
gal./day m3/day 100/38 280 1.06 204 0.77 137 0.52
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 251 17.6
272 19.1 293 20.6
80/27 267 18.8 299 21.0 316 22.2
90/32 272 19.1 322 22.6 341 24.0
PSIG kg/cm2G 100/38 274 19.2 327 23.0 359 25.2
70/21 45 3.2 48 3.4 50 3.5
80/27 48 3.4 52 3.7 53 3.7
90/32 48 3.4 56 3.9 57 4.0
PSIG kg/cm2G 100/38 48 3.4 56 3.9 58 4.1
3.4 2.6 2.0
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 22,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
HARVEST CYCLE TIME
4.9 4.3 3.8
4.4 3.4 3.2
4.3 2.7 2.3
34
29 33 36
29 33 38
2152 2289 2350
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
27 29 31
28 31
APPROXIMATE ELECTRIC
CONSUMPTION
2100 2153 2197
2140 2222 2251
2153 2280 2316
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
ENG.F-011.1.0205
78
20. KM-1340MWH
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 Wire with neutral)
AMPERAGE 10.7A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2140(3.90) 2040(3.68)
WATER gal./24HR (gal./100 lbs.) 259(19.7) 417(31.4)
WATER COOLED CONDENSER 1748(133) 880(66)
gal./24HR (gal./100 lbs.)
ICE PRODUCTION PER CYCLE 28.1 lbs. (12.7 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R-404A, 2 lb. 1.5 oz. (950g)
Performance Data
70/21 1329 603
1325 601 1247 566
80/27 1326 602 1320 599 1201 545
90/32 1325 601 1316 597 1213 550
lbs./day kg./day 100/38 1285 583 1292 586 1118 507
70/21
80/27
90/32
watts 100/38
70/21 1297 4.91
1505 5.70 1951 7.38
80/27 1456 5.51 1779 6.73 2314 8.76
90/32 1505 5.70 2007 7.60 2514 9.52
gal./day m3/day 100/38 1887 7.14 2126 8.05 2979 11.28
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 234 16.5
237 16.6 251 17.6
80/27 236 16.6 240 16.9 260 18.3
90/32 237 16.6 243 17.1 261 18.4
PSIG kg/cm2G 100/38 243 17.1 247 17.4 278 19.5
70/21 42 3.0 43 3.0 45 3.1
80/27 43 3.0 44 3.1 46 3.3
90/32 43 3.0 45 3.1 47 3.3
PSIG kg/cm2G 100/38 44 3.1 45 3.2 49 3.5
TOTAL HEAT OF REJECTION FROM COMPRESSOR
WATER FLOW FOR CONDENSER
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2040 2069 2079
2062 2108 2100
2069 2140 2140
2061 2140 2140
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
26 27 29
27 28 30
27 29 31
27 29 33
HARVEST CYCLE TIME
4.9 4.4 4.0
4.5 3.7 3.5
4.4 3.1 2.8
2,700 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
116 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
3.7 3.0 2.5
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 18,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
79
21. KM-1340MRH with URC-14F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral)
AMPERAGE 13.4 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2360(4.5) 2130(3.7)
WATER gal./24HR (gal./100 lbs.) 229(18.3) 451(32.2)
ICE PRODUCTION PER CYCLE 28.7 lbs. (13.0 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
TOTAL REFRIGERANT CHARGE R-404A, 9 lb. 14.7 oz. (4,500g)
REFRIGERANT CHARGE by UNIT Icemaker 5 lbs. 8.2 oz. Cond. Unit 4 lb. 6.5 oz.
Performance Data
70/21 1401 635
1357 615 1274 578
80/27 1367 620 1299 589 1204 546
90/32 1357 615 1251 567 1159 526
lbs./day kg./day 100/38 1333 604 1229 558 1075 488
70/21
80/27
90/32
watts 100/38
70/21 451 1.71
386 1.46 344 1.30
80/27 401 1.52 300 1.14 284 1.08
90/32 386 1.46 229 0.87 201 0.76
gal./day m3/day 100/38 308 1.16 222 0.84 175 0.66
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 208 14.6
226 15.9 247 17.4
80/27 221 15.6 250 17.6 269 18.9
90/32 226 15.9 270 19.0 290 20.4
PSIG kg/cm2G 100/38 229 16.1 275 19.3 309 21.7
70/21 44 3.1 47 3.3 49 3.4
80/27 46 3.2 50 3.5 51 3.6
90/32 47 3.3 53 3.7 54 3.8
PSIG kg/cm2G 100/38 47 3.3 53 3.7 55 3.9
CONDENSER VOLUME 134 CU. IN (URC-14F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2130 2197 2231
2181 2286 2287
2197 2360 2376
2184 2364 2390
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
25 27 29
26 29 31
27 31 33
27 31 35
HARVEST CYCLE TIME
5.5 4.8 4.3
5.0 3.9 3.6
4.8 3.2 2.8
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
4.0 3.1 2.4
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 20,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
80
22. KM-1340MRH3 with URC-14F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 9 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2350(4.75) 2170(3.82)
WATER gal./24HR (gal./100 lbs.) 255(21.5) 491(36.0)
ICE PRODUCTION PER CYCLE 28.7 lbs. (13.0 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R-404A, 9 lb. 14.7 oz. (4,500g)
(Icemaker 5 lbs. 8.2 oz. Cond. Unit 4 lb. 6.5 oz.)
Performance Data
70/21 1364 619
1312 595 1216 551
80/27 1324 601 1243 564 1133 514
90/32 1312 595 1185 538 1079 490
lbs./day kg./day
100/38 1284 583 1160 526 982 445
70/21
80/27
90/32
watts 100/38
70/21 491 1.86
422 1.60 371 1.41
80/27 438 1.66 331 1.25 305 1.15
90/32 422 1.60 255 0.96 217 0.82
gal./day m
3
/day
100/38 336 1.27 246 0.93 183 0.69
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38 3.8 #VALUE!
70/21 208 14.6
226 15.9 252 17.7
80/27 222 15.6 248 17.5 276 19.4
90/32 226 15.9 267 18.8 295 20.7
PSIG kg/cm
2
G
100/38 232 16.3 274 19.2 320 22.5
70/21 45 3.2 46 3.2 51 3.6
80/27 46 3.2 47 3.3 54 3.8
90/32 46 3.2 48 3.4 54 3.8
PSIG kg/cm
2
G
100/38 48 3.4 50 3.5 60 4.2
CONDENSER VOLUME 134 CU. IN (URC-14F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT
TEMP. (ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2170 2223 2275
2210 2292 2333
2223 2350 2397
2226 2361 2440
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
24 26 28
25 28 31
26 30 33
26 31 35
HARVEST CYCLE TIME
5.1 4.5 4.1
4.7 3.7 3.5
4.5 3.0 2.7
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
3.0 2.4
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 21,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
81
23. KM-1601MRH with URC-21F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral)
AMPERAGE 11.6 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2670(4.5) 2450(3.9)
WATER gal./24HR (gal./100 lbs.) 263(18.5) 483(32.0)
ICE PRODUCTION PER CYCLE 29.8 lbs. (13.5 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
TOTAL REFRIGERANT CHARGE R-404A, 24 lb. 4.0 oz. (11,000g)
REFRIGERANT CHARGE by UNIT Icemaker 14 lbs. 8.8 oz. Cond. Unit 9 lb. 11.2 oz.
Performance Data
70/21 1508 684
1483 673 1399 634
80/27 1489 675 1450 658 1338 607
90/32 1483 673 1422 645 1320 599
lbs./day kg./day 100/38 1449 657 1398 634 1227 557
70/21
80/27
90/32
watts 100/38
70/21 483 1.83
418 1.58 363 1.37
80/27 434 1.64 334 1.26 296 1.12
90/32 418 1.58 263 1.00 217 0.82
gal./day m3/day 100/38 335 1.27 252 0.95 174 0.66
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 200 14.1
215 15.1 231 16.3
80/27 211 14.9 234 16.5 249 17.5
90/32 215 15.1 251 17.6 266 18.7
PSIG kg/cm2G 100/38 217 15.3 254 17.9 281 19.8
70/21 35 2.5 37 2.6 39 2.7
80/27 36 2.6 39 2.7 41 2.9
90/32 37 2.6 41 2.9 43 3.0
PSIG kg/cm2G 100/38 37 2.6 41 2.9 45 3.2
CONDENSER VOLUME 441 CU. IN (URC-21F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2450 2514 2532
2499 2599 2577
2514 2670 2665
2494 2669 2660
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
23 24 26
24 25 27
24 27 28
24 27 30
HARVEST CYCLE TIME
5.3 4.6 4.1
4.8 3.6 3.4
4.6 2.8 2.5
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
3.7 2.8 2.2
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 23,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
82
24. KM-1601MRH with URC-22F
Specification Shee
t
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral)
AMPERAGE 11.6 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2740(4.64) 2590(4.17)
WATER gal./24HR (gal./100 lbs.) 264(18.6) 521(34.9)
ICE PRODUCTION PER CYCLE 27.9 lbs. (12.7 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE (w/URC-22F) R-404A, 22 lb. 4.3 oz. (10,100g)
(Icemaker 14 lbs. 8.8 oz. Cond. Unit 9 lb. 11.2 oz.)
Performance Dat
a
70/21 1493 677 1471 667 1410 640
80/27 1476 670 1441 654 1364 619
90/32 1471 667 1417 643 1346 610
lbs./day kg./da
y
100/38 1449 657 1400 635 1280 581
70/21
80/27
90/32
watts 100/38
70/21 521 1.97
446 1.69 396 1.50
80/27 464 1.75 346 1.31 327 1.24
90/32 446 1.69 264 1.00 230 0.87
gal./day m
3
/day
100/38 355 1.34 256 0.97 200 0.76
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 205 14.4
218 15.3 233 16.4
80/27 215 15.1 236 16.6 249 17.5
90/32 218 15.3 250 17.6 265 18.6
PSIG kg/cm
2
G
100/38 220 15.5 254 17.8 279 19.6
70/21 38 2.7 40 2.8 42 3.0
80/27 39 2.8 42 2.9 44 3.1
90/32 40 2.8 43 3.1 46 3.2
PSIG kg/cm
2
G
100/38 40 2.8 44 3.1 48 3.4
CONDENSER VOLUME 214 CU. IN. (URC-22F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2590 2634 2687
2623 2692 2741
2634 2740 2792
2642 2752 2840
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
22 24 25
23 25 27
24 26 28
24 27 30
HARVEST CYCLE TIME
5.4 4.7 4.2
4.8 3.8 3.5
4.7 3.0 2.6
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
3.8 2.9 2.2
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 27,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
83
25. KM-1601MRH3 with URC-21F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 8.4 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2640(4.6) 2410(3.9)
WATER gal./24HR (gal./100 lbs.) 267(19.2) 491(33.4)
ICE PRODUCTION PER CYCLE 28.0 lbs. (12.7 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
TOTAL REFRIGERANT CHARGE R-404A, 24 lb. 4.0 oz. (11,000g)
REFRIGERANT CHARGE by UNIT Icemaker 14 lbs. 8.8 oz. Cond. Unit 9 lb. 11.2 oz.
Performance Data
70/21 1471 667
1448 657 1354 614
80/27 1453 659 1417 643 1290 585
90/32 1448 657 1392 631 1277 579
lbs./day kg./day 100/38 1408 639 1365 619 1171 531
70/21
80/27
90/32
watts 100/38
70/21 491 1.86
426 1.61 368 1.39
80/27 441 1.67 339 1.28 299 1.13
90/32 426 1.61 267 1.01 218 0.83
gal./day m3/day 100/38 340 1.29 256 0.97 173 0.66
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 203 14.3
218 15.3 242 17.0
80/27 214 15.1 237 16.7 263 18.5
90/32 218 15.3 253 17.8 279 19.6
PSIG kg/cm2G 100/38 224 15.7 259 18.2 303 21.3
70/21 38 2.7 40 2.8 42 2.9
80/27 40 2.8 43 3.0 44 3.1
90/32 40 2.8 45 3.2 47 3.3
PSIG kg/cm2G 100/38 40 2.8 45 3.2 48 3.4
CONDENSER VOLUME 441 CU. IN (URC-21F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2410 2477 2503
2461 2566 2555
2477 2640 2645
2460 2641 2650
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
23 24 26
23 25 27
24 27 29
24 27 31
HARVEST CYCLE TIME
5.7 4.9 4.4
5.1 3.9 3.6
4.9 3.1 2.7
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
4.0 3.0 2.3
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 24,900 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
84
26. KM-1601MRH3 with URC-22F
Specification Sheet
AC SUPPLY VOLTAGE 208-230/60/3
AMPERAGE 8.4 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 2640(4.55) 2460(3.97)
WATER gal./24HR (gal./100 lbs.) 267(19.2) 498(33.5)
ICE PRODUCTION PER CYCLE 28.3 lbs. (12.8 kg) 1440 pcs.
BIN CONTROL SYSTEM Thermostat
REFRIGERANT CHARGE R-404A, 22 lb. 4.3 oz. (10,100g)
(Icemaker 14 lbs. 8.8 oz. Cond. Unit 7 lb. 11.5 oz.)
Performance Data
70/21 1486 674
1458 661 1366 620
80/27 1465 664 1422 645 1300 590
90/32 1458 661 1391 631 1280 581
lbs./day kg./day
100/38 1422 645 1365 619 1178 534
70/21
80/27
90/32
watts 100/38
70/21 498 1.88
430 1.63 375 1.42
80/27 446 1.69 341 1.29 307 1.16
90/32 430 1.63 267 1.01 223 0.84
gal./day m
3
/day
100/38 344 1.30 257 0.97 183 0.69
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 210 14.8
233 16.4 249 17.5
80/27 228 16.0 264 18.6 270 19.0
90/32 233 16.4 290 20.4 300 21.1
PSIG kg/cm
2
G
100/38 231 16.2 292 20.6 310 21.8
70/21 37 2.6 39 2.7 41 2.9
80/27 39 2.7 41 2.9 44 3.1
90/32 39 2.7 43 3.1 46 3.2
PSIG kg/cm
2
G
100/38 39 2.8 44 3.1 48 3.4
CONDENSER VOLUME 214 CU. IN. (URC-22F)
APPROXIMATE ICE PRODUCTION
PER 24 HR.
AMBIENT TEMP.
(ºF/ºC)
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
APPROXIMATE ELECTRIC
CONSUMPTION
2460 2513 2553
2500 2582 2605
2513 2640 2671
2510 2647 2700
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
23 25 26
24 26 28
25 27 29
25 28 31
HARVEST CYCLE TIME
4.7 4.2 3.7
4.3 3.5 3.2
4.2 2.9 2.5
TOTAL HEAT OF REJECTION FROM COMPRESSOR 3,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
3.5 2.8 2.2
HEAD PRESSURE
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER 24,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
ENG.F-011.1.0205
85
C. Wiring Diagrams
1. Diagrams Without Harvest Pump Timer Relays
a) KM-320M_H, KM-515M_H, KM-600MAH
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
0
86
b) KM-650MAH (V-1 and earlier), KM-650MWH (V-1 and earlier),
KM-901MAH (B-0 and earlier), KM-901MWH (C-0 and earlier)
*
Control Transformer
Output 10.5V at 115V
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
0
KM-650MAH, MWH: V-1 and Earlier
M-901MAH, MWH Auxiliary Code V-0 (F) and Earlier
KM-901MAH,
MWH Auxiliary
Code V-0 (G)
and Later
87
c) KM-650MRH (V-1 and earlier), KM-901MRH (C-0 and earlier)
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
KM-650MRH Auxiliary Code V-1 and Earlier
KM-901MRH Auxiliary Code V-0 (F) and Earlier
KM-901MRH
Auxiliary Code
V-0 (G) to C-0
88
d) KM-901MWH (D-1 and later), KM-901MRH (C-1 and later)
*
Control Transformer
Output 10.5V at 115V
* High-Pressure Switch
Water-Cooled Model Remote Model
Cut-out 384±
22
PSIG 412±
22
PSIG
Cut-in 284±22 PSIG 327±22 PSIG
0
0
89
e) KM-1340MAH, KM-1340MWH
*
Control Transformer
Output 10.5V at 115V
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
0
90
f) KM-1340MRH
*
Control Transformer
Output 10.5V at 115V
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
Auxiliary Code: A-0 to D-0
91
g) KM-1601MRH
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
92
h) KM-901MRH3, KM-1340MRH3, KM-1601MRH3
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
93
*
Output 10.5V
at 115VAC
2. Diagrams With Harvest Pump Timer Relays
a) KM-340M_H
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
0
94
b) KM-515MAH
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
95
c) KM-650MAH (V-2 to C-2), KM-650MWH (V-2 to C-2),
KM-901MAH (B-1 to C-2)
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
0
96
d) KM-650MAH (D-1 and later), KM-650MWH (D-1 and later),
KM-901MAH (D-1 and later)
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
Cut-out 412±
22
PSIG 384±
22
PSIG
Cut-in 327±22 PSIG 284±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
0
97
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
e) KM-650MRH (V-2 to C-1)
98
f) KM-650MRH (C-2 and later)
* High-Pressure Switch
Cut-out 412±
22
PSIG
Cut-in 327±22 PSIG
0
*
Control Transformer
Output 10.5V at 115V
99
g) KM-1100M_H
* High-Pressure Switch
Water-Cooled Model Air-Cooled and
Remote Model
Cut-out 384±
22
PSIG 412±
22
PSIG
Cut-in 284±22 PSIG 327±22 PSIG
0
0
