Hoshizaki
Hoshizaki America, Inc.
Modular Crescent Cuber
Models
KM-320MAH, MWH
“A Superior Degree
of Reliability”
www.hoshizaki.com
KM-515MAH, MWH, MRH
KM-600MAH
KM-650MAH, MWH(-M), MRH
KM-901MAH, MWH, MRH/3
SERVICE MANUAL
Number: 73196
Issued: 4-29-2013
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: techsupport@hoshizaki.com
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.
2
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.
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(-M)) ........................................................................... 9
3. Remote Models (MRH/3) ....................................................................................... 10
B. Water/Refrigeration Circuit Diagram .............................................................................11
1. Air-Cooled Models (MAH) .......................................................................................11
2. Water-Cooled Models (MWH(-M)) ......................................................................... 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) ...................................................................... 47
3. Pump-Out Timer (S4 dip switch 3 & 4) .................................................................. 47
4. Pump-Out Frequency Control (S4 dip switch 5 & 6) .............................................. 48
3
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 Sheets.................................................................................................... 59
1. KM-320MAH........................................................................................................... 59
2. KM-320MWH ......................................................................................................... 60
3. KM-515MAH .......................................................................................................... 61
4. KM-515MWH ......................................................................................................... 62
5. KM-515MRH .......................................................................................................... 63
6. KM-600MAH .......................................................................................................... 64
7. KM-650MAH ........................................................................................................... 65
8. KM-650MWH ......................................................................................................... 66
9. KM-650MWH-M ..................................................................................................... 67
10. KM-650MRH ........................................................................................................ 68
11. KM-901MAH ......................................................................................................... 69
12. KM-901MWH ....................................................................................................... 70
13. KM-901MRH ........................................................................................................ 71
14. KM-901MRH3 ...................................................................................................... 72
B. Performance Data ....................................................................................................... 73
1. KM-320MAH .......................................................................................................... 73
2. KM-320MWH ..........................................................................................................74
3. KM-515MAH .......................................................................................................... 75
4. KM-515MWH ......................................................................................................... 76
5. KM-515MRH .......................................................................................................... 77
6. KM-600MAH .......................................................................................................... 78
7. KM-650MAH ........................................................................................................... 79
8. KM-650MWH ......................................................................................................... 80
9. KM-650MWH-M ..................................................................................................... 81
10. KM-650MRH ........................................................................................................ 82
11. KM-901MAH ......................................................................................................... 83
12. KM-901MWH ....................................................................................................... 84
13. KM-901MRH ........................................................................................................ 85
14. KM-901MRH3 ...................................................................................................... 86
4
C. Wiring Diagrams ......................................................................................................... 87
1. Diagrams Without Harvest Pump Timer Relays ..................................................... 87
a) KM-320M_H, KM-515M_H, KM-600MAH ........................................................ 87
b) KM-650MAH, KM-650MWH, KM-901MAH, KM-901MWH ............................... 88
c) KM-650MRH, KM-901MRH .............................................................................. 89
d) KM-901MRH3 .................................................................................................. 90
2. Diagrams With Harvest Pump Timer Relays .......................................................... 91
a) KM-515MAH .................................................................................................... 91
b) KM-650MAH, KM-650MWH, KM-901MAH ...................................................... 92
c) KM-650MWH-M ............................................................................................... 93
d) KM-650MRH .................................................................................................... 94
5
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. Failure to meet these code requirements could result in
death, electric shock, serious injury, re, or damage to the appliance.
• 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 appliance 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.
• Before servicing the appliance, move the control switch to the "OFF" position and
turn off the power supply. 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.
6
WARNING, continued
• 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.
• 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 wire 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 appliance on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the appliance 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.
7
I. Construction and Water/Refrigeration Circuit Diagram
A. Construction
1. Air-Cooled Models (MAH)
Thermostatic
Expansion Valve
Spray Tubes
Inlet Water Valve
Thermostatic
Bin Control
Cleaning Valve
Control Switch
Float Switch
Water Pump
Control Box
Water Supply Inlet
Hot Gas Valve
Condenser
Fan Motor
High-Pressure
Switch
Drier
Liquid Line Valve
KM-515MAH
Thermostatic Bin Control
Bracket & Bulb Holder
Compressor
Mechanical Bin Control and Bracket
Model Shown: KM-515MAH
8
2. Water-Cooled Models (MWH(-M))
Spray Tubes
Inlet Water Valve
Thermostatic
Bin Control
Cleaning Valve
Control Switch
Float Switch
Water Pump
Thermostatic
Expansion Valve
Main Transformer
KM-650MWH-M
Water Supply Inlet
Hot Gas Valve
High-Pressure Switch
Water Regulating
Valve
Condenser
Control Box
Liquid Line Valve
KM-320MWH and
KM-515MWH
Drier
Compressor
Thermostatic Bin Control
Bracket & Bulb Holder
Mechanical Bin Control and Bracket
Model Shown: KM-515MWH
9
3. Remote Models (MRH/3)
Spray Tubes
Inlet Water Valve
Cleaning Valve
Control Switch
Thermostatic
Expansion Valves
Water Supply Inlet
Hot Gas Valve
Junction Boxes
Thermostatic
Bin Control
Float Switch
Water Pump
Compressor
Thermostatic Bin Control
Bracket & Bulb Holder
Control Box
Receiver Tank
Drier
Liquid Line Valve
Mechanical Bin Control and Bracket
Model Shown: KM-901MRH
10
B. Water/Refrigeration Circuit Diagram
1. Air-Cooled Models (MAH)
Spray Tubes
Inlet Water Valve
Condenser
Drier
Water Supply
Float Switch
Drain
Water
Tank
Evaporator
Thermistor
Water Pump
Pump Out
Freeze
Fan
Liquid Line Valve
(KM-515MAH)
Heat
Exchanger
Suction Line
Compressor
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion Valve
Check Valve
11
2. Water-Cooled Models (MWH(-M))
Spray Tubes
Inlet Water Valve
Water Regulating Valve
Condenser
Water Supply
Float Switch
Drain
Water
Tank
Evaporator
Thermistor
Water Pump
Pump Out
Freeze
Liquid Line Valve
(KM-320MWH and
KM-515MWH)
Heat
Exchanger
Suction Line
Compressor
Drier
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion Valve
Check Valve
12
3. Remote Models (MRH/3)
Spray Tubes
Inlet Water Valve
Condenser
Fan
Headmaster
(C.P.R.)
Access
Val ve
Water Supply
Cleaning Valve
Float Switch
Drain
Water
Tank
Thermistor
Water Pump
Freeze Pump-Out
Receiver
Evaporator
Liquid Line
Val ve
Heat
Exchanger
Suction Line
Compressor
Drier
High-Pressure
Switch
Strainer
Hot Gas
Val ve
Check Valves
(KM-901MRH)
Discharge Line
Refrigeration Circuit
Water Circuit
Thermostatic Expansion
Val ve
Check Valve
13
II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
1. "E" and "G" Control Board without Harvest Pump Timer Operation
10th cycle
(except KM-515M_H)
(S4 dip switch 5 & 6)
2 sec., then reverses
for 10/20 sec. (S4 dip
• Factory set for every
4. Pump-Out Cycle
• Pump motor stops for
switch 3 & 4)
FS in control
Comp continues
FMR continues
FS opens or
freeze timer
terminates
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
3. Freeze Cycle
2. Harvest Cycle
• Minimum freeze time: 5 min.
• Maximum freeze time: freeze
• Maximum inlet water valve time: 6 min.
• Maximum harvest time: 20 min.
timer setting
(S4 dip switch 9 & 10)
5-min. minimum
freeze timer in
1 to 3-min. harvest
timer in control
Thermistor in
control
control
(S4 dip switch 1 & 2)
FS closed
Comp continues
FS check
Thermistor temperature
FS closed
Comp energized
FS check
FMR continues
FM energized
LLV energized
PM energized
HGV de-energized
WV de-energized
FS open
reaches 48°F (9°C) (3.9 kΩ
or less). Harvest timer starts
(1 to 3 min.).
FMR energized
HGV energized
WV energized
FS open
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.
See next page.
Startup
WV energized
If FS is open, Comp stops and cycle returns to 1-min. ll.
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
Shutdown and Restart
1. 1-Minute
Fill Cycle
"E" and "G" Control Board Without Harvest Pump Timer Operation Flow Chart
Cycle
Steps
14
To 1. 1-Minute Fill Cycle
Icemaker starts at
"1. 1-Minute Fill Cycle."
3. Ice Level Lowered
MBC closed
(MBC actuator paddle disengaged)
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
2. Icemaker Off
All components
de-energized.
To 1. 1-Minute Fill Cycle
Yellow "BC OPEN" LED continues. All
components de-energized.
"E" and "G" Control Board Without Harvest Pump Timer Operation Flow Chart, Continued
3. Ice Level Lowered
No ice touching
TBC bulb.
Icemaker starts at
"1. 1-Minute Fill Cycle."
TBC closed
2. Icemaker Off
All components
1. Bin Full
de-energized.
Within 10 sec.
after ice contacts
TBC bulb,
icemaker shuts
down.
TBC open
All components
de-energized
Ice contacts TBC bulb
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.
the 5-min. short cycle protection timer terminates.
• Freeze Cycle–15 sec. after activation if activated at least 15 sec. before
Otherwise, at the end of the next harvest cycle.
MBC open (MBC actuator paddle engaged)
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
Mechanical Bin Control Shutdown Sequence Flow Chart
Shutdown
TBC
Shutdown
Thermostatic Bin Control Shutdown Sequence Flow Chart
and Restart
Operation
and Restart
MBC Operation
15
Legend:
MBC–mechanical bin control
TBC–themostatic bin control
2. "G" Control Board with Harvest Pump Timer Operation
10th cycle
(except KM-515M_H)
(S4 dip switch 5 & 6)
2 sec., then reverses
for 10/20 sec.
4. Pump-Out Cycle
3. Freeze Cycle
• Factory set for every
• Minimum freeze time: 5 min.
• Maximum freeze time: freeze timer
setting (S4 dip switch 9 & 10)
• Pump motor stops for
(S4 dip switch 3 & 4)
FS in control
5-min. minimum
freeze timer in
Comp continues
FMR continues
HGV energized
PM de-energizes for 2 sec.,
then reverses for 10/20 sec.
FM de-energized
LLV de-energized
Icemaker starts at
"1. 1-Minute Fill Cycle."
3. Ice Level Lowered
FS opens or
freeze timer
terminates
2. Icemaker Off
All components
de-energized.
control
FS closed
Comp continues
FMR continues
FM energized
LLV energized
PM energized
HGV de-energized
To 1 above
MBC closed
(MBC actuator paddle disengaged)
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
Yellow "BC OPEN" LED continues. All
FS check
50 sec.
Harvest Pump
Timer
PM energized
WV de-energized
1 to 3-min. harvest timer in
control (S4 dip switch 1 & 2)
Thermistor temperature reaches
FS closed
Comp energized
FMR energized
HGV energized
2. Harvest Cycle
Thermistor in
control
• 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.
"G" Control Board With Harvest Pump Timer Operation Sequence Flow Chart
FS check
1. 1-Minute
Fill Cycle
WV energized
48°F (9°C) (3.9 kΩ or less). Harvest
WV energized
FS open
FS open
timer starts (1 to 3 min.).
freeze cycle if activated at the end of the harvest cycle.
• Fill Cycle–15 sec. after activation.
Shutdown Delay:
1. Bin Full
If FS is open, Comp stops and cycle returns to 1-min. ll.
the 5-min. short cycle protection timer terminates.
• Harvest Cycle–At the end of the harvest cycle, or up to 15 sec. into the
• Freeze Cycle–15 sec. after activation if activated at least 15 sec. before
Otherwise, at the end of the next harvest cycle.
components de-energized.
Components Energized when the Control Switch is in the "WASH" Position
MBC open (MBC actuator paddle engaged)
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
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.
Cycle
Steps
Startup
16
Shutdown
and Restart
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
MBC Operation
WV–inlet water valve
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 3-phase models, the neutral (W) is provided through MT. To conrm a good
neutral, check for 60VAC from white (W) neutral to ground (GND). If 60VAC is
present, neutral is good. If 60VAC is not present, check 208-230VAC main power
supply to MT. If 208-230VAC is present, check MT continuity.
• When checking voltage from the CB K1 connector (10 pin connector), pull CB
K1connector 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.
17
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: 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. If
TBC 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.
18
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.
19
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).
20
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.
21
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
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
Pump-Out
Frequency
"E" Control Board "G" Control Board
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.
22
9) Shutdown
a) "E" Control Board: 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! 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. Diagnosis: See "II.D.1. Thermostatic Bin
Control Check and Cleaning."
b) Mechanical Bin Control:
See "II.D.2. Mechanical Bin Control Check and Cleaning."
Legend: 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; LLV–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
23
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.
24
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.
25
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.
26
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.
27
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
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
Pump-Out
Frequency
"G" Control Board
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
28
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: 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; LLV–liquid line valve; MBC–mechanical
bin control; PM–pump motor; TXV–thermostatic expansion valve; WRV–water
regulating Valve; WV–inlet water valve
29
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
"E" 2, 3, 4, 1
"G" 1, 4, 3, 2
Correct LED
Lighting Sequence
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
30
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: If used on "G" control boards, a jumper (4A4883G01) must be placed on the 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 and base 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
31
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 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 and base 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.
MBC Connector
(to control
board K4 (red)
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
MBC
MBC Wire
Harness (white)
Connector
Actuator
Paddle
Fig. 1
Control Cleaning." If MBC switch still reads
open, replace MBC.
Model Shown: KM-901M_H/3
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
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
Freeze Cycle 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
Shutdown
end of the harvest cycle.
protection timer terminates. Otherwise, at the end of the next harvest cycle.
Legend: MBC–mechanical bin control; CB–control board
32
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 and base cover, 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 and base cover in their correct positions.
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
MBC Wire
Bin Control Proximity
Switch Closed
(calling for ice)
Bin Control
Proximity Switch
Open (bin full,
icemaker off or
shutting down)
KM-901M_H/3
MBC Bracket
Switch Mount
Actuator
Paddle
Fig. 2
Magnet
Harness (white)
Connector
MBC Connector
(to control
board K4 (red)
connector)
Model Shown: KM-901M_H/3
33
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) 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.
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.
Disconnect This
End of Pump
Tubing to Drain
Water Tank
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
Base Cover
Fig. 3
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.
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
34
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) 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.
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) Replace the base cover in its correct position.
9) Move the control switch to the "ICE" position.
10) Replace the front panel in its correct position.
11) Turn on the power supply to start the automatic icemaking process.
Legend: CB–control board; FS–oat switch
Vent
Flush
Shaft
Float Switch
Housing
Float
Retainer Rod
Fig. 4
35
Rubber Boot
and Hose
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
36
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
(3 phase and KM-650MWH-M
only) (208/230VAC/115VAC)
3. Fuse (Control Box) a) Blown.
4. Thermostatic Bin Control
See "II.D. Bin Control Check"
5. Control Switch a) In "OFF" or "WASH" position.
6. High-Pressure Switch a) Dirty condenser.
7. Control Transformer
(115VAC/10.5VAC)
8. Control Board
See "II.C. Control Board Check"
9. Mechanical Bin Control
See "II.D. Bin Control Check"
10. Water Supply a) Water supply off or improper water pressure.
11. Inlet Water Valve a) Screen or orice clogged.
12. Float Switch
See "II.E. Float Switch Check
and Cleaning"
13. Compressor a) Compressor relay/magnetic contactor contacts bad or coil winding
14. Hot Gas Valve a) Closed in harvest cycle.
a) Voltage tap switch not set to proper voltage.
b) Coil winding open or shorted.
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.
b) Bad contacts.
b) Fan motor not operating.
c) Refrigerant overcharged.
d) Bad contacts.
e) Refrigerant lines or components plugged.
a) Coil winding open or shorted.
a) In alarm.
b) Yellow "BC OPEN" LED on (bin full) ("G" control board).
c) Defective.
a) Tripped with bin lled with ice.
b) Actuator does not move freely.
c) Defective.
b) External water lters clogged.
b) Coil winding open.
c) Water valve open in freeze cycle.
a) Float does not move freely.
b) Defective.
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.
b) Open in freeze cycle.
37
No Ice Production - Possible Cause
15. Thermistor
See "II.F. Thermistor Check"
16. Pump Motor a) Motor winding open.
1 7. Thermostatic Expansion Valve a) Bulb loose.
18. Liquid Line Valve a) Closed in freeze cycle.
19. Fan Motor a) Motor winding open.
20. Water System a) Water leaks causing short freeze time.
a) Loose, disconnected, or defective.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
d) Mechanical seal worn out.
b) Operating erratically.
b) Open in harvest cycle.
b) Bearing worn out or locked rotor.
c) Defective capacitor.
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
4. Water Supply a) Low water pressure.
5. Inlet Water Valve a) Screen or orice clogged.
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
7. Refrigerant Charge a) Low.
8. Control Board
See "III.C. Settings and
Adjustments" and "II.C. Control
Board Check"
9. Bin Control
See "II.D. Bin Control Check"
10. Thermistor
See "II.F. Thermistor Check"
a) Dirty.
b) Out of position.
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.
b) Defective.
a) Dirty, sticking.
b) Defective.
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.
a) Actuator does not move freely.
a) Loose, disconnected, or defective.
38
Freeze-Up - Possible Cause
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
3. Refrigerant Charge a) Low.
4. Control Board
See "II.C. Control Board Check"
5. Inlet Water Valve a) Leaking by.
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
7. Pump Motor a) RPM too slow.
8. Thermostatic Expansion Valve a) Bulb loose or defective.
9. Liquid Line Valve a) Restricted.
10. Headmaster (C.P.R.)
(remote models)
a) Dirty.
b) Out of position.
a) Freeze timer (S4 dip switch 9 & 10) set incorrectly.
b) Defective.
a) Float does not move freely.
b) Defective.
b) Impeller damaged.
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
3. Refrigerant Charge a) Low.
4. Water Supply a) Low water pressure.
5. Control Board
See "II.C. Control Board Check"
6. Thermistor
See "II.F. Thermistor Check"
7. Hot Gas Valve a) Erratic or closed.
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.
a) Dirty.
b) Out of position.
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.
a) Thermistor connection loose (K3).
b) Defective.
a) Loose, disconnected, or defective.
39
Low Ice Production - Possible Cause
Long Freeze Cycle
1. Evaporator a) Scaled up, dirty.
2. Float Switch
See "II.E. Float Switch Check
and Cleaning"
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"
7. Refrigerant Charge a) Low.
8. Thermostatic Expansion Valve a) Bulb loose.
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) Scaled up, dirty.
b) Float sticking.
c) Defective switch.
a) Float switch connection loose (K5).
b) Defective.
b) Defective.
a) Not bypassing.
40
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.
41
A. Control Board Layout
1. "E" Control Board
"E" Control Board
• "ALARM RESET" Button
• Freeze Timer
LED (yellow)
• Harvest Backup
Timer LED (orange)
• Alarm Buzzer
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• 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
• S4 Dip Switch
• K2 Connector
Control Transformer
(10.5VAC)
• "OUTPUT TEST" Button
(used to test relays on control board)
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K4 (red) Connector
Open
• Part Number
• K5 (black) Connector
Float Switch
(water level)
Microprocessor
(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 (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.
"E" Control Board
Part Number 2A1410-02
42
2. "G" Control Board
• Bin Control Switch
Closed LED (green)
(on continuously
in thermostatic bin
control application)
• "ALARM RESET" Button
"G" Control Board
• S4 Dip Switch
• "OUTPUT TEST" Button
(used to test relays on control board)
• Bin Control Switch
Open LED (yellow)
(mechanical bin
control application only)
• Part Number
• Alarm Buzzer
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• 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
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K4 (red) Connector
Mechanical Bin Control or
K4 Jumper (thermostatic
bin control application)
• S5 Dip Switch
• K5 (black) Connector
Float Switch
(water level)
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
• K2 Connector
Control Transformer
(10.5VAC)
"G" Control Board
Part Number 2A3792-01
43
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
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
Pump-Out Cycle 1, 4*, 3, 2 Comp, FMR, HGV, PM,
WV*
Energized
Components
Min. Max. Avg.
5 minutes freeze timer
10 seconds 20 seconds *pump-out timer
Time LEDs are On
30 to 35 minutes
setting
setting
The built in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
1 High Evaporator Temp.
(temperature > 127°F) (53°C)
2 Harvest Backup Timer
(harvest > 20 min. for two cycles
in a row)
3 Freeze Timer
(freeze > specied setting for
two cycles in a row)
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6 Low Voltage
(92Vac±5% or less)
7 High Voltage
(147Vac±5% or more)
Type of Alarm Notes
Check for harvest problem (stuck HGV or relay), hot
water entering icemaker, or shorted thermistor.
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.
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.
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–oat switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); LLV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
44
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
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
Freeze Cycle 1 Comp, FM/FMR, PM,
LLV
Pump-Out Cycle 1, 4*, 3, 2 Comp, FMR, HGV, PM,
WV*
Energized
Components
Min. Max. Avg.
5 minutes freeze timer
10 seconds 20 seconds *pump-out timer
Time LEDs are On
setting
30 to 35 minutes
setting
setting
The built-in safeties shut down the icemaker and have alarms as listed below.
No. of Beeps
(every 3 sec.)
1 High Evaporator Temp.
(temperature > 127°F) (53°C)
2 Harvest Backup Timer
(harvest > 20 min. for two
cycles in a row)
3 Freeze Timer
(freeze > freeze timer setting
for two cycles in a row)
To reset the above safeties, press the "ALARM RESET" button with the power supply on.
6 Low Voltage
(92Vac±5% or less)
7 High Voltage
(147Vac±5% or more)
Type of Alarm Notes
Check for harvest problem (stuck HGV or relay), hot
water entering icemaker, or shorted thermistor.
Check for open thermistor, HGV not opening, TXV or
LLV leaking by, low charge, or inefficient Comp, or WRV
leaking by.
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.
Red LED turns off if voltage protection operates.
The control voltage safeties automatically reset when
voltage is corrected.
Legend: Comp–compressor; FM–fan motor; FMR–fan motor remote; FS–oat switch;
HGV–hot gas valve; HM–headmaster (C.P.R.); LLV–liquid line valve; PM–pump
motor; TXV–thermostatic expansion valve; WRV–water regulating valve;
WV–inlet water valve
45
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
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
b) "G" Control Board with Harvest Pump Timer Operation
S4 Dip Switch No. 1 2 3 4 5 6 7 8 9 10
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(-M) OFF OFF OFF OFF ON ON ON OFF OFF OFF
KM-901MAH OFF OFF ON OFF ON ON ON OFF OFF ON
OFF OFF OFF ON ON ON OFF OFF OFF OFF
S5 Dip Switch (Do Not Adjust)
"G" Control Board
Dip Switch No.
All Models OFF OFF OFF OFF OFF
1 2 3 4 5
S4 Dip Switch
"E" and "G" Control Boards
Freeze Timer (9 & 10)
Factory Use (8)
Bin Control Selector (7) "E" Control Board
Harvest Pump Timer (7) "G" Control Board
(Do Not Adjust)
Pump-Out Frequency Control (5 & 6)
Pump-Out Timer (3 & 4)
1 2 3 4 5 6 7 8 9 10
ON
Harvest Timer (1 & 2)
S5 Dip Switch
"G" Control Board Only
Do Not Adjust
Rell Counter
(2 through 5)
Float Switch
1 2 3 4 5
ON
Selector (1)
46
2. Harvest Timer (S4 dip switch 1 & 2)
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
No. 1 No. 2
OFF OFF 60
ON OFF 90
OFF ON 120
ON ON 180
(sec.)
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.)
T1
OFF OFF 10 150 Closed
ON OFF 10 180 Closed
OFF ON 10 120 Open
ON ON 20 180 Closed
T2
Inlet Water
ValveNo. 3 No. 4
T1: Time to drain the water tank
T2: Harvest timer at pump out
47
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
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
Pump-Out
Frequency
"E" Control Board "G" Control Board
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
No. 7
ON Mechanical (requires resistor wire harness)
OFF Thermostatic
Bin Control
48
(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
No. 7
ON 50
OFF 0
Pump Motor
Time (sec.)
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
No. 9 No. 10
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 75
(min.)
49
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.
50
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.
51
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.
52
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.
53
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
Hot Gas Valves
Liquid Line
Valves
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
KM-650MWH-M
Water Regulating
Valve
• 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.
• Replace the strainer if applicable.
• Use copper tube of the same diameter and length when replacing valve lines.
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.
Tighten the water regulating valve are nut to a torque of 39.8 ft-lb/53.9N·m.
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
Top View
proper range, verify the refrigerant charge.
3) Check that the condenser drain temperature is stable.
54
Adjustment Screw
CW – Higher
CCW – Lower
Fig. 5
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
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Yearly Icemaker and
Dispenser Unit/Ice
Storage Bin Liner
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More
Water Hoses Inspect the water hoses and clean/replace if necessary.
As Needed Marine Model
Condenser
Check for proper pressure and change if necessary.
neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
(rust colored spots) using a non-abrasive cleanser.
Wipe down with a clean cloth and warm water.
Clean and sanitize per the cleaning and sanitizing instructions provided
in the instruction manual or maintenance label on the icemaker.
system. Clean the water supply inlet screen.
frequent cleaning may be required depending on location.
If contaminated seawater enters the system, ush with clean seawater or
fresh water as soon as possible to minimize damage to the condenser.
55
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) 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.
4) Replace the base cover and the 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.
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover
Fig. 6
56
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.
57
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.
58
VIII. Technical Information
A. Specication Sheets
1. KM-320MAH
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
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *325 (147) 311 (141) 287 (130)
Reference without *marks 80 315 (143) 293 (133) 265 (120)
90 311 (141) *278 (126) 251 (114)
100 304 (138) 272 (123) 226 (103)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 7.2 lbs. (3.3 kg) 360 pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 800(6.9) 750(5.5)
WATER gal./24HR (gal./100 lbs.) 51(18.4) 117(35.9)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 123 lbs. (56 kg), Shipping 153 lbs. (70 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model ASE32C3E-CAA
CONDENSER Air-Cooled, Fin and Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 4.3 oz. (575g)
DESIGN PRESSURE High 467PSIG, Low 210PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
59
2. KM-320MWH
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
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *352 (160) 348 (158) 324 (147)
Reference without *marks 80 349 (158) 342 (155) 309 (140)
90 348 (158) *337 (153) 308 (140)
100 337 (153) 330 (150) 281 (127)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 7.2 lbs. (3.3 kg) 360 pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 730(5.2) 730(5.0)
WATER gal./24HR (gal./100 lbs.) 57(16.8) 103(29.4)
WATER COOLED CONDENSER 528(157) 327(93)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 123 lbs. (56 kg), Shipping 153 lbs. (70 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL Pressure Regulator
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model ASE32C3E-CAA
CONDENSER Water-Cooled, Tube in Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 0.8 oz. (486g)
DESIGN PRESSURE High 427PSIG, Low 210PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
60
3. KM-515MAH
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 11.7 A (5 Min. Freeze AT 104°F/W T 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *501 (227) 482 (218) 447 (203)
Reference without *marks 80 486 (221) 456 (207) 416 (189)
90 482 (218) *435 (197) 396 (180)
100 472 (214) 426 (193) 361 (164)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 10.2 lbs. (4.6 kg) 480pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1090(6.0) 980(4.7)
WATER gal./24HR (gal./100 lbs.) 99(22.8) 188(37.6)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST55C1E-CAA-202
CONDENSER Air-Cooled, Fin and Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 1 lb. 7.3 oz. (660g)
DESIGN PRESSURE High 467PSIG, Low 206PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Dispenser or Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
61
4. KM-515MWH
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
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *500 (227) 481 (218) 465 (211)
Reference without *marks 80 486 (220) 457 (207) 445 (202)
90 481 (218) *436 (198) 422 (191)
100 481 (218) 433 (196) 409 (186)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 10.3 lbs. (4.7 kg) 480pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 960(5.30) 940(4.5)
WATER gal./24HR (gal./100 lbs.) 105(24.0) 163(32.5)
WATER COOLED CONDENSER 523(120) 352(70)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT Cond. Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT Cond. Outlet 3/8" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL Pressure Regulator
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST55C1E-CAA-202
CONDENSER Water-Cooled, Tube in Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 0 lb. 14.8 oz. (420g)
DESIGN PRESSURE High 427PSIG, Low 206PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Dispenser or Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
62
5. KM-515MRH
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 11.3A (5 Min. Freeze AT 104°F/W T 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *491 (223) 480 (218) 443 (201)
Reference without *marks 80 482 (219) 465 (211) 417 (189)
90 480 (218) *452 (205) 408 (185)
100 465 (211) 442 (200) 368 (167)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 10.3 lbs. (4.7 kg) 480pcs.
APPROXIMATE STORAGE CAPACITY N/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)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 151 lbs. (68 kg), Shipping 175 lbs. (79 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST55C1E-CAA-202
CONDENSER Remote Condenser Unit: URC-5F
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-5F
REFRIGERANT CHARGE R404A, 4 lbs. 4.8 oz. (1950g)
(Icemaker 2 lbs. 6.8 oz. Cond. Unit 1 lbs. 14 oz.)
DESIGN PRESSURE High 467PSIG, Low 206PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Dispenser or Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
63
6. KM-600MAH
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
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *592 (269) 566 (257) 516 (234)
Reference without *marks 80 572 (260) 532 (241) 474 (215)
90 566 (257) *503 (228) 447 (203)
100 551 (250) 490 (222) 396 (180)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 14.3 lbs. (6.5 kg) 720 pcs.
APPROXIMATE STORAGE CAPACITY N/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)
CEC/CEE TIER LEVEL 2
ENERGY STAR YES
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST55C1E-CAA
CONDENSER Air-Cooled, Fin and Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 11 oz. (765g)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
64
7. KM-650MAH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 7.2 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *661 (300) 632 (287) 591 (268)
Reference without *marks 80 639 (290) 594 (269) 553 (251)
90 632 (287) *562 (255) 520 (236)
100 624 (283) 552 (250) 482 (219)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 14.6 lbs. (6.6 kg) 720 pcs.
APPROXIMATE STORAGE CAPACITY N/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)
CEC/CEE TIER LEVEL 2
ENERGY STAR Yes
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST61C1E-CAV-202
CONDENSER Air-Cooled, Fin and Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 8 oz. (680g)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
65
8. KM-650MWH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 5.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *661 (300) 649 (294) 616 (280)
Reference without *marks 80 652 (296) 633 (287) 591 (268)
90 649 (294) *620 (281) 581 (264)
100 637 (289) 611 (277) 546 (248)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 14.2 lbs. (6.5 kg) 720 pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1060(4.10) 1080(3.92)
WATER gal./24HR (gal./100 lbs.) 138(22.3) 268(40.5)
WATER COOLED CONDENSER 744(120) 476(72)
gal./24HR (gal./100 lbs.)
CEC/CEE TIER LEVEL 2
ENERGY STAR N/A
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT Condenser Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT Condenser Outlet 3/8" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL Pressure Regulator
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST61C1E-CAV-202
CONDENSER Water-Cooled, Tube in Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 5.2 oz. (600g)
DESIGN PRESSURE High 427PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
66
9. KM-650MWH-M
AWAITING DATA
Note: We reserve the right to make changes in specications and design without prior
notice.
67
10. KM-650MRH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 7.4 A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *632 (287) 612 (278) 574 (260)
Reference without *marks 80 617 (280) 586 (266) 541 (246)
90 612 (278) *564 (256) 521 (236)
100 601 (272) 554 (251) 482 (219)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 14.4 lbs. (6.5 kg) 720 pcs.
APPROXIMATE STORAGE CAPACITY N/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)
CEC/CEE TIER LEVEL 3
ENERGY STAR Yes
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 37-7/16" (560 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 169 lbs. (77 kg), Shipping 200 lbs. (91 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model RST61C1E-CAV
CONDENSER Remote Condenser Unit: URC-5F
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-5F
REFRIGERANT CHARGE
DESIGN PRESSURE High 467 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
R-404A, 5 lbs. 14.9 oz. (2690 g)
(Icemaker 4 lbs. 0.9 oz. Cond. Unit 1 lb. 14 oz.)
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
68
11. KM-901MAH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 11.4 A (5 Min. Freeze AT 104°F/W T 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *874 (396) 832 (378) 785 (356)
Reference without *marks 80 842 (382) 778 (353) 736 (334)
90 832 (378) *732 (332) 687 (312)
100 826 (375) 721 (327) 646 (293)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 13.6 lbs. (6.2 kg) 720pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1710(5.6) 1600(4.4)
WATER gal./24HR (gal./100 lbs.) 143(19.6) 240(27.5)
EXTERIOR DIMENSIONS (WxDxH) 30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 196 lbs. (89 kg), Shipping 256 lbs. (116 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model CS12K6E-PFV-237
CONDENSER Air-Cooled, Fin and Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 2 lb. 15 oz. (1320g)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
69
12. KM-901MWH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 8.7A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 15 A
MAXIMUM FUSE SIZE 15 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *912 (414) 887 (402) 849 (385)
Reference without *marks 80 893 (405) 854 (388) 815 (370)
90 887 (402) *827 (375) 787 (357)
100 878 (398) 818 (371) 751 (341)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 13.4 lbs. (6.1 kg) 720pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1550(4.5) 1480(3.9)
WATER gal./24HR (gal./100 lbs.) 181(21.9) 245(26.9)
WATER COOLED CONDENSER 1151(139) 631(69)
gal./24HR (gal./100 lbs.)
CEE TIER (7/1/11 rev) -
ENERGY STAR NO
EXTERIOR DIMENSIONS (WxDxH) 30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 189 lbs. (86 kg), Shipping 249 lbs. (113 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT Cond. Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT Cond. Outlet 3/8" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL Pressure Regulator
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model CS12K6E-PFV-237
CONDENSER Water-Cooled, Tube in Tube Type
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 1 lb. 15.4 oz. (890g)
DESIGN PRESSURE High 427PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
70
13. KM-901MRH
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire for 115V)
AMPERAGE 11.6A (5 Min. Freeze AT 104°F/WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *889 (403) 859 (389) 803 (364)
Reference without *marks 80 866 (393) 818 (371) 755 (343)
90 859 (389) *785 (356) 724 (328)
100 843 (382) 771 (350) 668 (303)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 13.5 lbs. (6.1 kg) 720pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1770(5.4) 1590(4.3)
WATER gal./24HR (gal./100 lbs.) 152(19.3) 246(27.7)
EXTERIOR DIMENSIONS (WxDxH) 30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 189 lbs. (86 kg), Shipping 249 lbs. (113 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model CS12K6E-PFV-279
CONDENSER Remote Condenser Unit: URC-9F
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-9F
REFRIGERANT CHARGE R404A, 9 lbs. 4 oz. (4200g)
(Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
71
14. KM-901MRH3
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
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *899 (408) 874 (397) 817 (371)
Reference without *marks 80 880 (399) 842 (382) 772 (350)
90 874 (397) *815 (370) 749 (340)
100 855 (388) 800 (363) 689 (313)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 14.2 lbs. (6.4 kg) 720pcs.
APPROXIMATE STORAGE CAPACITY N/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)
EXTERIOR DIMENSIONS (WxDxH) 30" x 27-3/8" x 37-7/16" (762 x 695 x 950 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 198 lbs. (90 kg), Shipping 258 lbs. (117 kg)
CONNECTIONS - ELECTRIC Permanent-Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
3/8" OD Tube
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Thermostatic or Mechanical Bin Control
COMPRESSOR Hermetic, Model CS12K6E-TF5-279
CONDENSER Remote Condenser Unit: URC-9F
EVAPORATOR Vertical Type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
Condensing Pressure Regulator on URC-9F
REFRIGERANT CHARGE R404A, 9 lbs. 4 oz. (4200g)
(Icemaker 5 lbs. 5 oz. Cond. Unit 3 lbs. 15 oz.)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-Out (Internal)
COMPRESSOR PROTECTION Auto-Reset Overload Protector (Internal)
REFRIGERANT CIRCUIT PROTECTION Auto-Reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
Note: We reserve the right to make changes in specications and design without prior
notice.
72
B. Performance Data
y
1. KM-320MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 325 147 311 141 287 130
80/27 315 143 293 133 265 120
90/32 311 141 278 126 251 114
100/38 304 138 272 123 226 103
70/21
80/27
90/32
70/21 117 0.44
80/27 102 0.39 72 0.27 69 0.26
90/32 97 0.37 51 0.19 44 0.17
100/38 75 0.28 50 0.19 38 0.14
70/21
80/27
90/32
70/21
80/27
90/32
70/21 216 15.2
80/27 230 16.2 259 18.2 277 19.5
90/32 235 16.5 280 19.7 299 21.0
100/38 237 16.7 285 20.0 317 22.3
70/21 52 3.7 53 3.7 54 3.8
80/27 53 3.7 54 3.8 54 3.8
90/32 53 3.7 55 3.9 56 3.9
100/38 53 3.7 55 3.9 56 3.9
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
750
761
765
765
29
31
31
32
5.5
4.8
4.6 2.3
3.6
765
784
800
802
97 0.37 86 0.33
31
34
37
38
4.6
3.5
2.5
2.5
235 16.5 255 17.9
777
792
810
820
35
38
41
45
4.2
3.4
2.1
TOTAL HEAT OF REJECTION FROM CONDENSER 7,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
73
2. KM-320MWH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
115-120/60/1
70/21 352 160 348 158 324 147
80/27 349 158 342 155 309 140
90/32 348 158 337 153 308 140
100/38 337 153 330 150 281 127
70/21
80/27
90/32
70/21 430 1.63
80/27 465 1.76 535 2.03 822 3.11
90/32 476 1.80 585 2.21 842 3.19
100/38 605 2.29 645 2.44 1078 4.08
70/21
80/27
90/32
70/21
80/27
90/32
70/21 263 18.5
80/27 263 18.5 263 18.5 265 18.7
90/32 263 18.5 263 18.5 265 18.6
100/38 264 18.6 263 18.5 267 18.8
70/21 53 3.7 54 3.8 55 3.9
80/27 54 3.8 56 3.9 56 3.9
90/32 54 3.8 57 4.0 58 4.0
100/38 54 3.8 57 4.0 58 4.1
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
730
730
730
726
27
28
28
29
5.0
4.5
4.4 2.6
3.6
730
730
730
728
476 1.80 682 2.58
28
30
31
31
4.4
3.5
2.8
2.8
263 18.5 265 18.6
722
718
720
710
30
32
33
35
4.0
3.4
2.4
TOTAL HEAT OF REJECTION FROM CONDENSER 5,700 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 45 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
74
3. KM-515MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC) 50/10 70/21 90/32
70/21 501 227 482 218 447 203
80/27 486 221 456 207 416 189
90/32 482 218 435 197 396 180
100/38 472 214 426 193 361 164
70/21
80/27
90/32
70/21 188 0.71
80/27 168 0.64 128 0.48 124 0.47
90/32 162 0.61 99 0.38 90 0.34
100/38 132 0.50 97 0.37 82 0.31
70/21
80/27
90/32
70/21
80/27
90/32
70/21 226 15.9
80/27 244 17.2 282 19.8 306 21.5
90/32 250 17.6 308 21.7 335 23.5
100/38 254 17.8 314 22.1 359 25.2
70/21 45 3.2 49 3.5 54 3.8
80/27 48 3.4 55 3.8 60 4.2
90/32 49 3.5 59 4.1 64 4.5
100/38 50 3.5 60 4.2 69 4.9
WATER TEMP. (ºF/ºC)
980
1005
1012
1011
26
27
27
28
4.4
4.0
3.9 2.72.7
3.4
1012
1055
1090
1095
162 0.61 147 0.56
250 17.6 278 19.5
27
30
32
33
3.9
3.2
2.7
1038
1071
1111
1130
30
33
35
37
3.8
3.4
2.7
TOTAL HEAT OF REJECTION FROM CONDENSER
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
9,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
75
4. KM-515MWH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 500 227 481 218 465 211
80/27 486 220 457 207 445 202
90/32 481 218 436 198 422 191
100/38 481 218 433 196 409 186
70/21
80/27
90/32
70/21 515 1.95
80/27 540 2.04 591 2.24 966 3.66
90/32 548 2.07 628 2.38 958 3.63
100/38 688 2.60 705 2.67 1262 4.78
70/21
80/27
90/32
70/21
80/27
90/32
70/21 270 19.0
80/27 271 19.0 272 19.1 276 19.4
90/32 271 19.0 273 19.2 277 19.5
100/38 272 19.1 274 19.3 280 19.7
70/21 50 3.5 52 3.6 56 3.9
80/27 51 3.6 54 3.8 59 4.2
90/32 52 3.6 56 3.9 61 4.3
100/38 53 3.7 57 4.0 65 4.6
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
940
944
946
946
29
29
29
30
3.8
3.6
3.5 2.72.7
3.1
946
954
960
961
548 2.07 805 3.05
29
29
29
30
3.5
3.0
2.7
271 19.0 274 19.3
952
958
965
970
30
31
31
33
3.4
3.1
2.7
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 49 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
8,300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
76
5. KM-515MRH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 491 223 480 218 443 201
80/27 482 219 465 211 417 189
90/32 480 218 452 205 408 185
100/38 465 211 442 200 368 167
70/21
80/27
90/32
70/21 198 0.75
80/27 175 0.66 128 0.48 128 0.49
90/32 168 0.64 94 0.36 88 0.33
100/38 133 0.50 93 0.35 82 0.31
70/21
80/27
90/32
70/21
80/27
90/32
70/21 216 15.2
80/27 230 16.1 257 18.1 272 19.1
90/32 234 16.4 277 19.5 294 20.6
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
100/38 50 3.5 57 4.0 59 4.1
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1000
1020
1026
1031
26
27
27
28
5.0
4.5
4.3 2.7
3.6
1026
1061
1090
1097
168 0.64 153 0.58
27
29
31
31
4.3
3.4
2.7
2.7
234 16.4 252 17.7
1058
1091
1121
1150
30
32
34
36
4.1
3.6
2.7
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME 43 CU. IN (URC-5F)
8,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
1,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
77
6. KM-600MAH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 592 269 566 257 516 234
80/27 572 260 532 241 474 215
90/32 566 257 503 228 447 203
100/38 551 250 490 222 396 180
70/21
80/27
90/32
70/21 259 0.98
80/27 223 0.84 150 0.57 154 0.58
90/32 212 0.80 99 0.38 92 0.35
100/38 160 0.61 97 0.37 85 0.32
70/21
80/27
90/32
70/21
80/27
90/32
70/21 238 16.7
80/27 254 17.9 287 20.2 319 22.4
90/32 259 18.2 310 21.8 342 24.1
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
100/38 57 4.0 59 4.2 62 4.4
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1040
1073
1084
1073
33
34
35
36
4.2
3.7
3.6 2.0
2.9
1084
1142
1190
1191
212 0.80 191 0.72
35
38
40
41
3.6
2.7
2.0
2.0
259 18.2 290 20.4
1102
1137
1195
1200
38
42
44
48
3.4
2.9
2.0
TOTAL HEAT OF REJECTION FROM CONDENSER 9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
78
7. KM-650MAH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 661 300 632 287 591 268
80/27 639 290 594 269 553 251
90/32 632 287 562 255 520 236
100/38 624 283 552 250 482 219
70/21
80/27
90/32
70/21 232 0.88
80/27 203 0.77 143 0.54 139 0.53
90/32 194 0.73 101 0.38 89 0.34
100/38 149 0.56 98 0.37 78 0.30
70/21
80/27
90/32
70/21
80/27
90/32
70/21 232 16.3
80/27 248 17.4 280 19.7 307 21.6
90/32 252 17.8 302 21.3 331 23.2
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
100/38 53 3.7 59 4.1 64 4.5
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1180
1205
1212
1218
29
30
31
32
3.5
3.2
3.1 2.0
2.6
1212
1255
1290
1299
194 0.73 172 0.65
31
34
36
36
3.1
2.5
2.0
2.0
252 17.8 280 19.7
1250
1289
1326
1360
34
36
38
41
2.9
2.6
2.0
TOTAL HEAT OF REJECTION FROM CONDENSER 11,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
79
8. KM-650MWH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 661 300 649 294 616 280
80/27 652 296 633 287 591 268
90/32 649 294 620 281 581 264
100/38 637 289 611 277 546 248
70/21
80/27
90/32
70/21 744 2.81
80/27 775 2.93 838 3.17 1405 5.32
90/32 784 2.97 882 3.34 1380 5.22
100/38 985 3.73 999 3.78 1838 6.96
70/21
80/27
90/32
70/21
80/27
90/32
70/21 239 16.8
80/27 239 16.8 240 16.9 250 17.6
90/32 239 16.8 240 16.9 249 17.5
100/38 243 17.1 242 17.0 257 18.1
70/21 46 3.2 47 3.3 50 3.5
80/27 47 3.3 48 3.4 52 3.7
90/32 47 3.3 49 3.5 53 3.7
100/38 48 3.4 50 3.5 56 4.0
WATER TEMP. (ºF/ºC)
50/10
1080
1076
1074
28
28
29
29
4.0
3.7
3.5 2.3
3.0
70/21 90/32
1074
1066
1060
1066
784 2.97 1169 4.42
29
30
30
31
3.5
2.9
2.4
2.4
239 16.8 246 17.3
1092
1098
1086
11101086
31
32
33
35
3.3
2.9
2.1
TOTAL HEAT OF REJECTION FROM CONDENSER 9,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR 1,600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 73 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
80
9. KM-650MWH-M
AWAITING DATA
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
81
10. KM-650MRH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 632 287 612 278 574 260
80/27 617 280 586 266 541 246
90/32 612 278 564 256 521 236
100/38 601 272 554 251 482 219
70/21
80/27
90/32
70/21 267 1.01
80/27 228 0.86 149 0.56 155 0.59
90/32 216 0.82 93 0.35 88 0.33
100/38 160 0.61 92 0.35 82 0.31
70/21
80/27
90/32
70/21
80/27
90/32
70/21 211 14.9
80/27 227 15.9 258 18.1 277 19.5
90/32 231 16.3 280 19.7 301 21.1
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
100/38 54 3.8 57 4.0 62 4.4
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1220
1242
1249
30
31
32
32
4.1
3.7
3.5
3.0
1249
1288
1320
1326
216 0.82 195 0.74
32
33
35
35
3.5
2.7
2.1
2.1
231 16.3 253 17.8
1278
1311
1346
13701251
34
36
37
39
3.3
2.9
2.1
2.1
TOTAL HEAT OF REJECTION FROM CONDENSER 9600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME 40 CU. IN (URC-5F)
1500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
82
11. KM-901MAH
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./day
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC) 50/10 70/21 90/32
70/21 874 396 832 378 785 356
80/27 842 382 778 353 736 334
90/32 832 378 732 332 687 312
100/38 826 375 721 327 646 293
70/21
80/27
90/32
70/21 240 0.91
80/27 219 0.83 175 0.66 158 0.60
90/32 212 0.80 143 0.54 123 0.46
100/38 175 0.66 139 0.52 103 0.39
70/21
80/27
90/32
70/21
80/27
90/32
70/21 219 15.4
80/27 234 16.4 263 18.5 284 20.0
90/32 238 16.7 284 20.0 306 21.5
100/38 242 17.0 289 20.3 327 23.0
70/21 35 2.5 37 2.6 41 2.9
80/27 36 2.6 39 2.7 44 3.1
90/32 37 2.6 41 2.9 46 3.2
100/38 38 2.7 42 3.0 50 3.5
WATER TEMP. (ºF/ºC)
1600
1625
1632
1631
19
20
20
21
4.3
4.0
3.9 2.6
3.3
1632
1675
1710
1715
212 0.80 187 0.71
20
22
24
24
3.9
3.3
2.8
2.7
238 16.7 261 18.3
1658
1691
1731
1750
22
24
26
27
3.6
3.1
2.4
TOTAL HEAT OF REJECTION FROM CONDENSER
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
15,400 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
83
12. KM-901MWH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 912 414 887 402 849 385
80/27 893 405 854 388 815 370
90/32 887 402 827 375 787 357
100/38 878 398 818 371 751 341
70/21
80/27
90/32
70/21 876 3.32
80/27 978 3.70 1186 4.49 1893 7.17
90/32 1010 3.82 1332 5.04 1971 7.46
100/38 1355 5.13 1482 5.61 2559 9.69
70/21
80/27
90/32
70/21
80/27
90/32
70/21 227 16.0
80/27 229 16.1 233 16.4 247 17.4
90/32 230 16.1 236 16.6 249 17.5
100/38 234 16.4 239 16.8 260 18.3
70/21 33 2.3 34 2.4 38 2.6
80/27 34 2.4 36 2.5 40 2.8
90/32 34 2.4 37 2.6 41 2.9
100/38 36 2.5 38 2.7 45 3.2
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1480
1496
1501
1505
1010 3.82 1530 5.79
18
19
19 20
4.1
3.9
3.8
3.4
230 16.1 240 16.9
1501
1528
1550
1556
19
19
2019
3.8
3.4
3.0
1527
1553
1576
1600
20
21
21
22
3.6
3.3
2.93.1
2.7
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR 2,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER 100 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG
13,500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
84
13. KM-901MRH
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 889 403 859 389 803 364
80/27 866 393 818 371 755 343
90/32 859 389 785 356 724 328
100/38 843 382 771 350 668 303
70/21
80/27
90/32
70/21 246 0.93
80/27 225 0.85 182 0.69 165 0.63
90/32 219 0.83 152 0.57 131 0.50
100/38 182 0.69 147 0.56 112 0.42
70/21
80/27
90/32
70/21
80/27
90/32
70/21 208 14.6
80/27 224 15.7 256 18.0 277 19.5
90/32 229 16.1 279 19.6 301 21.2
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
100/38 38 2.7 44 3.1 51 3.6
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1590
1630
1643
1630
18
19
20
20
4.3
4.0
3.9 2.7
3.4
1643
1712
1770
1771
219 0.83 194 0.74
20
21
22
23
3.9
3.4
2.9
2.8
229 16.1 252 17.7
1664
1705
1775
1780
21
23
24
26
3.6
3.2
2.4
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME 121 CU. IN (URC-9F)
14,000 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
85
14. KM-901MRH3
y
APPROXIMATE ICE
PRODUCTION PER 24 HR.
lbs./day kg./da
APPROXIMATE ELECTRIC
CONSUMPTION
watts 100/38
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day m3/day
FREEZING CYCLE TIME
min. 100/38
HARVEST CYCLE TIME
min. 100/38
HEAD PRESSURE
PSIG kg/cm2G
SUCTION PRESSURE
PSIG kg/cm2G
AMBIENT TEMP.
(ºF/ºC)
70/21 899 408 874 397 817 371
80/27 880 399 842 382 772 350
90/32 874 397 815 370 749 340
100/38 855 388 800 363 689 313
70/21
80/27
90/32
70/21 254 0.96
80/27 230 0.87 181 0.69 174 0.66
90/32 222 0.84 147 0.56 134 0.51
100/38 185 0.70 144 0.54 123 0.46
70/21
80/27
90/32
70/21
80/27
90/32
70/21 206 14.5
80/27 220 15.5 249 17.5 272 19.1
90/32 225 15.8 270 19.0 293 20.6
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
100/38 39 2.7 43 3.0 49 3.4
WATER TEMP. (ºF/ºC)
50/10 70/21 90/32
1670
1706
1717
1716
19
20
20
20
4.4
4.0
3.9 2.6
3.4
1717
1779
1830
1837
222 0.84 203 0.77
20
21
22
23
3.9
3.3
2.8
2.7
225 15.8 248 17.5
1755
1803
1861
1890
21
23
24
26
3.6
3.2
2.4
TOTAL HEAT OF REJECTION FROM CONDENSER
TOTAL HEAT OF REJECTION FROM COMPRESSOR
CONDENSER VOLUME 121 CU. IN (URC-9F)
14,100 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
2,200 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
Note:
1. Pressure data is recorded at 5 min. into freezing cycle. The data not in bold
should be used for reference only.
2. We reserve the right to make changes in specications and design without prior
notice.
86
C. Wiring Diagrams
1. Diagrams Without Harvest Pump Timer Relays
a) KM-320M_H, KM-515M_H, KM-600MAH
Control Transformer
Output 10.5V at 115V
PSIG
0
22
PSIG 384±
0
22
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
*
Cut-out 412±
Cut-in 327±22 PSIG 284±22 PSIG
87
b) KM-650MAH, KM-650MWH, KM-901MAH, KM-901MWH
Control Transformer
Output 10.5V at 115V
22
22
* High-Pressure Switch
Air-Cooled Model Water-Cooled Model
PSIG
0
PSIG 384±
0
*
Cut-out 412±
Cut-in 327±22 PSIG 284±22 PSIG
88
c) KM-650MRH, KM-901MRH
Control Transformer
Output 10.5V at 115V
PSIG
0
22
*
* High-Pressure Switch
Cut-out 412±
Cut-in 327±22 PSIG
89
d) KM-901MRH3
Control Transformer
Output 10.5V at 115V
*
90
22
* High-Pressure Switch
PSIG
0
Cut-out 412±
Cut-in 327±22 PSIG
2. Diagrams With Harvest Pump Timer Relays
a) KM-515MAH
Control Transformer
Output 10.5V at 115V
PSIG
0
22
* High-Pressure Switch
Cut-out 412±
Cut-in 327±22 PSIG
*
91
b) KM-650MAH, KM-650MWH, KM-901MAH
Control Transformer
Output 10.5V at 115V
PSIG
0
22
PSIG 384±
0
22
* High-Pressure Switch
*
Air-Cooled Model Water-Cooled Model
Cut-out 412±
Cut-in 327±22 PSIG 284±22 PSIG
92
c) KM-650MWH-M
Control Transformer
Output 10.5V at 115V
PSIG
0
22
*
* High-Pressure Switch
Cut-out 384±
Cut-in 284±22 PSIG
93
d) KM-650MRH
Control Transformer
Output 10.5V at 115V
PSIG
0
22
* High-Pressure Switch
Cut-out 412±
Cut-in 327±22 PSIG
*
94
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