Hoshizaki KM-1301SAJ/3 User manual

Models
KM-1301SAJ/3, SWJ/3, SRJ/3
KM-1601SAJ/3, SWJ/3, SRJ/3
KM-1900SAJ/3, SWJ/3, SRJ/3
KM-2200SWJ3, SRJ3
KM-2600SWJ3, SRJ3
Modular Crescent Cuber
Service Manual
Number: 73216
Issued: 10-27-2017
Revised: 5-30-2018
hoshizakiamerica.com

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WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizaki.com. No installation or service should be
undertaken until the technician has thoroughly read this Service Manual. Likewise,
the owner/manager should not proceed to operate the appliance until the installer
has instructed them on its proper operation. Failure to install, operate, 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. 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 qualied service technicians in the
installation, maintenance, and 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: [phone]
Fax: [phone]
E-mail: [email protected]
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.

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CONTENTS
Important Safety Information ................................................................................................. 6
I. Construction and Water/Refrigeration Circuit Diagram ....................................................... 8
A. KM Construction............................................................................................................ 8
1. Air-Cooled Models (SAJ/3)....................................................................................... 8
2. Water-Cooled Models (SWJ/3) ................................................................................ 9
3. Remote Models (KM-1301SRJ/3 and KM-1601SRJ/3) .......................................... 10
4. Remote Models (KM-1900SRJ/3, KM-2200SRJ3, KM-2600SRJ3)........................11
B. Bin Control .................................................................................................................. 12
1. Single Bin Control .................................................................................................. 12
2. Stacked Bin Control ............................................................................................... 12
C. Water/Refrigeration Circuit Diagram............................................................................ 13
1. Air-Cooled Models (SAJ/3)..................................................................................... 13
2. Water-Cooled Models (SWJ/3) .............................................................................. 14
3. Remote Models (SRJ/3) ........................................................................................ 15
II. Sequence of Operation and Service Diagnosis............................................................... 16
A. Sequence of Operation Flow Chart............................................................................. 16
1. Operation Flow Chart ............................................................................................ 16
2. Shutdown Flow Chart ............................................................................................ 17
3. Freeze-Time Correction Chart ............................................................................... 18
B. Service Diagnosis ....................................................................................................... 19
C. Freeze-Time Correction Cycle (90 min.) ..................................................................... 26
D. Control Board Check ................................................................................................... 28
E. Bin Control Check ....................................................................................................... 29
1. Bin Control Check .................................................................................................. 29
2. Bin Control Cleaning.............................................................................................. 30
F. Float Switch Check and Cleaning ................................................................................ 31
1. Float Switch Check ................................................................................................ 31
2. Float Switch Cleaning............................................................................................ 32
G. Thermistor Check........................................................................................................ 33
H. Control Switch ............................................................................................................. 33
I. Diagnostic Tables.......................................................................................................... 34
J. Freeze-Up Check List .................................................................................................. 38
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.

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III. Controls and Adjustments............................................................................................... 39
A. Control Board Layout .................................................................................................. 40
B. LED Lights and Audible Alarm Safeties....................................................................... 41
C. Settings and Adjustments............................................................................................ 42
1. Default Dip Switch Settings .................................................................................... 42
2. Harvest Time (S4 dip switch 1 & 2)........................................................................ 43
3. Pump-Out Time/Harvest Time During Pump-Out (S4 dip switch 3 & 4)................. 43
4. Pump-Out Frequency Control (S4 dip switch 5)..................................................... 44
5. Harvest Pump Time (Harvest Assist) (S4 dip switch 6) ......................................... 44
6. Harvest Pump Time (Harvest Assist)/Freeze-Time Correction (S4 dip switch 7) .. 45
7. Factory Use (S4 dip switch 8)................................................................................. 45
8. Freeze Timer (S4 dip switch 9 & 10) ...................................................................... 46
9. Float Switch Selector (S5 dip switch 1) ................................................................. 46
10. Rell Counter (S5 dip switch 2 and 3).................................................................. 46
IV. Refrigeration Circuit and Component Service Information.............................................. 48
A. Refrigeration Circuit Service Information .................................................................... 48
B. Component Service Information.................................................................................. 51
C. Water Regulating Valve Adjustment (water-cooled models) ........................................ 52
V. Maintenance .................................................................................................................... 53
VI. Preparing the Icemaker for Periods of Non-Use............................................................. 54
VII. Disposal......................................................................................................................... 56
VIII. Technical Information.................................................................................................... 57
A. Specication and Performance Data........................................................................... 57
1. KM-1301SAJ .......................................................................................................... 57
2. KM-1301SAJ3........................................................................................................ 58
3. KM-1301SWJ ........................................................................................................ 59
4. KM-1301SWJ3 ...................................................................................................... 60
5. KM-1301SRJ with URC-14F .................................................................................. 61
6. KM-1301SRJ3 with URC-14F ................................................................................ 62
7. KM-1601SAJ .......................................................................................................... 63
8. KM-1601SAJ3........................................................................................................ 64
9. KM-1601SWJ......................................................................................................... 65
10. KM-1601SWJ3..................................................................................................... 66
11. KM-1601SRJ with URC-22F................................................................................. 67
12. KM-1601SRJ3 with URC-22F.............................................................................. 68
13. KM-1900SAJ........................................................................................................ 69
14. KM-1900SAJ3...................................................................................................... 70
15. KM-1900SWJ ...................................................................................................... 71
16. KM-1900SWJ3 .................................................................................................... 72
17. KM-1900SRJ with URC-22F ................................................................................ 73
18. KM-1900SRJ3 with URC-22F...............................................................................74
19. KM-2200SWJ3 .................................................................................................... 75
20. KM-2200SRJ3 with URC-22F ............................................................................. 76
21. KM-2600SWJ3..................................................................................................... 77
22. KM-2600SRJ3 with URC-26F ............................................................................. 78

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B. Wiring Diagrams.......................................................................................................... 79
1. Single Phase Models ............................................................................................. 79
a) KM-1301S_J ..................................................................................................... 79
b) KM-1601S_J ..................................................................................................... 80
c) KM-1900S_J ..................................................................................................... 81
2. Three Phase Models.............................................................................................. 82
a) KM-1301S_J3 ................................................................................................... 82
b) KM-1601S_J3 ................................................................................................... 83
c) KM-1900_2200_2600S_J3 ............................................................................... 84

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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 qualied 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 damage.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuse, 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.
• To reduce the risk of electric shock, do not touch the control switch with damp
hands.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, serious injury, re, or damage.

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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 the appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or ammable substances near the
appliance. They might catch re.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Wire routing (conduit) and disconnect (if required) 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 damage.
• 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 Icemaker 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.

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I. Construction and Water/Refrigeration Circuit Diagram
A. KM Construction
1. Air-Cooled Models (SAJ/3)
Evaporator Assembly
Spray Tubes
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Box
Condenser
Check Valves
(refrigeration)
Control Box
Drier
Control Switch
Compressor
Cleaning Valve
Float Switch
Water Pump
Check Valve
(water)
Thermostatic Expansion Valves
Liquid Line Valve
Fan Motor
Fan Blade
Low-Side Service Valve
High-Side Service Valve
Model Shown: KM-1301SAJ3
High-Pressure
Switch
Transformer Box

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Evaporator Assembly
Spray Tubes
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Box
Water Regulating
Valve
Check Valves
(refrigeration)
Control Box
Liquid Line Valve
Drier
Control Switch
Compressor
Cleaning Valve
Float Switch
Water Pump
Check Valve
(water)
Thermostatic
Expansion Valves
Water-Cooled
Condenser
Low-Side Service Valve
High-Side Service Valve
2. Water-Cooled Models (SWJ/3)
Model Shown: KM-1301SWJ3
Transformer Box

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3. Remote Models (KM-1301SRJ/3 and KM-1601SRJ/3)
Evaporator Assembly
Spray Tubes
Inlet Water Valve
Water Supply Inlet
Hot Gas Valve
Junction Boxes
Receiver
Check Valves
(refrigeration)
Control Box
Liquid Line Valve
Drier
Compressor
Cleaning Valve
Float Switch
Water Pump
Check Valve
(water)
Thermostatic
Expansion Valves
Low-Side Service Valve
High-Side Service Valve
High-Side Liquid Service Valve
Model Shown: KM-1301SRJ
Transformer Box