SERVICE MANUAL
Stackable Crescent Cuber Models
HoshizakiHoshizaki America, Inc
Complete and detailed explanation of the problem
Phone 1-800-233-1940 770 Fax 1-800-843-1056
E-mail techsupport@hoshizaki.com HOSHIZAKI AMERICA, INC
618 Highway 74 South Peachtree City, GA
CONTENTS
C. Settings and Adjustments
1. Default Dip Switch Settings
a E and G Control Board without Harvest Pump Timer Operation
b G Control Board with Harvest Pump Timer Operation
23. KM-1900SRH with URC-21F
Important Safety Information
Indicates a hazardous situation which could result in death or
serious injury
Indicates a situation which could result in damage to the
WARNING, continued
Additional Warning for Remote Models
I. Construction and Water/Refrigeration Circuit Diagram
A. KM Construction
1. Air-Cooled Models SAH/3
Model Shown KM-1301SAH3
2. Water-Cooled Models SWH/3/-M
Model Shown KM-1301SWH3
3. Remote Models SRH/3
Note KM-2500SRH3 Includes Headmaster C.P.R Model Shown KM-1301SRH3
B. KMH Construction
1. Water-Cooled Models SWH/3
Model Shown KMH-2000SWH3
Model Shown KMH-2000SWH3
2. Remote Models SRH/3
Model Shown KMH-2000SRH3
Model Shown KMH-2000SRH3
Diagram
C. Water/Refrigeration Circuit
1. Air-Cooled Models SAH/3
Water Tank
Water-Cooled Models SWH/3/-M
Water Tank
Water Regulating Valve
Condenser
KM-2500SRH3
Condenser Unit with Headmaster
3a. Remote Models SRH/3 Except
Water Tank
Water
Tank
Freeze
Pump-Out
A. Sequence of Operation Flow Chart
II. Sequence of Operation and Service Diagnosis
E and G Control Board without Harvest Pump Timer Operation Flow Chart
Components Energized when the Control Switch is in the WASH Position
G Control Board with Harvest Pump Timer Operation Flow Chart
2. G Control Board with Harvest Pump Timer Operation
Components Energized when the Control Switch is in the WASH Position
B. Service Diagnosis
1. E and G Control Board without Harvest Pump Timer Diagnosis
d WRV Diagnosis Confirm WRV is not leaking by
For LLV check coil voltage and continuity
After 11th freeze cycle
9 Shutdown E and G Control Board
2. G Control Board with Harvest Pump Timer Diagnosis
50 sec. before harvest terminates, PM energizes. See step 5b below
d WRV Diagnosis Confirm WRV is not leaking by
R and neutral W, check PM capacitor and motor winding continuity
For LLV, check coil voltage and continuity
7 Pump-Out Cycle - LEDs 1, 3, and 2 are on 10/20 second pump-out. Timing of the first pump-out is determined by S4 dip switch 5 & 6. See the table below
9 Shutdown G Control Board
C. Control Board Check
D. Bin Control Check
E. Float Switch Check and Cleaning
1. Float Switch Check
2. Float Switch Cleaning
Vent Flush Shaft Float Switch Housing Float Retainer Rod Rubber Boot
and Hose
F. Thermistor Check
Thermistor Lead
Cable Tie
Foam Insulation
G. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
2. Freeze-Up
No Ice Production - Possible Cause
Freeze-Up - Possible Cause
Harvest Cycle
3. Low Ice Production
Freeze-Up - Possible Cause
Freeze Cycle
Low Ice Production - Possible Cause
Low Ice Production - Possible Cause
Long Freeze Cycle
III. Controls and Adjustments
A. Control Board Layout
E Control Board
1. E Control Board
E Control Board
G Control Board
2. G Control Board
G Control Board
Part Number 2A3792-01
B. LED Lights and Audible Alarm Safeties
1. E Control Board
2. G Control Board
C. Settings and Adjustments
1. Default Dip Switch Settings
a E and G Control Board without Harvest Pump Timer Operation
b G Control Board with Harvest Pump Timer Operation
c G Control Board S5 Dip Switch
S4 Dip Switch E and G Control Boards
S5 Dip Switch
3. Pump-Out Timer S4 dip switch 3
4. Pump-Out Frequency Control S4 dip switch 5
a Bin Control Selector E Control Board
b Harvest Pump Timer G Control Board
6. Factory Use S4 dip switch
7. Freeze Timer S4 dip switch 9
D. Control Switch
8. Float Switch Selector S5 dip switch 1 G Control Board
9. Refill Counter S5 dip switch 2 through 5 G Control Board
IV. Refrigeration Circuit and Component Service Information
A. Refrigeration Circuit Service Information
1. Refrigerant Recovery
2. Brazing
3. Evacuation and Recharge R-404A
4 Close the low-side valve and high-side valve on the gauge manifold
B. Component Service Information
Component
C. Water Regulating Valve Adjustment water-cooled models
V. Maintenance
VI. Preparing the Icemaker for Periods of Non-Use
1. Remove the water from the icemaker water supply line
2. Drain the water tank
6 Close the drain valves
VII. Disposal
A. Specification and Performance Data
VIII. Technical Information
1. KM-1301SAH
2. KM-1301SAH3
3. KM-1301SWH
1318
1323
1740
4. KM-1301SWH3
5. KM-1301SRH with URC-14F
6. KM-1301SRH3 with URC-14F
7. KM-1400SWH-M
8. KM-1400SWH3-M
9. KM-1601SAH
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1462
10. KM-1601SAH3
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1456
11. KM-1601SWH
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
12. KM-1601SWH3
13. KM-1601SRH with URC-21F Auxiliary Codes R-0, R-1, and some S-1
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
15. KM-1601SRH with URC-22F Auxiliary Codes S-2 and Later
16. KM-1601SRH3 with URC-21F Auxiliary Codes R-0, R-1, and some S-1
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
18. KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1530
19. KM-1900SAH
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
2480
20. KM-1900SAH3
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1859
21. KM-1900SWH
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1876
22. KM-1900SWH3
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1814
23. KM-1900SRH with URC-21F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
2630
24. KM-1900SRH with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1857
25. KM-1900SRH3 with URC-21F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1965
26. KM-1900SRH3 with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
27. KM-2100SWH3
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
2096
28. KM-2100SRH3 with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
3210
29. KM-2500SWH3
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
2408
30. KM-2500SRH3 with URC-23F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
3780
31. KMH-2000SWH
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1821
32. KMH-2000SWH3
33. KMH-2000SRH with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
1944
34. KMH-2000SRH3 with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
B. Wiring Diagrams
1. Diagrams without Harvest Pump Timer Relays E and G Control Boards
a KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH
KM-2500SH3, KMH-2000SH3
SwitchPressure-High
b KM-1601SWH3, KM-1601SRH3, KM-1900SH3, KM-2100SH3
384±22
2. Diagrams with Harvest Pump Timer Relays G Control Board
a KM-1301SH Auxiliary Code T-0, U-0
T-0, U-0
Auxiliary Code
b KM-1301SH3 Auxiliary Code T-0, U-0
c KM-1301SH Auxiliary Code U-1 and Later and KM-1601SAH
d KM-1301SH3 Auxiliary Code U-1 and Later and KM-1601SAH3
e KM-1400SWH-M
High-Pressure Switch
Control Transformer Output 10.5V at
Water-Cooled Model
High-Pressure Switch
f KM-1400SWH3-M
Control Transformer
Output 10.5V at