HoshizakiHoshizaki America, Inc
SERVICE MANUAL
Stackable Crescent Cuber Models
E-mail techsupport@hoshizaki.com HOSHIZAKI AMERICA, INC
Complete and detailed explanation of the problem
Phone 1-800-233-1940 770 Fax 1-800-843-1056
618 Highway 74 South Peachtree City, GA
CONTENTS
a E and G Control Board without Harvest Pump Timer Operation
C. Settings and Adjustments
1. Default Dip Switch Settings
b G Control Board with Harvest Pump Timer Operation
23. KM-1900SRH with URC-21F
serious injury
Important Safety Information
Indicates a hazardous situation which could result in death or
Indicates a situation which could result in damage to the
WARNING, continued
Additional Warning for Remote Models
1. Air-Cooled Models SAH/3
I. Construction and Water/Refrigeration Circuit Diagram
A. KM Construction
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
Model Shown KMH-2000SWH3
B. KMH Construction
1. Water-Cooled Models SWH/3
Model Shown KMH-2000SWH3
Model Shown KMH-2000SRH3
2. Remote Models SRH/3
Model Shown KMH-2000SRH3
1. Air-Cooled Models SAH/3
Diagram
C. Water/Refrigeration Circuit
Water Tank
Water Regulating Valve
Water-Cooled Models SWH/3/-M
Water Tank
Condenser
3a. Remote Models SRH/3 Except
KM-2500SRH3
Condenser Unit with Headmaster
Water Tank
Freeze
Water
Tank
Pump-Out
E and G Control Board without Harvest Pump Timer Operation Flow Chart
A. Sequence of Operation Flow Chart
II. Sequence of Operation and Service Diagnosis
Components Energized when the Control Switch is in the WASH Position
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
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
and Hose
2. Float Switch Cleaning
Vent Flush Shaft Float Switch Housing Float Retainer Rod Rubber Boot
Cable Tie
F. Thermistor Check
Thermistor Lead
Foam Insulation
No Ice Production - Possible Cause
G. Diagnostic Tables
1. No Ice Production
Freeze-Up - Possible Cause
2. Freeze-Up
No Ice Production - Possible Cause
Harvest Cycle
Freeze Cycle
3. Low Ice Production
Freeze-Up - Possible Cause
Low Ice Production - Possible Cause
Low Ice Production - Possible Cause
Long Freeze Cycle
III. Controls and Adjustments
1. E Control Board
A. Control Board Layout
E Control Board
E Control Board
G Control Board
G Control Board
2. G Control Board
Part Number 2A3792-01
B. LED Lights and Audible Alarm Safeties
1. E Control Board
2. G Control Board
a E and G Control Board without Harvest Pump Timer Operation
C. Settings and Adjustments
1. Default Dip Switch Settings
S4 Dip Switch E and G Control Boards
b G Control Board with Harvest Pump Timer Operation
c G Control Board S5 Dip Switch
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
7. Freeze Timer S4 dip switch 9
b Harvest Pump Timer G Control Board
6. Factory Use S4 dip switch
9. Refill Counter S5 dip switch 2 through 5 G Control Board
D. Control Switch
8. Float Switch Selector S5 dip switch 1 G Control Board
1. Refrigerant Recovery
IV. Refrigeration Circuit and Component Service Information
A. Refrigeration Circuit Service Information
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
2. Drain the water tank
VI. Preparing the Icemaker for Periods of Non-Use
1. Remove the water from the icemaker water supply line
6 Close the drain valves
VII. Disposal
1. KM-1301SAH
A. Specification and Performance Data
VIII. Technical Information
2. KM-1301SAH3
1323
3. KM-1301SWH
1318
1740
4. KM-1301SWH3
5. KM-1301SRH with URC-14F
6. KM-1301SRH3 with URC-14F
7. KM-1400SWH-M
8. KM-1400SWH3-M
PERFORMANCE DATA SHEET
9. KM-1601SAH
SPECIFICATION SHEET
1462
PERFORMANCE DATA SHEET
10. KM-1601SAH3
SPECIFICATION SHEET
1456
PERFORMANCE DATA SHEET
11. KM-1601SWH
SPECIFICATION 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
PERFORMANCE DATA SHEET
16. KM-1601SRH3 with URC-21F Auxiliary Codes R-0, R-1, and some S-1
SPECIFICATION SHEET
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
PERFORMANCE DATA SHEET
18. KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later
SPECIFICATION SHEET
1530
PERFORMANCE DATA SHEET
19. KM-1900SAH
SPECIFICATION SHEET
2480
PERFORMANCE DATA SHEET
20. KM-1900SAH3
SPECIFICATION SHEET
1859
PERFORMANCE DATA SHEET
21. KM-1900SWH
SPECIFICATION SHEET
1876
PERFORMANCE DATA SHEET
22. KM-1900SWH3
SPECIFICATION SHEET
1814
PERFORMANCE DATA SHEET
23. KM-1900SRH with URC-21F
SPECIFICATION SHEET
2630
PERFORMANCE DATA SHEET
24. KM-1900SRH with URC-22F
SPECIFICATION SHEET
1857
PERFORMANCE DATA SHEET
25. KM-1900SRH3 with URC-21F
SPECIFICATION SHEET
1965
PERFORMANCE DATA SHEET
26. KM-1900SRH3 with URC-22F
SPECIFICATION SHEET
PERFORMANCE DATA SHEET
27. KM-2100SWH3
SPECIFICATION SHEET
2096
PERFORMANCE DATA SHEET
28. KM-2100SRH3 with URC-22F
SPECIFICATION SHEET
3210
PERFORMANCE DATA SHEET
29. KM-2500SWH3
SPECIFICATION SHEET
2408
PERFORMANCE DATA SHEET
30. KM-2500SRH3 with URC-23F
SPECIFICATION SHEET
3780
PERFORMANCE DATA SHEET
31. KMH-2000SWH
SPECIFICATION SHEET
1821
32. KMH-2000SWH3
PERFORMANCE DATA SHEET
33. KMH-2000SRH with URC-22F
SPECIFICATION SHEET
1944
PERFORMANCE DATA SHEET
34. KMH-2000SRH3 with URC-22F
SPECIFICATION SHEET
a KM-1601SWH, KM-1601SRH, KM-1900SH, KMH-2000SH
B. Wiring Diagrams
1. Diagrams without Harvest Pump Timer Relays E and G Control Boards
b KM-1601SWH3, KM-1601SRH3, KM-1900SH3, KM-2100SH3
KM-2500SH3, KMH-2000SH3
SwitchPressure-High
384±22
T-0, U-0
2. Diagrams with Harvest Pump Timer Relays G Control Board
a KM-1301SH Auxiliary Code 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
Control Transformer Output 10.5V at
e KM-1400SWH-M
High-Pressure Switch
Water-Cooled Model
Control Transformer
High-Pressure Switch
f KM-1400SWH3-M
Output 10.5V at