HoshizakiHoshizaki America, Inc
SERVICE MANUAL
Stackable Crescent Cuber Models
Phone 1-800-233-1940 770 Fax 1-800-843-1056
Complete and detailed explanation of the problem
E-mail techsupport@hoshizaki.com HOSHIZAKI AMERICA, INC
618 Highway 74 South Peachtree City, GA
CONTENTS
1. Default Dip Switch Settings
C. Settings and Adjustments
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
Indicates a hazardous situation which could result in death or
Important Safety Information
serious injury
Indicates a situation which could result in damage to the
Additional Warning for Remote Models
WARNING, continued
A. KM Construction
I. Construction and Water/Refrigeration Circuit Diagram
1. Air-Cooled Models SAH/3
Model Shown KM-1301SAH3
Model Shown KM-1301SWH3
2. Water-Cooled Models SWH/3/-M
Note KM-2500SRH3 Includes Headmaster C.P.R Model Shown KM-1301SRH3
3. Remote Models SRH/3
1. Water-Cooled Models SWH/3
B. KMH Construction
Model Shown KMH-2000SWH3
Model Shown KMH-2000SWH3
Model Shown KMH-2000SRH3
2. Remote Models SRH/3
Model Shown KMH-2000SRH3
C. Water/Refrigeration Circuit
Diagram
1. Air-Cooled Models SAH/3
Water Tank
Water Tank
Water-Cooled Models SWH/3/-M
Water Regulating Valve
Condenser
Condenser Unit with Headmaster
KM-2500SRH3
3a. Remote Models SRH/3 Except
Water Tank
Tank
Water
Freeze
Pump-Out
II. Sequence of Operation and Service Diagnosis
A. Sequence of Operation Flow Chart
E and G Control Board without Harvest Pump Timer Operation Flow Chart
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
d WRV Diagnosis Confirm WRV is not leaking by
50 sec. before harvest terminates, PM energizes. See step 5b below
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
1. Float Switch Check
E. Float Switch Check and Cleaning
and Hose
2. Float Switch Cleaning
Vent Flush Shaft Float Switch Housing Float Retainer Rod Rubber Boot
Thermistor Lead
F. Thermistor Check
Cable Tie
Foam Insulation
No Ice Production - Possible Cause
G. Diagnostic Tables
1. No Ice Production
No Ice Production - Possible Cause
2. Freeze-Up
Freeze-Up - Possible Cause
Harvest Cycle
Freeze-Up - Possible Cause
3. Low Ice Production
Freeze Cycle
Low Ice Production - Possible Cause
Long Freeze Cycle
Low Ice Production - Possible Cause
III. Controls and Adjustments
E Control Board
A. Control Board Layout
1. E Control Board
E Control Board
2. G Control Board
G Control Board
G Control Board
Part Number 2A3792-01
1. E Control Board
B. LED Lights and Audible Alarm Safeties
2. G Control Board
a E and G Control Board without Harvest Pump Timer Operation
C. Settings and Adjustments
1. Default Dip Switch Settings
c G Control Board S5 Dip Switch
b G Control Board with Harvest Pump Timer Operation
S4 Dip Switch E and G Control Boards
S5 Dip Switch
3. Pump-Out Timer S4 dip switch 3
a Bin Control Selector E Control Board
4. Pump-Out Frequency Control S4 dip switch 5
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
3. Evacuation and Recharge R-404A
2. Brazing
4 Close the low-side valve and high-side valve on the gauge manifold
Component
B. Component Service Information
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
1318
3. KM-1301SWH
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
SPECIFICATION SHEET
9. KM-1601SAH
PERFORMANCE DATA SHEET
1462
SPECIFICATION SHEET
10. KM-1601SAH3
PERFORMANCE DATA 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
PERFORMANCE DATA SHEET
SPECIFICATION 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
PERFORMANCE DATA SHEET
SPECIFICATION SHEET
SPECIFICATION SHEET
18. KM-1601SRH3 with URC-22F Auxiliary Codes S-2 and Later
PERFORMANCE DATA SHEET
1530
SPECIFICATION SHEET
19. KM-1900SAH
PERFORMANCE DATA SHEET
2480
SPECIFICATION SHEET
20. KM-1900SAH3
PERFORMANCE DATA SHEET
1859
SPECIFICATION SHEET
21. KM-1900SWH
PERFORMANCE DATA SHEET
1876
SPECIFICATION SHEET
22. KM-1900SWH3
PERFORMANCE DATA SHEET
1814
SPECIFICATION SHEET
23. KM-1900SRH with URC-21F
PERFORMANCE DATA SHEET
2630
SPECIFICATION SHEET
24. KM-1900SRH with URC-22F
PERFORMANCE DATA SHEET
1857
SPECIFICATION SHEET
25. KM-1900SRH3 with URC-21F
PERFORMANCE DATA SHEET
1965
PERFORMANCE DATA SHEET
26. KM-1900SRH3 with URC-22F
SPECIFICATION SHEET
SPECIFICATION SHEET
27. KM-2100SWH3
PERFORMANCE DATA SHEET
2096
SPECIFICATION SHEET
28. KM-2100SRH3 with URC-22F
PERFORMANCE DATA SHEET
3210
SPECIFICATION SHEET
29. KM-2500SWH3
PERFORMANCE DATA SHEET
2408
SPECIFICATION SHEET
30. KM-2500SRH3 with URC-23F
PERFORMANCE DATA SHEET
3780
SPECIFICATION SHEET
31. KMH-2000SWH
PERFORMANCE DATA SHEET
1821
32. KMH-2000SWH3
SPECIFICATION SHEET
33. KMH-2000SRH with URC-22F
PERFORMANCE DATA 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
SwitchPressure-High
KM-2500SH3, KMH-2000SH3
b KM-1601SWH3, KM-1601SRH3, KM-1900SH3, KM-2100SH3
384±22
a KM-1301SH Auxiliary Code T-0, U-0
2. Diagrams with Harvest Pump Timer Relays G Control Board
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
High-Pressure Switch
e KM-1400SWH-M
Control Transformer Output 10.5V at
Water-Cooled Model
f KM-1400SWH3-M
High-Pressure Switch
Control Transformer
Output 10.5V at