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Ice Maker
Hoshizaki
KM-630MWH, KM-630MAH
service manual
B1 KM-630MRH with auxiliary codes L-0, M-0, M-1
Models:
KM-630MAH
KM-630MRH
KM-630MWH
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67 pages
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Specification
Wiring Diagrams
Maintenance
Problem Possible Cause Remedy
Cleaning Procedure
Controls and Adjustments
Setting Time
Refrigerant Recovery
Proximity Switch
Page 33
Image 33
[b1]
KM-630MRH
(with auxiliary codes
L-0,
M-0,
M-1)
Note: Pressure Switch
Cut-out
412
+ 21
PSIG
- 0
Cut-in
327 ± 21
PSIG
33
U1GMA0179608
Page 32
Page 34
Page 33
Image 33
Page 32
Page 34
Contents
KM-630MAH KM-630MWH KM-630MRH
Hoshizaki AMERICA, INC
Contents
Maintenance
Water TEMP. F
Specifications KM-630MAH
2a. KM-630MWH Serial #L00001D M20270B
2b. KM-630MWH Serial #M20301E
KM-630MRH
URC-6F
Condenser Unit
Specifications
KM-630MAH
II. General Information Construction
KM-630MWH
KM-630MRH
Controller Board
Features of Control Products E Controller Board
SOLID-STATE Control
Controller Board
Page
Minute Fill Cycle
Beep every 3 sec. = High Evaporator Temperature 127 F
Harvest Cycle
Freeze Cycle
Control Products HOS-001A Board
Important Water Valve opening is limited to 6 minutes
Sequence 1st Cycle
2nd Cycle and after with pump drain
2nd Cycle and after with no pump drain
For Models with Thermostat
Controls and Adjustments
Page
Setting Time
Models with Thermostat
Checking the Controller Board
Models with Mechanical BIN Control
Proximity Switch
Mechanical BIN Control
Explanation of Operation
Troubleshooting Mechanical BIN Control only
KM-630MAH
KM-630MWH
KM-630MRH
Wiring Diagrams
Page
B1 KM-630MRH with auxiliary codes L-0, M-0, M-1
B2 KM-630MRH with auxiliary codes M-2 and after
Timing Chart
Page
157
Performance Data
Pressure Drop of Cooling Water Line
B1 KM-630MWH Serial #L00001D M20270B
B2 KM-630MWH Serial #M20301E
603
Problem Possible Cause Remedy
IV. Service Diagnosis 1. no ICE Production
Controller Board
Problem Possible Cause Remedy
Thermistor
Evaporator is Frozen UP
LOW ICE Production
Abnormal ICE
Others
Service for Refrigerant Lines
Removal and Replacement of Components
Refrigerant Recovery
Evacuation and Recharge R-404A
Brazing
Removal and Replacement of Compressor Important
Page
Removal and Replacement of Expansion Valve
Removal and Replacement of Drier
Removal and Replacement of HOT GAS Valve and Line Valve
Page
Removal and Replacement of Evaporator Important
Page
Adjustment of Water Regulating Valve WATER-COOLED Model only
Page
Removal and Replacement of Thermistor Caution
Removal and Replacement of FAN Motor
Removal and Replacement of Pump Motor
Removal and Replacement of Water Valve
Removal and Replacement of Spray Tubes
Preparing the Icemaker for Long Storage
VI. Cleaning and Maintenance Instructions
Page
Cleaning and Sanitizing Procedures
Cleaning Procedure
Page
Sanitizing Procedure
Maintenance
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Contents
