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Hoshizaki
KM-630MWH, KM-630MAH
service manual
B2 KM-630MRH with auxiliary codes M-2 and after
Models:
KM-630MAH
KM-630MRH
KM-630MWH
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67 pages
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Specs
Wiring Diagrams
Maintenance
Problem Possible Cause Remedy
Cleaning Procedure
Controls and Adjustments
Setting Time
Refrigerant Recovery
Proximity Switch
Page 34
Image 34
[b2]
KM-630MRH
(with auxiliary codes
M-2
and after)
34
Page 33
Page 35
Page 34
Image 34
Page 33
Page 35
Contents
KM-630MAH KM-630MWH KM-630MRH
Hoshizaki AMERICA, INC
Contents
Maintenance
Specifications KM-630MAH
Water TEMP. F
2a. KM-630MWH Serial #L00001D M20270B
2b. KM-630MWH Serial #M20301E
KM-630MRH
Condenser Unit
URC-6F
Specifications
II. General Information Construction
KM-630MAH
KM-630MWH
KM-630MRH
SOLID-STATE Control
Features of Control Products E Controller Board
Controller Board
Controller Board
Page
Harvest Cycle
Beep every 3 sec. = High Evaporator Temperature 127 F
Minute Fill Cycle
Freeze Cycle
Control Products HOS-001A Board
Sequence 1st Cycle
Important Water Valve opening is limited to 6 minutes
2nd Cycle and after with pump drain
2nd Cycle and after with no pump drain
Controls and Adjustments
For Models with Thermostat
Page
Setting Time
Models with Thermostat
Models with Mechanical BIN Control
Checking the Controller Board
Mechanical BIN Control
Proximity Switch
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
Performance Data
157
B1 KM-630MWH Serial #L00001D M20270B
Pressure Drop of Cooling Water Line
B2 KM-630MWH Serial #M20301E
603
IV. Service Diagnosis 1. no ICE Production
Problem Possible Cause Remedy
Controller Board
Problem Possible Cause Remedy
Evaporator is Frozen UP
Thermistor
Abnormal ICE
LOW ICE Production
Others
Refrigerant Recovery
Removal and Replacement of Components
Service for Refrigerant Lines
Evacuation and Recharge R-404A
Brazing
Removal and Replacement of Compressor Important
Page
Removal and Replacement of Drier
Removal and Replacement of Expansion Valve
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 Water Valve
Removal and Replacement of Pump Motor
Removal and Replacement of Spray Tubes
VI. Cleaning and Maintenance Instructions
Preparing the Icemaker for Long Storage
Page
Cleaning and Sanitizing Procedures
Cleaning Procedure
Page
Sanitizing Procedure
Maintenance
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Contents
