Hoshizaki KM-515MAH Service Manual page 4

III. Technical Information ...................................................................................................... 25
A. Water Circuit and Refrigeration Circuit ........................................................................ 25
1. KM-515MAH (air-cooled) ....................................................................................... 25
2. KM-515MWH (water-cooled) ................................................................................. 26
3. KM-515MRH (remote air-cooled) .......................................................................... 27
B. Wiring Diagrams .......................................................................................................... 28
1. KM-515MAH (air-cooled) and KM-515MWH (water-cooled) ................................. 28
2. KM-515MRH (remote air-cooled) .......................................................................... 29
C. Performance Data ....................................................................................................... 30
1. KM-515MAH (air-cooled) ....................................................................................... 30
2. KM-515MWH (water-cooled) ................................................................................. 31
3. KM-515MRH (remote air-cooled) .......................................................................... 32
IV. Service Diagnosis ........................................................................................................... 33
A. 10-Minute KM Diagnostic Procedure ......................................................................... 33
B. Diagnostic Charts ........................................................................................................ 35
1. No Ice Production .................................................................................................. 35
2. Evaporator is Frozen Up ........................................................................................ 38
3. Low Ice Production ................................................................................................ 40
4. Abnormal Ice ......................................................................................................... 40
5. Other ...................................................................................................................... 41
V. Removal and Replacement of Components .................................................................... 42
A. Service for Refrigerant Lines ...................................................................................... 42
1. Refrigerant Recovery ............................................................................................. 42
2. Brazing .................................................................................................................. 42
3. Evacuation and Recharge (R-404A) ...................................................................... 43
B. Removal and Replacement of Compressor ................................................................ 44
C. Removal and Replacement of Expansion Valve ......................................................... 45
D. Removal and Replacement of Hot Gas Valve or Line Valve ....................................... 46
E. Removal and Replacement of Evaporator .................................................................. 47
F. Removal and Replacement of Water Regulating Valve -Water-Cooled Model Only .... 47
G. Adjustment of Water Regulating Valve - Water-Cooled Model Only ........................... 48
H. Removal and Replacement of Headmaster (Condensing Pressure Regulator - C.P.R.)
- Remote Air-Cooled Model Only .............................................................................. 49
I. Removal and Replacement of Thermistor .................................................................... 50
J. Removal and Replacement of Fan Motor .................................................................... 51
K. Removal and Replacement of Inlet Water Valve ......................................................... 51
L. Removal and Replacement of Pump Motor ................................................................. 52
VI. Cleaning and Maintenance ............................................................................................ 53
A. Cleaning and Sanitizing Instructions ........................................................................... 53
1. Cleaning Procedure ............................................................................................... 54
2. Sanitizing Procedure - Following Cleaning Procedure .......................................... 55
B. Maintenance ................................................................................................................ 56
C. Preparing the Icemaker for Long Storage ................................................................... 56
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