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III. Technical Information ...................................................................................................... 23
A. Water Circuit and Refrigeration Circuit ........................................................................ 23
1. KM-501MAH (air-cooled) .......................................................................................
23
2. KM-501MWH (water-cooled) ................................................................................. 24
3. KM-501MRH (remote air-cooled) .......................................................................... 25
B. Wiring Diagrams .......................................................................................................... 26
1. KM-501MAH (air-cooled) and KM-501MWH (water-cooled) .................................
26
2. KM-501MRH (remote air-cooled) ..........................................................................
27
C. Timing Chart ............................................................................................................... 28
D. Performance Data ....................................................................................................... 30
1. KM-501MAH (air-cooled) ....................................................................................... 30
2. KM-501MWH (water-cooled) .................................................................................
31
3. KM-501MRH (remote air-cooled) ..........................................................................
32
IV. Service Diagnosis ........................................................................................................... 33
A. 10-Minute KM Diagnostic Procedure ......................................................................... 33
B. Diagnostic Charts ........................................................................................................ 34
1. No Ice Production .................................................................................................. 34
2. Evaporator is Frozen Up ........................................................................................ 38
3. Low Ice Production ................................................................................................ 39
4. Abnormal Ice ......................................................................................................... 39
5. Other ...................................................................................................................... 39
V. Removal and Replacement of Components .................................................................... 41
A. Service for Refrigerant Lines ...................................................................................... 41
1. Refrigerant Recovery ............................................................................................. 41
2. Evacuation and Recharge (R-404A) ...................................................................... 41
B. Brazing ........................................................................................................................ 42
C. Removal and Replacement of Compressor ................................................................ 42
D. Removal and Replacement of Drier ............................................................................ 43
E. Removal and Replacement of Expansion Valve .......................................................... 44
F. Removal and Replacement of Hot Gas Valve and Line Valve ..................................... 44
G. Removal and Replacement of Evaporator .................................................................. 45
H. Removal and Replacement of Water Regulating Valve - Water Cooled Model Only ... 46
I. Adjustment of Water Regulating Valve - Water-Cooled Model Only ............................. 46
J. Removal and Replacement of Headmaster (Condensing Pressure Regulator - C.P.R.)
- Remote Air-Cooled Model Only .............................................................................. 47
K. Removal and Replacement of Thermistor ................................................................... 48
L. Removal and Replacement of Fan Motor .................................................................... 49
M. Removal and Replacement of Inlet Water Valve ......................................................... 49
N. Removal and Replacement of Pump Motor ................................................................ 49
O. Removal and Replacement of Spray Tubes ................................................................ 50
VI. Cleaning and Maintenance Instructions ......................................................................... 51
A. Cleaning and Sanitizing Procedures ........................................................................... 51
1. Cleaning Procedure ...............................................................................................
52
2. Sanitizing Procedure - Following Cleaning Procedure .......................................... 53
B. Maintenance ................................................................................................................ 53
C. Preparing the Icemaker for Long Storage ................................................................... 54