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D. Bin Control .................................................................................................................. 22
E. Float Switch ................................................................................................................. 22
F. Thermistor .................................................................................................................... 22
G. Control Switch ............................................................................................................. 22
III. Technical Information ...................................................................................................... 23
A. Water Circuit and Refrigeration Circuit ........................................................................ 23
1. KM-2500SWH3 (water-cooled) .............................................................................. 23
2. KM-2500SRH3 (remote air-cooled) ....................................................................... 24
B. Wiring Diagrams .......................................................................................................... 25
1. KM-2500SWH3 (water-cooled), KM-2500SRH3 (remote air-cooled) ..................... 25
C. Performance Data ....................................................................................................... 26
1. KM-2500SWH3 (water-cooled) .............................................................................. 26
2. KM-2500SRH3 (remote air-cooled) ....................................................................... 27
IV. Service Diagnosis ........................................................................................................... 28
A. Diagnostic Procedure ................................................................................................. 28
B. Control Board Check ................................................................................................... 31
C. Bin Control Check ....................................................................................................... 32
D. Float Switch Check and Cleaning ............................................................................... 32
E. Thermistor Check ........................................................................................................ 34
F. Diagnostic Charts ........................................................................................................ 35
V. Removal and Replacement of Components .................................................................... 43
A. Service for Refrigerant Lines ....................................................................................... 43
1. Refrigerant Recovery ............................................................................................. 43
2. Brazing .................................................................................................................. 44
3. Evacuation and Recharge (R-404A) ...................................................................... 44
B. Removal and Replacement of Compressor ................................................................. 45
C. Removal and Replacement of Expansion Valve .......................................................... 46
D. Removal and Replacement of Hot Gas Valve or Liquid Line Valve ............................. 47
E. Removal and Replacement of Evaporator ................................................................... 48
F. Removal and Replacement of Water-Cooled Condenser ............................................. 49
G. Removal and Replacement of Remote Air-Cooled Condenser ................................... 50
H. Removal and Replacement of Water Regulating Valve (water-cooled model) ............. 51
I. Adjustment of Water Regulating Valve - Water-Cooled Model ...................................... 52
J. Removal and Replacement of Headmaster (Condensing Pressure Regulator - C.P.R.) -
Remote Air-Cooled Model ......................................................................................... 52
K. Removal and Replacement of Thermistor ................................................................... 53
L. Removal and Replacement of Fan Motor – Remote Air-Cooled Model........................ 54
M. Removal and Replacement of Inlet Water Valve ......................................................... 54
N. Removal and Replacement of Pump Motor ................................................................ 55
O. Removal and Replacement of Control Board .............................................................. 56
VI. Cleaning and Maintenance ............................................................................................. 57
A. Cleaning and Sanitizing Instructions ........................................................................... 57
1. Cleaning Procedure ................................................................................................ 58
2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 59
B. Maintenance ................................................................................................................ 60
C. Preparing the Icemaker for Long Storage ................................................................... 60