Hoshizaki DKM-500BAH Service Manual page 4

III. Technical Information ...................................................................................................... 19
A. Water Circuit and Refrigeration Circuit........................................................................ 19
B. Wiring Diagram............................................................................................................ 20
C. Timing Chart ............................................................................................................... 21
D. Performance Data ....................................................................................................... 23
IV. Service Diagnosis ........................................................................................................... 24
A. 10-Minute Diagnostic Procedure ................................................................................ 24
B. Diagnostic Charts........................................................................................................ 25
1. Ice Making ............................................................................................................. 25
a) No Ice Production.............................................................................................. 25
b) Evaporator is Frozen Up.................................................................................... 28
c) Low Ice Production ............................................................................................ 29
d) Abnormal Ice ..................................................................................................... 29
e) Other ................................................................................................................. 30
2. Dispensing............................................................................................................. 30
V. Removal and Replacement of Components .................................................................... 32
A. Service for Refrigerant Lines ...................................................................................... 32
1. Refrigerant Recovery............................................................................................. 32
2. Evacuation and Recharge (R-404A)...................................................................... 32
B. Brazing ........................................................................................................................ 33
C. Removal and Replacement of Compressor ................................................................ 33
D. Removal and Replacement of Drier ............................................................................ 34
E. Removal and Replacement of Expansion Valve.......................................................... 35
F. Removal and Replacement of Hot Gas Valve .............................................................. 35
G. Removal and Replacement of Evaporator .................................................................. 36
H. Removal and Replacement of Condenser .................................................................. 37
I. Removal and Replacement of Thermistor .................................................................... 38
J. Removal and Replacement of Fan Motor .................................................................... 38
K. Removal and Replacement of Inlet Water Valve ......................................................... 39
L. Removal and Replacement of Pump Motor................................................................. 39
M. Removal and Replacement of Spray Tubes................................................................ 40
N. Removal and Replacement of Gear Motor ................................................................ 40
O. Removal and Replacement of Dispense Switch ......................................................... 41
P. Removal and Replacement of Solenoid ...................................................................... 41
VI. Cleaning and Maintenance Instructions ......................................................................... 42
A. Cleaning Instructions .................................................................................................. 42
1. Cleaning Procedure - Icemaker ............................................................................ 42
2. Sanitizing Procedure - Icemaker........................................................................... 43
3. Cleaning Procedure - Bin...................................................................................... 44
4. Sanitizing Procedure - Bin .................................................................................... 44
B. Maintenance Instructions ............................................................................................ 45
1. Exterior Panels ...................................................................................................... 45
2. Air Filters ............................................................................................................... 45
3. Condenser ............................................................................................................. 45
C. Preparing the Icemaker for Long Storage ................................................................... 45
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