Hoshizaki KMD-270AWA Service Manual page 3

IV. SERVICE DIAGNOSIS ------------------------------------------------------------------------------27
1. 10-MINUTE DIAGNOSTIC PROCEDURE -----------------------------------------------------27
2. DIAGNOSTIC CHARTS-----------------------------------------------------------------------------29
[a] NO ICE PRODUCTION ------------------------------------------------------------------------29
[b] EVAPORATOR IS FROZEN UP -------------------------------------------------------------32
[c] LOW ICE PRODUCTION ----------------------------------------------------------------------33
[d] ABNORMAL ICE---------------------------------------------------------------------------------33
[e] OTHER ---------------------------------------------------------------------------------------------34
V. REMOVAL AND REPLACEMENT-----------------------------------------------------------------35
1. SERVICE FOR REFRIGERANT LINES --------------------------------------------------------35
[a] SERVICE INFORMATION ---------------------------------------------------------------------35
[b] REFRIGERANT RECOVERY-----------------------------------------------------------------36
[c] EVACUATION AND RECHARGE------------------------------------------------------------36
2. BRAZING -----------------------------------------------------------------------------------------------37
3. COMPRESSOR ---------------------------------------------------------------------------------------37
4. DRIER ---------------------------------------------------------------------------------------------------38
5. HOT GAS VALVE ------------------------------------------------------------------------------------39
6. EXPANSION VALVE --------------------------------------------------------------------------------40
7. EVAPORATOR----------------------------------------------------------------------------------------41
8. WATER REGULATING VALVE - WATER-COOLED MODEL ONLY -------------------42
9. ADJUSTMENT OF WATER REGULATING VALVE - WATER-COOLED
MODEL ONLY -----------------------------------------------------------------------------------------43
10. FAN MOTOR ------------------------------------------------------------------------------------------43
11. PUMP MOTOR----------------------------------------------------------------------------------------44
12. WATER VALVE ---------------------------------------------------------------------------------------45
13. DRAIN VALVE ----------------------------------------------------------------------------------------45
14. WATER TANK-----------------------------------------------------------------------------------------46
15. FLOAT SWITCH --------------------------------------------------------------------------------------47
16. BIN CONTROL SWITCH ---------------------------------------------------------------------------48
17. THERMISTOR ----------------------------------------------------------------------------------------49
18. CONTROL BOX --------------------------------------------------------------------------------------50
[a] CONTROL & SERVICE SWITCH------------------------------------------------------------52
[b] FUSE------------------------------------------------------------------------------------------------52
[c] FUSE HOLDER-----------------------------------------------------------------------------------52
[d] CONTROL BOARD------------------------------------------------------------------------------52
[e] MAGNETIC CONTACTOR --------------------------------------------------------------------52
[f] CONTROL BOARD TRANSFORMER-------------------------------------------------------52
[g] STARTER------------------------------------------------------------------------------------------53
[h] RUN CAPACITOR -------------------------------------------------------------------------------53
[i] START CAPACITOR-----------------------------------------------------------------------------53
[j] CAPACITOR FOR PUMP MOTOR-----------------------------------------------------------53
19. SPRAY TUBE, WATER SUPPLY TUBE, SPRAY GUIDE ---------------------------------53
VI. CLEANING AND MAINTENANCE INSTRUCTIONS ----------------------------------------55
1. CLEANING ---------------------------------------------------------------------------------------------55
[a] CLEANING PROCEDURE---------------------------------------------------------------------55
[b] SANITIZING PROCEDURE -------------------------------------------------------------------58
2. MAINTENANCE --------------------------------------------------------------------------------------58
[a] STAINLESS STEEL EXTERIOR -------------------------------------------------------------59
[b] STORAGE BIN AND SCOOP-----------------------------------------------------------------59
[c] AIR FILTER (AIR-COOLED MODEL ONLY) ----------------------------------------------59
[d] CONDENSER (AIR-COOLED MODEL ONLY) -------------------------------------------59
3. PREPARING THE ICEMAKER FOR LONG STORAGE------------------------------------59
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