Hoshizaki KML User Manual
NO.:
ISSUED:
REVISED:
73085
AUG. 18, 1999
JAN. 13, 2004
HOSHIZAKI
MODULAR CRESCENT CUBER
MODELS
KML “F” SERIES
KML “H” SERIES
SERVICE MANUAL
IMPORTANT
Only qualified service technicians should attempt to service or maintain this icemaker.
No service or maintenance should be undertaken until the technician has thoroughly
read this Service Manual.
HOSHIZAKI provides this manual primarily to assist qualified service technicians in the
service and maintenance of the icemaker.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call or write to the HOSHIZAKI Technical Support Department for
assistance.
HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City , GA 30269
Attn: HOSHIZAKI T echnical Support Department
Phone: 1-800-233-1940 T echnical Service
(770) 487-2331
Fax: (770) 487-3360
NOTE: T o expedite assistance, all correspondence/communication MUST include the following
information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem
2
• Please review this manual. It should be read carefully before the icemaker is serviced
or maintenance operations performed. Only qualified service technicians should service
and maintain the icemaker. This manual should be made available to the technician
prior to service or maintenance.
CONTENTS
PAGE
I. SPECIFICATIONS.........................................................................................................................6
1. KML-250MAH (Air-cooled) .................................................................................................... 6
2. KML-250MWH (Water-cooled) ............................................................................................. 7
3. KML-350MAF (Air-cooled) ....................................................................................................8
KML-350MWF (Water-cooled) .............................................................................................. 9
4.
5. KML-350MAH (Air-cooled) ..................................................................................................10
6. KML-350MWH (Water-cooled; Serial #L00001J through M20060C) .................................11
7.
KML-350MWH (Beginning Serial #M30061E) ....................................................................12
8. KML-450MAF (Air-cooled) ..................................................................................................13
KML-450MWF (Water-cooled) ............................................................................................ 14
9.
10. KML-450MAH (Air-cooled) ..................................................................................................15
11. KML-450MWH (Water-cooled; Serial #L00001D through M10530B).................................16
12. KML-450MWH (Beginning Serial #M20531D) ....................................................................17
13. KML-600MAF (Air-cooled) ..................................................................................................18
14.
KML-600MWF (Water-cooled)............................................................................................ 19
15.
KML-600MRF (Remote air-cooled) ....................................................................................20
16. KML-600MAH (Air-cooled) ..................................................................................................21
17.
KML-600MWH (Water-cooled; Serial #L00001D through M10115C) ..................................22
18. KML-600MWH (Water-cooled; Beginning Serial #M10121E)..............................................23
19.
KML-600MRH (Remote air-cooled) .....................................................................................24
20.
CONDENSER UNIT, URC-7F .............................................................................................25
II. GENERAL INFORMATION .........................................................................................................27
1. CONSTRUCTION................................................................................................................27
[a] KML-250MAH, KML-350MAF, KML-350MAH, KML-450MAF, KML-450MAH....................27
[b]
KML-250MWH, KML-350MWF, KML-350MWH, KML-450MWF, KML-450MWH .................
[c] KML-600MAF, KML-600MAH ..........................................................................................29
[d] KML-600MWF, KML-600MWH .......................................................................................30
[e] KML-600MRF, KML-600MRH .........................................................................................31
2. CONTROLLER BOARD .......................................................................................................32
[a] SOLID-STATE CONTROL.............................................................................................32
[b] CONTROLLER BOARD ................................................................................................ 32
[c] SEQUENCE................................................................................................................... 36
[d] CONTROLS AND ADJUSTMENTS ...............................................................................39
[e] CHECKING CONTROLLER BOARD ...........................................................................43
3. SWITCHES ..........................................................................................................................44
4. MECHANICAL BIN CONTROL ..............................................................................................45
PROXIMITY SWITCH.....................................................................................................45
[a]
[b] EXPLANATION OF OPERATION .................................................................................46
[c]
TROUBLESHOOTING ..................................................................................................46
28
3
III. TECHNICAL INFORMATION........................................................................................................47
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT..................................................................47
[a] AIR-COOLED MODELS ...................................................................................................47
[b] WATER-COOLED MODELS ............................................................................................ 48
[c] REMOTE AIR-COOLED MODELS...................................................................................49
2. WIRING DIAGRAMS ................................................................................................................50
[a] KML-250MAH (Beginning Serial #L00001E, ending Serial #M10460F);.................................
KML-250MWH (Beginning Serial #L10001K, ending Serial #M10090D) ...........................50
[b] KML-250MAH (Beginning Serial #M20461G); ........................................................................
KML-250MWH (Beginning Serial #M20091G) ...................................................................51
[c]
KML-350MAF, KML-350MWF............................................................................................52
[d] KML-350MAH (Beginning Serial #L00001L, ending Serial #M10290F);.................................
KML-350MWH (Beginning Serial #L00001J, ending Serial #M30080F) ............................53
[e] KML-350MAH (Beginning Serial #M20291G); .......................................................................
KML-350MWH (Beginning Serial #M40081G) ...................................................................54
[f]
KML-450MAF, KML-450MWF ............................................................................................55
[g] KML-450MAH (Beginning Serial #L00101C, ending Serial #L00950G); ................................
KML-450MWH (Beginning Serial #L00001D, ending Serial #L00200G)............................56
[h] KML-450MAH (Beginning Serial #L20951H, ending Serial #M12770F); ................................
KML-450MWH (Beginning Serial #L10201H, ending Serial #M20710F)............................57
[i]
KML-450MAH (Beginning Serial #M22771G); .......................................................................
KML-450MWH (Beginning Serial #M30711G)...................................................................57
[j]
KML-600MAF, KML-600MWF, KML-600MRF.....................................................................59
[k] KML-600MAH (Beginning Serial #L00001F, ending Serial #L00070F);..................................
KML-600MWH (Beginning Serial #L00001D, ending Serial #L00080E)................................
KML-600MRH (Beginning Serial #L00001F, ending Serial #L00050F)..............................60
[l]
KML-600MAH (Beginning Serial #L10071H, ending Serial #M10460G); ................................
KML-600MWH (Beginning Serial #L10081K, ending Serial #M10140E) ...............................
KML-600MRH (Beginning Serial #L10051H, ending Serial #M10350E) ............................61
[m]
KML-600MAH (Beginning Serial #M2_ _ _ _ _); ....................................................................
KML-600MWH (Beginning Serial #M20141F) .......................................................................
KML-600MRH (Beginning Serial #M20331E) ....................................................................62
3. TIMING CHART........................................................................................................................63
4. PERFORMANCE DATA ..........................................................................................................65
[a] KML-250MAH ....................................................................................................................65
[b]
KML-250MWH ...................................................................................................................66
[c]
KML-350MAF .....................................................................................................................67
[d]
KML-350MWF ...................................................................................................................68
[e]
KML-350MAH.....................................................................................................................69
[f]
KML-350MWH (Serial #L00001J through M20060C) .........................................................70
[g]
KML-350MWH (Beginning Serial #M30061E) ....................................................................71
4
[h]
KML-450MAF .....................................................................................................................72
[i]
KML-450MWF ...................................................................................................................73
[j]
KML-450MAH ....................................................................................................................74
[k]
KML-450MWH (Serial #L00001D through M10530B) .......................................................75
[l]
KML-450MWH (Beginning Serial #M20531D)...................................................................76
[m]
KML-600MAF ....................................................................................................................77
[n] KML-600MWF ...................................................................................................................78
[o] KML-600MRF.....................................................................................................................79
[p]
KML-600MAH.....................................................................................................................80
KML-600MWH (Serial #L00001D through M10115C) ........................................................81
[q]
[
r ]
KML-600MWH (Beginning Serial #M10121E)....................................................................82
[s]
KML-600MRH ....................................................................................................................83
IV. SERVICE DIAGNOSIS ................................................................................................................84
1. NO ICE PRODUCTION ...........................................................................................................84
2. EVAPORATOR IS FROZEN UP..............................................................................................87
3. LOW ICE PRODUCTION........................................................................................................87
4. ABNORMAL ICE ......................................................................................................................88
5. OTHERS .................................................................................................................................89
V. REMOVAL AND REPLACEMENT OF COMPONENTS...............................................................89
1. SERVICE FOR REFRIGERANT LINES ..................................................................................89
[a] REFRIGERANT RECOVERY ...........................................................................................89
[b] EVACUATION AND RECHARGE [R-404A].......................................................................89
2. BRAZING .................................................................................................................................90
REMOVAL AND REPLACEMENT OF COMPRESSOR .........................................................91
3.
4. REMOVAL AND REPLACEMENT OF DRIER.........................................................................92
5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE....................................................93
6. REMOVAL AND REPLACEMENT OF HOT GAS VALVE AND....................................................
LINE VALVE ............................................................................................................... .............94
7. REMOVAL AND REPLACEMENT OF EVAPORATOR ...........................................................96
8. REMOVAL AND REPLACEMENT OF WATER-REGULATING VALVE ....................................
- WATER COOLED MODEL ONLY ......................................................................................97
9. ADJUSTMENT OF WATER-REGULATING VALVE ..................................................................
- WATER COOLED MODEL ONLY ......................................................................................98
10. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE .........................................
REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY ........................................99
11. REMOVAL AND REPLACEMENT OF THERMISTOR ...........................................................100
12. REMOVAL AND REPLACEMENT OF FAN MOTOR..............................................................101
13. REMOVAL AND REPLACEMENT OF WATER VALVE..........................................................102
14. REMOVAL AND REPLACEMENT OF PUMP MOTOR ..........................................................103
15. REMOVAL AND REPLACEMENT OF SPRAY TUBES..........................................................103
VI. CLEANING AND MAINTENANCE INSTRUCTIONS...................................................................104
1. PREPARING THE ICEMAKER FOR LONG STORAGE........................................................104
2. CLEANING PROCEDURE ....................................................................................................106
3. SANITIZING PROCEDURE ...................................................................................................108
4. MAINTENANCE......................................................................................................................109
5
I. SPECIFICATIONS
1. KML-250MAH
6
2. KML-250MWH
7
3. KML-350MAF
8
4. KML-350MWF
9
5. KML-350MAH
10
6. KML-350MWH (Beginning serial #L00001J, ending Serial #M20060C)
11
7. KML-350MWH (Beginning serial #M30061E)
12
8. KML-450MAF
13
9. KML-450MWF
14
10. KML-450MAH
15
11. KML-450MWH (Beginning Serial #L00001D, ending Serial #M10530B)
16
12. KML-450MWH (Beginning Serial #M20531D)
17
13. KML-600MAF
18
14. KML-600MWF
19
15. KML-600MRF
20
16. KML-600MAH
21
17. KML-600MWH (Beginning Serial #L00001D, ending Serial #M10115C)
22
18. KML-600MWH (Beginning Serial # M10121E)
23
19. KML-600MRH
24
20. CONDENSER UNIT
URC-7F
Unit: mm. (inches)
25
SPECIFICATIONS
URC-7F
26
II. GENERAL INFORMATION
1. CONSTRUCTION
[a] KML-250MAH, KML-350MAF, KML-350MAH, KML-450MAF, KML-450MAH
Water Pump
Spray Tubes
Water Supply
Inlet
Junction Box
Condenser
Condenser
Fan Motor
Float Switch
Mechanical
Bin Control
(except models
with Thermostat)
Control
Switch
Control Box
Drier
Compressor
Hot Gas Valve
Expansion
Valve
Bin Control
Thermostat
(except models with
Mechanical Bin Control)
27
[b] KML-250MWH, KML-350MWF, KML-350MWH, KML-450MWF, KML-450MWH
Spray Tubes
Water Supply
Inlet
Water
Regulator
Junction Box
Water Pump
Float Switch
Mechanical
Bin Control
(except models
with Thermostat)
Control
Switch
Control Box
Drier
Compressor
Hot Gas Valve
Expansion
Valve
Bin Control
Thermostat
(except models with
Mechanical Bin Control)
28
[c] KML-600MAF, KML-600MAH
Spray Tubes
Expansion
Valve
Water Supply
Inlet
Hot Gas Valve
Junction Box
Condenser
Condenser
Fan Motor
Water Pump
Float Switch
Mechanical
Bin Control
(except models
with Thermostat)
Control Box
Drier
Compressor
Control Switch
Bin Control
Thermostat
(except models with
Mechanical Bin Control)
29
[d] KML-600MWF, KML-600MWH
Spray Tubes
Water Supply
Inlet
Hot Gas Valve
Junction Box
Water
Regulator
Expansion
Valve
Water Pump
Float Switch
Mechanical
Bin Control
(except models
with Thermostat)
Control Box
Drier
Compressor
Control Switch
Bin Control
Thermostat
(except models with
Mechanical Bin Control)
30
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