Hoshizaki Refrigerator KM 1300SAH User Manual

NO:  
73119  
ISSUED:  
Sep. 20, 2004  
HOSHIZAKI  
STACKABLE CRESCENT CUBER  
MODELS  
KM-1300SAH  
KM-1300SWH  
KM-1300SRH  
KM-1300SAH3  
KM-1300SWH3  
KM-1300SRH3  
SERVICE MANUAL  
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Please review this manual. It should be read carefully before the icemaker is serviced or  
maintenance operations are 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  
I. Specifications .................................................................................................................... 5  
1. Icemaker ....................................................................................................................... 5  
KM-1300SAH ............................................................................................................. 5  
KM-1300SWH ............................................................................................................ 6  
KM-1300SRH............................................................................................................. 7  
KM-1300SAH3 ........................................................................................................... 8  
KM-1300SWH3 .......................................................................................................... 9  
KM-1300SRH3......................................................................................................... 10  
2. Condensing Unit......................................................................................................... 11  
URC-12F.................................................................................................................. 11  
II. General Information ........................................................................................................ 13  
1. Construction ............................................................................................................... 13  
[a] KM-1300SAH, KM-1300SAH3 ............................................................................ 13  
[b] KM-1300SWH, KM-1300SWH3 .......................................................................... 14  
[c] KM-1300SRH, KM-1300SRH3 ............................................................................ 15  
2. Controller Board ......................................................................................................... 16  
[a] Solid-State Control .............................................................................................. 16  
[b] Controller Board .................................................................................................. 16  
[c] Sequence ............................................................................................................ 20  
[d] Controls and Adjustments ................................................................................... 23  
[e] Checking the Controller Board ............................................................................ 26  
III.Technical Information ..................................................................................................... 28  
1. Water Circuit and Refrigerant Circuit........................................................................... 28  
[a] KM-1300SAH, KM-1300SAH3 ............................................................................ 28  
[b] KM-1300SWH, KM-1300SWH3 .......................................................................... 29  
[c] KM-1300SRH, KM-1300SRH3 ............................................................................ 30  
2. Wiring Diagrams ......................................................................................................... 31  
[a] KM-1300SAH, KM-1300SWH ............................................................................. 31  
[b] KM-1300SRH ...................................................................................................... 32  
[c] KM-1300SAH3, KM-1300SWH3.......................................................................... 33  
[d] KM-1300SRH3 .................................................................................................... 34  
3. Timing Chart ............................................................................................................... 35  
4. Performance Data....................................................................................................... 37  
[a] KM-1300SAH ...................................................................................................... 37  
[b] KM-1300SWH ..................................................................................................... 38  
[c] KM-1300SRH ...................................................................................................... 39  
[d] KM-1300SAH3 .................................................................................................... 40  
[e] KM-1300SWH3 ................................................................................................... 41  
[f] KM-1300SRH3 ..................................................................................................... 42  
3
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IV. Service Diagnosis.......................................................................................................... 43  
1. No Ice Production ....................................................................................................... 43  
2. Evaporator is Frozen Up ............................................................................................. 47  
3. Low Ice Production ..................................................................................................... 48  
4. Abnormal Ice .............................................................................................................. 48  
5. Other........................................................................................................................... 48  
V. Removal and Replacement of Components ................................................................... 49  
1. Service for Refrigerant Lines ...................................................................................... 49  
[a] Refrigerant Recovery........................................................................................... 49  
[b] Evacuation and Recharge [R-404A] .................................................................... 49  
2. Brazing ....................................................................................................................... 50  
3. Removal and Replacement of Compressor ................................................................ 51  
4. Removal and Replacement of Drier ........................................................................... 52  
5. Removal and Replacement of Expansion Valve......................................................... 53  
6. Removal and Replacement of Hot Gas Valve and Line Valve .................................... 54  
7. Removal and Replacement of Evaporator .................................................................. 55  
8. Removal and Replacement of Water Regulating Valve - Water-Cooled Model Only... 56  
9. Adjustment of Water Regulating Valve - Water-Cooled Model Only ............................ 57  
10. Removal and Replacement of Condensing Pressure Regulator (C.P.R.) -  
Remote Air-Cooled Model Only ................................................................................ 58  
11. Removal and Replacement of Thermistor ................................................................ 59  
12. Removal and Replacement of Fan Motor ................................................................. 60  
13. Removal and Replacement of Water Valve............................................................... 61  
14. Removal and Replacement of Pump Motor .............................................................. 61  
15. Removal and Replacement of Spray Tubes.............................................................. 62  
VI. Maintenance and Cleaning Instructions ........................................................................ 63  
1. Preparing the Icemaker for Long Storage ................................................................... 63  
2. Cleaning and Sanitizing Procedures .......................................................................... 65  
[a] Cleaning Procedure ............................................................................................ 66  
[b] Sanitizing Procedure - Following Cleaning Procedure ....................................... 68  
3. Maintenance ............................................................................................................... 69  
4
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I. Specifications  
1. Icemaker  
KM-1300SAH  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/1 (3 wire with neutral for 115V)  
12.6 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1283 (582)  
1252 (568)  
1242 (563)  
1203 (546)  
1242 (563)  
1188 (539)  
*1143 (518)  
1114 (505)  
1135 (515)  
1053 (478)  
1017 (461)  
902 (409)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
WATER gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2334 (4.9)  
327 (28.6)  
70/50°F  
2180 (0.0)  
697 (54.3)  
48" x 27 3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 275 lbs. ( 125 kg ), Shipping 315 lbs. ( 143 kg )  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
- CONDENSATE DRAIN  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
3/8" OD Pipe  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
N/A  
Thermostat  
Hermetic,  
Model CS14K6E-PFV-237  
CONDENSER  
Air-cooled, Fin and Tube Type  
EVAPORATOR  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
R-404A,  
3 lb. 14 oz. ( 1750 g )  
High 467 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
N/A  
Ice Storage Bin  
OPERATING CONDITIONS  
VOLTAGE RANGE  
AMBIENT TEMP.  
187 - 253 V  
45 -100° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
45 - 90° F  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
5
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KM-1300SWH  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/1 (3 wire with neutral for 115V)  
9.7 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1284 (582)  
1283 (582)  
1282 (582)  
1243 (564)  
1282 (582)  
1280 (581)  
*1278 (580)  
1255 (569)  
1208 (548)  
1166 (529)  
1180 (535)  
1089 (494)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
POTABLE WATER  
WATER COOLED CONDENSER  
gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2130 (4.0)  
282 (22.1)  
920 (72)  
70/50°F  
2033 (3.8)  
512 (39.9)  
668 (52)  
48" x 27-3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 265 lbs. ( 120 kg ), Shipping 315 lbs. (143 kg)  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
Cond. Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
Cond. Outlet 3/8" FPT  
3/8" OD Pipe  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
Water Regulator  
Thermostat  
Hermetic, Model CS14K6E-PFV-237  
Water-cooled, Tube in tube type  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
CONDENSER  
EVAPORATOR  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
R-404A,  
2 lb. 2 oz. ( 950 g )  
High 427 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
N/A  
Ice Storage Bin  
OPERATING CONDITIONS  
VOLTAGE RANGE  
AMBIENT TEMP.  
187 - 253 V  
45 -100° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
45 - 90° F  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
6
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KM-1300SRH  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/1 (3 wire with neutral for 115V)  
14.5 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1296 (588)  
1266 (574)  
1257 (570)  
1230 (558)  
1257 (570)  
1206 (547)  
*1163 (528)  
1141 (517)  
1173 (532)  
1105 (501)  
1068 (484)  
980 (445)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
WATER gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2326 (4.8)  
355 (30.5)  
70/50°F  
2300 (0.0)  
772 (59.6)  
48" x 27 3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 255 lbs. ( 116 kg ), Shipping 315 lbs. ( 143 kg )  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
- CONDENSATE DRAIN  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
3/8" OD Pipe  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
N/A  
Thermostat  
Hermetic,  
Model CS14K6E-PFV-279  
CONDENSER  
Air-cooled remote, Condenser Unit URC-12F  
recommended  
EVAPORATOR  
REFRIGERANT CONTROL  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
Condensing Pressure Regulator on URC-12F  
REFRIGERANT CHARGE  
R-404A,  
11 lbs. 7 oz. ( 5200 g )  
( Icemaker 7 lbs.; Cond. Unit 4 lbs. 7 oz. )  
High 467 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
N/A  
Ice Storage Bin, Remote Condenser Unit  
VOLTAGE RANGE  
OPERATING CONDITIONS  
187 - 253 V  
45 -100° F  
AMBIENT TEMP.  
WATER SUPPLY TEMP.  
45 - 90° F  
WATER SUPPLY PRESSURE  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
7
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KM-1300SAH3  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/3  
7.8 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1320 (599)  
1278 (580)  
1265 (574)  
1230 (558)  
1265 (574)  
1192 (541)  
*1132 (513)  
1102 (500)  
1153 (523)  
1060 (481)  
1006 (456)  
890 (404)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
WATER gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2311 (4.9)  
267 (23.6)  
70/50°F  
2150 (0.0)  
632 (47.9)  
48" x 27 3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 275 lbs. ( 125 kg ), Shipping 315 lbs. ( 143 kg )  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
- CONDENSATE DRAIN  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
3/8" OD Pipe  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
N/A  
Thermostat  
Hermetic,  
Model CS14K6E-TF5-237  
CONDENSER  
Air-cooled, Fin and Tube Type  
EVAPORATOR  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
R-404A,  
3 lb. 14 oz. ( 1750 g )  
High 467 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
N/A  
Ice Storage Bin  
OPERATING CONDITIONS  
VOLTAGE RANGE  
AMBIENT TEMP.  
187 - 253 V  
45 -100° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
45 - 90° F  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
8
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KM-1300SWH3  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/3  
6.9 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1254 (569)  
1261 (572)  
1264 (573)  
1220 (554)  
1264 (573)  
1276 (579)  
*1287 (584)  
1263 (573)  
1191 (540)  
1157 (525)  
1186 (538)  
1093 (496)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
POTABLE WATER  
WATER COOLED CONDENSER  
gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2091 (3.9)  
292 (22.7)  
927 (72)  
70/50°F  
2090 (4.0)  
576 (45.9)  
640 (51)  
48" x 27-3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 265 lbs. ( 120 kg ), Shipping 315 lbs. (143 kg)  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
Cond. Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
Cond. Outlet 3/8" FPT  
3/8" OD Pipe  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
Water Regulator  
Thermostat  
Hermetic, Model CS14K6E-TF5-237  
Water-cooled, Tube in tube type  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
CONDENSER  
EVAPORATOR  
REFRIGERANT CONTROL  
REFRIGERANT CHARGE  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
R-404A,  
2 lb. 2 oz. ( 950 g )  
High 427 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
N/A  
Ice Storage Bin  
OPERATING CONDITIONS  
VOLTAGE RANGE  
AMBIENT TEMP.  
187 - 253 V  
45 -100° F  
WATER SUPPLY TEMP.  
WATER SUPPLY PRESSURE  
45 - 90° F  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
9
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KM-1300SRH3  
AC SUPPLY VOLTAGE  
AMPERAGE  
208-230/60/3  
10.8 A ( 5 Min. Freeze AT 104°F / WT 80°F)  
MINIMUM CIRCUIT AMPACITY  
MAXIMUM FUSE SIZE  
APPROXIMATE ICE PRODUCTION  
PER 24 HR.  
20 A  
20 A  
Ambient  
WATER TEMP. (°F)  
70  
Temp.(°F)  
50  
90  
lbs./day ( kg/day )  
Reference without *marks  
70  
80  
90  
100  
*1308 (593)  
1299 (589)  
1296 (588)  
1252 (568)  
1296 (588)  
1279 (580)  
*1266 (574)  
1238 (562)  
1203 (546)  
1145 (520)  
1148 (521)  
1039 (471)  
SHAPE OF ICE  
Crescent Cube  
ICE PRODUCTION PER CYCLE  
APPROXIMATE STORAGE CAPACITY  
ELECTRIC & WATER CONSUMPTION  
ELECTRIC W (kWH/100 lbs.)  
WATER gal./24HR (gal./100 lbs.)  
EXTERIOR DIMENSIONS (WxDxH)  
EXTERIOR FINISH  
30.1 lbs. (13.7 kg) 1440 pcs.  
N/A  
90/70°F  
2321 (4.4)  
251 (19.8)  
70/50°F  
2270 (4.2)  
706 (54.0)  
48" x 27 3/8" x 27 3/8" (1219 x 695 x 695 mm)  
Stainless Steel, Galvanized Steel (Rear)  
WEIGHT  
Net 255 lbs. ( 116 kg ), Shipping 315 lbs. ( 143 kg )  
Permanent - Connection  
CONNECTIONS - ELECTRIC  
- WATER SUPPLY  
Inlet  
1/2" FPT  
- DRAIN  
Outlet  
3/4" FPT  
- CONDENSATE DRAIN  
CUBE CONTROL SYSTEM  
HARVESTING CONTROL SYSTEM  
ICE MAKING WATER CONTROL  
COOLING WATER CONTROL  
BIN CONTROL SYSTEM  
COMPRESSOR  
3/8" OD Pipe  
Float Switch  
Hot Gas and Water, Thermistor and Timer  
Timer Controlled. Overflow Pipe  
N/A  
Thermostat  
Hermetic,  
Model CS14K6E-TF5-279  
CONDENSER  
Air-cooled remote, Condenser Unit URC-12F  
recommended  
EVAPORATOR  
REFRIGERANT CONTROL  
Vertical type, Stainless Steel and Copper  
Thermostatic Expansion Valve  
Condensing Pressure Regulator on URC-12F  
REFRIGERANT CHARGE  
R-404A,  
11 lbs. 7 oz. ( 5200 g )  
( Icemaker 7 lbs.; Cond. Unit 4 lbs. 7 oz. )  
High 467 PSIG, Low 230 PSIG  
High Voltage Cut-out ( Internal )  
Auto-reset Overload Protector ( Internal )  
Auto-reset High Pressure Control Switch  
Float Switch  
DESIGN PRESSURE  
P.C. BOARD CIRCUIT PROTECTION  
COMPRESSOR PROTECTION  
REFRIGERANT CIRCUIT PROTECTION  
LOW WATER PROTECTION  
ACCESSORIES -SUPPLIED  
-REQUIRED  
N/A  
Ice Storage Bin, Remote Condenser Unit  
VOLTAGE RANGE  
OPERATING CONDITIONS  
187 - 253 V  
45 -100° F  
AMBIENT TEMP.  
WATER SUPPLY TEMP.  
45 - 90° F  
WATER SUPPLY PRESSURE  
10 - 113 PSIG  
We reserve the right to make changes in specifications and design without prior notice.  
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2. Condensing Unit  
URC-12F  
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SPECIFICATIONS  
MODEL: URC-12F  
EXTERIOR  
Galvanized Steel  
DIMENSIONS (W x D x H)  
35 - 11/16” x 15-11/16” x 21-15/16”  
(907.2 x 398 x 557.8 mm)  
REFRIGERANT CHARGE  
URC-12F  
R404A 4 lbs. 7 oz. (2000 g)  
WEIGHT  
Net 80 lbs. (36 kg)  
Shipping 87 lbs. (39 kg)  
CONNECTIONS  
REFRIGERANT  
ELECTRICAL  
One Shot Couplings (Aeroquip)  
Permanent Connection  
CONDENSER  
Air-cooled  
HEAD PRESSURE CONTROL  
AMBIENT CONDITION  
Condensing Pressure Regulator  
Min. -20°F - Max. +122°F  
(-29°C to +50°C)  
Outdoor use  
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II. General Information  
1. Construction  
[a] KM-1300SAH, KM-1300SAH3  
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[b] KM-1300SWH, KM-1300SWH3  
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[c] KM-1300SRH, KM-1300SRH3  
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2. Controller Board  
[a] Solid-State Control  
1) A HOSHIZAKI exclusive solid-state control is employed in KM-1300SAH, KM-1300SWH,  
KM-1300SRH, KM-1300SAH3, KM-1300SWH3, and KM-1300SRH3 Stackable Crescent  
Cubers.  
2) A printed circuit board (hereafter called “controller board”) includes a stable and high quality  
control system.  
3) All models are pretested and factory-adjusted.  
[b] Controller Board  
CAUTION  
1. Fragile, handle very carefully.  
2. A controller board contains integrated circuits, which are susceptible to failure due to  
static discharge. It is especially important to touch the metal part of the unit when  
handling or replacing the board.  
3. Do not touch the electronic devices on the board or the back of the board to prevent  
damage to the board.  
4. Do not change wiring and connections. Do not misconnect K3, K4 and K5, because  
the same connector is used for the thermistor and float switch. K4 is not connected.  
5. Always replace the whole board assembly when it goes bad.  
6. Do not short out power supply to test for voltage.  
PART NUMBER  
2A1410-01  
TYPE  
HOS-001A (Control Products - 10 Pin)  
Features of Control Products “E” Controller Board  
(1) Maximum Water Supply Period - 6 minutes  
Water solenoid valve opening in the defrost (harvest) cycle is limited by the defrost timer. The  
water valve cannot remain open longer than the maximum period. The water valve can close in  
less than six minutes if the defrost cycle is completed.  
(2) Defrost Timer  
The defrost cycle starts when the float switch opens and completes the freeze cycle. But the  
defrost timer does not start counting until the thermistor senses 48°F at the evaporator outlet.  
The period from the end of the freeze cycle up to the point of the thermistor's sensing varies  
depending on the ambient and water temperatures.  
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(3) High Temperature Safety - 127 7°F  
The temperature of the suction line in the refrigerant circuit is limited by the high temperature  
safety. During the defrost cycle the evaporator temperature rises. The thermistor senses 48°F  
and starts the defrost timer. After the defrost timer counts down to zero, the normal freeze cycle  
begins. If the evaporator temperature continues to rise, the thermistor will sense the rise in  
temperature and at 127 7°F the thermistor operates the high temperature safety. This high  
temperature safety shuts down the circuit and the icemaker automatically stops. To reset the  
safety, turn the power off and back on again. This high temperature safety protects the unit from  
excessive temperature. The control board will beep every three seconds. The white reset button  
on the control board must be pressed with power on to reset the safety.  
(4) Low Water Safety  
If the pump motor is operated without water, the mechanical seal can fail. To prevent this type of  
failure, the controller board checks the position of the float switch at the end of the initial one  
minute water fill cycle and at the end of each defrost cycle.  
If the float switch is in the up position (electrical circuit closed), the controller board changes to  
the ice making cycle. If the float switch is in the down position (electrical circuit open), the  
controller board changes to a one minute water fill cycle before starting the ice making cycle.  
This method allows for a low water safety shut down to protect the water pump from mechanical  
seal failure. For water-cooled models, if the water is shut off, the unit is protected by the high  
pressure switch.  
(5) High Voltage Cut-out  
The maximum allowable supply voltage of this icemaker is limited by the high voltage cut-out. If  
miswiring (especially on single-phase, 3-wire models) causes excessive voltage on the  
controller board, the high voltage cut-out shuts down the circuit in 3 seconds and the icemaker  
automatically stops. When the proper supply voltage is resumed, the icemaker automatically  
starts running again. The control board will signal this problem using 7 beeps every 3 seconds.  
6) LED Lights and Audible Alarm Safeties  
The red LED indicates proper control voltage and will remain on unless a control voltage  
problem occurs. At startup a 5 second delay occurs while the board conducts an internal timer  
check. A short beep occurs when the power switch is turned ON or OFF.  
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The green LED’s 1-4 represent the corresponding relays and energize and sequence  
5 seconds from initial startup as follows:  
Sequence Step  
1 Minute Fill Cycle  
Harvest Cycle  
Cycle  
LED’s on Length: Min.  
LED4  
Max.  
Avg.  
60 sec.  
3-5 min.  
30-35 min.  
Factory set.  
LED1, 4, & 2  
LED1  
2 min.  
5 min.  
20 min.  
60 min.  
20 sec.  
Freeze  
Reverse Pump Out  
LED1, 3, & 2  
10 sec.  
{LED 1 – Comp; LED 2 - HGV/CFM; LED 3 – PM; LED 4 - WV}  
The built in safeties shut down the unit and have alarms as follows:  
1 beep every 3 sec. = High Evaporator Temperature >127 ° F.  
Check for defrost problem (stuck HGV or relay), hot water entering unit, stuck headmaster, or  
shortedthermistor.  
2 beeps every 3 sec. = Defrost Back Up Timer. Defrost >20 minutes.  
Orange LED marked 20 MIN energizes.  
Check for open thermistor, HGV not opening, TXV leaking by, low charge, or inefficient com-  
pressor.  
3 beeps every 3 sec. = Freeze Back Up Timer. Freeze > 60 minutes.  
Yellow LED marked 60 MIN energizes.  
Check for F/S stuck closed (up), WV leaking by, HGV leaking by, TXV not feeding properly,  
low charge, or inefficient compressor.  
To manually reset the above safeties, depress white alarm reset button with the power supply  
ON.  
6 beeps every 3 sec. = Low Voltage. Voltage is 92 Vac or less.  
7 beeps every 3 sec. = High Voltage. Control voltage > 147Vac 5%.  
The red LED will de-energize if voltage protection operates.  
The voltage safety automatically resets when voltage is corrected.  
The Output Test switch “S3” provides a relay sequence test. With power OFF, place S3 ON  
and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, & 4, normal  
sequence every 5 seconds. S3 should remain in the “OFF” position for normal operation.  
The application switch located between relay X3 & X4 must be set to match the original board  
application. Place this switch in the ALP position if there is no white wire supplied to the K1  
connector. If there is a white wire, place the switch in the C position. If this switch is placed in  
the wrong position either the compressor contactor will remain energized with the control switch  
OFF or the unit will not start.  
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The dip switches should be adjusted per the adjustment chart published in the Tech Specs  
book. 7 & 8 must remain in the OFF position.  
(Control Products HOS-001A Board)  
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[c] Sequence  
1st Cycle  
3. Thermistor reads 48°F.  
1. Unit energized and Control Switch to “ICE”  
position. Water supply cycle starts.  
Defrost Timer starts counting.  
NT  
mited  
5. After the first 5 minutes in freeze cycle.  
Ready to complete freeze cycle when Float  
Switch circuit opens.  
4. Defrost Timer stops counting.  
Defrost cycle is completed and freeze cycle  
starts.  
IMPORTANT  
IMPORTANT  
Board never accepts freeze completion signal  
within the first 5 minutes in freeze cycle.  
1. Board never accepts defrost completion signal  
within the first 2 minutes in defrost cycle.  
2. Defrost cycle time is limited to 20 minutes even  
if Defrost Timer does not stop counting.  
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2nd Cycle and after with pump drain  
IMPORTANT  
Freeze cycle time is limited by the freeze timer  
factory setting even if the Float Switch does  
notopen.  
2. Drain timer stops counting.  
Pump drain is completed  
1. Float Switch opens and signals to complete  
freeze cycle.  
Drain timer starts counting.  
3. Thermistor reads 48° F.  
Defrost Timer starts  
counting.  
IMPORTANT  
ater Valve  
pening is limited to 6  
inutes.  
5. After the first 5 minutes in freeze cycle.  
Ready to complete freeze cycle when Float  
Switch circuit opens.  
4. Defrost Timer stops counting.  
Defrost cycle is completed and freeze cycle  
starts.  
IMPORTANT  
Board never accepts freeze completion signal  
within the first 5 minutes in freeze cycle.  
IMPORTANT  
1. Board never accepts defrost completion  
signal within the first 2 minutes in defrost  
cycle.  
2. Defrost cycle time is limited to 20 minutes  
even if Defrost Timer does not stop counting.  
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2nd Cycle and after with no pump drain  
IMPORTANT  
Freeze cycle time is limited by the freeze timer  
factory setting even if the Float Switch does  
notopen.  
2. Thermistor reads 48° F.  
1. Float Switch opens and signals to complete  
freeze cycle.  
Defrost Timer starts counting.  
RTANT  
e  
imited to 6  
3. Defrost Timer stops counting.  
4. After the first 5 minutes in freeze cycle.  
Ready to complete freeze cycle when Float  
Switch circuit opens.  
Defrost cycle is completed and freeze cycle  
starts.  
IMPORTANT  
Board never accepts freeze completion signal  
within the first 5 minutes in freeze cycle.  
IMPORTANT  
1. Board never accepts defrost completion  
signal within the first 2 minutes in defrost  
cycle.  
2. Defrost cycle time is limited to 20 minutes  
even if Defrost Timer does not stop counting.  
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[d] Controls and Adjustments  
The dip switch is factory-adjusted to the following positions:  
DIP SWITCH NO.  
2A1410-01 KM-1300SAH  
KM-1300SWH  
1
2
3
4
5
6
7
8
9
10  
OFF OFF ON ON ON ON OFF OFF OFF OFF  
OFF OFF ON ON ON ON OFF OFF ON OFF  
KM-1300SRH  
KM-1300SWH3  
KM-1300SAH3  
KM-1300SRH3  
Switch Nos. 1 and 2:  
Used for adjustment of the defrost timer. The defrost timer starts counting when the thermistor  
reads a certain temperature at the evaporator outlet.  
Switch Nos. 3 and 4:  
Used for adjustment of the drain timer. When a freeze cycle is completed, the pump motor  
stops, and the icemaker resumes operation in 2 seconds. Then the pump motor drains the  
water tank for the time determined by the drain timer. The drain timer also determines the time  
to restrain completion of a defrost cycle, i.e. the minimum defrost time.  
Switch Nos. 5 and 6:  
Used for adjustment of the drain counter. The pump motor drains the water tank at the  
frequency determined by the drain counter.  
Switch Nos. 7 and 8:  
Used only for checking the controller board. Usually set in OFF position.  
Switch Nos. 9 and 10:  
Used for adjustment of freeze timer.  
The freeze timer determines maximum  
freeze cycle time. Upon termination of  
freeze timer, machine initiates the  
harvest cycle. After 2 consecutive timer  
terminations, machine will shut down,  
possibly indicating a problem.  
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1) Defrost Control  
A thermistor (semiconductor) is used for a defrost control sensor. The resistance varies  
depending on the suction line temperatures. The thermistor detects the temperature of the  
evaporator outlet to start the defrost timer. No adjustment is required. If necessary, check for  
resistance between thermistor leads, and visually check the thermistor mounting, located on  
the suction line next to the evaporator outlet.  
Temperature (°F)  
Resistance (k)  
14.401  
10.613  
6.000  
0
10  
32  
50  
70  
90  
3.871  
2.474  
1.633  
Check a thermistor for resistance by using the following procedures.  
(i) Disconnect the connector K3 on the board.  
(ii) Remove the thermistor. See V. 11. Removal and Replacement of Thermistor.”  
(iii) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes.  
(iv) Check for a resistance between thermistor leads.  
Normal reading is within 3.5 to 7 k. Replace the thermistor if it exceeds the normal reading.  
2) Defrost Timer  
No adjustment is required under normal use, as the defrost timer is adjusted to the suitable  
position. However, if necessary because all the ice formed on the evaporator does not fall into  
the bin in the harvest cycle, adjust the defrost timer to a longer setting by adjusting the dip  
switch (No. 1 & 2) on the controller board.  
SETTING  
TIME  
Dip Switch  
Dip Switch  
No. 2  
No. 1  
OFF  
ON  
OFF  
ON  
OFF  
OFF  
ON  
60 seconds  
90 seconds  
120 seconds  
180 seconds  
ON  
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3) Drain Timer  
The drain timer is factory-adjusted and no adjustment is required.  
SETTING  
TIME  
Dip Switch  
Dip Switch  
No. 4  
No. 3  
T1  
T2  
OFF  
ON  
OFF  
ON  
OFF  
OFF  
ON  
10 seconds  
10 seconds  
10 seconds  
20 seconds  
150 seconds  
180 seconds  
120 seconds  
180 seconds  
ON  
T1: Time to drain the water tank  
T2: Time to restrain defrost completion  
4) Drain Counter  
CAUTION  
Do not adjust the drain counter, or the evaporator may freeze up.  
The drain counter is factory-adjusted to drain the water tank every 10 cycles, and no adjustment  
is required. However, where water quality is bad and the icemaker needs a pump drain more  
often, the drain counter can be adjusted as shown in the table below.  
SETTING  
FREQUENCY  
Dip Switch  
Dip Switch  
No. 6  
No. 5  
OFF  
ON  
OFF  
ON  
OFF  
OFF  
ON  
every cycle  
every 2 cycles  
every 5 cycles  
every 10 cycles  
ON  
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5) Freeze Timer  
CAUTION  
Adjust to proper specification, or the unit may not operate correctly.  
The freeze timer is factory adjusted and no adjustment is required. This setting determines the  
maximum allowed freeze time to prevent possible freeze-up issues.  
SETTING  
TIME  
Dip Switch  
Dip Switch  
No. 10  
No. 9  
OFF  
ON  
OFF  
ON  
OFF  
OFF  
ON  
60 min.  
70 min.  
50 min.  
60 min.  
ON  
6) Bin Control  
CAUTION  
When the ambient temperature is below 45°F, the bin control thermostat operates to  
stop the icemaker even if the ice storage bin is empty. When the thermostat is set in the  
prohibited range, the icemaker operates continuously even if the ice storage bin is  
filled with ice. Setting in the prohibited range might cause severe damage to the  
icemaker resulting in failure.  
No adjustment is required under normal use, as the bin control is factory-adjusted. Adjust it, if  
necessary, so that the icemaker stops automatically within 10 seconds after ice contacts the bin  
control thermostat bulb.  
[e] Checking the Controller Board  
1) Visually check the sequence with the icemaker operating.  
2) Visually check the controller board by using the following procedures:  
(i) Adjust the defrost timer to minimum position.  
Disconnect the thermistor from the controller board.  
Connect a 1.5 k- 3.5 kresistor to the connector K3 (pins #1 and #2), and energize the unit.  
After the 1 minute 5 second water supply cycle and the 2 minute 10 second defrost cycle, the  
unit should start the freeze cycle.  
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(ii) After the above step (i), disconnect the float switch leads from the controller board within the first  
5 minutes of the freeze cycle.  
The unit should go into the defrost cycle after the first 5 minutes 20 seconds of the freeze  
cycle.  
(iii) Reconnect the float switch connector to the controller board. After the first 5 minutes of the  
freeze cycle, disconnect the float switch leads from the controller board.  
At this point, the unit should start the defrost cycle.  
(iv) After step (iii), de-energize the unit and confirm that the defrost timer is in the minimum  
position. Disconnect the resistor from the controller board, and energize the unit.  
After the 1 minute water supply cycle, the defrost cycle starts.  
Re-connect a 1.5 k- 3.5 kresistor to the connector K3 (pins #1 and #2) after the first  
2 minutes of the defrost cycle. The unit should start the freeze cycle after 1 minute 5  
seconds from the resistor connection.  
3) Check the controller board using the controller boards test program.  
The output test switch S3provides a relay sequence test. With power OFF, place S3 on and  
switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, and 4, normal  
sequence every 5 seconds. S3 should remain in the OFFposition for normal operation.  
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III. Technical Information  
1. Water Circuit and Refrigerant Circuit  
[a] KM-1300SAH, KM-1300SAH3  
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[b] KM-1300SWH, KM-1300SWH3  
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[c] KM-1300SRH, KM-1300SRH3  
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2. Wiring Diagrams  
[a] KM-1300SAH, KM-1300SWH  
Note: Pressure Switch  
KM-1300SAH  
KM-1300SWH  
Cut-out 384 +021.3 PSIG  
Cut-out 412 +021.3 PSIG  
Cut-in  
285 21.3 PSIG  
Cut-in  
327 21.3 PSIG  
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[b] KM-1300SRH  
Note: Pressure Switch  
Cut-out 412  
PSIG  
+21.3  
0
Cut-in  
327 21.3 PSIG  
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[c] KM-1300SAH3, KM-1300SWH3  
Note: Pressure Switch  
KM-1300SAH3  
KM-1300SWH3  
Cut-out 384 +021.3 PSIG  
Cut-out 412 +021.3 PSIG  
Cut-in  
285 21.3 PSIG  
Cut-in  
327 21.3 PSIG  
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[d] KM-1300SRH3  
Note: Pressure Switch  
Cut-out 412+021.3 PSIG  
Cut-in 327 21.3 PSIG  
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3. Timing Chart  
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4. Performance Data  
[a] KM-1300SAH  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
582  
568  
1242  
1188  
563  
539  
1135  
1053  
515  
478  
1283  
1252  
90/32  
1242  
1203  
563  
546  
518  
505  
1017  
902  
461  
409  
1143  
1114  
lbs./day kg./day  
100/38  
APPROXIMATE ELECTRIC  
CONSUMPTION  
70/21  
80/27  
90/32  
2225  
2284  
2334  
2351  
2295  
2358  
2407  
2475  
2180  
2214  
2225  
2242  
watts  
100/38  
70/21  
80/27  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
2.64  
2.32  
2.23  
1.73  
588  
446  
327  
315  
2.23  
1.69  
1.24  
1.19  
514  
412  
274  
226  
1.94  
1.56  
1.04  
0.85  
697  
614  
588  
456  
90/32  
gal./day m3/day  
FREEZING CYCLE TIME  
100/38  
70/21  
80/27  
32  
35  
36  
39  
30  
32  
90/32  
100/38  
70/21  
32  
33  
41  
44  
37  
38  
min.  
HARVEST CYCLE TIME  
3.8  
3.5  
4.5  
80/27  
90/32  
4.0  
3.8  
2.9  
3.0  
2.1  
2.2  
min.  
100/38  
70/21  
80/27  
90/32  
3.1  
2.2  
2.0  
HEAD PRESSURE  
17.9  
18.9  
19.2  
273  
296  
315  
19.2  
20.8  
22.1  
296  
318  
338  
20.8  
22.4  
23.8  
255  
268  
273  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
277  
45  
46  
47  
47  
19.5  
3.2  
3.3  
3.3  
3.3  
320  
47  
49  
51  
51  
22.5  
3.3  
3.5  
3.6  
3.6  
360  
49  
51  
53  
55  
25.3  
3.4  
3.6  
3.7  
3.9  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
19,800 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
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[b] KM-1300SWH  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
90/32  
582  
582  
582  
1282  
1280  
1278  
582  
581  
580  
1208  
1166  
1180  
548  
529  
535  
1284  
1283  
1282  
lbs./day kg./day  
100/38  
70/21  
80/27  
1243  
564  
1255  
569  
1089  
494  
APPROXIMATE ELECTRIC  
CONSUMPTION  
2061  
2099  
2130  
2142  
2108  
2149  
2180  
2225  
2033  
2055  
2061  
2073  
90/32  
100/38  
70/21  
80/27  
watts  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
6.01  
5.68  
5.58  
6.62  
1474  
1326  
1203  
1345  
5.58  
5.02  
4.55  
5.09  
1889  
2057  
1808  
2365  
7.15  
7.79  
6.85  
8.95  
1587  
1501  
1474  
1750  
90/32  
gal./day m3/day  
100/38  
FREEZING CYCLE TIME  
70/21  
80/27  
33  
33  
35  
36  
32  
32  
90/32  
33  
33  
37  
39  
34  
min.  
100/38  
35  
HARVEST CYCLE TIME  
70/21  
3.7  
2.9  
2.3  
3.4  
4.3  
3.9  
3.7  
80/27  
90/32  
2.9  
2.1  
min.  
100/38  
70/21  
80/27  
90/32  
3.8  
2.3  
2.0  
HEAD PRESSURE  
19.3  
19.5  
19.5  
278  
282  
285  
19.5  
19.8  
20.0  
288  
295  
297  
20.2  
20.7  
20.9  
275  
277  
278  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
282  
47  
47  
48  
48  
19.8  
3.3  
3.3  
3.3  
3.4  
288  
48  
48  
49  
49  
20.2  
3.3  
3.4  
3.4  
3.5  
308  
49  
49  
50  
51  
21.7  
3.4  
3.5  
3.5  
3.6  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
15,560 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
2650 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
88 gal. / h (AT 100ºF (38ºC) / WT 90ºF (32ºC))  
less than 10 PSIG  
TOTAL HEAT OF REJECTION FROM COMPRESSOR  
WATER FLOW FOR CONDENSER  
PRESSURE DROP OF COOLING WATER LINE  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
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[c] KM-1300SRH  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
588  
574  
1257  
1206  
570  
547  
1173  
1105  
532  
501  
1296  
1266  
90/32  
1257  
1230  
570  
558  
528  
517  
1068  
980  
484  
445  
1163  
1141  
lbs./day kg./day  
100/38  
APPROXIMATE ELECTRIC  
CONSUMPTION  
70/21  
80/27  
90/32  
2308  
2318  
2326  
2335  
2339  
2360  
2365  
2400  
2300  
2306  
2308  
2321  
watts  
100/38  
70/21  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
2.92  
2.57  
2.46  
1.91  
650  
489  
355  
342  
2.46  
1.85  
1.34  
1.30  
571  
459  
302  
254  
2.16  
1.74  
1.14  
0.96  
772  
679  
650  
503  
80/27  
90/32  
gal./day m3/day  
100/38  
FREEZING CYCLE TIME  
70/21  
80/27  
30  
31  
33  
36  
29  
30  
90/32  
100/38  
70/21  
30  
31  
36  
40  
32  
33  
min.  
HARVEST CYCLE TIME  
4.2  
3.8  
5.0  
80/27  
90/32  
4.4  
4.2  
3.1  
3.2  
2.1  
2.2  
min.  
100/38  
70/21  
80/27  
90/32  
3.3  
2.2  
2.0  
HEAD PRESSURE  
15.5  
16.1  
16.3  
232  
247  
260  
16.3  
17.4  
18.3  
247  
262  
276  
17.4  
18.4  
19.4  
220  
229  
232  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
235  
45  
46  
46  
47  
16.5  
3.2  
3.2  
3.3  
3.3  
264  
46  
48  
50  
51  
18.5  
3.3  
3.4  
3.5  
3.6  
290  
49  
51  
53  
55  
20.4  
3.4  
3.6  
3.7  
3.9  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
18300 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
2910 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
132 CU. IN (URC-12F)  
TOTAL HEAT OF REJECTION FROM COMPRESSOR  
CONDENSER VOLUME  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
39  
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[d] KM-1300SAH3  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
599  
580  
1265  
1192  
574  
541  
1153  
1060  
523  
481  
1320  
1278  
90/32  
1265  
1230  
574  
558  
513  
500  
1006  
890  
456  
404  
1132  
1102  
lbs./day kg./day  
100/38  
70/21  
80/27  
90/32  
2197  
2259  
2311  
2320  
2239  
2289  
2347  
2380  
2150  
2186  
2197  
2198  
watts  
100/38  
70/21  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
2.39  
2.08  
1.99  
1.54  
525  
385  
267  
263  
1.99  
1.46  
1.01  
0.99  
476  
389  
248  
231  
1.80  
1.47  
0.94  
0.87  
632  
551  
525  
406  
80/27  
90/32  
gal./day m3/day  
100/38  
FREEZING CYCLE TIME  
70/21  
80/27  
32  
35  
36  
39  
30  
32  
90/32  
100/38  
70/21  
32  
33  
41  
45  
37  
38  
min.  
HARVEST CYCLE TIME  
3.4  
3.2  
4.0  
80/27  
90/32  
3.6  
3.4  
2.7  
2.8  
2.0  
2.1  
min.  
100/38  
70/21  
80/27  
90/32  
2.8  
2.1  
2.0  
HEAD PRESSURE  
17.9  
18.9  
19.3  
274  
299  
320  
19.3  
21.0  
22.5  
296  
318  
341  
20.8  
22.4  
24.0  
255  
270  
274  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
277  
47  
48  
48  
49  
19.5  
3.3  
3.4  
3.4  
3.4  
325  
48  
50  
52  
52  
22.8  
3.4  
3.5  
3.7  
3.7  
360  
50  
52  
54  
55  
25.3  
3.5  
3.6  
3.8  
3.9  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
18,130 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
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[e] KM-1300SWH3  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
90/32  
569  
572  
573  
1264  
1276  
1287  
573  
579  
584  
1191  
1157  
1186  
540  
525  
538  
1254  
1261  
1264  
lbs./day kg./day  
100/38  
70/21  
80/27  
1220  
554  
1263  
573  
1093  
496  
APPROXIMATE ELECTRIC  
CONSUMPTION  
2090  
2091  
2091  
2092  
2092  
2093  
2093  
2095  
2090  
2090  
2090  
2091  
90/32  
100/38  
70/21  
80/27  
watts  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
4.60  
4.60  
4.60  
6.62  
1216  
1218  
1219  
1333  
4.60  
4.61  
4.61  
5.05  
1581  
1785  
1708  
2158  
5.99  
6.76  
6.47  
8.17  
1215  
1216  
1216  
1750  
90/32  
gal./day m3/day  
100/38  
FREEZING CYCLE TIME  
70/21  
80/27  
31  
32  
33  
34  
30  
31  
90/32  
31  
32  
35  
37  
33  
min.  
100/38  
33  
HARVEST CYCLE TIME  
70/21  
3.6  
2.8  
2.2  
3.3  
4.2  
3.8  
3.6  
80/27  
90/32  
2.9  
2.1  
min.  
100/38  
70/21  
80/27  
90/32  
3.0  
2.2  
2.0  
HEAD PRESSURE  
19.0  
19.2  
19.3  
274  
280  
285  
19.3  
19.7  
20.0  
284  
291  
295  
19.9  
20.5  
20.8  
270  
273  
274  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
277  
48  
49  
49  
49  
19.5  
3.4  
3.4  
3.4  
3.4  
287  
49  
50  
51  
51  
20.2  
3.4  
3.5  
3.6  
3.6  
305  
50  
51  
52  
53  
21.4  
3.5  
3.6  
3.7  
3.7  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
15,450 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
2560 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
88 gal. / h (AT 100ºF (38ºC) / WT 90ºF (32ºC))  
less than 10 PSIG  
TOTAL HEAT OF REJECTION FROM COMPRESSOR  
WATER FLOW FOR CONDENSER  
PRESSURE DROP OF COOLING WATER LINE  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
41  
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[f] KM-1300SRH3  
APPROXIMATE ICE  
WATER TEMP. (ºF/ºC)  
70/21  
AMBIENT TEMP.  
(ºF/ºC)  
PRODUCTION PER 24 HR.  
50/10  
90/32  
70/21  
80/27  
593  
589  
1296  
1279  
588  
580  
1203  
1145  
546  
520  
1308  
1299  
90/32  
1296  
1252  
588  
568  
574  
562  
1148  
1039  
521  
471  
1266  
1238  
lbs./day kg./day  
100/38  
APPROXIMATE ELECTRIC  
CONSUMPTION  
70/21  
80/27  
90/32  
2285  
2305  
2321  
2334  
2332  
2367  
2378  
2430  
2270  
2281  
2285  
2303  
watts  
100/38  
70/21  
APPROXIMATE WATER  
CONSUMPTION PER 24 HR.  
2.67  
2.29  
2.17  
1.63  
573  
397  
251  
251  
2.17  
1.50  
0.95  
0.95  
531  
434  
253  
256  
2.01  
1.64  
0.96  
0.97  
706  
605  
573  
432  
80/27  
90/32  
gal./day m3/day  
100/38  
FREEZING CYCLE TIME  
70/21  
80/27  
31  
32  
33  
35  
30  
31  
90/32  
100/38  
70/21  
31  
32  
36  
39  
33  
34  
min.  
HARVEST CYCLE TIME  
4.0  
3.7  
4.8  
80/27  
90/32  
4.2  
4.0  
3.0  
3.1  
2.1  
2.2  
min.  
100/38  
70/21  
80/27  
90/32  
3.2  
2.2  
2.0  
HEAD PRESSURE  
16.2  
16.8  
17.0  
242  
257  
270  
17.0  
18.1  
19.0  
259  
275  
288  
18.2  
19.4  
20.3  
230  
239  
242  
PSIG  
SUCTION PRESSURE  
kg/cm2G  
100/38  
70/21  
80/27  
90/32  
100/38  
246  
50  
51  
51  
52  
17.3  
3.5  
3.6  
3.6  
3.6  
274  
51  
52  
53  
54  
19.3  
3.6  
3.7  
3.7  
3.8  
305  
53  
55  
56  
58  
21.4  
3.7  
3.9  
3.9  
4.1  
PSIG  
kg/cm2G  
TOTAL HEAT OF REJECTION FROM CONDENSER  
16600 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
2500 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]  
132 CU. IN (URC-12F)  
TOTAL HEAT OF REJECTION FROM COMPRESSOR  
CONDENSER VOLUME  
Note: Pressure data is recorded at 5 minutes into freezing cycle.  
The data not in bold should be used for reference only.  
We reserve the right to make changes in specifications and design without prior notice.  
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IV. Service Diagnosis  
1. No Ice Production  
Problem  
Possible Cause  
Remedy  
[1] The icemaker will not a) Power Supply  
start.  
1. OFF position.  
1. Move to ON position.  
2. Tighten.  
2. Loose connection.  
3. Bad contacts.  
3. Check for continuity and  
replace.  
4. Voltage too high.  
1. Blown.  
4. Check and get  
recommended voltage.  
1. Check for short circuit and  
replace.  
b) Fuse (Inside fused  
disconnect, if any)  
c) Control Switch  
1. OFF position.  
2. Bad contacts.  
1. Move to ICE position.  
2. Check for continuity and  
replace.  
d) Bin Control Thermostat 1. Tripped with bin filled with 1. Remove ice.  
ice.  
2. Ambient temperature too 2. Increase ambient  
cool.  
temperature.  
3. Set too warm.  
3. See "II.2.[d] Controls and  
Adjustments, 6) Bin  
Control."  
4. Bulb out of position.  
4. Place in position.  
5. Bad contacts or leaks in 5. Check for continuity and  
bulb.  
replace.  
e) High Pressure Control 1. Bad contacts.  
1. Check for continuity and  
replace.  
f) Transformer  
1. Thermal fuse blown or coil 1. Replace.  
winding opened.  
1. Loose connections or  
open.  
g) Wiring to Controller  
Board  
1. Check for continuity and  
replace.  
h) Thermistor  
1. Leads short-circuit or open 1. See "II.2.[d] Controls and  
and high temperature  
safety operates.  
Adjustments, 1) Defrost  
Control."  
i) Hot Gas Solenoid  
Valve  
1. Continues to open in  
freeze cycle and high  
temperature safety  
operates.  
1. Check for power off in  
freeze cycle and replace.  
43  
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Problem  
Possible Cause  
Remedy  
[1] Continued from  
previous page.  
j) Water Supply Line  
1. Water supply off and water 1. Check and get  
supply cycle does not  
recommended pressure.  
finish.  
2. Condenser water pressure 2. Check and get  
too low or off and pressure  
control opens and closes  
frequently to finally  
operate high temperature  
safety.  
recommended pressure.  
k) Water Solenoid  
1. Mesh filter or orifice gets 1. Clean.  
clogged and water supply  
cycle does not finish.  
2. Coil winding opened.  
3. Wiring to water valve.  
2. Replace.  
3. Check for loose  
connection or open, and  
replace.  
l) Controller Board  
1. Defective.  
1. See "II.2[e] Checking the  
Controller Board."  
m) Interlock Switch  
(Cleaning Valve)  
1. OFF Position  
2. Bad contacts.  
1. Move to ON position.  
2. Check for continuity and  
replace.  
[2] Water continues to  
be supplied, and the  
icemaker will not  
start.  
a) Float Switch  
1. Connector disconnected. 1. Place in position.  
2. Leads opened or defective 2. Check and replace.  
switch.  
3. Float does not move  
freely.  
3. Clean or replace.  
b) Controller Board  
c) Contactor  
1. Defective.  
1. Replace.  
1. Replace.  
1. Open coil or contacts  
worn.  
[3] Compressor will not a) Wash Switch  
start or stops  
1. WASH position.  
2. Bad contacts.  
1. Move to ICE position.  
2. Check and replace.  
1. Clean.  
operating.  
b) High Pressure  
1. Dirty air filter or  
condenser.  
Controller  
2. Ambient or condenser  
water temperature too  
warm.  
2. Reduce temperature.  
3. Refrigerant overcharged. 3. Recharge.  
4. Refrigerant line or  
components plugged.  
4. Clean and replace drier.  
5. Fan not operating. [Except 5. See chart 1.[6]  
water-cooled model]  
6. Condenser water pressure 6. Check and get  
too low or off. [Water-  
cooled model only]  
recommended pressure.  
44  
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Problem  
Possible Cause  
Remedy  
[3] Continued from  
previous page.  
c) Overload Protector  
1. Bad contacts.  
1. Check for continuity and  
replace.  
2. Voltage too low.  
2. Increase voltage.  
3. Refrigerant overcharged or 3. Recharge.  
undercharged.  
4. Line valve continues to  
close in freeze cycle and  
overload protector  
operates.  
4. Check line valve's  
operation in freeze cycle  
and replace.  
d) Starter  
1. Bad contacts.  
1. Check and replace.  
2. Replace.  
2. Coil winding opened.  
e) Start Capacitor or Run 1. Defective.  
Capacitor  
1. Replace.  
f) Magnetic Contactor  
1. Bad contacts.  
1. Check for continuity and  
replace.  
2. Coil winding opened.  
1. Wiring to compressor.  
2. Replace.  
g) Compressor  
1. Check for loose  
connection or open, and  
replace.  
2. Defective.  
2. Replace.  
3. Protector tripped.  
1. Defective.  
3. Reduce temperature.  
h) Controller Board  
1. See "II.2[e] Checking the  
Controller Board."  
i) Water Regulator [Water-1. Set too high.  
cooled model only]  
1. Adjust lower.  
[4] Water continues to  
be supplied in freeze  
cycle.  
a) Water Solenoid Valve 1. Diaphragm does not close. 1. Check for water leaks with  
icemaker off.  
b) Controller Board  
1. Defective.  
1. See "II.2[e] Checking the  
Controller Board."  
[5] No water comes from a) Water Supply Line  
spray tubes. Water  
1. Water pressure too low  
and water level in water  
tank too low.  
1. Check and get  
recommended pressure.  
pump will not start, or  
freeze cycle time is  
too short.  
b) Water Solenoid Valve 1. Dirty mesh filter or orifice 1. Clean.  
and water level in water  
tank too low.  
c) Water System  
1. Water leaks.  
1. Check connections for  
water leaks, and replace.  
2. Clogged.  
2. Clean.  
3. Pump out check valve  
leaking by.  
3. Check assembly and  
clean.  
45  
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Problem  
Possible Cause  
Remedy  
[5] Continued from  
previous page.  
d) Pump Motor  
1. Motor winding opened.  
2. Bearing worn out.  
1. Replace.  
2. Replace.  
3. Wiring to pump motor.  
3. Check for loose  
connection or open, and  
replace.  
4. Defective capacitor.  
4. Replace.  
5. Defective or bound  
impeller.  
5. Replace and clean.  
6. Mechanical seal worn out. 6. Check and replace.  
e) Controller Board  
a) Fan Motor  
1. Defective.  
1. See "II.2[e] Checking the  
Controller Board."  
[6] Fan Motor will not  
start, or is not  
operating.  
1. Motor winding opened.  
2. Bearing worn out.  
1. Replace.  
2. Replace.  
3. Wiring to fan motor.  
3. Check for loose  
connection or open, and  
replace.  
4. Defective capacitor.  
5. Fan blade bound.  
1. Defective.  
4. Replace.  
5. Check and replace.  
b) Controller Board  
1. See "II.2[e] Checking the  
Controller Board."  
[7] All components run, a) Refrigerant  
1. Undercharged.  
1. Check for leaks and  
recharge.  
but no ice is  
produced.  
2. Air or moisture trapped.  
1. Defective valve.  
2. Replace drier and  
recharge.  
b) Compressor  
1. Replace.  
c) Hot Gas Solenoid  
1. Continues to open in  
freeze cycle.  
1. Check and replace.  
Valve  
d) Line Valve  
1. Continues to close in  
freeze cycle.  
1. Check and replace.  
e) Water Solenoid Valve 1. Water solenoid valve is  
wide open during freeze.  
1. Check for water leaks with  
icemaker off.  
f) Water Supply Line  
[Water-cooled model  
only]  
1. Condenser water pressure 1. Check and get  
too low or off and pressure  
control opens and closes  
frequently.  
recommended pressure.  
46  
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2. Evaporator is Frozen Up  
Problem  
Possible Cause  
Remedy  
[1] Freeze cycle time is a) Float Switch  
too long.  
1. Leads short-circuit or  
defective switch.  
1. Check and replace.  
2. Float does not move  
freely.  
2. Clean or replace.  
b) Water Solenoid Valve 1. Diaphragm does not close. 1. Check for water leaks with  
icemaker off.  
c) Controller Board  
1. Defective.  
1. See "II.2[e] Checking the  
Controller Board."  
1. Clean.  
[2] All ice formed on  
evaporator does not  
fall into bin in harvest  
cycle.  
a) Evaporator  
1. Scaled up.  
b) Water Supply Line  
1. Water pressure too low.  
1. Check and get  
recommended pressure.  
c) Water Filter System  
1. Dirty/Restricted  
1. Replace filter.  
d) Water Solenoid Valve 1. Dirty mesh filter or orifice. 1. Clean.  
2. Diaphragm does not close. 2. Check for water leaks with  
icemaker off.  
e) Ambient and/or water 1. Too cool.  
temperature.  
1. Increase temperature.  
f) Line Valve  
1. Continues to open in  
1. Check operation in harvest  
cycle and replace.  
harvest cycle.  
1. Out of position or loose  
attachment.  
g) Thermistor  
1. See "V.11. Removal and  
Replacement of  
Thermistor."  
h) Controller Board  
1. Defrost timer is set too  
short.  
1. Adjust longer, referring to  
"II.2.[d] Controls and  
Adjustments, 2) Defrost  
Timer."  
2. Defective.  
2. See "II.2[e] Checking the  
Controller Board."  
[3] Other  
a) Spray Tubes  
1. Clogged.  
1. Clean  
2. Out of position.  
1. Dirty.  
2. Place in position.  
1. Clean.  
b) Water System  
c) Refrigerant  
1. Undercharged.  
1. Check for leaks and  
recharge.  
d) Expansion Valve  
1. Bulb out of position or  
loose attachment.  
1. Place in position.  
2. Defective.  
2. Replace.  
1. Replace.  
2. Replace.  
e) Hot Gas Solenoid  
Valve  
1. Coil winding opened.  
2. Plunger does not move.  
3. Wiring to hot gas valve.  
3. Check for loose  
connection or open, and  
replace.  
f) Water Supply Line  
g) Water Filter  
1. Too small; requires 1/2"  
OD line dedicated per  
machine.  
1. Increase water line size.  
1. Flow rate too small.  
1. Replace with filter that has  
larger flow rate.  
47  
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3. Low Ice Production  
Problem  
Possible Cause  
Remedy  
[1] Freeze cycle time is a) See chart 1.[3] and check high pressure controller and water regulator.  
long.  
b) See chart 2.[1] and check float switch, water solenoid valve and controller board.  
Harvest cycle time is  
long.  
[2]  
a) See chart 2.[2] and check evaporator, water supply line, water filter system, water  
solenoid valve, ambient and/or water temperature, line valve, thermistor, and  
controller board.  
4. Abnormal Ice  
Problem  
Possible Cause  
Remedy  
[1] Small cubes.  
a) Ice Cube Guide  
1. Out of position. Circulated 1. Place in position.  
water falls into bin.  
b) See chart 1.[5] and check water supply line, water solenoid valve, water system,  
pump motor, and controller board.  
c) Pump Out Check  
Valve  
1. Dirty.  
1. Clean.  
[2] Cloudy or irregular  
cubes.  
a) See chart 2.[1] and 2.[3], and check float switch, water solenoid valve, controller  
board, spray tubes, water system, refrigerant charge, and expansion valve.  
1. Dirty.  
1. Clean.  
b) Spray Guide  
c) Water Quality  
1. High hardness or contains 1. Install a water softener or  
impurities.  
filter.  
5. Other  
Problem  
Possible Cause  
Remedy  
[1] Icemaker will not  
stop when bin is filled  
with ice.  
a) Bin Control Thermostat 1. Set too cold.  
1. Adjust warmer.  
2. Defective.  
2. Replace.  
Abnormal noise.  
[2]  
a) Pump Motor  
b) Fan Motor  
1. Bearings worn out.  
1. Replace.  
1. Bearings worn out.  
2. Fan blade deformed.  
1. Replace.  
2. Replace fan blade.  
3. Fan blade does not move 3. Replace.  
freely.  
c) Compressor  
1. Bearings worn out or  
cylinder valve broken.  
1. Replace.  
2. Mounting pad out of  
position.  
2. Reinstall.  
d) Refrigerant Lines  
1. Rub or touch other lines or 1. Replace.  
surfaces.  
[3] Ice in storage bin  
often melts.  
a) Bin Drain  
1. Plugged.  
1. Clean.  
b) Icemker and Bin  
1. Drains not run separately. 1. Separate the drain lines.  
48  
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V. Removal and Replacement of Components  
IMPORTANT  
Ensure all components, fasteners and thumbscrews are securely in place after the  
equipment is serviced.  
IMPORTANT  
1. The Polyol Ester (POE) oils used in R-404A units can absorb moisture quickly.  
Therefore it is important to prevent moisture from entering the system when  
replacing or servicing parts.  
2. Always install a new filter drier every time the sealed refrigeration system is opened.  
3. Do not leave the system open for longer than 5 minutes when replacing or servicing  
parts.  
1. Service for Refrigerant Lines  
[a] Refrigerant Recovery  
The icemaker unit is provided with two refrigerant access valves one on the low-side and one on  
the high-side line. Using proper refrigerant practices recover the refrigerant from the access valves  
and store it in an approved container. Do not discharge the refrigerant into the atmosphere.  
[b] Evacuation and Recharge [R-404A]  
1) Attach charging hoses, a service manifold and a vacuum pump to the system. Be sure to  
connect charging hoses to both high and low -side access valves.  
IMPORTANT  
The vacuum level and vacuum pump may be the same as those for current  
refrigerants. However, the rubber hose and gauge manifold to be used for evacuation  
and refrigerant charge should be exclusively for POE oils.  
2) Turn on the vacuum pump. Never allow the oil in the vacuum pump to flow  
backward.  
3) Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period depends on  
pump capacity.  
4) Close the low-side valve and high-side valve on the service manifold.  
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5) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the high-side line.  
Remember to loosen the connection, and purge the air from the hose. For air-cooled and water-  
cooled models, see the nameplate for the required refrigerant charge. For remote air-cooled  
models, see the charge label in the machine compartment. Hoshizaki recommends only virgin  
refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.  
6) A liquid charge is recommended for charging an R-404A system. Invert the service  
cylinder. Open the high-side, service manifold valve.  
7) Allow the system to charge with liquid until the pressures balance.  
8) If necessary, add any remaining charge to the system through the low-side. Use a throttling  
valve or liquid dispensing device to add the remaining liquid charge through the low-side  
access port with the unit running.  
9) Close the two refrigerant access valves and disconnect the hoses and service manifold.  
10) Cap the access valves to prevent a possible leak.  
2. Brazing  
DANGER  
1. Refrigerant R-404A itself is not flammable at atmospheric pressure and  
temperatures up to 176° F.  
2. Refrigerant R-404A itself is not explosive or poisonous. However, when exposed to  
high temperatures (open flames) R-404A can be decomposed to form hydrofluoric  
acid and carbonyl fluoride both of which are hazardous.  
3. Always recover the refrigerant and store it in an approved container. Do not  
discharge the refrigerant into the atmosphere.  
4. Do not use silver alloy or copper alloy containing arsenic.  
5. Do not use R-404A as a mixture with pressurized air for leak testing. Refrigerant  
leaks can be detected by charging the unit with a little refrigerant, raising the  
pressure with nitrogen and using an electronic leak detector.  
Note: All brazing-connections inside the evaporator case are clear-paint coated. Sandpaper the  
brazing connections before unbrazing the components. Use a good abrasive cloth to  
remove coating.  
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3. Removal and Replacement of Compressor  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do not  
replace the drier until after all other repair or replacement has been made.  
Note: When replacing a compressor with a defective winding, be sure to install the new start  
capacitor and start relay supplied with the replacement compressor. Due to the ability of  
the POE oil in the compressor to absorb moisture quickly, the compressor must not be  
opened more than 15 minutes for replacement or service. Do not mix lubricants of  
different compressors even if both are charged with R-404A, except when they use the  
same lubricant.  
1) Turn off the power supply.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container.  
4) Remove the terminal cover on the compressor, and disconnect the compressor wiring.  
5) Remove the discharge and suction pipes using brazing equipment.  
6) Remove the hold-down bolts, washers and rubber grommets.  
7) Slide and remove the compressor. Unpack the new compressor package. Install the new  
compressor.  
8) Attach the rubber grommets of the prior compressor.  
9) Sandpaper the suction, discharge and process pipes.  
10) Place the compressor in position, and secure it using the bolts and washers.  
11) Remove plugs from the suction, discharge and process pipes.  
12) Braze the process, suction and discharge lines (Do not change this order), while purging with  
nitrogen gas flowing at a pressure of 3-4 PSIG.  
13) Install the new filter drier.  
14) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
15) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled models,  
see the nameplate for the required refrigerant charge. For remote air-cooled models, see the  
charge label in the machine compartment.  
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16) Connect the terminals, and replace the terminal cover in its correct position.  
17) Replace the panels in their correct positions.  
18) Turn on the power supply.  
4. Removal and Replacement of Drier  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do not  
replace the drier until after all other repair or replacement has been made.  
1) Turn off the power supply.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container.  
4) Remove the drier.  
5) Install the new drier with the arrow on the drier in the direction of the refrigerant flow. Use  
nitrogen gas at a pressure of 3 - 4 PSIG when brazing the tubings.  
6) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
7) Evacuate the system and charge it with refrigerant. For air-cooled and water-cooled models, see  
the nameplate for the required refrigerant charge. For remote air-cooled models, see the charge  
label in the machine compartment.  
8) Replace the panels in their correct positions.  
9) Turn on the power supply.  
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5. Removal and Replacement of Expansion Valve  
IMPORTANT  
Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up  
at the expansion valve. Always install a new drier every time the sealed refrigeration  
system is opened. Do not replace the drier until after all other repair or replacement  
has been made.  
1) Turn off the power supply.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container.  
4) Remove the insulation and the expansion valve bulb on the suction line.  
5) Remove the expansion valve cover, and disconnect the expansion valve using  
brazing equipment.  
6) Braze the new expansion valve, with nitrogen gas flowing at a pressure of 3-4 PSIG.  
WARNING  
1. Do not heat the wall. Place a steel barrier for protection.  
2. Always protect the valve body by using a damp cloth to prevent the valve from  
overheating. Do not braze with the valve body exceeding 250°F.  
7) Install the new drier.  
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
9) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled models,  
see the nameplate for the required refrigerant charge. For remote air-cooled models, see the  
charge label in the machine compartment.  
10) Attach the bulb to the suction line in position. Be sure to secure it with clamps and to insulate it.  
11) Place the new set of expansion valve covers in position.  
12) Replace the panels in their correct position.  
13) Turn on the power supply.  
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6. Removal and Replacement of Hot Gas Valve and Line Valve  
CAUTION  
Always use a copper tube of the same diameter and length when replacing the hot gas  
lines; otherwise the performance may be reduced.  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do not  
replace the drier until after all other repair or replacement has been made.  
1) Turn off the power supply.  
2) Remove the panels.  
3) Recover the refrigerant and store it in an approved container.  
4) Remove the screw and the solenoid.  
5) Disconnect the hot gas valve or line valve using brazing equipment.  
6) Install the new valve.  
WARNING  
Always protect the valve body by using a damp cloth to prevent the valve from  
overheating. Do not braze with the valve body exceeding 250°F.  
7) Install the new drier.  
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
9) Evacuate the system and charge it with refrigerant. For air-cooled and water-cooled models, see  
the nameplate for the required refrigerant charge. For remote air-cooled models, see the charge  
label in the machine compartment.  
10) Cut the leads of the solenoid allowing enough lead length to reconnect using closed end  
connectors.  
11) Connect the new solenoid leads.  
12) Attach the solenoid to the valve body, and secure it with a screw.  
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13) Replace the panels in their correct positions.  
14) Turn on the power supply.  
7. Removal and Replacement of Evaporator  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do not  
replace the drier until after all other repair or replacement has been made.  
1) Turn off the power supply.  
2) Remove the panels and the top insulation over the evaporator.  
3) Recover the refrigerant and store it in an approved container.  
4) Remove the spray tubes and the insulations at the Ushaped notch where the refrigeration  
tubings go through the molded chassis.  
5) Remove the insulation tube and disconnect the evaporator inlet tubing at the tee next to the  
expansion valve.  
6) Lift up the evaporator, and disconnect the evaporator outlet tubing.  
7) Install the new evaporator.  
8) Install the new drier.  
9) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
10) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled models,  
see the nameplate for the required refrigerant charge. For remote air-cooled models, see the  
charge label in the machine compartment.  
11) Replace the removed parts in the reverse order of which they were removed.  
12) Replace the top insulation and the panels in their correct positions.  
13) Turn on the power supply.  
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8. Removal and Replacement of Water Regulating Valve - Water-Cooled Model  
Only  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do  
not replace the drier until after all other repair or replacement has been made.  
1) Turn off the power supply.  
2) Close the water supply line shut-off valve.  
3) Remove the panels.  
4) Recover the refrigerant and store it in an approved container.  
5) Disconnect the capillary tube at the condenser outlet using brazing equipment.  
6) Disconnect the flare-connections of the valve.  
7) Remove the screws and the valve from the bracket.  
8) Install the new valve, and braze the capillary tube.  
9) Install the new drier.  
10) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
11) Evacuate the system and charge it with refrigerant. See the nameplate for the  
required refrigerant charge.  
12) Connect the flare-connections.  
13) Open the water supply line shut-off valve.  
14) Check for water leaks.  
15) Replace the panels in their correct positions.  
16) Turn on the power supply.  
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9. Adjustment of Water Regulating Valve - Water-Cooled Model Only  
The water regulating valve (also called water regulator) is factory-adjusted. No  
adjustment is required under normal use. Adjust the water regulator, if necessary, using  
the following procedures:  
1) Attach a pressure gauge to the high-side line of the system. Or prepare a  
thermometer to check for the condenser drain temperature.  
2) Rotate the adjustment screw by using a flat blade screwdriver, so that the pressure  
gauge shows 270 PSIG or the thermometer reads 104115° F, 5 minutes after a  
freeze cycle or icemaking process starts. When the pressure exceeds 270 PSIG, or  
the condenser drain temperature exceeds 115° F, rotate the adjustment screw  
counterclockwise. See Fig. 1.  
3) Check that the pressure or the condenser drain temperature holds a stable setting.  
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10. Removal and Replacement of Condensing Pressure Regulator (C.P.R.) -  
Remote Air-Cooled Model Only  
IMPORTANT  
Always install a new drier every time the sealed refrigeration system is opened. Do not  
replace the drier until after all other repair or replacement has been made.  
1) Turn off the power supply.  
2) Remove the panels from the remote condenser unit.  
3) Recover the refrigerant and store it in an approved container.  
4) Before heating, break off the stub on the dome to release the dome charge.  
5) Disconnect the C.P.R. using brazing equipment.  
6) Install the new C.P.R. Use nitrogen gas at a pressure of 3-4 PSIG when brazing the C.P.R.  
WARNING  
Always protect the C.P.R. body by using a damp cloth to prevent the C.P.R. from  
overheating. Do not braze with the C.P.R. body exceeding 250°F.  
7) Install the new drier in the icemaker.  
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.  
9) Evacuate the system and charge it with refrigerant. See the charge label in the machine  
compartment in the icemaker.  
10) Replace the panels in their correct positions.  
11) Turn on the power supply.  
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11. Removal and Replacement of Thermistor  
CAUTION  
1. Fragile, handle very carefully.  
2. Always use a recommended sealant (high thermal conductive type), Model  
KE4560RTV manufactured by Shinetsu Silicone, Part Code 60Y000-11, or Part  
Code 4A0683-01 equivalent.  
3. Always use a recommended foam insulation (non-absorbent type) or equivalent.  
1) Turn off the power supply.  
ThermistorLead  
CableTie  
2) Remove the panels.  
3) Remove the control box cover.  
4) Disconnect the thermistor leads from  
the K3 connector on the controller board.  
5) Remove the plastic cable ties, foam  
insulation, thermistor holder and  
thermistor. See Fig. 2.  
FoamInsulation  
ThermistorHolder  
Fig. 2  
6) Scrape away the old sealant on the  
thermistor holder and the suction pipe.  
7) Wipe off moisture or condensation on the suction pipe.  
8) Smoothly apply recommended sealant (KE4560RTV, Part Code 60Y000-11 or  
4A0683-01) to the thermistor holder concave.  
9) Attach the new thermistor to the suction pipe very carefully to prevent damage to  
the leads. And secure it using the thermistor holder and recommended foam  
insulation.  
10) Secure the insulation using the plastic cable ties.  
11) Connect the thermistor leads through the bushing of the control box to the K3 connector on the  
controller board.  
Note: Do not cut the leads of the thermistor while installing it.  
12) Replace the control box cover and the panels in their correct positions.  
13) Turn on the power supply.  
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12. Removal and Replacement of Fan Motor  
Note: When replacing a fan motor with defective winding, it is recommended that a new  
capacitor be installed.  
1) Turn off the power supply.  
2) Remove the panels.  
3) Remove the junction box cover from the remote condenser unit (remote air-cooled model).  
4) Remove the closed end connectors from the fan motor leads.  
5) Remove the fan motor bracket and fan motor.  
6) Install the new fan motor, and replace the removed parts in the reverse order of which they were  
removed.  
7) Replace the panels in their correct positions.  
8) Replace the junction box cover in its correct position (remote air-cooled model).  
9) Turn on the power supply.  
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13. Removal and Replacement of Water Valve  
1) Turn off the power supply.  
2) Close the water supply line shut-off valve.  
3) Remove the front panel.  
4) Remove the valve outlet tubing by releasing the clamp.  
5) Remove the bracket from the unit.  
6) Remove the fitting nut and water valve.  
7) Disconnect the terminals from the water valve.  
8) Install the new water valve, and replace the removed parts in the reverse order of  
which they were removed.  
9) Open the water supply line shut-off valve.  
10) Turn on the power supply.  
11) Check for leaks.  
12) Replace the front panel in its correct position.  
14. Removal and Replacement of Pump Moto
1) Turn off the power supply.  
2) Remove the front panel.  
3) Drain the water tank by removing the insulation panel  
and the cap at the front of the ice dropping hole.  
See Fig. 3.  
4) Replace the removed parts in their correct positions.  
5) Disconnect the pump suction and discharge hoses.  
6) Remove the screws and the pump motor bracket.  
Fig. 3  
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7) Remove the closed end connectors from the pump motor leads.  
8) Remove the two screws and the pump motor bracket.  
9) Remove the pump housing and check the impeller.  
10) If the impeller is defective, install a new impeller.  
11) Install the new motor or new parts, and replace the removed parts in the reverse  
order of which they were removed.  
12) Turn on the power supply and check for leaks.  
13) Replace the front panel in its correct position.  
15. Removal and Replacement of Spray Tubes  
1) Turn off the power supply.  
2) Remove the front panel and the insulation panel.  
3) Remove the rubber hoses from the spray tubes (water supply pipe).  
4) Release the clamps and disconnect the rubber hoses.  
5) Remove the spray tubes by squeezing the side tabs.  
6) Install the new spray tubes, and replace the removed parts in the reverse order of which they  
were removed.  
7) Replace the panels in their correct positions.  
8) Turn on the power supply.  
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VI. Maintenance and Cleaning Instructions  
IMPORTANT  
Ensure all components, fasteners and thumbscrews are securely in place after any  
maintenance or cleaning is done to the equipment.  
1. Preparing the Icemaker for Long Storage  
WARNING  
When shutting off the icemaker for an extended time, drain out all water from the water  
tank and remove the ice from the storage bin. The storage bin should be cleaned and  
dried. Drain the icemaker to prevent damage to the water supply line at sub-freezing  
temperatures, using air or carbon dioxide. Shut off the icemaker until the proper  
ambient temperature is resumed.  
Note: When the icemaker is not used for two or three days, it is sufficient to only move the  
control switch to the OFFposition, unless the icemaker will be at sub-freezing  
temperatures.  
[1] On water-cooled model only, first remove the water from the water-cooled condenser:  
1) Remove the front panel.  
2) Move the control switch on the control box to the OFFposition.  
3) Wait 3 minutes.  
4) Move the control switch to the ICEposition.  
5) Allow 5 minutes for the icemaker to fill with water and the water pump to start  
operating.  
6) Close the water-cooled condenser water supply line shut-off valve.  
7) Open the drain valve for the water-cooled condenser water supply line.  
8) Allow the line to drain by gravity.  
9) Attach compressed air or carbon dioxide supply to the condenser water line drain valve.  
10) Quickly blow the water-cooled condenser out using compressed air or carbon dioxide until  
water stops coming out.  
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[2] Remove the water from the potable water supply line:  
1) Remove the front panel. (Except water-cooled model)  
2) Move the control switch on the control box to the OFFposition.  
3) Wait 3 minutes.  
4) Close the potable water supply line shut-off valve and open the potable water supply line drain  
valve.  
5) Allow the line to drain by gravity.  
6) Attach compressed air or carbon dioxide supply to the potable water line drain valve.  
7) Move the control switch to the ICEposition.  
8) Blow the potable water line out using compressed air or carbon dioxide.  
[3] Drain the potable water tank:  
1) Turn off the power supply.  
2) Move the control switch to the OFF”  
position.  
3) Drain the water tank by removing the  
insulation panel and the cap located  
on the front bottom part of the ice  
dropping hole. See Fig. 4.  
4) Replace the removed parts in their  
correct positions.  
5) Remove all ice from the storage bin,  
and clean the storage bin.  
6) Replace the front panel in its correct  
position.  
Fig. 4  
7) Close the drain valve.  
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2. Cleaning and Sanitizing Procedures  
IMPORTANT  
Ensure all components, fasteners and thumbscrews are securely in place after any  
maintenance or cleaning is done to the equipment.  
WARNING  
1. HOSHIZAKI recommends cleaning this unit at least once a year. More frequent  
cleaning, however, may be required in some existing water conditions.  
2. To prevent injury to individuals and damage to the icemaker, do not use ammonia  
type cleaners.  
3. Always wear liquid-proof gloves to prevent the cleaning and sanitizing solutions  
from coming into contact with skin.  
IMPORTANT  
1. The cleaning valve is used to allow solution flow to the inside of the evaporator  
during the cleaning and sanitizing operation. It should be closed for all icemaking  
operation. The compressor will not operate unless this valve is completely closed.  
2. To open the cleaning valve, the valve handle should be parallel to the valve body.  
To close the valve, the valve handle should be at a right angle to the valve body.  
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[a] Cleaning Procedure  
1) Dilute 27 fl. oz. of the recommended cleaner Hoshizaki Scale Awayor LIME-A-WAY”  
(Economics Laboratory, Inc.) with 5 gal. of water.  
2) Remove all ice from the evaporator and the storage bin.  
Note: To remove cubes on the evaporator, turn off the power supply and turn it on after  
3 minutes. The defrost cycle starts and the cubes will be removed from the evaporator.  
3) Turn off the power supply.  
4) Remove the front panel and then remove the insulation panel by first removing the thumbscrew,  
lifting the panel slightly and pulling it toward you.  
5) Drain the water tank by removing the cap located on the front bottom part of the ice dropping  
hole. See Fig. 4.  
6) After tank has drained, replace the removed parts in their correct positions.  
7) Pour the cleaning solution into the water tank.  
8) Fully open the cleaning valve on the left side wall of the machine compartment.  
9) Move the control switch on the control box to the WASHposition.  
10) Replace the insulation panel and the front panel in their correct positions.  
11) Turn on the power supply, and start the washing process.  
12) Turn off the power supply after 30 minutes.  
13) Remove the front panel and the insulation panel.  
14) Drain the water tank. (See step 5 above).  
15) Replace the cap and the insulation panel in their correct positions.  
16) Move the control switch to the ICEposition.  
17) Close the cleaning valve.  
Note: The icemaker will not operate unless the cleaning valve is completely closed.  
18) Replace the front panel in its correct position.  
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19) Turn on the power supply to fill the water tank with water.  
20) Turn off the power supply after 3 minutes.  
21) Remove the front panel, and fully open the cleaning valve.  
22) Move the control switch to the WASHposition.  
23) Replace the front panel in its correct position.  
24) Turn on the power supply to rinse off the cleaning solution.  
25) Turn off the power supply after 5 minutes.  
26) Remove the front panel and insulation panel.  
27) Drain the water tank by removing the cap located on the front bottom part of the ice  
dropping hole. See Fig. 4.  
28) After the tank has drained, replace the removed parts in their correct positions.  
Note: Do not replace the insulation panel when you proceed to [b] Sanitizing  
Procedure.”  
29) Repeat the above steps 16) through 28) three more times to rinse thoroughly.  
Note: If you do not sanitize the icemaker, go to step 9) in [b] Sanitizing Procedure.”  
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[b] Sanitizing Procedure - Following Cleaning Procedure  
1) Dilute a 5.25% sodium hypochlorite solution (chlorine bleach) with water (Add 2.5 fl. oz. of  
sanitizer to 5 gal. of water).  
2) Remove the insulation panel, if it is in its normal position.  
3) Pour the sanitizing solution into the water tank.  
4) Replace the insulation panel and the front panel in their correct positions.  
Note: Make sure that the control switch is in the WASHposition and the cleaning valve is  
open.  
5) Turn on the power supply, and start the sanitizing process.  
6) Turn off the power supply after 15 minutes.  
7) Remove the front panel and, if necessary, the insulation panel.  
8) Drain the water tank. See the step 5) in [a] Cleaning Procedure.”  
9) Replace the removed parts and the insulation panel in their correct positions.  
10) Repeat the above steps 16) through 28) in [a] Cleaning Proceduretwo  
times to rinse thoroughly.  
11) Close the cleaning valve.  
12) Move the control switch to the ICEposition.  
13) Replace the front panel in its correct position.  
14) Clean the storage bin with water.  
15) Turn on the power supply, and start the automatic icemaking process.  
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3. Maintenance  
IMPORTANT  
This icemaker must be maintained individually, referring to the instruction manual and  
labels provided with the icemaker.  
1) Stainless Steel Exterior  
To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp  
cloth containing a neutral cleaner to wipe off oil or dirt build up.  
2) Storage Bin and Scoop  
Wash your hands before removing ice. Use the plastic scoop provided.  
The storage bin is for ice use only. Do not store anything else in the bin.  
Keep the scoop clean. Clean it by using a neutral cleaner and rinse thoroughly.  
Clean the bin liner by using a neutral cleaner. Rinse thoroughly after cleaning.  
3) Condenser (Except water-cooled model)  
Check the condenser once a year, and clean if required by using a brush or vacuum cleaner.  
More frequent cleaning may be required depending on the location of the icemaker.  
4) Air Filters  
Plastic mesh air filters remove dirt or dust from the air and keep the condenser from getting  
clogged. As the filters get clogged, the icemakers performance will be reduced. Check the  
filters at least twice a month. When clogged, use warm water and a neutral cleaner to wash the  
filters.  
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