Hoshizaki KM-1300SAF3, KM-1300SWF, KM-1300SWF3, KM-1300SAF, KM-1300SRF3 SERVICE MANUAL

NO:
ISSUED:
REVISED:

73076

OCT . 8, 1998

DEC. 14, 2003

HOSHIZAKI

STACKABLE CRESCENT CUBER

MODELS

KM-1300SAF
KM-1300SWF
KM-1300SRF
KM-1300SAF3
KM-1300SWF3
KM-1300SRF3

SERVICE MANUAL

IMPORTANT

Only qualified service technicians should attempt to service or maintain this icemaker.
No such service or maintenance should be undertaken until the technician has
thoroughly read this Service Manual.

HOSHIZAKI provides this manual primarily to assist qualified service technicians in the
service and maintenance of the icemaker.

Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call or write to the HOSHIZAKI Technical Support Department for
assistance.

HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City , GA 30269

Attn: HOSHIZAKI T echnical Support Department

Phone: [phone] T echnical Service

[phone]

Fax: [phone]

NOTE: T o expedite assistance, all correspondence/communication MUST include the following

information:

• Model Number

• Serial Number

• Complete and detailed explanation of the problem

2

Please review this manual. It should be read carefully before the icemaker is serviced
or maintenance operations 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

PAGE

I. SPECIFICATIONS .................................................................................................... 5

1. KM-1300SAF (Air-cooled)................................................................................... 5

2. KM-1300SWF (Water-cooled)............................................................................. 6

3. KM-1300SRF (Remote air-cooled)...................................................................... 7

4. KM-1300SAF3 (Air-cooled, 3 phase) .................................................................. 8

5. KM-1300SWF3 (Water-cooled, 3 phase) ............................................................ 9

6. KM-1300SRF3 (Remote air-cooled, 3 phase)................................................... 10

7. CONDENSING UNIT, URC-12F ....................................................................... 11

II. GENERAL INFORMATION .................................................................................... 13

1. CONSTRUCTION ............................................................................................. 13

[a] KM-1300SAF/3............................................................................................ 13

[b] KM-1300SWF/3........................................................................................... 14

[c] KM-1300SRF/3............................................................................................ 15

2. CONTROLLER BOARD.................................................................................... 1 6

[a] SOLID-STATE CONTROL .......................................................................... 16

[b] CONTROLLER BOARD.............................................................................. 16

[c] SEQUENCE ................................................................................................ 23

[d] CONTROLS AND ADJUSTMENTS ............................................................ 26

[e] CHECKING THE CONTROLLER BOARD ................................................... 29

III. TECHNICAL INFORMATION............................................................................... 32

1. WATER CIRCUIT AND REFRIGERANT CIRCUIT........................................... 32

[a] KM-1300SAF/3............................................................................................ 32

[b] KM-1300SWF/3........................................................................................... 33

[c] KM-1300SRF/3............................................................................................ 34

2. WIRING DIAGRAMS......................................................................................... 35

[a] KM-1300SAF............................................................................................... 35

[b] KM-1300SWF.............................................................................................. 36

[c] KM-1300SRF............................................................................................... 37

[d] KM-1300SAF3............................................................................................. 38

[e] KM-1300SWF3............................................................................................ 39

[f] KM-1300SRF3 ............................................................................................. 40

3. TIMING CHART ................................................................................................ 41

4. PERFORMANCE DATA.................................................................................... 43

[a] KM-1300SAF............................................................................................... 43

[b] KM-1300SWF.............................................................................................. 44

[c] KM-1300SRF............................................................................................... 45

[d] KM-1300SAF3............................................................................................. 46

[e] KM-1300SWF3............................................................................................ 47

[f] KM-1300SRF3 ............................................................................................. 48

3

IV. SERVICE DIAGNOSIS ...........................................................................................49

1. NO ICE PRODUCTION........................................................................................49

2. EVAPORATOR IS FROZEN UP..........................................................................5 2

3. LOW ICE PRODUCTION.....................................................................................53

4. ABNORMAL ICE..................................................................................................53

5. OTHERS ..............................................................................................................53

V. REMOVAL AND REPLACEMENT OF COMPONENTS ..........................................54

1. SERVICE FOR REFRIGERANT LINES...............................................................5 4

[a] REFRIGERANT RECOVERY ........................................................................ 54

[b] EVACUATION AND RECHARGE..................................................................54

2. BRAZING .............................................................................................................55

3. REMOVAL AND REPLACEMENT OF COMPRESSOR ......................................56

4. REMOVAL AND REPLACEMENT OF DRIER.....................................................57

5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE ..............................5 8

6. REMOVAL AND REPLACEMENT OF HOT GAS VALVE, ......................................

LINE VALVE AND GAS VALVE.......................................................................... 59

7. REMOVAL AND REPLACEMENT OF EVAPORATOR .......................................60

8. REMOVAL AND REPLACEMENT OF WATER-REGULATING VALVE..................

- WATER COOLED MODEL ONLY .................................................................... 61

9. ADJUSTMENT OF WATER-REGULATING VALVE................................................

- WATER COOLED MODEL ONLY .................................................................... 62

10. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE .......................

REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY .................. 63

11. REMOVAL AND REPLACEMENT OF THERMISTOR.........................................64

12. REMOVAL AND REPLACEMENT OF FAN MOTOR ...........................................65

13. REMOVAL AND REPLACEMENT OF WATER VALVE....................................... 66

14. REMOVAL AND REPLACEMENT OF PUMP MOTOR........................................66

15. REMOVAL AND REPLACEMENT OF SPRAY TUBES .......................................67

VI. MAINTENANCE AND CLEANING INSTRUCTIONS.............................................. 68

1. PREPARING THE ICEMAKER FOR LONG STORAGE......................................68

2. CLEANING PROCEDURE...................................................................................70

[a] CLEANING PROCEDURE.............................................................................71

[b] SANITIZING PROCEDURE ...........................................................................73

3. MAINTENANCE...................................................................................................74

4

I. SPECIFICATIONS

1. KM-1300SAF (Air-cooled)

AC SUPPLY VOLTAGE
AMPERAGE
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )

WATER gal./24 HR. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

208-230/60/1 ( 3 wire with neutral for 115 V )

12.6 A ( 5 min. freeze AT 104° F / WT 80° F )
20A
20A

Ambient Water Temp. (°F)
Temp. (°F) 50 70 90
70 *1283 (582) 1238 (562) 1135 (515)
80
90 1238 (562) *1129 (512) 1011 (458)
100 1203 (546) 1101 (500) *902 (409)

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90° F / 70° F 70° F / 50° F
2235 ( 4.75 ) 2180 ( 4.08 )
247 ( 21.9 ) 479 ( 37.3 )
48" x 273¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel ( Rear )
Net 275 lbs. ( 125 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet 1¦2" FPT
Outlet 3¦4" FPT

3

¦8" ID Pipe
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
N/A
Thermostat
Hermetic, Model CS14K6E-PFV
Air-cooled, Fin and Tube type
Vertical type, Stainless Steel and Copper
Thermostatic Expansion Valve
R404A, 3 lbs. 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
VOLTAGE RANGE 187 - 264 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

1249 (566) 1178 (535) 1053 (478)

We reserve the right to make changes in specifications and design without prior notice.

5

2. KM-1300SWF (Water-cooled)

AC SUPPLY VOLTAGE

AMPERAGE

MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )
WATER gal./24 HR. ( gal./100 lbs. )
WATER COOLED CONDENSER

gal./24 hr. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

We reserve the right to make changes in
specifications and design without prior notice.

208-230/60/1 ( 3 wire with neutral for 115 V )

9.7 A ( 5 MIN. Freeze AT 104° F / WT 80° F )
20A
20A

Ambient Water Temp. (°F)
Temp. (°F) 50 70 90

70
80
90
100

*1252 ( 568 ) 1233 ( 559 ) 1176 ( 533 )

1238 ( 561 ) 1209 ( 548 ) 1134 ( 514 )

1233 ( 559 ) *1188 ( 539 ) 1119 ( 508 )

1211 ( 549 ) 1172 ( 532 ) 1056 ( 479 )

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90° F / 70° F 70° F / 50° F
2050 ( 4.0 ) 1975 ( 3.8 )
325 ( 27.4 ) 623 ( 49.8 )
1521 ( 128 ) 964 ( 77 )

48" x 273¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel ( Rear )
Net 265 lbs. ( 120 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet
Outlet

1

¦2" FPT Condenser Inlet1¦2" FPT

3

¦4" FPT Condenser Outlet3¦8" FPT

3

¦8" ID Pipe
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
Water Regulator
Thermostat
Hermetic, Model CS14K6E-PFV
Water-cooled, Tube in Tube type
Vertical type, Stainless Steel and Copper
Thermostatic ExpansionValve
R404A, 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
VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

6

3. KM-1300SRF (Remote air-cooled)

AC SUPPLY VOLTAGE
AMPERAGE
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION REFERENCE
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )

WATER gal./24 HR. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER

EVAPORATOR
REFRIGERANT CONTROL

REFRIGERANT CHARGE

DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

We reserve the right to make changes in
specifications and design without prior notice.

208-230/60/1 ( 3 wire with neutral for 115 V )

14.5 A ( 5 min. freeze AT 104° F / WT 80° F )
20A
20A
Ambient Water Temp. (°F)
Temp. (°F) 50 70 90
70 *1296 (588) 1248 (566) 1173 (532)
80
90
100

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90°F/70°F 70°F/50°F
2350 ( 4.98 ) 2300 ( 4.26 )
273 ( 24.1 ) 456 ( 35.2 )
48" x 273¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel (Rear)
Net 255 lbs. ( 116 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet 1¦2" FPT
Outlet 3¦4" FPT

Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
N/A
Thermostat
Hermetic, Model CS14K6E-PFV
Air-cooled remote, Condenser Unit URC-12F
recommended
Vertical type, Stainless Steel and Copper
Thermostatic Expansion Valve,
Condensing Pressure Regulator on URC-12F
R404A, 11 lbs. 7 oz. ( 5200 g. )
( Ice maker 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
N/A
Ice Storage Bin, Remote Condenser Unit
VOLTAGE RANGE 187 - 264 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

1260 (571) 1185 (538) 1105 (501)

1248 (566) *1133 (514) 1053 (478)
1230 (558) 1114 (505) *980 (445)

3¦8" ID Pipe

7

4. KM-1300SAF3 (Air-cooled)

AC SUPPLY VOLTAGE
AMPERAGE
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )

WATER gal./24 HR. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

208-230/60/3

7.8 A ( 5 min. freeze AT 104° F / WT 80° F )
20A
20A

Ambient Water Temp. (°F)
Temp. (°F) 50 70 90
70 *1320 ( 599 )
80

1272 ( 577 ) 1174 ( 533 ) 1060 ( 481 )

1257 ( 570 ) 1153 ( 523 )

90 1257 ( 570 ) *1105 ( 501 ) 993 ( 450 )
100 1230 ( 558 ) 1079 ( 489 ) *890 ( 404 )

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90° F / 70° F 70° F / 50° F
2275 ( 5.0 ) 2150 ( 3.9 )
292 ( 21.9 ) 488 ( 37.3 )
48" x 273¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel ( Rear )
Net 275 lbs. ( 125 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet 1¦2" FPT
Outlet 3¦4" FPT

3

¦8" ID Pipe
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
N/A
Thermostat
Hermetic, Model CS14K6E-TF5
Air-cooled, Fin and Tube type
Vertical type, Stainless Steel and Copper
Thermostatic ExpansionValve
R404A, 3 lbs. 14 oz. ( 1750 g. )
High 467 PSIG, Low 230 PSIG
High Voltage Cut-out; Low Voltage Cut-out (Internal)
Auto-reset Overload Protector ( Internal )
Auto-reset High Pressure Control Switch
Float Switch
N/A
Ice Storage Bin
VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

We reserve the right to make changes in specifications and design without prior notice.

8

5. KM-1300SWF3 (Water-cooled)

AC SUPPLY VOLTAGE

AMPERAGE

MINIMUM CIRCUIT AMP ACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )
WATER gal./24 HR. ( gal./100 lbs. )
WATER COOLED CONDENSER

gal./24 hr. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

208-230/60/3

6.9 A ( 5 MIN. Freeze AT 104° F / WT 80° F )
20A
20A

Ambient Water Temp. (°F)
Temp. (°F) 50 70 90

70
80

90
100

*1301 ( 590 ) 1273 ( 577 ) 1205 ( 547 )
1279 ( 580 ) 1235 ( 560 ) 1152 ( 523 )
1273 ( 577 ) *1204 ( 546 ) 1126 ( 511 )
1250 ( 567 ) 1186 ( 538 ) *1055 ( 479)

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90° F / 70° F 70° F / 50° F
2125 ( 4.0 ) 2075 ( 3.8 )
342 ( 27.7 ) 648 ( 49.8 )
1372 ( 112 ) 885 ( 68 )

48" x 273¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel ( Rear )
Net 265 lbs. ( 120 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet
Outlet

1

¦2" FPT Condenser Inlet1¦2" FPT

3

¦4" FPT Condenser Outlet3¦8" FPT

3

¦8" ID Pipe
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
Water Regulator
Thermostat
Hermetic, Model CS14K6E-TF5
Water-cooled, Tube in Tube type
Vertical type, Stainless Steel and Copper
Thermostatic ExpansionValve
R404A, 2 lb. 2 oz. ( 950 g. )
High 427 PSIG, Low 230 PSIG
High Voltage Cut-out, Low Voltage Cut-out ( Internal )
Auto-reset Overload Protector ( Internal )
Auto-reset High Pressure Control Switch
Float Switch
N/A
Ice Storage Bin
VOLTAGE RANGE 187 - 253 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

We reserve the right to make changes in specifications and design without prior notice.

9

6. KM-1300SRF3 (Remote air-cooled)

AC SUPPLY VOLTAGE
AMPERAGE
MINIMUM CIRCUIT AMPACITY
MAXIMUM FUSE SIZE
APPROX. ICE PRODUCTION REFERENCE
PER 24 HR.

lbs./day ( kg./day )
Reference without *marks

SHAPE OF ICE
ICE PRODUCTION PER CYCLE
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION

ELECTRIC W ( KWH/100 lbs. )

WATER gal./24 HR. ( gal./100 lbs. )
EXTERIOR DIMENSIONS ( WxDxH )
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

CUBE CONTROL SYSTEM
HARVESTING CONTROL SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER

EVAPORATOR
REFRIGERANT CONTROL

REFRIGERANT CHARGE

DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED

- REQUIRED

OPERATION CONDITIONS

We reserve the right to make changes in
specifications and design without prior notice.

208-230/60/3

10.8 A ( 5 min. freeze AT 104° F / WT 80° F )
20A
20A
Ambient Water Temp. (°F)
Temp. (°F) 50 70 90
70 *1308 (593) 1282 (581) 1203 (546)
80

1288 (584) 1247 (566) 1145 (520)
90 1282 (581) *1218 (552) 1125 (510)
100 1252 (568) 1196 (543)

*1039 (471)

Crescent Cube

30.1 lbs. ( 13.7 kg. ) 1440 pcs.
N/A
90°F/70°F 70°F/50°F
2300 ( 4.53 )2270 ( 4.17 )
252 ( 20.7 ) 463 ( 35.4 )

3

48" x 27

¦8" x 273¦8" ( 1219 x 695 x 695 mm. )
Stainless steel, Galvanized Steel (Rear)
Net 255 lbs. ( 116 kg. ) Shipping 315 lbs. ( 143 kg. )
Permanent Connection
Inlet

1

¦2" FPT

Outlet 3¦4" FPT

3¦8" ID Pipe
Float Switch
Hot Gas and Water, Thermistor and Timer
Timer Controlled, Overflow Pipe
N/A
Thermostat
Hermetic, Model CS14K6E-TF5
Air-cooled remote, Condenser Unit URC-12F
recommended
Vertical type, Stainless Steel and Copper
Thermostatic Expansion Valve,
Condensing Pressure Regulator on URC-12F
R404A, 11 lbs. 7 oz. ( 5200 g. )
( Ice maker 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
N/A
Ice Storage Bin, Remote Condenser Unit
VOLTAGE RANGE 187 - 264 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESS. 10 - 113 PSIG

10

7. CONDENSING UNIT

URC-12F

11

MODEL: URC-12F

SPECIFICATIONS

EXTERIOR

DIMENSIONS (W x D x H)

REFRIGERANT CHARGE

URC-12F

WEIGHT

CONNECTIONS

REFRIGERANT
ELECTRICAL

CONDENSER

HEAD PRESSURE CONTROL

AMBIENT CONDITION

Galvanized Steel

35 - 11/16” x 15-11/16” x 21-15/16”
(907.2 x 398 x 557.8 mm)

R404A 4 lbs. 7 oz. (2000 g)

Net 80 lbs. (36 kg)
Shipping 87 lbs. (39 kg)

One Shot Couplings (Aeroquip)
Permanent Connection

Air-cooled

Condensing Pressure Regulator

Min. -20°F - Max. +122°F
(-29°C to +50°C)
Outdoor use

12

II. GENERAL INFORMATION

1. CONSTRUCTION

[a] KM-1300SAF/3

13

[b] KM-1300SWF/3

14

[c] KM-1300SRF/3

15

2. CONTROLLER BOARD

[a] SOLID-STATE CONTROL

1) A HOSHIZAKI exclusive solid-state control is employed in KM-1300SAF,
KM-1300SWF, KM-1300SRF, KM-1300SAF3, KM-1300SWF3 and KM-1300SRF3
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. Especially, never misconnect
K3, K4 and K5, because the same connector is used for the Thermistor
and Float Switch. K4 is not connected.

5. Do not fix the electronic devices or parts on the board in the field.

Always replace the whole board assembly when it goes bad.

6. Do not short out power supply to test for voltage.

16

KM-1300S_F/3 models use either the Alpine Controller Board (orange):

PART NUMBER TYPE

2U0127-01 MY9KM910 (Alpine)

MY9KM91B (Alpine)

OR the Control Products Board (green):

PART NUMBER TYPE

2A0836-01 HOSHIZAKI 001 (Control Products - 8 Pin)

OR the Control Products Improved “E” Board (green):

PART NUMBER TYPE

2A1410-01 HOS-001A (Control Products - 10 Pin)

Features of All Three Controller Boards

(1) Maximum Water Supply Period - 6 minutes

Water Solenoid Valve opening, in the Defrost (Harvest) Cycle, is limited by
maximum period of the defrost timer. The Water Valve cannot remain open
longer than the maximum period. The Water Valve can close in less than the
maximum period 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.

(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.

17

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.

(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 model, 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 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.

18

Connector K1
Pins #1 through #10

#1, 9 Magnetic Contactor
#2 Hot Gas Valve
#3 Line Valve
#4 Pump Motor (icemaking)
#5 Pump Motor (drain)
#6 Water Valve
#7, 10 Power (line, Bin Control)
#8 Open

Dip Switch
Defrost Timer, Drain Timer
& Drain Counter

Connector K5
Float Switch

Connector K4
Open
(not connected)

Connector K3
Defrost Control
(Thermistor)

(Alpine “C”/Alpine Board)

19

Features of Control Products “E” Controller Board

The “E” board includes 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.

The green LED’s 1-4 represent the corresponding relays and energize and sequence 5 seconds
from initial startup as follows:

Sequence Step LED’s on Length: Min. Max. Avg.

1 Minute Fill Cycle LED4 60 sec.
Harvest Cycle LED1, 4, & 2 2 min. 20 min. 3-5 min.
Freeze Cycle LED1 5 min. 60 min. 30-35 min.
Reverse Pump Out LED1, 3, & 2 10 sec. 20 sec. Factory set.

{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

shorted thermistor.
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 compressor.
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.

The dip switches should be adjusted per the adjustment chart published in the Tech Specs book. 7 &
8 must remain in the OFF position.

20

(Control Products HOSHIZAKI001 Board)

21

(Control Products HOS-001A Board)

22

[c] SEQUENCE

1st Cycle [KM-1300SAF/3, KM-1300SWF/3 and KM-1300SRF/3]

1. Unit energized and Control Switch to “ICE”
position. Water supply cycle starts.

2. After 1 minute.
Defrost cycle starts.

3. Thermistor reads 48°F.
Defrost Timer starts counting.

5. After the first 5 minutes in freeze cycle.
Ready to complete freeze cycle when Float
Switch circuit opens.

IMPORTANT

Board never accepts freeze completion signal
within the first 5 minutes in freeze cycle.

IMPORTANT

Water Valve
opening is limited
to 6 minutes.

4. Defrost Timer stops counting.
Defrost cycle is completed and freeze cycle
starts.

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.

23

2nd Cycle and after with pump drain
[KM-1300SAF/3, KM-1300SWF/3 and KM-1300SRF/3]

IMPORTANT

Freeze cycle time is limited to 60 minutes even
if Float Switch does not open.

1. Float Switch opens and signals to complete
freeze cycle.
Drain timer starts counting.

&

2. Drain timer stops counting.
Pump drain is completed

3. Thermistor reads 48° F.
Defrost Timer starts
counting.

IMPORTANT

Water Valve
opening is limited to 6
minutes.

5. After the first 5 minutes in freeze cycle.
Ready to complete freeze cycle when Float
Switch circuit opens.

IMPORTANT

Board never accepts freeze completion signal
within the first 5 minutes in freeze cycle.

4. Defrost Timer stops counting.
Defrost cycle is completed and freeze cycle
starts.

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.

24

2nd Cycle and after with no pump drain
[KM-1300SAF/3, KM-1300SWF/3 and KM-1300SRF/3]

IMPORTANT

Freeze cycle time is limited to 60 minutes even
if Float Switch does not open.

1. Float Switch opens and signals to complete
freeze cycle.

2. Thermistor reads 48° F.
Defrost Timer starts counting.

IMPORTANT

Water Valve
opening is limited to 6
minutes.

4. After the first 5 minutes in freeze cycle.
Ready to complete freeze cycle when Float
Switch circuit opens.

IMPORTANT

Board never accepts freeze completion signal
within the first 5 minutes in freeze cycle.

3. Defrost Timer stops counting.
Defrost cycle is completed and freeze cycle
starts.

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.

25

[d] CONTROLS AND ADJUSTMENTS

The Dip Switch is factory-adjusted to the following positions:

DIP SWITCH NO. 12345678910
2U0127-01
2A0836-01
2A1410-01

KM-1300S_F/3

KM-1300S_F,
KM-1300SWF3
KM-1300SAF3
KM-1300SRF3

OFF OFF ON ON ON ON OFF OFF NA NA

OFF OFF ON ON ON ON OFF OFF OFF OFF

OFF OFF ON ON ON ON OFF OFF ON OFF

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.

26

1) Defrost Control
A thermistor (Semiconductor) is used for a defrost control sensor. The resistance var-

ies 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 (kΩ)

0 14.401
10 10.613
32 6.000
50 3.871
70 2.474

90 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 THER-

MISTOR.”

(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 kΩ. 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 when 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. 1 No. 2

OFF OFF 60 seconds
ON OFF 90 seconds
OFF ON 120 seconds
ON ON 180 seconds

27

3) Drain Timer
The Drain Timer is factory-adjusted, and no adjustment is required.

SETTING TIME

Dip Switch Dip Switch

No. 3 No. 4 T1 T2

OFF OFF 10 seconds 150 seconds
ON OFF 10 seconds 180 seconds
OFF ON 10 seconds 120 seconds
ON ON 20 seconds 180 seconds

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. 5 No. 6

OFF OFF every cycle
ON OFF every 2 cycles
OFF ON every 5 cycles
ON ON every 10 cycles

28

5) Freeze Timer

CAUTION

Adjust to proper specification, or the unit may not operate correctly.

Two new dip switches numbered 9 and 10 have been added to the improved “E” board
to better prevent possible freeze ups. These settings come factory set to the default
setting of 60 min. (OFF, OFF). Check the adjustment chart published in the Tech Specs
for proper settings. If the old board does not have these two dip switches, (only 8 in­stead of 10), leave setting as OFF, OFF.

SETTING TIME

Dip Switch Dip Switch

No. 9 No. 10

OFF OFF 60 min.
ON OFF 70 min.
OFF ON 50 min.
ON ON 60 min.

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 kΩ - 3.5 kΩ resistor to the Connector K3 (pins #1 and #2), and energize
the unit.

29

After the 1 minute ± 5 second water supply cycle and the 2 minute ± 10 second defrost

cycle, the unit should start the freeze cycle.

(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 kΩ - 3.5 kΩ resistor 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.
[ALPINE BOARD ONLY]

3) Check the Controller Board by using test program of the Alpine Controller Board
(next page).

(i) Disconnect the Connector K1 from the Controller Board. Set the Dip Switch No. 7

and 8 on the Controller Board to the “ON” position, and energize the unit.

(ii) The current flows to each Relay (from X1 to X4) one after another every time the

float is raised and the contacts close. See the following chart, and check “OPEN”
and “CLOSE” of Pins of the Connector K1 at each step.

(iii) If the checks are completed, turn off the icemaker, plug the Connector K1 into the

Controller Board as before, and set the Dip Switch No. 7 and 8 to the “OFF” posi-

tion.
[CONTROL PRODUCTS BOARD ONLY]
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, and 4, normal sequence every 5 seconds. S3 should remain in the “OFF” position
for normal operation.

30

• TEST PROGRAM OF ALPINE CONTROLLER BOARD

31

III. TECHNICAL INFORMATION

1. WATER CIRCUIT AND REFRIGERANT CIRCUIT

[a] KM-1300SAF, KM-1300SAF3

32

[b] KM-1300SWF, KM-1300SWF3

33

[c] KM-1300SRF, KM-1300SRF3

34

2. WIRING DIAGRAMS

[a] KM-1300SAF

Note: Pressure Switch

Cut-out 412 PSIG

+21.3
0

Cut-in 327 ± 21.3 PSIG

35

[b] KM-1300SWF

Note: Pressure Switch

Cut-out 384 PSIG

+21.3
0

Cut-in 284.5 ± 21.3 PSIG

36

[c] KM-1300SRF

Note: Pressure Switch

Cut-out 412 PSIG

+21.3
0

Cut-in 327 ± 21.3 PSIG

37

[d] KM-1300SAF3

Note: Pressure Switch

Cut-out 412 PSIG

+21.3
0

Cut-in 327 ± 21.3 PSIG

38

[e] KM-1300SWF3

Note: Pressure Switch

Cut-out 384 PSIG

+21.3
0

Cut-in 284 ± 21.3 PSIG

39

[f] KM-1300SRF3

Note: Pressure Switch

Cut-out 412 PSIG

+21.3
0

Cut-in 327 ± 21.3 PSIG

40

3. TIMING CHART

*1 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II. 2. [d] CONTROLS AND

ADJUSTMENTS.”

41

*1 The Pump Motor waits for 2 seconds before starting a drain cycle. See “II. 2. [d] CONTROLS AND

ADJUSTMENTS.”

*2 The icemaker does not complete a defrost cycle in the first 2 or 3 minutes. See “II. 2. [d] CONTROLS AND

ADJUSTMENTS.”

42

4. PERFORMANCE DATA
[a] KM-1300SAF

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )

TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1283 (582)
80/27
90/32

100/38

1249 (566) 1178 (535) 1053 (478)

1238 (562) *1129 (512) 1011 (458)

1203 (546) 1101 (500) *

1238 (562) 1135 (515)

902 (409)

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.
gal./day (m3/day)
FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21
80/27 2192 2217 2243
90/32 2196

100/38 2202 2241 *2284

70/21 *479 ( 1.82 ) 411 ( 1.56 ) 358 ( 1.36 )
80/27
90/32

100/38

70/21 *30
80/27
90/32

100/38 33

70/21 *4.5
80/27 4
90/32 4

100/38 4

70/21
80/27 268 296 318
90/32 273

100/38 277 320

*2180 2196 2220

*2235 2261

428 ( 1.62 ) 322 ( 1.22 ) 291 ( 1.10 )
411 ( 1.56 ) *247 ( 0.94 ) 205 ( 0.78 )
414 ( 1.57 )

32 35 39
32

*255 273 296

237 ( 0.90 ) 167 ( 0.63 )

32 36

*37 41

38 44

4
3

*2.2 2

2

*315 338

360

4
3

2

SUCTION PRESSURE

PSIG (kg/cm2G)

TOTAL HEAT OF REJECTION 19,800 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

70/21
80/27 46 49 51
90/32 47

100/38

*45 47 49

*51

47 51

43

53

55

[b] KM-1300SWF

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )
TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1252 ( 568 )
80/27 1238 ( 561 ) 1209 ( 548 ) 1134 ( 514 )
90/32 1233 ( 559 ) *1188 ( 539 )

100/38 1211 ( 549 ) 1172 ( 532 ) *1056 ( 479 )

1233 ( 559 ) 1176 ( 533 )

1119 ( 508 )

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.
gal./day (m3/day)
FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21 *1975 1997 2043
80/27 1992 2026 2081
90/32 1997 *2050 2102

100/38 2012

70/21 *1587 ( 6.01 ) 1663 ( 6.30 ) 1890 ( 7.15 )
80/27 1645 ( 6.23 ) 1763 ( 6.67 ) 2058 ( 7.79 )
90/32 1663 ( 6.30 )

100/38 1750 ( 6.62 ) 1910 ( 7.23 ) *2365 ( 8.95 )

70/21
80/27 32 33 36
90/32 32 *33.6

100/38 33 34 *39

70/21 *4.3 4.0 3
80/27 4
90/32 4 *2.25 2

100/38 4

70/21
80/27 277 282 295
90/32 278

100/38 282 288 *308

*31.75

*275 278

2062 *2150

*1846 ( 6.99 ) 2117 ( 8.01 )

32

3

2 *2

*285 297

3

288

35

36

SUCTION PRESSURE

PSIG

HEAT OF REJECTION FROM CONDENSER 15,560 BTU/h [AT 90°F (32°C) / WT 70°F (21°C)]
HEAT OF REJECTION FROM COMPRESSOR 2,650 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]
WATER FLOW FOR CONDENSER 88 gal./h [AT 100°F (38°C) / WT 90°F (32°C)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

70/21 *47 48 49
80/27 47
90/32 48 *49 50

100/38 48 49 *51

48 49

44

[c] KM-1300SRF

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )

TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1296 (588)
80/27
90/32

100/38

1260 (571) 1185 (538) 1105 (501)

1248 (566) *1133 (514) 1053 (478)

1230 (558) 1114 (505) *

1248 (566) 1173 (532)

980 (445)

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.
gal./day (m3/day)
FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21
80/27 2311 2334 2360
90/32 2315

100/38 2321 2356 *2400

70/21 *456 ( 1.73 ) 402 ( 1.52 ) 353 ( 1.34 )
80/27
90/32

100/38

70/21 *29
80/27
90/32

100/38 31

70/21
80/27 4
90/32 4

100/38 4

70/21
80/27 229 247 262
90/32 232

100/38 235 264

*2300 2315 2339

*2350 2376

415 ( 1.58 ) 332 ( 1.26 ) 296 ( 1.12 )
402 ( 1.52 ) *273 ( 1.03 ) 230 ( 0.87 )
401 ( 1.52 )

30 31 35
30

*5

*220 232 247

263 ( 1.00 ) 191 ( 0.72 )

30 33

*32 36

33 40

4

3

*2.2 2

2

*260 276

290

4

3

2

SUCTION PRESSURE

PSIG (kg/cm2G)

HEAT OF REJECTION FROM
CONDENSER 18,300 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

HEAT OF REJECTION FROM
COMPRESSOR 2,910 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

CONDENSER VOLUME 132 cu. in. ( URC-12F )

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

70/21
80/27 46 48 51
90/32 47

100/38

*45 46 49

*50

47 51

45

53

55

[d] KM-1300SAF3

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )

TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1320 ( 599 )
80/27
90/32 1257 ( 570 ) *1105 ( 501 ) 993 ( 450 )

100/38 1230 ( 558 ) 1079 ( 489 ) *890 ( 404 )

1272 ( 577 ) 1174 ( 533 ) 1060 ( 481 )

1257 ( 570 ) 1153 ( 523 )

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.
gal./day (m3/day)
FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21
80/27 2178 2235 2271
90/32 2187

100/38 2192 2284 *2350

70/21 *488 ( 1.85 ) 431 ( 1.63 ) 388 ( 1.47 )
80/27
90/32

100/38

70/21 *30
80/27 32 35 39
90/32 32

100/38 33

70/21
80/27 4 3
90/32 4

100/38 4

70/21
80/27 270 299
90/32 274 *320 341

100/38 277 325

*2150 2187 2228

*2275 2314

445 ( 1.68 ) 355 ( 1.34 ) 333 ( 1.26 )
431 ( 1.63 ) *292 ( 1.11 ) 260 ( 0.99 )
435 ( 1.65 )

*4

*255 274 296

285 ( 1.08 )

32 36

*37.4 41

38 44.75

3

*2.1 2

2

360

231 ( 0.87 )

3

3

2

318

SUCTION PRESSURE

PSIG (kg/cm2G)

TOTAL HEAT OF REJECTION 18,130 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

70/21
80/27 48 50 52
90/32 48 *52

100/38

*47 48 50

49 52

46

54

55

[e] KM-1300SWF3

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )
TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1301 ( 590 ) 1273 ( 577 ) 1205 ( 547 )
80/27 1279 ( 580 ) 1235 ( 560 ) 1152 ( 523 )

90/32 1273 ( 577 ) *1204 ( 546 ) 1126 ( 511 )

100/38 1250 ( 567 ) 1186 ( 538 ) *1055 ( 479 )

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.
gal./day (m3/day)
FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21 *2075
80/27 2086 2109 2151
90/32 2090 *2125 2164

100/38 2101

70/21 *1533 ( 5.80 ) 1586 ( 6.00 ) 1776 ( 6.72 )
80/27 1574 ( 5.96 ) 1656 ( 6.28 ) 1911 ( 7.23 )
90/32 1586 ( 6.00 )

100/38 1664 ( 6.30 ) 1769 ( 6.70 ) *2158 ( 8.17 )

70/21
80/27 31 32 34
90/32 31 *32.75

100/38 32 33

70/21 *4.2 4 3
80/27 4
90/32 4 *2.2 2

100/38 4

70/21
80/27 273 280 291
90/32 274

100/38 277 287 *305

*30.2

*270 274

2090 2124

2134 *2200

*1715 ( 6.49 ) 1945 ( 7.36 )

31 33

35

*36.5

3

2 *2

*285 295

3

284

SUCTION PRESSURE

PSIG

HEAT OF REJECTION FROM CONDENSER 15,450 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]
HEAT OF REJECTION FROM COMPRESSOR 2,560 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]
WATER FLOW FOR CONDENSER 88 gal./h [AT 100°F (38°C) / WT 90°F (32°C)]
PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

70/21 *48 49 50
80/27 49
90/32 49 *51 52

100/38 49 51 *53

50 51

47

[f] KM-1300SRF3

APPROXIMATE
ICE PRODUCTION
PER 24 HR.

lbs./day (kg./day)

AMBIENT WATER TEMP. ( °F/°C )

TEMP. ( °F/°C ) 50/10 70/21 90/32

70/21 *1308 (593)
80/27
90/32

100/38

1288 (584) 1247 (566) 1145 (520)

1282 (581) *1218 (552) 1125 (510)

1252 (568) 1196 (543) *1039 (471)

1282 (581) 1203 (546)

APPROXIMATE ELECTRIC
CONSUMPTION

watts
APPROXIMATE WATER

CONSUMPTION PER 24 HR.

3

gal./day (m

/day)

FREEZING CYCLE TIME

min.
HARVEST CYCLE TIME

min.
HEAD PRESSURE

PSIG

70/21

*2270 2279 2332
80/27 2277 2290 2367
90/32 2279

*2300 2368

100/38 2303 2316 *2430

70/21 *463 ( 1.75 ) 401 ( 1.52 ) 356 ( 1.35 )
80/27
90/32

100/38

70/21 *30
80/27
90/32

100/38 31

70/21
80/27 4
90/32 4

100/38 4

70/21

416 ( 1.58 ) 320 ( 1.21 ) 296 ( 1.12 )
401 ( 1.52 ) *252 ( 0.95 ) 218 ( 0.82 )
405 ( 1.53 )

30 32 35

31

*4.8

*230 242 259

244 ( 0.92 ) 187 ( 0.72 )

31 33

*33 36

34 39
4

3

*2.2 2

2

4
3

2

80/27 239 257 275
90/32 242

100/38 246 274

*270 288

305

SUCTION PRESSURE

70/21

*50 51 53

80/27 51 52 55

PSIG (kg/cm

2

G)

90/32 51

100/38

52 54

*53

HEAT OF REJECTION FROM
CONDENSER 16,600 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

HEAT OF REJECTION FROM
COMPRESSOR 2,500 Btu/h [AT 90°F (32°C) / WT 70°F (21°C)]

CONDENSER VOLUME 132 cu. in. ( URC-12F )

Note: Pressure data is recorded first 5 minutes in freezing cycle.

The data without * marks should be used for reference.

We reserve the right to make changes in
specifications and design without prior notice.

48

56

58

IV. SERVICE DIAGNOSIS

1. NO ICE PRODUCTION

PROBLEM POSSIBLE CAUSE REMEDY

[1] The icemaker a) Power Supply 1. “OFF” position. 1. Move to “ON” position.
will not start 2. Loose connections. 2. Tighten.

3. Bad contacts. 3. Check for continuity and
replace.

4. Voltage too high. 4. Check and get
recommended voltage.

b) Fuse (Inside Fused 1. Blown out. 1. Check for short circuit
Disconnect, if any) and replace.
c) Control Switch 1. “OFF” position. 1. Move to “ICE” position.

2. Bad contacts. 2. Check for continuity and
replace.

d) Bin Control 1. Tripped with bin filled 1. Remove ice.
Thermostat with ice.

2. Ambient temperature 2. Increase ambient

too cool. temperature.

3. Set too warm. 3. See “II.2.[d]
CONTROLS AND
ADJUSTMENTS, 5) 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 1. Bad contacts. 1. Check for continuity and
Control replace.
f) Transformer 1. Thermal fuse blown out 1. Replace.

or coil winding opened.
g) Wiring to 1. Loose connections or 1. Check for continuity and
Controller Board open. replace.
h) Thermistor 1. Leads short-circuit or 1. See “II.2.[d] CONTROLS

open and High AND ADJUSTMENTS, 1)

Temperature Safety Defrost Control.”

operates.
i) Hot Gas Solenoid 1. Continues to open in 1. Check for power off in
Valve freeze cycle and High freeze cycle and replace.

Temperature Safety

operates.
j) Water Supply Line 1. Water supply off and 1. Check and get

water supply cycle does recommended

not finish. pressure.

2. Condenser water 2. Check and get

pressure too low or off recommended

and Pressure Control pressure.

opens and closes fre-

quently to finally operate

High Temperature Safety.
k) Water Solenoid 1. Mesh filter or orifice gets 1. Clean.

clogged and water supply

cycle does not finish.

2. Coil winding opened. 2. Replace.

3. Wiring to Water Valve. 3. Check for loose
connection or open, and
replace.

49

PROBLEM POSSIBLE CAUSE REMEDY

l) Controller Board 1. Defective. 1. See “II.2[e] CHECKING

CONTROLLER BOARD.”

m) Interlock Switch 1. “OFF” position. 1. Move to “ON” position.

(Cleaning Valve) 2. Bad contacts. 2. Check for continuity and

replace.
[2] Water a) Float switch 1. Connector disconnected. 1. Place in position.
continues to 2. Leads opened or defective 2. Check and replace.
be supplied, switch.
and the ice- 3. Float does not move freely. 3. Clean or replace.
maker will not b) Controller Board 1. Defective. 1. Replace.
start.
[3] Compressor a) Wash Switch 1. “WASH” position. 1. Move to “ICE” position.
will not start 2. Bad contacts. 2. Check and replace.
or stops b) High Pressure 1. Dirty Air Filter or 1. Clean.
operating Controller Condenser.

2. Ambient or condenser 2. Reduce ambient temp.
water temp. too warm.

3. Refrigerant overcharged. 3. Recharge.

4. Condenser water pressure 4. Check and get
too low or off. [Water- recommended pressure.
cooled model only].

5. Fan not operating. [Except 5. See chart 1 - [6].
water-cooled model].

6. Refrigerant line or 6. Clean and replace Drier.

components plugged.
c) Water Regulator 1. Set too high. 1. Adjust lower.
d) 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 4. Check Line Valve's

close in freeze cycle and operation in freeze cycle

Overload Protector and replace.

operates.
e) Starter 1. Bad contacts. 1. Check and replace.

2. Coil winding opened. 2. Replace.
f) Start Capacitor or 1. Defective. 1. Replace.
Run Capacitor
g) Magnetic Contactor 1. Bad contacts. 1. Check for continuity and

replace.

2. Coil winding opened. 2. Replace.
h) Compressor 1. Wiring to Compressor. 1. Check for loose

connection or open, and
replace.

2. Defective. 2. Replace.

3. Protector tripped. 3. Reduce temperature.
i) Controller board 1. Defective. 1. See “II.2. [e] CHECKING

CONTROLLER BOARD.”
[4] Water a) Water Solenoid 1. Diaphragm does not close. 1. Check for water leaks
continues to Valve with icemaker off.
be supplied in b) Controller Board 1. Defective. 1. See “II.2.[e] CHECKING
freeze cycle. CONTROLLER BOARD.”

50

PROBLEM POSSIBLE CAUSE REMEDY

[5] No water a) Water Supply Line 1. Water pressure too low and 1. Check and get
comes from water level in Water Tank recommended pressure.

Spray Tubes. too low.
Water Pump b) Water Solenoid 1. Dirty mesh filter or orifice 1. Clean.
will not start, or Valve and water level in Water
freeze cycle Tank too low.
time is too c) Water System 1. Water leaks. 1. Check connections for
short. water leaks, and replace.

2. Clogged. 2. Clean.

3. Pump Out Check Valve 3. Check assembly and
leaking by. clean.

d) Pump Motor 1. Motor winding opened. 1. Replace.

2. Bearing worn out. 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 1. Defective. 1. See “II.2. [e] CHECKING

CONTROLLER BOARD.”

[6] Fan Motor will a) Fan Motor 1. Motor winding opened. 1. Replace.
not start, or is 2. Bearing worn out. 2. Replace.
not operating. 3. Wiring to Fan Motor. 3. Check for loose

connection or open, and

replace.

4. Defective Capacitor. 4. Replace.

5. Fan blade bound. 5. Check and replace.

b) Controller Board 1. Defective. 1. See “II.2. [e] CHECKING

CONTROLLER BOARD.”

[7] All components a) Refrigerant 1. Undercharged. 1. Check for leaks and
run but no ice recharge.
is produced. 2. Air or moisture trapped. 2. Replace Drier, and

recharge.

b) Compressor 1. Defective valve. 1. Replace.
c) Hot Gas Solenoid 1. Continues to open in freeze 1. Check and replace.
Valve cycle.
d) Line Valve 1. Continues to close in 1. Check and replace

freeze cycle.
e) Water Solenoid 1. Water Solenoid Valve is 1. Check for water leaks
Valve open during freeze. with icemaker off.
f) Water Supply Line 1. Condenser water pressure 1. Check and get

[Water-cooled model too low or off and Pressure recommended pressure.

only] Control opens and closes

frequently.

51

2. EVAPORATOR IS FROZEN UP

PROBLEM POSSIBLE CAUSE REMEDY

[1] Freeze cycle a) Float Switch 1. Leads short-circuit or 1. Check and replace.
time is too defective switch.
long. 2. Float does not move freely. 2. Clean or replace.

b) Water Solenoid 1. Diaphragm does not close. 1. Check for water leaks
Valve with icemaker off.
c) Controller Board 1. Defective. 1. See “II.2[e] CHECKING

CONTROLLER BOARD.”
[2] All ice formed a) Evaporator 1. Scaled up. 1. Clean.
on Evaporator b) Water Supply Line 1. Water pressure too low. 1. Check and get
does not fall recommended pressure.
into bin in c) Water Filter System 1. Dirty/Restricted. 1. Replace filter.
harvest cycle. d) Water Solenoid 1. Dirty mesh filter or orifice. 1. Clean.

Valve
e) Ambient and/or 1. Too cool. 1. Increase temperature.
water temperature
f) Line Valve 1. Continues to open in 1. Check operation in

harvest cycle. harvest cycle and replace.

g) Thermistor 1. Out of position or loose 1. See “V. 11. REMOVAL

attachment. AND REPLACEMENT OF

THERMISTOR.”

h) Controller Board 1. Defrost Timer is set too 1. Adjust longer, referring

short. to “II. 2. [d] CONTROLS

AND ADJUSTMENT, 2)

Defrost Timer.”

2. Defective. 2. See “II. 2.[e] CHECKING
CONTROLLER BOARD.”

[3] Others a) Spray Tubes 1. Clogged. 1. Clean.

2. Out of position. 2. Place in position.

b) Water System 1. Dirty. 1. Clean.
c) Refrigerant 1. Undercharged. 1. Check for leaks and

recharge.

d) Expansion Valve 1. Bulb out of position or 1. Place in position.

loose attachment.

2. Defective. 2. Replace.

e) Hot Gas Solenoid 1. Coil winding opened. 1. Replace.
Valve 2. Plunger does not move. 2. Replace.

3. Wiring to Hot Gas Valve. 3. Check for loose
connection or open, and
replace.

f) Water Supply Line 1. Too small; requires 1/2" OD 1. Increase water line size.

line dedicated per machine.

g) Water filter 1. Flow rate too small. 1. Replace with filter that

has larger flow rate.

52

3. LOW ICE PRODUCTION

PROBLEM POSSIBLE CAUSE REMEDY

[1] Freeze cycle a) See chart 1 - [3], and check dirty Air Filter or Condenser, ambient or water
time is long. temperature, water pressure, Water Regulator or refrigerant charge.

b) See chart 2 - [1], and check Float Switch, Water Solenoid Valve or Controller

Board.
[2] Harvest cycle a) See chart 2 - [2], and check Controller Board, Thermistor, Evaporator, ambient
time is long and/or water temperature, water supply line, Water Solenoid Valve, Line Valve,

or Hot Gas Valve.

4. ABNORMAL ICE

PROBLEM POSSIBLE CAUSE REMEDY

[1] Small Cube a) Ice Cube Guide 1. Out of position. 1. Place in position.

Circulated water falls into

bin.
b) See chart 1 - [5], and check water supply line, Water Solenoid Valve, water system,
Pump Motor or Controller Board.
c) Pump Out Check Valve 1. Dirty. 1. Clean.

[2] Cloudy or a) See chart 2 - [1] and - [3], and check Float Switch, Water Solenoid Valve,
irregular cube Controller Board, Spray Tubes, water system, refrigerant charge or Expansion

Valve.
b) Spray Guide 1. Dirty. 1. Clean.
c) Water Quality 1. High hardness or contains 1. Install a water filter or

impurities. softener.

5. OTHERS

PROBLEM POSSIBLE CAUSE REMEDY

[1] Icemaker will a) Bin Control 1. Set too cold. 1. Adjust warmer.
not stop when Thermostat 2. Defective. 2. Replace.
bin is filled
with ice.
[2] Abnormal a) Pump Motor 1. Bearings worn out. 1. Replace.
noise b) Fan Motor 1. Bearings worn out. 1. Replace.

2. Fan blade deformed. 2. Replace fan blade.

3. Fan blade does not move 3. Replace.

freely.
c) Compressor 1. Bearings worn out, or 1. Replace.

cylinder valve broken.

2. Mounting pad out of 2. Reinstall

position.
d) Refrigerant Lines 1. Rub or touch lines or other 1. Replace.

surfaces.

[3] Ice in storage a) Bin Drain 1. Plugged. 1. Clean.
bin often b) Icemaker and Bin 1. Drains not run separately. 1. Separate the Drain Lines.
melts.

53

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.

54

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 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

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.

DANGER

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.

55

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 the pressure 3-4 PSIG.

13) Install the new Filter Drier.

14) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.

56

15) Evacuate the system, and charge it with refrigerant. See the Nameplate for the
required refrigerant charge.

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 the 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 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.

57

5. REMOVAL AND REPLACEMENT OF EXPANSION VAL VE

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 the 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 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.

58

6. REMOV AL AND REPLACEMENT OF HOT GAS VALVE, LINE V ALVE
AND GAS V ALVE

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, Line Valve or Gas 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.

59

11) Connect the new Solenoid leads.

12) Attach the Solenoid to the valve body, and secure it with a screw.

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 repairs or replacement
have 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 “U” shaped 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 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.

60

8. REMOVAL AND REPLACEMENT OF WA TER REGULATING VAL VE ­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.

61

9. ADJUSTMENT OF WA TER 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 280 PSIG or the thermometer reads 108–117° F, 5 minutes after a
freeze cycle or icemaking process starts. When the pressure exceeds 280 PSIG, or
the condenser drain temperature exceeds 115° F, rotate the adjustment screw
counterclockwise. See Fig. 1 and the chart below.

3) Check that the pressure or the condenser drain temperature holds a stable setting.

Fig. 1

PSIG °F PSIG °F PSIG °F

WATER TEMP. 50 70 90

AIR TEMP.

70 275 108 278 108 288 111
90 278 108 285 109 297 113

100 282 110 288 110 308 117

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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 the 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.

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.

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.

Thermistor Lead Cable Tie

Foam Insulation Thermistor Holder

Fig. 2

64

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.

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. REMOV AL AND REPLACEMENT OF WA TER 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 MOT OR

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.

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Fig. 3

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.

67

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.

• When the icemaker is not used for two or three days, it is sufficient to only move the
Control Switch to the “OFF” position, 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 “OFF” position.

3) Wait 3 minutes.

4) Move the Control Switch to the “ICE” position.

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 “OFF” position.

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 “ICE” position.

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.

7) Close the Drain Valve.

Fig. 4

69

2. CLEANING PROCEDURE

Ensure all components, fasteners and thumbscrews are securely in place
after any maintenance or cleaning is done to the equipment.

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 for safe handling of the cleaning and
sanitizing solution. This will prevent irritation in case the solution comes
into contact with skin.

IMPORTANT

WARNING

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.

70

[a] CLEANING PROCEDURE

1) Dilute 27 fl. oz. of the recommended cleaner Hoshizaki “Scale Away” or
“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 “WASH” position.

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 the above step 5).

15) Replace the tubing and the Insulation Panel in their correct positions.

16) Move the Control Switch to the “ICE” position.

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.

71

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 “Wash” position.

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 “WASH” position and the

Cleaning Valve is in the “Open” position.

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 above 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 PROCEDURE” two

times to rinse thoroughly.

11) Close the Cleaning Valve.

12) Move the Control Switch to the “ICE” position.

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.

73

3. MAINTENANCE

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.

IMPORTANT

• 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.

74