Hoshizaki KM-500MAH Bedienungsanleitung

™

SERVICE MANUAL

ISSUED: NOV. 7, 2002

KM-500MAH

KM-500MWH

KM-500MRH

MODULAR CRESCENT CUBER

Reliability is a

beautiful thing

REVISED: DEC. 16, 2003

NUMBER: 73104

IMPORTANT

Only qualified service technicians should attempt to service or maintain this icemaker.

No service or maintenance should be undertaken until the technician has thoroughly

read this Service Manual.

HOSHIZAKI AMERICA, INC.

618Highway74South

PeachtreeCity,GA 30269

Attn: HOSHIZAKITechnicalSupportDepartment

Phone: 1-800-233-1940TechnicalService

(770)487-2331

Fax: (770)487-3360

NOTE: Toexpediteassistance,allcorrespondence/communicationMUST includethefollowing

information:

• ModelNumber

• SerialNumber

• Completeanddetailedexplanationoftheproblem

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.

• Please review this manual. It should be read carefully before the icemaker is serviced

or maintenance operations performed. Only qualified service technicians should service

and maintain the icemaker. This manual should be made available to the technician

prior to service or maintenance.

CONTENTS PAGE

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

1. KM-500MAH (Air-cooled)..................................................................................... 5

2a. KM-500MWH (Water-cooled) Serial #L00001D - M20960C .............................. 6

2b. KM-500MWH Serial #M30961D ........................................................................ 7

KM-500MRH(Remote air-cooled)........................................................................ 8

CONDENSERUNIT,URC-6F.............................................................................. 9

II.GENERALINFORMATION ...................................................................................... 11

1. CONSTRUCTION............................................................................................... 11

[a]KM-500MAH(Air-cooled)............................................................................. 11

[b]KM-500MWH(Water-cooled)....................................................................... 12

[c]KM-500MRH(Remoteair-cooled) ................................................................ 13

2. CONTROLLERBOARD..................................................................................... 14

[a]SOLID-STATECONTROL ........................................................................... 14

[b]CONTROLLERBOARD............................................................................... 14

[c]SEQUENCE ................................................................................................ 18

[d]CONTROLSANDADJUSTMENTS ............................................................. 20

[e]CHECKINGCONTROLLERBOARD ........................................................... 24

3. MECHANICALBINCONTROL........................................................................... 26

[a]

PROXIMITYSWITCH ................................................................................... 26

[b]

EXPLANATIONOF OPERATION................................................................ 26

[c]

TROUBLESHOOTING ................................................................................. 27

III. TECHNICALINFORMATION .................................................................................. 28

1. WATERCIRCUITANDREFRIGERANTCIRCUIT .............................................. 28

[a]KM-500MAH ................................................................................................ 28

[b]KM-500MWH ............................................................................................... 29

[c]KM-500MRH ................................................................................................ 30

2. WIRINGDIAGRAMS .......................................................................................... 31

[a]KM-500MAHandKM-500MWH ................................................................... 31

[b]KM-500MRH ................................................................................................ 33

3. TIMINGCHART.................................................................................................. 35

4. PERFORMANCE DATA .................................................................................... 37

[a]KM-500MAH ................................................................................................ 37

[b] KM-500MWHSerial #L00001D - M20960C.................................................. 38

[c]

KM-500MWH Serial #M30961D .................................................................. 39

[d]KM-500MRH ................................................................................................ 40

IV. SERVICE DIAGNOSIS...........................................................................................41

1. NOICE PRODUCTION.........................................................................................41

2. EVAPORATOR IS FROZEN UP ..........................................................................42

3. LOW ICE PRODUCTION......................................................................................42

4. ABNORMAL ICE ..................................................................................................45

5. OTHERS ..............................................................................................................45

V. REMOVALAND REPLACEMENT OFCOMPONENTS............................................46

1. SERVICE FOR REFRIGERANT LINES ..............................................................46

[a] REFRIGERANT RECOVERY........................................................................46

[b] EVACUATION AND RECHARGE..................................................................46

2. BRAZING.............................................................................................................47

3. REMOVAL AND REPLACEMENT OF COMPRESSOR .......................................48

4. REMOVAL AND REPLACEMENT OF DRIER .....................................................50

5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE ...............................50

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

LINE VALVE........................................................................................................51

7. REMOVAL AND REPLACEMENT OF EVAPORATOR ........................................52

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

- WATER COOLED MODEL ONLY.....................................................................54

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

- WATER COOLED MODEL ONLY.....................................................................55

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

REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY .......................56

11. REMOVAL AND REPLACEMENT OF THERMISTOR..........................................57

12. REMOVAL AND REPLACEMENT OF FAN MOTOR ............................................58

13. REMOVAL AND REPLACEMENT OF WATER VALVE........................................59

14. REMOVAL AND REPLACEMENT OF PUMP MOTOR .........................................59

15. REMOVAL AND REPLACEMENT OF SPRAY TUBES ........................................60

VI. CLEANING AND MAINTENANCE INSTRUCTIONS ...............................................61

1. PREPARING THE ICEMAKER FOR LONG STORAGE ......................................61

2. CLEANING AND SANITIZING PROCEDURES...................................................63

[a] CLEANING PROCEDURE .............................................................................64

[b] SANITIZING PROCEDURE ...........................................................................66

3. MAINTENANCE....................................................................................................67

I. SPECIFICATIONS

1. KM-500MAH

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

AC SUPPLY VOLTAGE 115/60/1

AMPERAGE 13 A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *499 (226) 468 (212) 428 (194)

Reference without *marks 80 475 (216) 427 (194) 389 (176)

90 468 (212) *393 (178) 353 (160)

100 461 (209) 384 (174) 317 (144)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 9.5 lbs. ( 4.3 kg ) 480 pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1212 (7.4) 1164 (5.6)

WATER gal./24HR (gal./100 lbs.) 113 (28.8) 250 (50.1)

EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/6" (560 x 695 x 770 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 151 lbs. ( 69 kg ), Shipping 175 lbs. (80 kg)

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL N/A

BIN CONTROL SYSTEM Proximity Switch with Delay

COMPRESSOR Hermetic, Model AKA9455ZXA

CONDENSER Air-cooled, Fin and tube type

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

REFRIGERANT CHARGE R-404A, 1 lb. 10 oz. ( 735 g )

DESIGN PRESSURE High 467 PSIG, Low 230 PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Storage Bin

OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

3/8" OD Pipe

2a. KM-500MWH Serial #L00001D - M20960C

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

AC SUPPLY VOLTAGE 115/60/1

AMPERAGE 10 A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *463 (210) 448 (203) 423 (192)

Reference without *marks 80 451 (205) 428 (194) 401 (180)

90 448 (203) *411 (186) 385 (175)

100 442 (200) 405 (184) 361 (164)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 9.5 lbs. ( 4.3 kg ) 480 pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1130 (6.6) 1100 (5.7)

WATER gal./24HR (gal./100 lbs.) 135 (32) 245 (52.8)

WATER COOLED CONDENSER 723 (176) 380 (82)

gal./24HR (gal./100 lbs.)

EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 146 lbs. ( 66 kg ), Shipping 170 lbs. (77 kg.)

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT Condenser Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT Condenser Outlet 3/8" FPT

3/8" OD Pipe

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL Pressure Regulator

BIN CONTROL SYSTEM Proximity Switch with Delay

COMPRESSOR Hermetic, Model AKA9455ZXA

CONDENSER Water-cooled, Tube in tube type

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

REFRIGERANT CHARGE R-404A, 13.2 oz. ( 375 g )

DESIGN PRESSURE High 427 PSIG, Low 230 PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Storage Bin

OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

2b. KM-500MWH Serial #M30961D -

AC SUPPLY VOLTAGE 115/60/1

AMPERAGE 10 A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *480 (218) 471 (213) 439 (199)

Reference without *marks 80 473 (214) 458 (208) 417 (189)

90 471 (213) *448 (203) 410 (186)

100 458 (208) 439 (199) 375 (170)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 9.5 lbs. (4.3 kg) 480 pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1157 (6.2) 1140 (5.7)

WATER gal./24HR (gal./100 lbs.) 133 (29.7) 268 (55.8)

WATER COOLED CONDENSER 699 (156) 394 (82)

gal./24HR (gal./100 lbs.)

EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 146 lbs. ( 66 kg ), Shipping 170 lbs. ( 77 kg )

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT Condenser Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT Condenser Outlet 3/8" FPT

3/8" OD Pipe

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL Pressure Regulator

BIN CONTROL SYSTEM Proximity Switch with Delay

COMPRESSOR Hermetic, Model AKA9455ZXA

CONDENSER Water-cooled, Tube in tube type

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

REFRIGERANT CHARGE R-404A, 15 oz. ( 425 g )

DESIGN PRESSURE High 427 PSIG, Low 206 PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Storage Bin

OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

3. KM-500MRH

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

AC SUPPLY VOLTAGE 115/60/1

AMPERAGE 15 A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *517 235) 493 (224) 449 (204)

Reference without *marks 80 499(226) 462 (210) 411 (187)

90 493 (224) *436 (198) 387 (176)

100 480 (218) 425 (193) 342 (155)

SHAPE OF ICE Crescent Cube 480

ICE PRODUCTION PER CYCLE 9.5 lbs. (4.3 kg ) 480 pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1272 (7.0) 1206 (5.6)

WATER gal./24HR (gal./100 lbs.) 137 (31.3) 233 (45.1)

EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/16" (560 x 695 x 770 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 151 lbs. ( 69 kg ), Shipping 175 lbs. ( 80 kg )

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

3/8" OD Pipe

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL N/A

BIN CONTROL SYSTEM Proximity Switch with Delay

COMPRESSOR Hermetic, Model AKA9455ZXA

CONDENSER Air-cooled Remote, Condenser Unit URC 6F

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

Condensing Pressure Regulator on URC-6F

REFRIGERANT CHARGE R-404A, 4 lbs. 0 oz. ( 1800 g )

( Icemaker 2 lbs. 1.5 oz. Cond. Unit 1 lb. 14 oz. )

DESIGN PRESSURE High 467 PSIG, Low 230 PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Storage Bin, Remote Condenser Unit

OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

4. CONDENSER UNIT

URC-6F 24"

(610 mm.)

23-1/32"

(585 mm.)

19-11/16"

(500 mm.)

18-1/8"

(460 mm.)

20-15/32"

(520 mm.)

21-15/16"

(557 mm.)

7/8" DIA. HOLE

(23 mm. DIA.)

6-5/16"

(160 mm.)

2-15/16"

(75 mm.)

18-1/8"

(460 mm.)

6/16" x 3/4" (10 mm. x 20 mm.)

4 x 2 (SLOTTED HOLES)

17-1/8"

(435 mm.)

14-9/16"

(370 mm.)

14-1/8"

(358 mm.)

14-15/16"

(380 mm.)

15-11/16"

(398 mm.)

17-7/8"

(454 mm.)

2-1/2"

(63 mm.)

14-15/16"

(380 mm.)

Galvanized Steel

21-15/16" x 15-11/16" x 17-7/8"

(557 x 398 x 453.8 mm.)

R404A 1 lb. 2 oz. (505 g)

Net 61 lbs. (28 kg)

Shipping 68 lbs. (31 kg)

One Shot Couplings (Aeroquip)

PermanentConnection

Air-cooled

Condensing Pressure Regulator

Min. -20°F - Max. +122°F

(-29°C to +50°C)

Outdoor use

SPECIFICATIONS

EXTERIOR

DIMENSIONS (W x D x H)

REFRIGERANT CHARGE

WEIGHT

CONNECTIONS

REFRIGERANT

ELECTRICAL

CONDENSER

HEAD PRESSURE CONTROL

AMBIENT CONDITION

MODEL: URC-6F

Andere Handbücher für KM-500MAH

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