Hoshizaki DCM-240BAF Service Manual

NO.: ISSUED:

REVISED:

73067

JUNE 23, 1998

DEC. 15, 2003

HOSHIZAKI

CUBELET ICE DISPENSER

MODEL

DCM-240BAF

SERVICE MANUAL

IMPORTANT

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

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

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 Dep artment

Phone: 1-800-233-1940 T echnical Service

(770) 487-2331

Fax: (770) 487-3360

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

information:

• Model Number

• Serial Number

• Complete and detailed explanation of the problem

• Please review this manual. It should be read carefully before the ice dispenser is serviced or maintenance operations performed. Only qualified service technicians

should service and maintain the dispenser. This manual should be made available to the

technician prior to service or maintenance.

CONTENTS

PAGE

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

1. DCM-240BAF (Air-cooled) .......................................................................................... 5

II. GENERAL INFORMATION.............................................................................................. 6

1. CONSTRUCTION ....................................................................................................... 6

2. OPERATION - How it works ....................................................................................... 7

III. TECHNICAL INFORMATION.......................................................................................... 8

1. WATER CIRCUIT AND REFRIGERANT CIRCUIT...................................................... 8

2. WIRING DIAGRAM..................................................................................................... 9

3. SEQUENCE OF ELECTRICAL CIRCUIT.................................................................. 10

4. PERFORMANCE DATA ............................................................................................ 22

IV. SERVICE DIAGNOSIS ................................................................................................ 23

1. NO ICE PRODUCTION............................................................................................. 23

2. LOW ICE PRODUCTION.......................................................................................... 25

3. FAULTY DISPENSER ............................................................................................... 26

4. OTHERS ................................................................................................................... 27

V. REMOVAL AND REPLACEMENT OF COMPONENTS................................................ 28

1. SERVICE FOR REFRIGERANT LINES ..................................................................... 28

[a] REFRIGERANT RECOVERY.............................................................................. 28

[b] EVACUATION AND RECHARGE [R-404A] ........................................................ 28

2. BRAZING .................................................................................................................. 29

3. REMOVAL AND REPLACEMENT OF COMPRESSOR............................................. 30

4. REMOVAL AND REPLACEMENT OF DRIER............................................................ 31

5. REMOVAL AND REPLACEMENT OF THERMOSTATIC EXPANSION VALVE

6. REMOVAL AND REPLACEMENT OF PRESSURE SWITCH .................................... 33

7. REMOVAL AND REPLACEMENT OF WATER VALVE ............................................. 34

8. REMOVAL AND REPLACEMENT OF FLOAT SWITCH ............................................ 35

9. REMOVAL AND REPLACEMENT OF BIN CONTROL SWITCH ASSEMBLY ...... 36

10. REMOVAL AND REPLACEMENT OF STORAGE BIN ASSEMBLY .......................... 37

11. REMOVAL AND REPLACEMENT AGITATOR AND DRIP RING............................... 38

12. REMOVAL AND REPLACEMENT OF EVAPORATOR ASSEMBLY .......................... 39

VI. CLEANING AND MAINTENANCE INSTRUCTIONS.................................................... 42

1. PREPARING THE ICE DISPENSER FOR LONG STORAGE .................................. 42

2. CLEANING INSTRUCTIONS .................................................................................... 44

[a] CLEANING PROCEDURE .................................................................................. 44

[b] SANITIZING PROCEDURE ................................................................................ 46

3. MAINTENANCE INSTRUCTIONS............................................................................. 48

I. SPECIFICA TIONS

1. DCM-240BAF (Air-cooled)

AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks

SHAPE OF ICE ICE QUALITY APPROXIMATE STORAGE CAPACITY ELECTRIC AND WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) POTABLE WATER gal./24hr. (gal./100 lbs.) EXTERIOR DIMENSIONS ( W x D x H ) EXTERIOR FINISH WEIGHT CONNECTIONS - ELECTRIC

- WATER SUPPLY

- DRAIN

ICE MAKING SYSTEM HARVESTING SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE COMPRESSOR PROTECTION GEAR MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES - REQUIRED OPERATING CONDITIONS

115/60/1

8.5 A [ AT 104°F (40°C) / WT 80°F (27°C) ] N/A N/A Ambient Water Temp. (°F/°C)

Temp (°F/°C) 50/10 70/21 90/32

70/21 80/27 90/32 100/38 Cubelet (compressed flake ice) Approx. 90% ice ( 90/70°F, conductivity 200µs/cm. )

8.8 lbs 90/70°F 70/50°F 700 ( 8.0) 670 ( 5.9 )

25.6 ( 12.2 ) 32.8 ( 12.0 )

16 9/16" x 24 3/16" x 31 7/8" ( 420 x 615 x 809 mm. ) Stainless steel, plastic top Net 152 lbs. ( 69 kg. ) Shipping 170 lbs ( 77 kg. ) Cord Connection Inlet 1/2" NPT Drain pan 3/4" FPT Bin drain 3/4" MPT Auger type Direct driven auger ( 80 W gear motor ) Float switch N/A Mechanical bin control (micro-switch) Hermetic, Model JS25CIE-IAA-252 Air-cooled, fin and tube type Copper tube on cylinder Thermostatic expansion valve R404A, 15.5 oz. ( 440 g ) High 444 PSIG, Low 230 PSIG Auto-reset overload protector Manual reset circuit breaker Auto-reset high pressure control switch Float switch and timer N/A VOLTAGE RANGE 104 - 127 V AMBIENT TEMP. 45 - 100°F WATER SUPPLY TEMP. 45 - 90°F WATER SUPPLY PRESS. 10 - 113 PSIG

*275 ( 125 )

240 (110 )

215 ( 98 ) 190 ( 87 )

265 ( 120 )

230 ( 105 ) *210 ( 95 ) 190 ( 86 )

250 ( 111 ) 215 ( 98 ) 200 ( 90 )

*175 ( 78 )

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

II. GENERAL INFORMATION

1. CONSTRUCTION

Hoshizaki Cubelet Ice Dispenser, model DCM-240BAF includes Water Supply, Freezer, Condensing, Storage, Dispensing and Control Assemblies.

Note: *Adjustable Legs

Minimum height - 4" Maximum height - 5.3"

Do not adjust exceeding the above recommendation.

Fig. 1

A2AAA0269804

2. OPERA TION - How it works

Water flows from the potable water source through the Water Supply Line Shut-off Valve, enters at the Water Inlet fitting and into the Water Reservoir. The Water Reservoir functions to maintain a constant water level inside the Freezer Assembly. Water from the Water Reservoir enters at the bottom of the Freezer. Heat is removed by the refrigeration process and ice forms inside the Freezer.

A stainless steel Auger, located inside the Freezer, is direct-driven by the Gear Motor, and the rotating Auger carries the ice upward to the end of the Auger, where excess water is pressed out of the ice, as the ice is extruded and broken into cubelet ice (compressed ice) and then pushed out into the Storage Bin.

Moving the Power Switch and the Ice Making Switch, on the left of the Middle Front Panel, to the “ON” position starts the automatic and continuous icemaking process. When the Ice Storage Bin is filled with ice, the Bin Control Switch will shut off the icemaking process. As the ice is removed from the Storage Bin, the Bin Control Switch resets automatically and restarts the icemaking process.

Moving the Ice Switch and the Water Switch, located on the right of the Middle Front Panel, to the “ON” and/or “OFF” positions gives the user a convenient 3-way dispensing.

The Agitator in the Storage Bin keeps the ice from clustering so that the ice can move easily through the Spout.

Choice Ice Switch Water Switch

Ice Only Water Only Ice and Water

ON OFF ON

OFF ON ON

Fig. 2

A2AAA0269804