Hoshizaki dcm-75ibah service manual 779 758 Reference without *marks 738 719

Page 57

4. DCM-751BWH-OS

AC SUPPLY VOLTAGE

115/60/1

 

 

 

 

 

 

 

COMPRESSOR

115 V

77 LRA

 

 

11.0 RLA

GEAR MOTOR

115 V

3.0 FLA

 

 

1/4 HP

AGITATING MOTOR

120 V

1.8 FLA (TOTAL)

110 W (TOTAL)

DISPENSING MOTOR

115 V

0.9 FLA

 

 

55 W

OTHER

115 V

0.6 A

 

 

 

 

MAXIMUM FUSE SIZE

20 A

 

 

 

 

 

 

MAX. HACR BREAKER (USA ONLY)

20 A

 

 

 

 

 

 

MAX. CIRC. BREAKER (CANADA ONLY)

20 A

 

 

 

 

 

 

MINIMUM CIRCUIT AMPACITY

20 A

 

 

 

 

 

 

APPROXIMATE ICE PRODUCTION

Ambient

 

WATER TEMP. (°F)

 

PER 24 HR.

Temp.(°F)

 

50

 

70

 

90

 

lb./day (kg/day)

70

 

*800 (363)

 

779 (353)

 

758 (344)

 

Reference without *marks

80

 

738 (335)

 

719 (326)

 

700 (317)

 

 

90

 

681 (309)

 

*685 (311)

 

646 (293)

 

SHAPE OF ICE

100

 

629 (285)

 

612 (278)

 

*563 (255)

 

Cubelet

 

 

 

 

 

 

 

ICE HARDNESS FACTOR

90% (90/70°F, Conductivity 200 µs/cm)

APPROXIMATE STORAGE CAPACITY

95 lb.

 

 

 

 

 

 

ELECTRIC & WATER CONSUMPTION

90/70°F

 

 

70/50°F

 

 

ELECTRIC W (kWH/100 lb.)

1281 (4.77)

 

 

 

1274 (3.86)

 

 

 

POTABLE WATER

82 (12.0)

 

 

 

96 (12.0)

 

 

 

WATER-COOLED CONDENSER

517 (76)

 

 

 

380 (47)

 

 

 

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

 

 

 

 

 

 

 

 

EXTERIOR DIMENSIONS (WxDxH)

34-1/16" x 28-1/2" x 48-1/16" (865 x 723 x 1221 mm) (No legs)

EXTERIOR FINISH

Stainless Steel; Galvanized Steel (Rear)

WEIGHT

Net 300 lb. (136 kg), Shipping 345 lb. (156 kg)

CONNECTIONS - ELECTRIC

Permanent Connection

 

 

 

 

- WATER SUPPLY

Inlet 1/2" FPT

 

 

Condenser Inlet 1/2" FPT

- DRAIN

Drip Tray Drain Outlet 3/4" FPT

Condenser Outlet 3/8" FPT

 

Storage Bin Drain Outlet 3/4" FPT

 

 

ICE MAKING SYSTEM

Auger Type

 

 

 

 

 

 

HARVESTING SYSTEM

Direct Driven Auger (1/4 HP Gear Motor)

ICE MAKING WATER CONTROL

Float Switch

 

 

 

 

 

 

DISPENSER CONTROL SYSTEM

Photoelectric Sensor (Infrared)

 

 

COOLING WATER CONTROL

Water Regulating Valve

 

 

 

 

BIN CONTROL SYSTEM

Mechanical Bin Control and Timer

 

 

COMPRESSOR

Hermetic, Model RST61C1E-CFA-202

 

 

CONDENSER

Water Cooled, Tube in Tube Type

 

 

EVAPORATOR

Copper Tube on Cylinder

 

 

 

 

REFRIGERANT CONTROL

Thermostatic Expansion Valve

 

 

REFRIGERANT CHARGE

R-404A, 1 lb. 6 oz. (624 g)

 

 

DESIGN PRESSURE

High 460 PSIG, Low 290 PSIG

 

 

P.C. BOARD CIRCUIT PROTECTION

High Voltage Power Protect Relay

 

 

COMPRESSOR PROTECTION

Auto-Reset Internal Protector

 

 

GEAR MOTOR PROTECTION

Auto-Reset Internal Protector and Fuse (3A)

REFRIGERANT CIRCUIT PROTECTION

Auto-reset High Pressure Switch

 

 

LOW WATER PROTECTION

Float Switch and Timer

 

 

 

 

ACCESSORIES - SUPPLIED

Spare Fuse (2-3A), Legs

 

 

 

 

- OPTIONAL

HS-5002, Apron kit when drip tray removed

OPERATING CONDITIONS

VOLTAGE RANGE

 

 

104-127 VAC

 

AMBIENT TEMP.

 

 

45-100° F

 

WATER SUPPLY TEMP.

 

 

45-90° F

 

WATER SUPPLY PRESSURE

10-113 PSIG

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

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Contents DCM-751BAH-OS DCM-751BWH-OS Hoshizaki AMERICA, INC Contents Page Important Safety Information Page DCM-751BAH-OS Construction and Water/Refrigeration Circuit DiagramsDCM-751BWH-OS Ice Making Unit Water/Refrigeration Circuit Diagrams Spout Inlet Water Valve Water Supply Float Chart Control Board Sequence Flow Chart DCM-751BH-OSOperation DiagnosisService Diagnosis Diagnostic ProcedureIce Production Check Page Page Page Page Control Board Check 5VDC CB K9 Connector See Fig High-Pressure Switch HPS5VDC CB K9 Connector Component Pin # Wire Color 5VDC CB K8 Connector Component Pin # Wire Color 5VDC CB K8 Connector See FigGear Motor Protect Relay Gmpr Bin Control BC5VDC 0VDC Portion Signal #5 R Red K4 pin closest 5VDC Power Supply #3 W/BK Connector Pin # Wire Color Neutral LBU Open Closed 24VAC CB K2 ConnectorBin Control Check Float Switch Check and Cleaning Float Switch CheckFloat Switch Cleaning Page Diagnostic Tables No Ice ProductionNo Ice Production Possible Cause Startup Shutdown No Ice Production Possible CauseIce Dispense-Push Button Ice/Water DispensingIce Dispense-Opti-Serve Water Dispense-Push ButtonIII. Controls and Adjustments DCM-751BH Control Board LayoutDCM-751BH-OS K2 Connector Drain Valve #10 W/BUNo. of Beeps Type of Alarm Reset Options Every 5 sec LED Lights and Audible Alarm SafetiesIcemaking Sequence Sequence Step Energized Components Min MaxDefault Dip Switch Settings Settings and AdjustmentsInfrared Sensor Shutdown Delay S1 dip switch 1, 2 Drain Frequency Control S1 dip switchBin Control Selector S1 dip switch Continuous Dispensing Timer S1 dip switch 5Bin Control Shutdown Delay S1 dip switch Factory Use S1 Dip Switch 9ICE Power Switch, Control Switch, and Dispense Mode SwitchOFF DrainDispense Mode Switch ContinuousPortion Service for Refrigerant Lines IV. Removal and Replacement of ComponentsRefrigerant Recovery BrazingEvacuation and Recharge R-404A Evaporator Assembly Components. See Fig Important Notes for Component ReplacementEvaporator Assembly Upper Bearing Wear Check Icemaking UnitRemoval and Replacement of Auger Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator 5b. Lower Housing Removal and Replacement of Gear Motor Dispense Components Dispense Auger and AgitatorDispense and Agitating Motors Maintenance Maintenance ScheduleFrequency Area Task VI. Preparing the Appliance for Periods of Non-Use Page VII. Disposal DCM-751BAH VIII. Technical Information Specification SheetsDesign without prior Potable Water WATER-COOLED Condenser DCM-751BWH779 758 Reference without *marks 738 719 ICE Production Performance Data800 363 Wiring Diagrams DCM-751BH-OS