Hoshizaki service manual DCM-750BAH-OS, DCM-750BWH-OS

Page 16

b) DCM-750BAH-OS, DCM-750BWH-OS

Flush Switch

Must be left in the "P" position, otherwise the internal drain timer will not operate.

Counter Reset Button (not used in this application)

Dispensing Components See "III.B. Wiring Diagrams" for details.

Bin Control,

Control Switch,

Low Water Safety

High

10.5V

Pressure

Transformer

Switch

 

Portion Control

Microprocessor (board revision level

"POWER" LED

Timer

(lights when

indicated by last 2 digits on label)

 

power is supplied

 

 

 

"WTR" LED

"ICE" LED

"AM" LED

to the board)

 

(X5 Relay)

(X4 Relay)

(X3 Relay)

"GM" LED

Dispensing

Shutter Solenoid,

Agitating Motor

(X1 Relay)

Water Valve

Dispensing Auger

 

"COMP" LED

Gear Motor

 

Motor

 

 

 

 

(X2 Relay)

 

 

 

Compressor,

 

 

 

Fan Motor

 

"FLUSH" LED

 

 

 

(X6 Relay)

 

 

 

Drain Valve

 

 

 

24V Supply Out

 

 

 

Gear Motor

 

 

 

24V In 115V In

 

 

Drain Valve

24V In

115V In

Protect Relay

115V In

 

Circuit

24V Out

 

 

Gear Motor

 

 

 

 

Dispensing

Dispensing Motor

Agitating Motors

115V Out

Water Valve

115V Out

115V Out

 

 

 

24V Out

Control Board

Part Number 2A2649-01

16

Image 16
Contents DCM-750BAH DCM-750BAH-OS DCM-750BWH DCM-750BWH-OS Hoshizaki AMERICA, INC Contents Page Specifications Icemaker DCM-750BAHDCM-750BAH-OS Water TEMP. FDCM-750BWH Potable Water WATER-COOLED CondenserDCM-750BWH-OS Potable Water Water Cooled CondenserII. General Information Construction DCM-750BWH-OS Ice Making Unit Sequence of Operation Startup Control Board Control Board Layout DCM-750BAH, DCM-750BWH Control BoardDCM-750BAH-OS, DCM-750BWH-OS Features LED LightsControls and Adjustments Portion Control Control Board Check ProcedurePower Supply Ice Making ComponentsDispensing Components DCM-750BAH, DCM-750BWH Float Switch Inlet Water Valve DCM-750BWH-OS Wiring Diagrams Wire Color CodeDCM-750BAH-OS, DCM-750BWH-OS Sequence of Electrical Circuit Ice Making DCM-750BWH-OSIce Purge Cycle Orange WHITE/BLACK Pink WHITE/BROWN RED WHITE/BLUE Violet Hour Drain Cycle / Drain Switch Shutdown Low Water Safety High Pressure Switch Sequence of Electrical Circuit Dispensing Continuous DispensePortion Dispense Performance Data 192Approximate IV. Service Diagnosis Diagnostic Procedure Ice Production Check Diagnostic Charts No Ice ProductionProblem Possible Cause Remedy Problem Possible Cause Remedy Low Ice Production Other Dispensing Opti Serve OS Sensors 5b. Ice Dispensing Portion Mode 5a. Ice Dispensing Continuous Mode5c. Water Dispensing Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery BrazingEvacuation and Recharge R-404A Removal and Replacement of Compressor Removal and Replacement of Expansion Valve Removal and Replacement of Evaporator Assembly Components Removal and Replacement of Extruding Head Upper Bearing Wear CheckRemoval and Replacement of Auger Removal and Replacement of EvaporatorPage 5b. Lower Housing Removal and Replacement of Gear Motor Page Removal and Replacement of Water-Cooled Condenser Page Adjustment of Water Regulating Valve Water-Cooled Model Only Removal and Replacement of Fan MotorRemoval and Replacement of Inlet or Dispensing Water Valve Removal and Replacement of Drain ValveDispensing Auger and Agitator Removal and Replacement of Dispensing SystemDispensing or Agitating Motor Page VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Solution Water SystemSanitizing Solution Dispensing ComponentsBin Control Bracket Snap Pin Maintenance Frequency Area TaskPreparing the Icemaker for Long Storage