Hoshizaki DCM-750BWH 5a. Ice Dispensing Continuous Mode, 5b. Ice Dispensing Portion Mode

Page 45

Problem

Possible Cause

 

Remedy

 

 

 

 

[2] No water dispensed.

a) OS Sensor

1. Dirty sensor.

1. Clean.

 

 

2. Defective.

2. See chart 5c below.

 

b) Dispense Mode Switch

1. Wrong setting.

1. Move to desired setting.

 

 

2. Bad contacts.

2. Check for continuity and

 

 

 

replace.

 

 

3. Loose connection.

3. Tighten.

 

c) Control Board

1. Loose connection.

1. Tighten.

 

 

2. Defective.

2. See "II.D.4. Control

 

 

 

Board Check Procedure"

 

 

 

and chart 5c below.

 

 

 

 

5a. Ice Dispensing "Continuous" Mode

Component

Control Board

Sensor

 

Control Board /Other

Sensor

On

Off

 

 

 

 

 

 

 

 

Solenoid

K2 Pin 6 LBU

-

To

Neutral/GND

-

120VAC

0VAC

Sensor

K5 Pin 4 W/0

R

To

K5 Pin 5 Y

WH

5VDC

0VDC

K5 Pin 6 W/BR

BK

5VDC

5VDC

 

 

 

 

5b. Ice Dispensing "Portion" Mode

Component

Control Board

Sensor

 

Control Board /Other

Sensor

On

Off

Solenoid

K2 Pin 6 LBU

-

To

Neutral/GND

-

120VAC

0VAC

Sensor

K5 Pin 1 W/R

R

To

K5 Pin 2 W/BU

WH

5VDC

0VDC

K5 Pin 3 W/BK

BK

5VDC

5VDC

 

 

 

 

5c. Water Dispensing

Component

Control Board

 

Control Board /Other

On

Off

 

 

 

 

 

 

Solenoid

K2 Pin 8 DBU

To

K4 Pin 2 (LBU)

24VAC

0VAC

Sensor

K5 Pin 7 R

To

K5 Pin 8 WH

5VDC

0VDC

K5 Pin 9 BK

5VDC

5VDC

 

 

 

45

Image 45
Contents DCM-750BAH DCM-750BAH-OS DCM-750BWH DCM-750BWH-OS Hoshizaki AMERICA, INC Contents Page DCM-750BAH Specifications IcemakerWater TEMP. F DCM-750BAH-OSPotable Water WATER-COOLED Condenser DCM-750BWHPotable Water Water Cooled Condenser DCM-750BWH-OSII. General Information Construction DCM-750BWH-OS Ice Making Unit Sequence of Operation Startup Control Board Control Board Control Board Layout DCM-750BAH, DCM-750BWHDCM-750BAH-OS, DCM-750BWH-OS LED Lights FeaturesControl Board Check Procedure Controls and Adjustments Portion ControlPower Supply Ice Making ComponentsDispensing Components DCM-750BAH, DCM-750BWH Float Switch Inlet Water Valve DCM-750BWH-OS Wire Color Code Wiring DiagramsDCM-750BAH-OS, DCM-750BWH-OS DCM-750BWH-OS Sequence of Electrical Circuit Ice MakingIce Purge Cycle Orange WHITE/BLACK Pink WHITE/BROWN RED WHITE/BLUE Violet Hour Drain Cycle / Drain Switch Shutdown Low Water Safety High Pressure Switch Continuous Dispense Sequence of Electrical Circuit DispensingPortion Dispense 192 Performance DataApproximate IV. Service Diagnosis Diagnostic Procedure Ice Production Check No Ice Production Diagnostic ChartsProblem Possible Cause Remedy Problem Possible Cause Remedy Low Ice Production Other Dispensing Opti Serve OS Sensors 5a. Ice Dispensing Continuous Mode 5b. Ice Dispensing Portion Mode5c. Water Dispensing Service for Refrigerant Lines Removal and Replacement of ComponentsRefrigerant Recovery BrazingEvacuation and Recharge R-404A Removal and Replacement of Compressor Removal and Replacement of Expansion Valve Removal and Replacement of Evaporator Assembly Components Upper Bearing Wear Check Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator Removal and Replacement of AugerPage 5b. Lower Housing Removal and Replacement of Gear Motor Page Removal and Replacement of Water-Cooled Condenser Page Removal and Replacement of Fan Motor Adjustment of Water Regulating Valve Water-Cooled Model OnlyRemoval and Replacement of Drain Valve Removal and Replacement of Inlet or Dispensing Water ValveRemoval and Replacement of Dispensing System Dispensing Auger and AgitatorDispensing or Agitating Motor Page Cleaning and Sanitizing Instructions VI. Cleaning and MaintenanceWater System Cleaning SolutionDispensing Components Sanitizing SolutionBin Control Bracket Snap Pin Frequency Area Task MaintenancePreparing the Icemaker for Long Storage