HoshizakiHoshizaki America, Inc
Cubelet Icemaker / Dispenser Models DCM-500BAH DCM-500BAH-OS
Complete and detailed explanation of the problem
Phone 1-800-233-1940 Technical Service 770 487-2331 Fax
HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA
Attn Hoshizaki Technical Support Department
CONTENTS
A. Diagnostic Procedure
IV. Service Diagnosis
C. Diagnostic Charts
V. Removal and Replacement of Components
1. DCM-500BAH
I. Specifications A. Icemaker
SHAPE OF ICE
2. DCM-500BAH-OS
90/70F
Spare Fuse
3. DCM-500BWH
4. DCM-500BWH-OS
1. DCM-500BAH-OS
II. General Information A. Construction
Evaporator Assembly
2. DCM-500BWH-OS
Inlet Water Valve Float Switch Reservoir Control Box Power Switch
Door Switch Gear Motor Control Switch Dispense Mode Switch
1. DCM-500BAH-OS, DCM-500BWH-OS
B. Ice Making Unit
1. Fill Cycle
C. Sequence of Operation
2. Ice Purge Cycle 60 seconds
3. Freeze Cycle
2. Shutdown & Restart 3. 12 Hour Drain Cycle Shutdown & Restart
1. Startup
D. Control Board
1. Control Board Layout a DCM-500BAH, DCM-500BWH
Control Board
Part Number 2A1592-01
b DCM-500BAH-OS, DCM-500BWH-OS
Control Board
Part Number 2A2649-01
a LED Lights
2. Features
4. Control Board Check Procedure
3. Controls and Adjustments a Portion Control
a Power Supply
b Ice Making Components
c Dispensing Components DCM-500BAH, DCM-500BWH
Red upper Black common Blue lower Magnet towards top Upper Float blue
E. Float Switch
Spring Retainer Clip Magnet towards top Lower Float white
Plastic Retainer Clip
Inlet Water Valve Water Supply Float Switch Water Level Reservoir
III. Technical Information A. Water Circuit and Refrigeration Circuit
Evaporator Overflow Gear Motor Fan Air-Cooled Condenser Access Valve
Water Valve High Pressure Switch Compressor Access Valve
Water-Cooled Condenser Water Supply Out Water Regulating Valve Access
Float Switch
Water Valve High Pressure Switch Access Compressor Valve
2. DCM-500BWH-OS
1. DCM-500BAH, DCM-500BWH
B. Wiring Diagrams
High Pressure Switch
WIRE COLOR CODE
High Pressure Switch
2. DCM-500BAH-OS, DCM-500BWH-OS
WIRE COLOR CODE
Air-Cooled Model
1. Fill Cycle
C. Sequence of Electrical Circuit - Ice Making
WIRE COLOR CODE
2. Ice Purge Cycle
DCM-500BAH
DCM-500BWH
3. Freeze Cycle
WIRE COLOR CODE
Compressor and fan motor start 60 seconds after gear motor starts
DCM-500BAH
4. 12 Hour Drain Cycle / Drain Switch
5. Shutdown
6. Low Water Safety
7. High Pressure Switch
1. Continuous Dispense
D. Sequence of Electrical Circuit - Dispensing
2. Portion Dispense
E. Performance Data
1. DCM-500BAH-OS
1. The data without *marks should be used for reference only
1. The data without *marks should be used for reference only
2. DCM-500BWH-OS
IV. Service Diagnosis A. Diagnostic Procedure
B. Ice Production Check
1. No Ice Production
C. Diagnostic Charts
Problem
Possible Cause
Remedy
Problem
Possible Cause
Remedy
Problem
2. Low Ice Production
Problem
Possible Cause
Problem
3. Other
Possible Cause
Remedy
Problem
4. Dispensing
Possible Cause
Remedy
5. Opti Serve OS Sensors
5b. Ice Dispensing Portion Mode
5a. Ice Dispensing Continuous Mode
5c. Water Dispensing
K5 Pin 3 W/BK
A. Service for Refrigerant Lines
V. Removal and Replacement of Components
1. Refrigerant Recovery
2. Brazing
3. Evacuation and Recharge R-404A
B. Removal and Replacement of Compressor
C. Removal and Replacement of Expansion Valve
D. Removal and Replacement of Evaporator Assembly Components
1. Upper Bearing Wear Check
2. Removal and Replacement of Extruding Head
4. Removal and Replacement of Evaporator
3. Removal and Replacement of Auger
3 Remove the apron panel, then remove the left side panel
4 Recover the refrigerant and store it in an approved container
8 Remove the evaporator bracket and disconnect the water hoses
9 Disconnect the inlet and outlet tubing
5b. Lower Housing
Gear Motor Cover Screws Gear Motor Cover Gear Motor
6. Removal and Replacement of Gear Motor
Gear Motor/Drain Pan Bolts and Washers Gear Motor Bracket Gear Motor
Bracket Bolts Drain Pan Drain Pan Bracket Bolts Drain Pan Bracket
E. Removal and Replacement of Self-Contained Air-Cooled Condenser
F. Removal and Replacement of Water-Cooled Condenser
Water‑Cooled Model Only
G. Removal and Replacement of Water Regulating Valve ‑
I. Removal and Replacement of Fan Motor
H. Adjustment of Water Regulating Valve - Water-Cooled Model Only
K. Removal and Replacement of Drain Valve
J. Removal and Replacement of Inlet or Dispensing Water Valve
L. Removal and Replacement of Dispensing System
1. Dispensing Auger and Agitator
2. Dispensing or Agitating Motor
Agitator Agitating Motor Dispensing Motor Dispensing Auger
6 Install the new motor
A. Cleaning and Sanitizing Instructions
VI. Cleaning and Maintenance
a Cleaning Solution
b Cleaning Procedure
1. Water System
d Sanitizing Procedure - Following Cleaning Procedure
c Sanitizing Solution
b Sanitizing Solution
c Cleaning and Sanitizing Procedure
3 Remove the front cover of the storage bin
B. Maintenance
C. Preparing the Icemaker for Long Storage
5 Close the condenser water supply line drain valve