Table Of Contents - Hoshizaki DCM-300BAH Service Manual

This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
Important Safety Information ................................................................................................. 5
I. Construction and Water/Refrigeration Circuit Diagrams ..................................................... 7
A. Construction .................................................................................................................. 7
1. Air-Cooled Models .................................................................................................... 7
2. Water-Cooled Models .............................................................................................. 8
B. Icemaking Unit .............................................................................................................. 9
C. Water/Refrigeration Circuit Diagrams .......................................................................... 10
1. Air-Cooled Models .................................................................................................. 10
2. Water-Cooled Models .............................................................................................11
II. Sequence of Operation and Service Diagnosis ............................................................... 12
A. Sequence of Operation Flow Chart ............................................................................. 12
B. Service Diagnosis ....................................................................................................... 13
C. Control Board Check ................................................................................................... 18
D. Bin Control Check ....................................................................................................... 26
E. Float Switch Check and Cleaning ............................................................................... 28
F. Diagnostic Tables ......................................................................................................... 30
III. Controls and Adjustments ............................................................................................... 34
A. Control Board Layout .................................................................................................. 35
B. LED Lights and Audible Alarm Safeties ....................................................................... 37
C. Controls and Adjustments ........................................................................................... 38
1. Default Dip Switch Settings .................................................................................... 38
2. Infrared Sensor Shutdown Delay (S1 dip switch 1, 2, 3) ....................................... 38
3. Drain Frequency Control (S1 dip switch 4) ............................................................ 38
4. Continuous Dispensing Timer (S1 dip switch 5 & 6) .............................................. 39
5. Bin Control Selector (S1 dip switch 7) ................................................................... 39
6. Bin Control Shutdown Delay, Agitation, and Ice Purge Timer (S1 dip switch 8) ..... 40
7. Bin Control Shutdown Delay (S1 dip switch 9) ...................................................... 40
8. Factory Use (S1 Dip Switch 10) ............................................................................. 40
D. Switches ..................................................................................................................... 41
IV. Refrigeration Circuit and Component Service Information.............................................. 43
A. Refrigeration Circuit Service Information .................................................................... 43
B. Component Service Information .................................................................................. 46
C. Icemaking Unit ............................................................................................................ 48
D. Dispense Components ................................................................................................ 53
V. Maintenance .................................................................................................................... 54
VI. Preparing the Appliance for Periods of Non-Use ............................................................ 55
VII. Disposal ......................................................................................................................... 57
IMPORTANT
CONTENTS
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