Hoshizaki DCM-500BAH-OS, DCM-500BWH-OS service manual Contents

IMPORTANT
This manual should be read carefully before the icemaker is serviced or
maintenance operations are performed. Only qualified service technicians
should install, service, and maintain the icemaker. Read the warnings
contained in this booklet carefully as they give important information regarding
safety. Please retain this booklet for any further reference that may be
necessary.
CONTENTS
I. Specifications	5
A. Icemaker	5
1. DCM-500BAH	5
2. DCM-500BAH-OS	6
3. DCM-500BWH	7
4. DCM-500BWH-OS	8
II. General Information	9
A. Construction	9
B. Ice Making Unit	11
C. Sequence of Operation	12
1. Fill Cycle	12
2. Ice Purge Cycle (60 seconds)	12
3. Freeze Cycle	12
4. Drain Cycle	12
5. Shutdown	12
D. Control Board	14
1. Control Board Layout	15
a) DCM-500BAH, DCM-500BWH	15
b) DCM-500BAH-OS, DCM-500BWH-OS	16
2. Features	17
3. Controls and Adjustments	18
4. Control Board Check Procedure	18
E. Float Switch	20
III. Technical Information	21
A. Water Circuit and Refrigeration Circuit	21
B. Wiring Diagrams	23
1. DCM-500BAH, DCM-500BWH	23
2. DCM-500BAH-OS, DCM-500BWH-OS	24
C. Sequence of Electrical Circuit – Ice Making	25
1. Fill Cycle	25
2. Ice Purge Cycle	26
3. Freeze Cycle	27
4. 12 Hour Drain Cycle / Drain Switch	28
5. Shutdown	29
6. Low Water Safety	30
7. High Pressure Switch	31
D. Sequence of Electrical Circuit – Dispensing	32
1. Continuous Dispense	32
2. Portion Dispense	33

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