Hoshizaki DCM-750BWH-OS, DCM-750BAH-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-750BAH		5
2. DCM-750BAH-OS		6
3. DCM-750BWH		7
4. DCM-750BWH-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-750BAH, DCM-750BWH	15
	b) DCM-750BAH-OS, DCM-750BWH-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-750BAH, DCM-750BWH		23
2. DCM-750BAH-OS, DCM-750BWH-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