Hoshizaki 73183 service manual Contents

IMPORTANT
This manual should be read carefully before the unit is serviced or maintenance
operations are performed. Only qualified service technicians should install,
service, and maintain the unit. 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
Important Safety Information	5
I. Specifications	7
A. Nameplate Ratings	7
B. Dimensions	7
1. Refrigerated Volume and Shelf Space	7
2. One Section/Two Section/Three Section	8
II. General Information	9
A. Construction	9
1. One Section	9
2. Two Section	10
3. Three Section	11
B. Sequence of Operation	12
1. Sequence Cycles and Shutdown	12
a) Refrigerator	12
b) Freezer	13
2. Sequence Flow Charts	14
a) Refrigerator	14
b) Freezer	15
C. Display Module	16
1. Display Module Layout	16
2. Controls and Adjustments	17
D. Control Module	18
1. Control Module Layout	18
2. Alarm Safeties	19
E. Compressor Overload, Short Cycle Protection, and High-Pressure Switch	20
1. Compressor External or Internal Overload	20
2. Short-Cycle Protection	20
3. High-Pressure Switch	20
F. Mullion/Perimeter Heater	20
G. Thermistors	20
III. Technical Data	21
A. Refrigeration Circuit	21
B. Wiring Diagrams	22
IV. Service Diagnosis	27
A. Diagnostic Procedure	27
1. Refrigerator	28
2. Freezer	30
B. Control Module Check	33
C. Thermistor Check	34

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