Hoshizaki HR24A service manual Contents

IMPORTANT
This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this booklet carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this booklet for any further reference that may be necessary.
CONTENTS
Important Safety Information	5
I. Specifications	7
A. Electrical and Refrigerant Data	7
B. Storage Capacity and Dimensions	7
1. Storage Capacity	7
2. Dimensions	8
II. General Information	9
A. Construction	9
B. Sequence of Operation	10
1. Sequence Cycles and Shutdown	10
2. Sequence Flow Chart	12
C. Control Board and Display Module	13
1. Control Board Layout	14
2. Display Module Layout	14
D. Cabinet Temperature	15
E. Display Module Icons	16
F. Control Panel Lockout	16
G. Alarm Safeties	17
H. Service Menu	18
III. Technical Data	24
A. Refrigeration Circuit	24
B. Wiring Diagram	25
IV. Service Diagnosis	26
A. Diagnostic Procedure	26
B. Control Board Check	29
C. Thermistor Check	30
D. Diagnostic Chart	31
V. Replacement of Components	33
A. Service for Refrigerant Lines	33
1. Refrigerant Recovery	33
2. Brazing	34
3. Evacuation and Recharge (R-134a)	34
B. Important Notes for Component Replacement	35
C. Door Reversal	36

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