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Hoshizaki
KM-320MAH service manual KM-320MWH
Models:
KM-320MWH
KM-320MAH
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50 pages
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Specs
Install
B. Wiring Diagram
K. Removal and Replacement of Pump Motor
Maintenance
Number Issued Revised
The voltage safety automatically resets
Cleaning Procedure
b Defrost Timer
f LED Lights and Audible Alarm Safeties
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KM-320MWH
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Contents
Modular Crescent Cuber Models KM-320MAH KM-320MWH
Number Issued Revised
“A Superior Degree of Reliability”
HoshizakiHoshizaki America, Inc
Page
CONTENTS
VI. Cleaning and Maintenance Instructions
K. Removal and Replacement of Pump Motor
L. Removal and Replacement of Spray Tubes
B. Cleaning and Sanitizing Instructions
I. Specifications A. KM-320MAH air-cooled
B. KM-320MWH water-cooled
II. General Information A.Construction
1.KM-320MAH air-cooled
2. KM-320MWH water-cooled
B. Controller Board
Features of Control Products E Controller Board
b Defrost Timer
1.Solid-StateControl
f LED Lights and Audible Alarm Safeties
c High Temperature Safety - 127 ± 7F 53 ± 4C
d Low Water Safety
e High Voltage Cut-out
Check for defrost problem stuck HGV
factory setting
Type of Alarm
temperature 127F
Control Products HOS-001ABoard
Water Valve
3.Sequence 1st Cycle
Water Valve
Hot Gas Valve
Drain Pump Hot Gas Valve Defrost Cycle Freeze
2nd Cycle and after with pump drain
Cycle Pump, Fan & Line Valve
Water Valve Hot Gas Valve Defrost Cycle Freeze
2nd Cycle and after with no pump drain
Cycle Pump, Fan & Line Valve
4. Controls and Adjustments
bDefrost Timer
a Defrost Control
c Drain Timer
d Drain Counter
f Bin Control
e Freeze Timer
5. Checking the Controller Board
3Reconnect the float switch connector to the controller board. After the first 5 minutes of the freeze cycle, disconnect the float switch leads from the controller board. At this point, the unit should start the defrost cycle
A. Water Circuit and Refrigerant Circuit
III. Technical Information
1. KM-320MAH
2. KM-320MWH
B. Wiring Diagram
1. KM-320MAH, KM-320MWH
C. Timing Chart
Page
D. Performance Data
1. KM-320MAH
2. KM-320MWH
APPROXIMATE ICE
Possible Cause
IV. Service Diagnosis A. No Ice Production
Problem
Remedy
Remedy
Problem
Possible Cause
j Water Supply Line
Remedy
Problem
Possible Cause
c Overload Protector
Problem
B. Evaporator is Frozen Up
Problem
Possible Cause
Remedy
Problem
Possible Cause
c Controller Board
E. Other
C. Low Ice Production
D. Abnormal Ice
Problem
1. Refrigerant Recovery
V. Removal and Replacement of Components
A.Service for Refrigerant Lines
2.Evacuation and Recharge R-404A
B.Brazing DANGER
C. Removal and Replacement of Compressor
D. Removal and Replacement of Drier
E.Removal and Replacement of Expansion Valve
7Install a new drier
G.Removal and Replacement of Evaporator
H. Removal and Replacement of Thermistor
I. Removal and Replacement of Fan Motor
J.Removal and Replacement of Water Valve
K. Removal and Replacement of Pump Motor
L.Removal and Replacement of Spray Tubes
Water‑Cooled Model Only
Page
VI. Cleaning and Maintenance Instructions
A. Preparing the Icemaker for Long Storage
Page
B. Cleaning and Sanitizing Instructions
1.Cleaning Procedure
15Move the control switch to the ICE position
2Storage Bin and Scoop
C. Maintenance
1Stainless Steel Exterior
3Condenser except water-cooledmodel
