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KM-251BAH
Hoshizaki KM-251BAH Service Manual
43 pages
Manual
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1
Hoshizaki
“A Superior Degree
of Reliability”
www
.hoshizaki.com
Model
KM-251BAH
Self-Contained Crescent Cuber
Hoshizaki America, Inc.
Number: 73140
Issued: 9-15-2006
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Table of Contents
Table of Contents
3
Specifications
5
Icemaker
5
General Information
6
Construction
6
Sequence of Operation
7
One Minute Fill Cycle
7
Initial Harvest Cycle
7
Freeze Cycle
7
Normal Harvest Cycle
7
Control Board
10
Control Board Layout
11
Features
12
A) Maximum Water Supply Period - 6 Minutes
12
B) Harvest Backup Timer and Freeze Timer
12
C) High Temperature Safety
12
D) Low Water Safety
12
E) High Voltage and Low Voltage Cut-Outs
12
F) LED Lights and Audible Alarm Safeties
13
Controls and Adjustments
14
A) Default Dip Switch Settings
14
B) Harvest Control - Thermistor
14
C) Harvest Timer (S4 Dip Switch 1 & 2)
15
D) S4 Dip Switch 3, 4, 5, 6, 7, & 8
15
E) Freeze Timer (S4 Dip Switch 9 & 10)
15
F) Float Switch Control and Refill Counter (S5 Dip Switch 1 through 5)
15
G) bin Control
16
Bin Control Troubleshooting
16
A) Machine will Not Start
16
B) Machine will Not Shut off
16
Float Switch Troubleshooting
16
Control Board Check Procedure
17
Control Board Replacement
18
Technical Information
19
Water Circuit and Refrigeration Circuit
19
Wiring Diagram
20
Performance Data
21
Service Diagnosis
22
10-Minute Diagnostic Procedure
22
Diagnostic Charts
23
No Ice Production
23
Evaporator Is Frozen up
26
Low Ice Production
27
Abnormal Ice
27
Other
28
Removal and Replacement of Components
29
Servicing the Refrigeration Circuit
29
Refrigerant Recovery
29
Evacuation and Recharge (R-404A)
29
Brazing
30
Removal and Replacement of Compressor
30
Removal and Replacement of Drier
31
Removal and Replacement of Expansion Valve
32
Removal and Replacement of Hot Gas Valve
33
Removal and Replacement of Evaporator
34
Removal and Replacement of Air-Cooled Condenser
34
Removal and Replacement of Thermistor
35
Removal and Replacement of Fan Motor
36
Removal and Replacement of Freeze or Harvest Water Valve
36
Removal and Replacement of Wash Valve
37
Removal and Replacement of Pump Motor
37
Removal and Replacement of Spray Tube
38
Cleaning and Maintenance Instructions
39
Cleaning
39
Cleaning Procedure
39
Sanitizing Procedure - Following Cleaning Procedure
41
Maintenance
41
Preparing the Icemaker for Long Storage
42
Other manuals for Hoshizaki KM-251BAH
Instruction Manual
19 pages
Parts List
20 pages
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Hoshizaki KM-251BAH Specifications
General
Ice Type
Cube
Condenser
Air-Cooled
Refrigerant
R-404A
Power Supply
115V/60/1
Drain Connection
3/4 in
Certification
NSF, UL
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