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KMD-850MAH
Hoshizaki KMD-850MAH Service Manual
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Hoshizaki
“A Superior Degr
ee
of Reliability”
www
.hoshizaki.com
Models
KMD-850MAH
KMD-850MWH
KMD-850MRH
Modular Crescent Cuber
Hoshizaki America, Inc.
SE
RV
ICE MA
NU
AL
™
Number: 73163
Issued: 9-3-2008
2
Table of Contents
Table of Contents
3
Specifications
6
Icemaker
6
KMD-850MAH (Air-Cooled)
6
KMD-850MWH (Water-Cooled)
7
KMD-850MRH (Remote Air-Cooled)
8
Condenser Unit
9
Urc-9F
9
Specifications
10
General Information
11
Construction
11
KMD-850MAH (Air-Cooled)
11
KMD-850MWH (Water-Cooled)
12
KMD-850MRH (Remote Air-Cooled)
13
Sequence of Operation
14
One Minute Fill Cycle
14
Initial Harvest Cycle
14
Freeze Cycle
14
Pump-Out Cycle
14
Normal Harvest Cycle
15
Control Board
17
Control Board Layout
18
Features
19
A) Maximum Water Supply Period - 6 Minutes
19
B) Harvest Backup Timer and Freeze Timer
19
C) High Temperature Safety
19
D) Low Water Safety
19
E) High Voltage and Low Voltage Cut-Outs
19
F) LED Lights and Audible Alarm Safeties
20
Controls and Adjustments
21
A) Default Dip Switch Settings
21
B) Harvest Timer (S4 Dip Switch 1 & 2)
21
C) Pump-Out Timer (S4 Dip Switch 3 & 4)
22
D) Pump-Out Frequency Control (S4 Dip Switch 5 & 6)
22
E) S4 Dip Switch 7 & 8
22
F) Freeze Timer (S4 Dip Switch 9 & 10)
23
G) Float Switch Control (S5 Dip Switch 1 through 5)
23
Control Board Check Procedure
23
Control Board Replacement
24
Harvest Control - Thermistor
24
Thermistor Check Procedure
24
Float Switch
24
Float Switch Check Procedure
24
Float Switch Cleaning
26
Bin Control
27
Explanation of Operation
27
Bin Control Check Procedure
27
Technical Information
28
Water Circuit and Refrigeration Circuit
28
KMD-850MAH (Air-Cooled)
28
KMD-850MWH (Water-Cooled)
29
KMD-850MRH (Remote Air-Cooled)
30
Wiring Diagrams
31
KMD-850MAH and KMD-850MWH
31
Kmd-850Mrh
32
Performance Data
33
KMD-850MAH (Air-Cooled)
33
KMD-850MWH (Water-Cooled)
34
KMD-850MRH (Remote Air-Cooled)
35
Service Diagnosis
36
10-Minute Diagnostic Procedure
36
Diagnostic Charts
37
No Ice Production
37
Evaporator Is Frozen up
41
Low Ice Production
42
Abnormal Ice
42
Other
43
Removal and Replacement of Components
44
Service for Refrigerant Lines
44
Refrigerant Recovery
44
Brazing
44
Evacuation and Recharge (R-404A)
45
Removal and Replacement of Compressor
46
Removal and Replacement of Expansion Valve
47
Removal and Replacement of Hot Gas Valve or Liquid Line Valve
48
Removal and Replacement of Evaporator
49
Removal and Replacement of Water Regulating Valve - Water-Cooled Model Only
49
Adjustment of Water Regulating Valve - Water-Cooled Model Only
50
Removal and Replacement of Headmaster (Condensing Pressure Regulator - C
51
Remote Air-Cooled Model Only
51
Removal and Replacement of Thermistor
52
Removal and Replacement of Fan Motor
53
Removal and Replacement of Inlet Water Valve or Drain Valve
53
Removal and Replacement of Pump Motor
54
Removal and Replacement of bin Control
55
Cleaning and Maintenance
56
Cleaning and Sanitizing Instructions
56
Cleaning Procedure
57
Sanitizing Procedure - Following Cleaning Procedure
58
Maintenance
59
Preparing the Icemaker for Long Storage
60
Other manuals for Hoshizaki KMD-850MAH
Instruction Manual
38 pages
Parts List
32 pages
Specifications
2 pages
4
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Hoshizaki KMD-850MAH Specifications
General
Condenser Type
Air-Cooled
Refrigerant
R-404A
Electrical
208-230V/60Hz/1Ph
Production Capacity
850 lbs/24 hrs
Water Supply
Potable water supply required
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