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Manitowoc Manuals
Ice Maker
SD0302A
Technician's handbook
Table Of Contents - Manitowoc SD0302A Technician's Handbook
S series; s300 series; s420 series; s450 series; s500 series; s850 series; s1000 series; s1200 series; s1400w series; s1400a series; s1400n series; s1800w series; s1800a series; s1800n series
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Also See for SD0302A
:
Technician's handbook
(301 pages)
,
Service manual
(168 pages)
,
Installation, use & care manual
(68 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Advertisement
Table of Contents
Safety Notices
3
Procedural Notices
3
Table Of Contents
5
General Information
9
Model Numbers
9
Ice Cube Sizes
10
Personal Injury Potential
10
How To Read A Model Number
10
Model/Serial Number Location
11
Energy Efficient Ice Machine
12
Serial Breaks
12
Ice Machine Warranty Information
13
Commercial Warranty Coverage
14
Installation
16
Location Of Ice Machine
21
Ice Machine Clearance Requirements
22
Ice Machine Heat Of Rejection
23
Remote Condenser Line Set Installation
24
Air Temperature Around The Condenser
24
Calculating Remote Condenser
25
Installation Distances
25
Line Set Length
25
Line Set Rise/Drop
25
Calculated Line Set Distance
26
Maximum Line Set Distance Formula
27
Lengthening Or Reducing Line Set Lengths
27
Connecting A Line Set
28
Component Identification S Model Single Evaporator Models
29
S Model Quad Evaporator Models
30
Maintenance
31
General
31
Cleaning/Sanitizing Procedure
31
Heavily Scaled Cleaning Procedure
31
Cleaning / Sanitizing Procedure
32
Parts Removal For Cleaning/Sanitizing
34
Single Evaporator Ice Machines
34
Remove The Water Curtain
34
Remove The Ice Thickness Probe
34
Quad Evaporator Ice Machines
35
Remove The Water Trough Shield
35
Remove Splash Shields
35
Remove The Water Pump Assembly
35
Procedure To Clean Heavily Scaled Ice Machines
40
Cleaning Procedure
40
Remove Parts For Cleaning
42
Water Inlet Valve
53
Water Dump Valve
54
Drain Line Check Valve
56
Removal From Service/Winterization
57
Self-Contained Air-Cooled Ice Machines
57
Water-Cooled Ice Machines
58
Remote Ice Machines
58
Sequence Of Operation
59
Self Contained Air Or Water Cooled
59
Single & Quad Evaporator Models
59
Initial Start-Up Or Start-Up After Automatic Shut-Off
59
Freeze Sequence
60
Prechill
60
Energized Control Board Lights
60
Harvest Sequence
61
Water Purge
61
Harvest
62
Single Evaporator Models
62
Quad Evaporator Models
62
Automatic Shut-Off
63
Safety Timers
64
Safety Limits
65
Safety Limit Stand-By Mode
66
Warm Water Rinse Cycle
67
After The 200Th Harvest Cycle Ends
67
Self Contained Air & Water-Cooled
68
Single Evaporator Model Energized Parts Chart
68
Self Contained Water-Cooled
70
Remotes
72
Refrigeration System Start-Up
73
Remote Air-Cooled
77
Troubleshooting
81
Quad Evaporator Machines Only
82
Analyzing Why A Safety Limit Stopped The Ice Machine
84
Water System
85
Electrical System
85
Safety Limit #1
85
Safety Limit #2
86
Safety Limit #3
87
Control Board Testing
88
Control Board Test Cycle
88
Troubleshooting By Symptom
89
Ice Machine Stops Running
89
Ice Machine Has A Long Freeze Cycle
89
Ice Machine Stops Running Or Has A History Of Shutting Down
90
Symptom #1 Ice Machine Will Not Run
90
Compressor Electrical Diagnostics
92
Check Resistance (Ohm) Values
92
Single Phase Compressors
92
Three Phase Compressors
92
Check Motor Windings To Ground
93
Compressor Drawing Locked Rotor
93
Compressor Drawing High Amps
93
Low Production, Long Freeze
94
How To Use The Freeze Cycle Refrigeration System
94
Operational Analysis Table
94
Symptom #2 - Freeze Cycle Refrigeration System Operational Analysis Tables
96
S Models Single Expansion Valve
97
Operational Analysis Table Procedures
105
Before Beginning Service
105
Freeze Cycle Refrigeration System Opera Tional Analysis Table Procedures
105
Ice Production Check
106
Installation/Visual Inspection Checklist
108
Inadequate Clearances
108
Ice Machine Is Not Level
108
Condenser Is Dirty
108
Water System Checklist
109
Water Area (Evaporator) Is Dirty
109
Water Inlet Pressure Not Between 20 And 80 Psig
109
Water Filtration Is Plugged (If Used)
109
Ice Formation Pattern
110
Normal Ice Formation
110
Extremely Thin At Evaporator Outlet
111
Extremely Thin At Evaporator Inlet
111
No Ice Formation
111
Analyzing Discharge Pressure In The Freeze Cycle
112
Freeze Cycle Discharge Pressure High Checklist
113
Improper Installation
113
Analyzing Suction Pressure
115
Suction Pressure High Checklist
116
Suction Pressure Low Checklist
117
Single Expansion Valve Ice Machines Comparing
118
Evaporator Inlet And Outlet Temperatures
118
Multiple Expansion Valve Ice Machines Comparing
119
Harvest Valve Analysis
120
Discharge Line Temperature Analysis
122
Water Regulating Valve
123
Valve Not Maintaining Discharge Pressure
123
Final Analysis
124
Harvest Valve Leaking
124
Low Charge/Txv Starving
124
Txv Flooding
125
Compressor
125
Harvest Pressure Valve
125
Harvest Problems
126
Normal Ice Cube
126
Melted Out Ice Cube
126
Ice Will Not Harvest, Cubes Are Not Melted
127
Symptom #3 - Traditional Remotes Only
129
Will Not Harvest, Melted Cubes
131
Component Check Procedures
135
Electrical Components
135
Main Fuse
135
Check Procedure
135
Ice/Off/Clean Toggle Switch
136
Bin Switch
137
Specifications
137
Bin Switch Fails Open
138
Bin Switch Fails Closed
138
Continuity Test
138
Water Curtain/Ice Damper Removal Notes
139
Cleaning The Ice Thickness Or Water Level Probe
140
Water Level Control Circuitry
141
Freeze Cycle Water Level Setting
141
Water Inlet Valve Safety Shut-Off
141
Freeze Cycle Circuitry
141
Diagnosing Water Level Control Circuitry
142
Disconnect Probe From Control Board
145
Ice Thickness Probe (Harvest Initiation)
146
Ice Probe Light
146
Freeze Time Lock-In Feature
146
Maximum Freeze Time
147
Ice Thickness Check
147
Ice Thickness Adjustment
147
Diagnosing Ice Thickness Control Circuitry
148
Ice Probe Light On
148
Ice Probe Light Off
148
Harvest Cycle Circuitry
150
Harvest Assist Air Pump
151
Diagnosing Start Components
154
Capacitor
154
Relay
155
Relay Operation Check
155
Ptcr
156
Ptcr Operation Check
157
Refrigeration Components
158
High Pressure Cutout (Hpco) Control
158
Replace The Hpco Control If It
158
Fan Cycle Control
159
Harvest Pressure Regulating (Hpr)
161
Remotes Only
161
Freeze Cycle
162
Harvest Cycle
162
Hpr Diagnostics
162
Head Pressure Control Valve
164
Fan Cycle Control Vs. Head Pressure Control Valve
166
Low Pressure Cutout (Lpco) Control
167
Harvest Pressure Solenoid Valve
168
Refrigerant Recovery/Evacuation
169
Connections
169
Self-Contained Recovery/Evacuation
170
Self-Contained Charging Procedures
171
Normal Remote Model Procedures
173
Remote Recovery/Evacuation
174
Recovery/Evacuation Connections
175
Remote Charging Procedures
176
Remote Charging Connections
177
System Contamination Clean-Up
178
Determining Severity Of Contamination
178
Contamination Cleanup Chart
179
Cleanup Procedure
180
Mild System Contamination
180
Severe System Contamination
181
Replacing Pressure Controls Without Removing Refrigerant Charge
183
Using Pinch-Off Tool
184
Filter-Driers
186
Total System Refrigerant Charge
187
Cycle Times/24-Hour Ice Production/ Refrigerant Pressure Charts
191
Refrigerant Pressure Charts
191
Cycle Times
192
24 Hour Ice Production
192
Operating Pressures
192
S300 Series
192
S320 Series
196
S420 Series
198
S450 Series
202
S500 Series
206
S600 Series
215
S850 Series
218
S1000 Series
227
S1200 Series
236
S1400 Series
242
S1600 Series
253
S1800 Series
256
S3300 Series
265
Wiring Diagrams
267
Wiring Diagram Legend
267
Wiring Diagrams Before Energy Efficient & Energystar Machines
268
Self Contained - 1 Phase
268
Self Contained - 3 Phase
271
Remote - 1 Phase
272
Remote - 3 Phase
274
Self-Contained - 1 Phase
275
Self-Contained - 3 Phase
276
Ergystar Machines
279
Water-Cooled - 3 Phase
284
Electronic Control Board
290
Single And Twin Evaporator Without Test Button
290
Single And Twin Evaporator With Test Button
291
Refrigeration Tubing Schematics
293
Remote Models
295
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Troubleshooting By Symptom
89
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This manual is also suitable for:
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Sy0324a
Sd0323w
Sr0420a
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Sr0501w
Sd0503w
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Sd0592n
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Sd0602a
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Sd0603w
Sy0605w
Sd0692n
Sr0850a
Sy0694n
Sd0852a
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Sr0851w
Sd0853w
Sy0855w
Sr0890n
Sd0892n
Sy0894n
Sr1000a
Sd1002a
Sr1001w
Sy1004a
Sd1003w
Sy1005w
Sr1090n
Sd1092n
Sy1094n
Sd1202a
Sy1204a
Sd1203w
Sd1402a
Sy1205w
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Sd1403w
Sy1405w
Sd1492n
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Sr1600a
Sd1602a
Sy1604a
Sr1601w
Sy1605w
Sd1603w
Sd1692n
Sr1690n
Sy1694n
Sr1800a
Sd1802a
Sy1804a
Sr1801w
Sd1803w
Sy1805w
Sr1890n
Sd1892n
Sy1894n
Sd3303w
Sd3303whp
Sy3305w
Sy0304a
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Sd0322a
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