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Q270
Manitowoc Q270 User Manual
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96
Part Number STH039 8/13
Refrigerant Recovery/Eva
cuation
RECOVERY AND RECH
ARGING PROCEDURES
Requirements and procedures
vary by loca
tion. Follo
w
your local laws governing the recovery
, evacuatio
n
and charging of equipmen
t that contains propane
refrigerant.
103
105
Table of Contents
Safety Notices
2
Table of Contents
9
General Information
13
Model Numbers
13
How to Read a Model Number
14
Model/Serial Number Location
15
Ice Machine Warranty Information
16
Owner Warranty Registration Card
16
Commercial Warranty Coverage
16
Residential Warranty Coverage
18
Installation
21
Location of Ice Machine
21
Ice Machine Clearance Requirements
22
Ice Machine Heat of Rejection
22
Leveling the Ice Machine
23
Electrical Requirements
24
Component Identification
25
Evaporator Compartment
26
Q270 Ice Machines
27
Maintenance
29
Ice Machine Inspection
29
Exterior Cleaning
29
Cleaning the Condenser
30
Air-Cooled Condenser
30
Interior Cleaning and Sanitizing
32
Removal from Service/Winterization
45
Operation
47
Initial Start-Up or Start-Up after Automatic Shut-Off
47
Freeze Sequence
47
Harvest Sequence
48
Automatic Shut-Off
48
Energized Parts Chart
49
Operational Checks
51
Troubleshooting
55
Ice Machine will Not Run
55
Diagnosing Ice Thickness Control Circuitry
56
Ice Production Check
59
Installation and Visual Inspection Checklist
60
Water System Checklist
61
Ice Formation Pattern
62
Safety Limit Feature
64
Analyzing Discharge Line Temperature
70
Analyzing Suction Temperature
72
Hot Gas Valve
77
Comparing Evaporator Inlet/Outlet Temperatures
81
Discharge Line Temperature Analysis
82
Refrigeration Component Diagnostic Chart
84
Final Analysis
86
Refrigeration Component Diagnostic Chart
87
Component Check Procedures
91
Main Fuse
91
Bin Switch
92
Diagnosing Start Components
95
Capacitor
95
Relay
95
ON/OFF/WASH Toggle Switch
96
Ice Thickness Probe
97
Ice Thickness Check
98
Compressor Electrical Diagnostics
99
Fan Cycle Control
101
High Pressure Cutout (HPCO) Control
102
Liquid Line Filter-Driers
103
Refrigerant Recovery/Evacuation
104
Recovery and Recharging Procedures
104
Q270 Condenser Fan Motor Replacement
105
Component Specifications
107
Main Fuse
107
Bin Switch
107
ON/OFF/WASH Toggle Switch
107
Fan Control Cycle
107
High Pressure Cutout (HPCO) Control
108
Total System Refrigerant Charge
108
Cycle Times, 24 Hr. Ice Production and Refrigerant Temperature Charts
109
Q210 Self-Contained Air-Cooled
110
Q270 Self-Contained Air-Cooled
111
Wiring Diagrams
113
Q210
114
Q270
115
Electronic Control Boards
116
Tubing Schematic
117
4
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Manitowoc Q270 Specifications
General
Brand
Manitowoc
Model
Q270
Category
Ice Maker
Language
English
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