Manitowoc QY0874C User Manual

Refrigeration System
Refrigeration System Diagnostics..................... 123
General......................................................... 123
Refrigeration System Operation................... 123
Ice Machine will Not Harvest Diagnostics ......... 127
Harvest Cycle Diagnostic List....................... 127
Ice Production Check........................................ 128
Installation/Visual Inspection Checklist......... 129
Water System Checklist ............................... 130
Ice Formation Pattern................................... 131
Evaporator Tubing Routing........................... 131
Safety Limits................................................. 134
Analyzing Suction Pressure.......................... 142
Cool Vapor Valve .............................................. 146
Normal Operation......................................... 146
Cool Vapor Valve Analysis........................... 147
Freeze Cycle Suction Line Temperature Analysis
..................................................................... 148
Refrigeration Component Diagnostic Charts..... 150
General......................................................... 150
Procedure..................................................... 150
Final Analysis ............................................... 150
Refrigeration Component Diagnostic Charts..... 152
Single Expansion Valve – Q0600C/0800C/
Q1000C/SU1000C........................................ 152
Dual Expansion Valve – Q1400C/QDUAL.... 157
Pressure Control Specifications 
and Diagnostics................................................. 160
Headmaster Control Valve ........................... 160
Water Regulating Valve................................ 170
Fan Cycle Control......................................... 171
High Pressure Cutout (HPCO) Control......... 172
Low Pressure Cutout (LPCO) Control.......... 173
QuietQube
®
Tubing Schematics........................ 174
Q0600C/Q0800C/Q1000C ........................... 174
Q1400C/QDUALC........................................ 175

Manitowoc QY0874C Specifications

General

Brand	Manitowoc
Model	QY0874C
Category	Ice Maker
Language	English