Manitowoc Q450 User Manual

–113–
4. Using the information gathered, refer to the chart
below.
NOTE: A headmaster that will not bypass, will function
properly with condenser air temperatures of
approximately 70°F (21.1°C) or above. When the
temperature drops below 70°F (21.1°C), the
headmaster fails to bypass and the ice machine
malfunctions. Lower ambient conditions can be
simulated by rinsing the condenser with cool water
during the freeze cycle.
Symptom
Probable
Cause
Corrective
Measure
Valve not
maintaining
pressures
Non-
approved
valve
Install a Manitowoc
Headmaster control
valve with proper
setting
Discharge pressure
low; Liquid line
entering receiver
feels warm to hot
Ice machine
low on
charge
See “Low on
Charge Verification”
Discharge pressure
extremely high;
Liquid line entering
receiver feels hot
Valve stuck in
bypass
Replace valve
Discharge pressure
low; Liquid line
entering receiver
feels extremely cold
Valve not
bypassing
Replace valve

Manitowoc Q450 Specifications

General

Brand	Manitowoc
Model	Q450
Category	Ice Maker
Language	English