Self Contained Air Cooled Models; Fan Cycle Control - Manitowoc QF0400 Technician's Handbook

Self Contained Air Cooled Models

FAN CYCLE CONTROL

(Self-Contained Air-Cooled Models Only)
FUNCTION
Cycles the fan motor on and off to maintain proper
operating discharge pressure.
The fan cycle control closes on an increase, and
opens on a decrease in discharge pressure.
Model
QF800/QC700
CHECK PROCEDURE
1. Verify fan motor windings are not open or
grounded, and fan spins freely.
2. Connect manifold gauges to ice machine.
3. Hook voltmeter in parallel across the fan cycle
control, leaving wires attached.
4. Refer to chart below.
FCC Setpoint:
Above Cut-In
Below Cut-Out
Part Number 80-1230-9 10/10
Specifications
Cut-In (Close)
250 ±5
(1723 kPa ±.34)
(17.23 bar ±.34)
Reading Should
Be:
0 Volts
Line Voltage
Cut-Out (Open)
200 ±5
(1517 kPa ±.34)
(15.17 bar ±.34)
Fan
Should Be:
Running
Off
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