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178 Part Number 80-0111-9 6/11
Fan Cycle Control
QM45/Q130/Q170/Q210/Q270
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.
Specifications
Check Procedure
Disconnect electrical power to the ice machine at the
electrical service disconnect.
Verify fan motor windings are not open or grounded,
and fan spins freely.
Connect manifold gauges to ice machine.
Hook voltmeter in parallel across the fan cycle control,
leaving wires attached.
Reconnect electrical power to the ice machine and set
the ON/OFF/WASH toggle switch to ON.
Wait until water flows over the evaporator then refer to
chart below.
Model
Cut-In
(Close)
Cut-Out
(Open)
QM45 145 psig 5 110 psig 5
Q130 250 psig 5 200 psig 5
Q170 275 psig 5 225 psig 5
Q210 275 psig 5 225 psig 5
Q270 250 psig 5 200 psig 5
System
Pressure:
Reading
Should Be:
Fan Should
Be:
above cut-in 0 volts running
below cut-out line voltage off
178


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