High Pressure Cutout (Hpco) Control - Manitowoc QuietQube Series Technician's Handbook

HIGH PRESSURE CUTOUT (HPCO) CONTROL

FUNCTION
Stops the ice machine if subjected to excessive high-side
pressure. The HPCO control is normally closed, and opens
on a rise in discharge pressure.
SPECIFICATIONS
R404A
R410A
Opening the HPCO will initiate the 5 minute compressor
time delay. Repeated HPCO opening/closing or failure to
close will result in an E01 long freeze error.
CHECK PROCEDURE
1. Connect manifold gauges to ice machine.
2. Hook voltmeter in parallel across the fan cycle control,
leaving wires attached.
3. Refer to chart below.
HPCO Setpoint
Below Cut-Out
Above Cut-In
Part Number: 000015431 Rev01 5/19
Cut-Out
450 psig ±7
(3102 kPa ±48
31 bar ±0.48)
600 psig ±10
(3147 kPa ±69)
Automatic Reset
Reading Should Be
0 Volts
Line Voltage
Specifications
300 psig ±10
(2068 kPa ±69
20.68 bar ±0.69)
450 psig ±10
(3103 kPa ±69)
HPCO Contact Position
Cut-In
Closed
Open
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