Service Manual

146 Part Number 8014793 6/18
Refrigeration Components
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.
CHECK PROCEDURE
1. Set ICE/OFF/CLEAN switch to OFF, (Manual
reset HPCO reset if tripped).
2. Connect manifold gauge set.
3. Hook voltmeter in parallel across the HPCO,
leaving wires attached.
4. On water-cooled models, close the water service
valve to the water condenser inlet. On self-
contained air-cooled and remote models,
disconnect the fan motor.
Specifications
Cut-Out Cut-In
450 psig ±10
(3103 kPa ±69 31 bar ±.69)
Automatic Reset
(Must be below 300 psig (2068 kPa 20.68 bar) to reset.)
ST3000 R410A Refrigerant Only
600 psig ±10
(3147 kPa ±69)
450 psig ±10
(3103 kPa ±69)