Manitowoc

High Pressure Cutout (HPCO) ControlQM45/Q130/Q170/Q210/Q270FunctionStops the ice machine if subjected to excessive highsidepressure.The HPCO control is normally closed, and opens on arise in discharge pressure.SpecificationsCut-out: 450 psig 10Cut-in: Automatic reset(Must be below 300 psig to reset).Check Procedure1. Set ON/OFF/WASH switch to OFF.2. Connect manifold gauges.3. Hook voltmeter in parallel across the HPCO,leaving wires attached.4. On water-cooled models, close the water servicevalve to the water condenser inlet. On selfcontainedair-cooled models, disconnect the fanmotor.5. Set ON/OFF/WASH switch to ON.6. No water or air flowing through the condenser willcause the HPCO control to open because ofexcessive pressure. Watch the pressure gaugeand record the cut-out pressure.! WarningIf discha rge pressu re exceeds 46 0 p sig an d th eHPCO cont rol does not cut out, set ON/O FF/WASH switch to OFF to stop ice machineoperation.Replace the HPCO control if it:• Will not reset (below 300 psig)• Does not open at the specified cut-out pointPart Number 80-01111-9 7/10 179