Ice-O-Matic GEM0650R, GEM1256R, GEM0956R installation manual Pump Down

Page 29

GEM0650/0956/1256 Remote

Operation: Refrigeration

Pump Down

During the pump down cycle (usually initiated by the circuit board de-energizing the liquid line valve) the discharge gases flow through their normal path to the remote condenser, through the head pressure control and into the receiver. At this point the refrigerant flow is stopped by the closed liquid line valve.

This action forces the refrigerant into the receiver and keeps it out of the compressor. The pump down continues until the pump down control opens turning the compressor off.

Refrigeration Schematic

Remote Condenser

	Discharge	Liquid Line
	Line	Liquid Line
	Line

Liquid Line Valve (Closed)

Head Pressure

Control Valve

Receiver		Compressor

Page 23

Image 29

Contents By Ice-O-Matic Pearl Ice SeriesPage Keep this manual for future reference IntroductionTable Of Contents Inspect Promptly Freight Claim ProcedureVisible Loss or Damage Concealed Loss or DamageGoverning LAW WarrantyFor the Installer GEM0650/0956R GEM1256R Bin Application Ice Machine SpecificationsStorage Bin LocationIce machine Water LimitationsRemote Condenser ERC Dimensions Inches GRC1001 GRC1061 GCR2061Pearl Ice Number Line SetsCalculation Example Remote Condenser LocationCalculation Formula Precharged Line Set Routing Remote Condenser LocationRoof Attachment Typical Installation Final Connections Coupling Instructions Initial ConnectionsDrains Ice Machine For the PlumberWater Inlet For the Electrician Completed Installation Final Check List Start Up There are no adjustments to make, so replace the panelsPre-Start Inspection Start UpComponent Description Control Board GEM0650/0956/1256 Remote Electrical Sequence Water Operation WaterWater Level Water SystemOperation Refrigeration Refrigeration SchematicLow Condensing Temperature Pump Down Operation Performance Sanitizing and Cleaning Brush in direction of fins Condenser MaintenanceBearing Maintenance Bearing MaintenanceWater Sensor Sensor MaintenanceBin Control Sensor Auger Auger MaintenanceSymptom Possible Cause Probable Correction Service DiagnosisSymptom High pressure cut out check Control System DiagnosticsBin Controls Ice Level Sensors Water Reservoir, Bin ControlWater Reservoir Bearing and Breaker To Remove the Breaker Bearing AssemblyTo Remove the Auger AugerTo Remove the Water Seal Water SealRemoval of the Water Seal To Replace the Water Seal Replacing the Water SealTo Reassemble the Evaporator and Auger EvaporatorTo Replace the Evaporator Gear Motor To Remove and Repair the Gear Motor AssemblyTo Check the Gear Motor To Inspect the Gear MotorFan Blade and Motor To Remove the Condenser Fan Motor AssemblyCharging Procedure Refrigeration ServiceWiring Diagram GEM0650R GEM0650R Wiring DiagramWiring Diagram GEM0956R GEM0956R Wiring DiagramWiring Diagram GEM1256R GEM1256R Wiring DiagramWhat to Do Before Calling for Service Service History