Pump Down | Ice-O-Matic GEM0650R, GEM1256R, GEM0956R guide

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

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

Contents

By Ice-O-Matic Pearl Ice SeriesPage Keep this manual for future reference Introduction Table Of Contents Inspect Promptly Freight Claim ProcedureVisible Loss or Damage Concealed Loss or Damage Governing LAW Warranty For the Installer GEM0650/0956R GEM1256R Bin Application Ice Machine Specifications Storage Bin LocationIce machine Water Limitations Remote Condenser ERC Dimensions Inches GRC1001 GRC1061 GCR2061Pearl Ice Number Line Sets Calculation Example Remote Condenser LocationCalculation Formula Precharged Line Set Routing Remote Condenser LocationRoof Attachment Typical Installation Final Connections Coupling Instructions Initial Connections Drains 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 Up Component Description Control Board GEM0650/0956/1256 Remote Electrical Sequence Water Operation WaterWater Level Water System Operation Refrigeration Refrigeration Schematic Low Condensing Temperature Pump Down Operation Performance Sanitizing and Cleaning Brush in direction of fins Condenser Maintenance Bearing Maintenance Bearing Maintenance Water Sensor Sensor MaintenanceBin Control Sensor Auger Auger Maintenance Symptom Possible Cause Probable Correction Service Diagnosis Symptom High pressure cut out check Control System Diagnostics Bin Controls Ice Level Sensors Water Reservoir, Bin ControlWater Reservoir Bearing and Breaker To Remove the Breaker Bearing Assembly To Remove the Auger Auger To Remove the Water Seal Water SealRemoval of the Water Seal To Replace the Water Seal Replacing the Water Seal To 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 Motor Fan Blade and Motor To Remove the Condenser Fan Motor Assembly Charging Procedure Refrigeration Service Wiring Diagram GEM0650R GEM0650R Wiring Diagram Wiring Diagram GEM0956R GEM0956R Wiring Diagram Wiring Diagram GEM1256R GEM1256R Wiring Diagram What to Do Before Calling for Service Service History