Ice-O-Matic GEM0956R, GEM1256R, GEM0650R Refrigeration Service, Charging Procedure

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Torque Stem to 6-8ft.-lb. Torque Caps to 7-12ft.-lbs

GEM0650/0956/1256 RemoteRefrigeration System Service

Refrigeration Service:

General: This ice machine uses R404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system.

●When the refrigeration system is serviced, a special liquid line drier is required. It is included with replacement compressors.

●R404A is not compatible with mineral oil so these ice machines use Polyolester oil. Polyolester oil absorbs water very easily. A system opened for service must be re-sealed as soon as possible (15 minutes maximum).

●Special leak detection equipment is required to locate small refrigerant leaks. Usually a leak detector capable of detecting Halongenated refrigerant or HFC-134a will work. Check with the leak detector manufacturer if in doubt.

●Evacuate to 300 microns. ●Liquid charge the system.

Access Valves: To use the access valves:

●Remove the cap from the stem, use a 3/16 inch Allen wrench to check that the valve is CLOSED. Then remove the core cap.

●Close the valve and replace the caps when done. The valve must be closed and the caps tightened.

Charging Procedure

●Extra care must be taken when charging this remote system. No liquid refrigerant may be placed in the system at the compressor. DO NOT use the access valves at the front of the unit for weighing in the charge.

All liquid refrigerant must be weighed into the receiver through the front seated “king valve”.

Receiver		Front Seated King Valve

Service Port

Charging Cylinder

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Contents Pearl Ice Series By Ice-O-MaticPage Introduction Keep this manual for future referenceTable Of Contents Visible Loss or Damage Freight Claim ProcedureInspect Promptly Concealed Loss or DamageWarranty Governing LAWFor the Installer GEM0650/0956R GEM1256R Ice Machine Specifications Bin ApplicationIce machine LocationStorage Bin Water LimitationsPearl Ice Number ERC Dimensions Inches GRC1001 GRC1061 GCR2061Remote Condenser Line SetsCalculation Formula Remote Condenser LocationCalculation Example Roof Attachment Remote Condenser LocationPrecharged Line Set Routing Typical Installation Coupling Instructions Initial Connections Final ConnectionsWater Inlet For the PlumberDrains Ice Machine For the Electrician Completed Installation Final Check List Pre-Start Inspection There are no adjustments to make, so replace the panelsStart Up Start UpComponent Description Control Board GEM0650/0956/1256 Remote Electrical Sequence Water Level Operation WaterWater Water SystemRefrigeration Schematic Operation RefrigerationLow Condensing Temperature Pump Down Operation Performance Sanitizing and Cleaning Condenser Maintenance Brush in direction of finsBearing Maintenance Bearing MaintenanceBin Control Sensor Sensor MaintenanceWater Sensor Auger Maintenance AugerService Diagnosis Symptom Possible Cause Probable CorrectionSymptom Control System Diagnostics High pressure cut out checkWater Reservoir Water Reservoir, Bin ControlBin Controls Ice Level Sensors To Remove the Breaker Bearing Assembly Bearing and BreakerAuger To Remove the AugerRemoval of the Water Seal To Replace the Water Seal Water SealTo Remove the Water Seal Replacing the Water SealTo Replace the Evaporator EvaporatorTo Reassemble the Evaporator and Auger To Check the Gear Motor To Remove and Repair the Gear Motor AssemblyGear Motor To Inspect the Gear MotorTo Remove the Condenser Fan Motor Assembly Fan Blade and MotorRefrigeration Service Charging ProcedureGEM0650R Wiring Diagram Wiring Diagram GEM0650RGEM0956R Wiring Diagram Wiring Diagram GEM0956RGEM1256R Wiring Diagram Wiring Diagram GEM1256RService History What to Do Before Calling for Service