Emerson SZV44, SZO44, SZV32, SZO56 Cleaning the Inlet Screen, Servicing the Scavenge Line Orifice

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Dual-Compressor Module

Maintenance

4.6Cleaning the Inlet Screen

The 30-mesh screen in the inlet block must remain unobstructed for optimal flow rate. If the flow rate is lower than expected even when the Compressor is running properly, this screen may be obstructed.

Figure 16 Gas Inlet Block and Screen

To inspect and clean the inlet screen:

1.Turn off and isolate the Compressor from all power sources.

2.Turn off the gas supply.

3.Vent the system to 0 psig.

4.Remove the SAE plug on the side of the inlet block.

5.Remove the screen.

6.Inspect the screen and inside of the block. Clean or replace if necessary.

7.Replace SAE nut.

8.Return the Compressor Package to service.

9.Check for leaks at all fittings that have been disturbed.

4.7Servicing the Scavenge Line Orifice

The scavenge line orifice in the oil separator block must remain clear of obstruction. If this orifice is restricted, the secondstage oil separator can become saturated, increasing oil consumption.

Figure 17 Scavenge Line Orifice

Orifice

To inspect and clean the orifice:

1.Turn off and isolate the Compressor from all power sources.

2.Turn off the gas supply.

3.Vent the system to 0 psig.

4.Disconnect the tube and remove the fitting.

5.Inspect the screen. Clean or replace the fitting assembly if necessary.

6.Replace the fitting and reconnect the tube. Tighten the swage nut hand tight plus 1/4 turn.

7.Return the Compressor Package to service.

8.Check for leaks at all fittings that have been disturbed.

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2006SSD-75 R4 (10/10)

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Contents Copeland Scroll Compressor Module Page Table of Contents Appendix A Material Data Safety Sheet Figures Compressor Module Nomenclature Important Safety Information Safety Symbols Used in This Manual Safety Alert SymbolOil coolers with fans Compressor ModuleIntroduction Inlet gas scrubber for liquid removal CompressorCompressor Package General Installation Guidelines Installation GuidelinesInlet and Discharge Pressures Required Component-Inlet Gas ScrubberModule Weight Lbs. kg Ambient Temperature RangeBarg Setting Compressor Module Dimensions, in. mm Installation Clearance and DimensionsCode Description Process and Instrumentation Diagrams P&IDsSwitchStatus SwitchesElectrical Controls General ConsiderationsBrushless DC Fan Oil Cooler Fan ControlSZO44 Temperature ControlDrive Variable SpeedElectrical Requirements Typical Compressor Module power supply requirementsCompressor Power data based on 480VAC Variable Speed Control Circuit Terminations WiringPost-Startup Checklist Pre-Startup ChecklistInitial Startup Compressor Module OperationCheck for These Conditions Under Normal Operation Maintenance summary Routine MaintenanceMaintenance Maintenance Tools Maintenance ToolsOil Capacity and Type Checking the Oil LevelOil Level Guidelines Minimum Speed Oil Level Guidelines Maximum SpeedAdding Oil Adding and Removing OilTopping Off the Oil Level Draining Oil Changing the OilReplacing Oil Servicing the Scavenge Line Orifice Cleaning the Inlet ScreenChanging the Oil Filter Element Changing the Second-Stage Separator ElementTroubleshooting Troubleshooting GuideMotor Winding Resistance Motor winding resistancePlatform troubleshooting guidelines Platform Symptoms DiagnosisSpecifications Compressor Module Specifications Dual-Compressor Module Technical Support and Service Max Flow/HP as a function of discharge Configuration Suction130 140 110110 120 Flow rate150 180Supplier Appendix A - Material Data Safety SheetEmergency Number 989 Product Name and Information Components and Hazard StatementFire and Explosion Hazards Spill or Leak ProceduresReactivity Data Health Hazard DataPage Page Page Page EmersonClimate.com
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