Emerson SZO22, SZV22 manual Platform Symptoms Diagnosis, Platform troubleshooting guidelines

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Single-Compressor Module

Maintenance

5.2Platform Symptoms Diagnosis

Use the following guidelines to troubleshoot operating problems.

Table 6

Platform troubleshooting guidelines

Problem

 

Recommended Actions

 

 

• Low inlet pressure

 

 

• Insufficient gas supply

Low Gas

 

• High temperature

Flow

 

• Bypass valve open

 

 

• Low Compressor speed

 

 

• Restricted inlet screen

 

 

• Saturated or dirty secondstage oil separator

High Oil

 

• High oil level

 

• Restricted scavenge orifice

Carryover

 

 

• Insufficient back pressure

 

 

 

 

• Oil dilution

 

 

• Determine drive status.

Compressors

• Is inhibit circuit closed?

Won’t Run

 

• Is run signal present?

 

 

• Does the VFD indicate a fault code?

Incorrect

 

• Low inlet pressure

 

• High discharge pressure

Compressor

 

• High temperature, fan, low oil, oil cooler

Speed

 

 

 

• Problem with speed control sensor and related components

 

 

• Low oil level

High

 

• Restricted oil filter

 

• Blocked oil cooler air flow

Temperature

• Oil cooler fan not operating

 

 

 

 

• Operation conditions outside of Compressor Module specifications

23

2008SSD-34 (5/11)

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Contents Copeland Scroll Compressor Module Page Table of Contents Table of Contents Figures Compressor Module Nomenclature Important Safety Information Safety Symbols Used in This Manual Safety Alert SymbolIntroduction Compressor ModuleCompressor Package CompressorGeneral Installation Guidelines Installation GuidelinesInlet and Discharge Pressures Required Component-Inlet Gas ScrubberAmbient Temperature Range Compressor Module Dimensions, in. mm Installation Clearance and DimensionsProcess and Instrumentation Diagrams P&IDs SwitchStatus SwitchesElectrical Controls General ConsiderationsBrushless DC Fan Oil Cooler Fan ControlSingle-Compressor Module Installation Motor Control Compressor Power data based on 480VAC Variable Speed Typical Compressor Module power supply requirementsElectrical Requirements Code DescriptionControl Circuit Terminations Control Wiring Terminations WiringVariable Frequency Drive VFD Terminations Pre-Startup ChecklistInitial Startup Compressor Module During Initial OPERATION, Perform These Checks Post-Startup ChecklistMaintenance summary Routine MaintenanceMaintenance Maintenance Tools Maintenance ToolsSymptoms Oil ServiceHigh Oil Carryover Possible Cause Single-Compressor Module Maintenance Servicing the Scavenge Line Orifice Cleaning the Inlet ScreenTroubleshooting Troubleshooting GuideVFD fault codes and descriptions Changing the Second-Stage Separator ElementPlatform troubleshooting guidelines Platform Symptoms DiagnosisSpecifications Compressor Module Specifications Supplier 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 EmersonClimate.com