Heatcraft Refrigeration Products 25000102 Suction Filter, CompressorMotorBurnoutCleanupProcedure

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Parallel Compressor Systems

Suction Filter

Replaceable core suction filters are supplied as standard on all units. The flanged shell holds replaceable pleated filter elements suitable for installation in the suction line of refrigeration systems. In this way any contaminants left in the system at start-up can be removed before they circulate back to the compressor. The suction filters are shipped loose for field installation. (See No. 3 of Leak Checking, Evacuation, and Start-up section in this manual).

CompressorMotorBurnoutCleanupProcedure

Another benefit of the suction filter is its use in cleanup of a system after a burnout. Standard liquid cores can be installed in the shell to aid in the cleanup of acids and other contaminants from a motor burnout.

The following procedure can be used in case of a motor burnout.

1.Determine the extent of the burnout. For mild burnout’s where contamination has not spread through the system, it may be economical to save the refrigerant. Normally it is economical to save the refrigeration charge if the system has service valves. A severe burnout exists if the oil is discolored, an acid odor is present and contamination products are found in the high and low side. With this condition, extreme caution should be exercised to avoid breathing the acid vapors and to prevent contaminated liquid from making contact with the skin.

2.Thoroughly clean and replace all system controls, such as expansion valves, solenoids, check valves, reversing valves, oil separators, suction accumulators, etc. Remove all strainers and filter-driers.

3.Install a replacement compressor and make a complete electrical check.

4.Make sure the suction line adjacent to the compressor is clean. Install a liquid line filter-drier or a replaceable cartridge designed for “cleanup” into the suction line shell.

5.Install a burnout core in the liquid line shell.

6.If the refrigerant is removed from the system, follow the evacuation procedure found on page 17 of this manual.

7.Start the compressor and put the system in operation. Record the pressure drop across the suction line filter and keep for reference.

8.Replace the suction line filter-drier blocks if the pressure drop becomes excessive.

9.Observe the system during the first 4 hours. Repeat step 8 as often as required, until no further change in pressure drop is observed.

10.After the system has been in operation for 48 hours, check the condition of the oil for Acids. If the oil test indicates an acid condition, replace the liquid and suction line filter- driers.

11.Check the system again after approximately 2 weeks of operation. If the oil is still discolored, or checks acid, replace the liquid and suction line filter-driers.

12.Cleanup is complete when the oil is clean, odor free, and is determined to be acceptable by testing for acids or other contaminants.

13.Replace the suction line filter-drier with suction line filters cores to minimize suction line pressure drop and to provide maximum compressor protection.

For more detailed information on burnout cleanup procedures and recommendations, consult the RSES Service Manual, section 91.

Sporlan Valve Company

Replaceable Suction Filter

The correct replacement suction filter element in Sporlan Valve replaceable shells is Sporlan part number RFE-48-BD. However any suitable filter that is sized to fit a 48 cu. inch vessel will substitute.

Parallel Compressor Systems Installation & Operations Manual, October 2004

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Contents Parallel Compressor Systems Table of Contents Inspection IntroductionUnit Designation Model DefinitionRigging System WarrantyLocation Of Equipment Indoor Clearances Floor & Foundation RequirementsGround Mounting Location of Equipment OutdoorRoof Mounting Unit Vibration IsolationVertical Clearance Unit AccessDecorative Fences Units in PitsElectrical Ventilation Requirements Indoor UnitsRefrigerant Piping Suction P-TrapsRefrigerant Line Support Refrigerant Line InsulationRef. Line Amount of Expansion Expansion LoopsTable of Values for L Equivalent Feet of Pipe Pressure Loss of Liquid RefrigerantsLiquid Line Rise in Feet Refrigerant 10’ 20’ 25’ 30’ 40’ 50’ 75’ 100’Line 40F 20F Weight of Refrigerants in Copper Lines During OperationSuction Line at Suction Temperature Recommended Line Sizes for R-404A/R-507 Expansion Valve Liquid Line SizeLengths 100’ 150’ 200’ 25’Capacity 40˚F 20˚F 10˚F Recommended Line Sizes for R-22Suction Line Size 10˚F Liquid Line Size Suction TemperatureNet Recommended Remote Condenser Line Sizes12 & R-134A 502 507 & R-404A TotalStart-up Leak Checking, Evacuation and Start-upEvacuation Off-Cycle Refrigerant DistributionElectric Defrost Priority I Hot Gas DefrostSystem Balancing Electronic Control SystemSystem Superheat Evaporator SuperheatCopeland Compressors 4D/6D Solid State Modules CompressorsTypical Voltage Ranges Unloader FactorsOil Charges Oil Safety SwitchApproved Copeland Lubricants Carlyle CompressorsRequired Differential Pressure for Unloader Operation Phase Voltage MonitorPart Load Performance Multipliers Sight Glass Safety Relief Devices Sight Glass & Moisture IndicatorDischarge Piping Table Henry Relief Valve Capacity RatingManual Reset Models Auto Reset ModelsLiquid Level Switch Level Switch TableOil Separators Module ReplacementOil Control Oil Level Regulators Temprite Valve AdjustmentTemprite Models AC&R Model Regulators Troubleshooting Oil SystemLiquid Filter-Driers & Suction Filters Sporlan Valve CoSuction Filter CompressorMotorBurnoutCleanupProcedureSporlan Valve Company Replaceable Suction FilterType AFD for cleanup Type DF for cleanupSuperior Valve Company Type F FilterField Adjustment Recommended Valve SettingsHot Gas Bypass Regulator Adjustment Liquid Drain Control MethodControl Settings for R-404A/R-507 Control SettingsControl Settings for R-22 Low Pressure Switch Setting for RmccWeekly General Maintenance ScheduleMonthly QuarterlyTemperature Symptom Cause Remedy CompressorDoes Not Run Unit ShortSwitch Open Symptom Cause Remedy LowHigh Suction Low SuctionSystem Reference Data Service Record
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