Friedrich WS10B10 service manual Rotary Compressor Special Troubleshooting and Service

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SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNOUT

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or installation.

Failure to do so may result in personal injury, or death.

WARNING

HIGH PRESSURE HAZARD

Sealed Refrigeration System contains refrigerant and oil under high pressure.

Proper safety procedures must be followed, and proper protective clothing must be worn when working with refrigerants.

Failure to follow these procedures could result in serious injury or death.

WARNING

EXPLOSION HAZARD

The use of nitrogen requires a pressure regulator. Follow all safety procedures and wear protective safety clothing etc.

Failure to follow proper safety procedures result in serious injury or death.

1.Recover all refrigerant and oil from the system.

2.Remove compressor, capillary tube and filter drier from the system.

3.Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent. Use approved flushing agent to remove all contamination from system. Inspect suction and discharge line for carbon deposits. Remove and clean if necessary. Ensure all acid is neutralized.

4.Reassemble the system, including new drier strainer and capillary tube.

5.Proceed with step 8-10 on previous page.

ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING AND SERVICE

Basically, troubleshooting and servicing rotary compres- sors is the same as on the reciprocating compressor with only one main exception:

NEVER, under any circumstances, liquid charge a rotary compressor through the LOW side. Doing so would cause permanent damage to the new compressor.

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Contents Thru-the-wall Table Of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards IntroductionFriedrich wallmaster Model Number Code Performance Data Sleeve / Chassis DimensionsPlug/Outlet/Circuit Rating Electrical DataElectric Shock Hazard Fire HazardElectronic Control Operation To adjust fan speedTo activate Smart FanWS cool-only models To activate Smart FanWY/WE heat-cool modelsTo Activate Money Saver WY/WE models To set the timerChecking Room Temperature To start unit To set mode of operationTo adjust temperature Testing the Electronic Control Error Code ModeElectronic Control Panel Automatic component protectionError Codes Listing for WE/WY Models Error Codes Listing for WS ModelsReboot the Control Panel E7 Motor Operation E9 Heat Pump FailureCoil Sensors Components TestingFAN Motor FAN Motor TestHeating Element CapacitorsDrain PAN Valve Capacitor Check with Capacitor AnalyzerRefrigeration System Sequence of Operation Refrigeration system under high pressure 410A Sealed System Repair ConsiderationsEquipment Required 410A Sealed Refrigeration System RepairsEquipment Must be Capable Risk of Electric ShockFreeze Hazard Method Of Charging / RepairsBurn Hazard Overcharged Refrigerant Systems Undercharged Refrigerant SystemsRestricted Refrigerant System Metering Device Hermetic Components CheckCheck Valve Capillary Tube SystemsPOSITION, 4 Port Reversing Valve Reversing Valve DESCRIPTION/OPERATIONChecking the Reversing Valve Testing the CoilExplosion Hazard Procedure For Changing Reversing ValveTouch Test in Heating/Cooling Cycle Compressor Checks Ground Test Single Phase Resistance TestHigh Temperatures Compressor ReplacementRecommended procedure for compressor replacement Rotary Compressor Special Troubleshooting and Service Routine Maintenance Clearances Sleeve / DrainFront Cover Date Model Serial Room AIR Conditioner Unit Performance Test Data SheetGeneral Troubleshooting Tips General Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Possible Cause Possible Solution Problem Possible Cause Possible Action HEAT/COOL only Room AIR Conditioners Troubleshooting Tips Heat Pump Troubleshooting Problem Troubleshooting Chart CoolingTroubleshooting Chart Heating Heat Pump YES Electrical Troubleshooting Chart Heat PumpSystem Cools When Heating is Desired Malfunction of Valve Normal Function of ValvePage Page Page Installation Accessories Description QTY Mounting Hardware ProvidedWall Preparation MECHANICALCUT/SEVER Hazardhazard Installation RequirementsMECHANICALCUT/SEVER Hazard Installation Instructions for Baffle Adapter KIT BAKCUT/SEVER WallMaster Thru-the-WallMechanical Hazard MECHANICALCUT/SEVER Hazard Installation InstructionsAssembly & Installation Instructions Installation Instructions Subbase for WS, WE & WY Models Installation Instructions Architectural Grille Model AG MECHANICALCUT/SEVER Hazard WALLMASTER≤ THRU-THE-WALL AIR Conditioners Limited Warranty Technical Support Contact Information Page Page Friedrich AIR Conditioning CO