Carrier 52S manual Removing the Compressor Ð Follow the steps, Disconnect all power to unit

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52S

SERIES

REMOVING THE COMPRESSOR Ð Follow the steps

below to remove the compressor:

1.Disconnect all power to unit.

2.Remove unit from wall sleeve as detailed in the GENERAL DISASSEMBLY section. The unit weighs up to 150 pounds. Seek assistance or use a lifting device when removing unit from wall sleeve.

3.If the unit is a heat pump: Disconnect the wire plug on the reversing valve solenoid and carefully remove the outdoor thermostat capillary from the outdoor coil.

4.Attach the piercing valve to the suction side pro- cess tube below the crimps. Attach Carrier TOTALTEST kit (Part No. TT1-001), to the pierc- ing valve to verify acidity of the system. After verifying the system acidity, attach the Totalclaim System to the access port to remove and clean the refrigerant.

5.When all the refrigerant has been recovered, re- move the terminal cover from the compressor with a nut driver. Disconnect the 3 wires from the compressor and label the location of each. Once the wires are labeled, replace the terminal cover to protect the compressor terminals.

6.Remove the air system assembly by following the procedure detailed in the SEASONAL CLEANING section under Accessing the Indoor and Out- door Coils.

7.Remove the piercing valve and cut the crimped por- tion of both process tubes off with a small tubing cutter. Braze a Parker access valve on each process tube. Using a torch, disconnect the suction and discharge tubes from the compressor connections.

8.Remove the compressor mounting bolts, and remove the compressor.

The compressor may still be hot from the brazing process.

9.For Cooling Only units and Heat/Cool Units: Remove the strainer and capillary tubes from the system. A Cooling Only or Heat/Cool unit will have one strainer located in the liquid line between the outdoor coil and the capillary tube. The strainer may be an external bulb type or a tube inserted type. The tube inserted type must be cut out with a tub- ing cutter. Remove and save the section of liquid line tube that was connected to the capillary tube. Remove and discard the strainer. See Figures 37 and 38.

FIGURE 37 Ð STRAINER AND LIQUID TUBE

52mm

CUT HERE

STRAINER

OUTDOOR COIL

CONNECTOR

TUBE

FIGURE 38 Ð TUBE INSERTED STRAINER

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Contents Service Technician Guide ContentsIntroduction Summary of DANGERS, WARNINGS, and CautionsModel Number Nomenclature General Disassembly To Disconnect Power for CORD- Connected UnitTo Open the Control BOX To Remove the Unit from the Wall SleeveDuct Extension Screws To Access INDOOR-AIR Section Components Removing the AIR BaffleTo Remove the AIR Discharge Grille To Remove the TOP Cover Ð Remove the screwTo Remove the Gusset To Access OUTDOOR-AIR Section ComponentsTo Remove the Discharge Deck Removing Stator General Cleaning Cleaning and SafetyComponent Cleaning Schedule Consider the following safety issues before beginningMonthly Cleaning Cleaning the Indoor AIR Filter Ð RemoveReplacing the Indoor AIR Filter Ð Access Tools NeededChassis Cleaning the Vent AIR FilterReplacing the Vent AIR Filter Disconnect ALL Power to Unit Seasonal CleaningAccessing the Indoor and Outdoor Cleaning the Indoor and Outdoor Coils Accessing the Indoor FAN and IndoorCoils section Section Components onCleaning the Heater Assembly Ð Once Cleaning the Indoor FAN and FANDisconnect ALL Power to the Unit Compressor Rotary Compressor Components Compressor Troubleshooting Basic Hermetic Compressor Electrical MeasurementsBasic Compressor Troubleshooting Guide Compressor Replacement SHORTED/OPEN Windings TestDisconnect all power to unit Removing the Compressor Ð Follow the stepsInstalled Filter Drier Refrigerant Charging Ð Every mechanicalHeater Removal HeatersCommon Causes Heater Failure Removing Heater Screws Operating Controls Typical 52S Unit Operating ControlsDescription of Switch Settings NON-USER Adjustable SwitchesHigh Heat or High Cool Ð Push button Outside or Vent AIR Ð Push the FAN onlySequence of Operation HEAT/COOL Units FigureCooling only Units Figure Heat Pump Units FigureIndoor Thermostat Heat Pump Units Component Operation and TroubleshootingTools Needed Indoor Thermostat IT CONTACTS, ALL 52SQ AA and CP Models Outdoor Frost Thermostat Heat Pump UnitsLocked OUT Capacitor TestElectrical Components Removal and Replacement Outdoor Frost Thermostat ScrewsComponent Locations Open Control BOX Basic FAN Motor Electrical Tests FAN Motor TroubleshootingFAN Motor FAN Motor Troubleshooting Chart Typical 208/230 Volt Motors Typical 265 Volt MotorsFAN Motor Replacement RemovalField Temperature Charts 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Page 52S Series Wiring Schematics Wiring Schematic 52SC Ð 208/230 V and 265 V AA and CP UnitsWiring Schematic 52SE Ð 208/230 V and 265 V AA and CP Units Wiring Schematic 52SE Ð 208/230 V and 265 V RC Units Wiring Schematic 52SQ Ð 208/230 V and 265 V AA and CP Units Wiring Schematic 52SQ Ð 208/230 V and 265 V RC Units Most Frequent Ptac Service Questions