Compressor HVAC: Description and Operation
COMPRESSOR-A/CDESCRIPTION
The A/C compressor (1) used on this vehicle can be one of two models, depending upon the transaxle in the vehicle. Vehicles with a manual transaxle use the Denso 10S15 reciprocating swash plate-type A/C compressor, while vehicles with an automatic transaxle use the Denso 10S17 A/C compressor. These A/C compressors use an aluminum swash plate, teflon coated pistons and aluminum sleeveless cylinder walls and have an A/C high pressure switch located on the back cover of the compressor. The A/C compressor is secured with four bolts (2) to the lower front strut-to engine bracket (3).
A label identifying the use of R-134a refrigerant is located on the A/C compressor.
OPERATION
The A/C compressor is driven by the engine through an electric clutch, drive pulley and belt arrangement. The A/C compressor is lubricated by refrigerant oil that is circulated throughout the refrigerant system with the refrigerant.
The A/C compressor draws in low-pressure refrigerant vapor from the A/C evaporator through its suction port. It then compresses the refrigerant into a high-pressure, high-temperature refrigerant vapor, which is then pumped to the A/C condenser through the compressor discharge port.
The A/C compressor cannot be repaired and, if faulty or damaged, it must be replaced. The compressor clutch, pulley and bearing assembly, and clutch field coil are available for service. If an internal failure of the A/C compressor has occurred, the A/C accumulator must also be replaced.