Receiver Dryer: Description and Operation

The suction accumulator/drier is mounted on the RH side of the engine compartment near the bulkhead. The inlet tube of the suction accumulator/drier attaches directly to the A/C evaporator core outlet tube.

Refrigerant enters the suction accumulator/drier through the inlet tube, and the heavier, oil-laden refrigerant falls to the bottom of the canister. A small bleed hole is located in the side of the outlet tube near the bottom of the canister. The bleed hole is covered with a filter and allows a small amount of the heavier liquid refrigerant and oil mixture to enter the evaporator to compressor suction line at a controlled rate. When the heavier liquid refrigerant and oil mixture enters the evaporator to compressor suction line. it has a second opportunity to vaporize and circulate through the A/C compressor without causing damage.

A desiccant bag is mounted inside the suction accumulator/drier to absorb any moisture in the refrigerant system.

A fitting located on the side of the canister is used to attach the A/C cycling switch. A Schrader-type valve stem prevents refrigerant loss when the A/C cycling switch is removed.