Taurus V6-182 3.0L FF (1995)
Accumulator HVAC: Description and Operation
Accumulator/Drier
CAUTION: Replacement of the suction accumulator/drier is necessary any time a major component of the refrigerant system is replaced. A major
component includes A/C condenser core, A/C compressor, A/C evaporator core, or a refrigerant hose/line. An A/C evaporator core orifice or O-ring seal
is not considered a major component but the A/C evaporator core orifice should be replaced whenever the A/C compressor is replaced for lack of
performance.
The suction accumulator/drier is mounted to the engine side of the dash panel to the right of the vehicle centerline. The inlet tube of the suction
accumulator/drier attaches directly to the A/C evaporator core outlet tube and the outlet tube attaches to the A/C manifold and tube.
Upon entering the inlet of the suction accumulator/drier, heavier oil-laden refrigerant contacts an internally mounted dome, which serves as an umbrella,
and drips down onto the bottom of the canister. A small diameter oil bleed hole, in the bottom of the vapor return tube, allows the accumulated heavier
liquid refrigerant and oil mixture to re-enter the compressor suction line at a controlled rate. As the heavier liquid refrigerant and oil mixture passes
through the small diameter liquid bleed hole, it has a second opportunity to vaporize and recirculate through the A/C compressor without causing damage
due to slugging.
A desiccant bag is mounted inside the canister to absorb any moisture which may be in the refrigerant system. A fine mesh screened filter fits tightly
around the bottom of the vapor return tube to filter out refrigerant system contaminant particles.
A fitting located on the top of the suction accumulator/drier is used to attach the A/C cycling switch. A long-travel Schrader-type valve stem core is
installed in the fitting opening to prevent refrigerant loss when the A/C cycling switch is removed.
