Escort L4-122 2.0L SOHC (1997)
Accumulator HVAC: Description and Operation
The suction accumulator/drier is mounted on the right side of the bulkhead. The inlet tube of the suction accumulator/drier attaches directly to the
evaporator core outlet tube.
Refrigerant enters the suction accumulator/drier and the heavier, oil-laden refrigerant falls to the bottom of the suction accumulator/drier. A small oil
bleed hole is located in the side of the outlet tube near the bottom of the suction accumulator/drier. The bleed hole is covered with a filter and allows a
small amount of the heavier liquid refrigerant and oil mixture to enter the A/C manifold and tube at a controlled rate. When the heavier liquid refrigerant
and oil mixture enters the A/C manifold and tube, 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 top of the suction accumulator/drier 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.
CAUTION: Replace the suction accumulator/drier when:
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It is restricted or perforated.
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The refrigerant system has been left open for more than four hours or completely discharged for 24 hours or more.
