Operation

OPERATION

The A/C receiver/drier performs a filtering action to prevent foreign material in the refrigerant from contaminating the A/C expansion valve. Refrigerant enters the A/C receiver/drier as a high-pressure, low temperature liquid. Desiccant inside the A/C receiver/drier absorbs any moisture which may have entered and become trapped within the refrigerant system. In addition, during periods of high demand operation of the A/C system, the A/C receiver/drier acts as a reservoir to store surplus refrigerant.

The desiccant and filter assembly within the receiver/drier bottle must be replaced if the refrigerant system has been contaminated, left open to the atmosphere for an indeterminable period of time or if the A/C compressor has failed Removal-Desiccant and Filter Assembly.

NOTE: Replacement of the O-ring seal is required anytime the desiccant and filter assembly is removed from the A/C condenser. Failure to replace the rubber O-ring seal could result in a refrigerant system leak.

The desiccant and filter assembly has no serviceable parts except for the O-ring seal. The O-ring seal used on the connection is made from a special type of rubber not affected by R-134a refrigerant. The O-ring seal must be replaced whenever the desiccant and filter assembly is removed from the A/C condenser.

The A/C receiver/drier is integral the A/C condenser and cannot be repaired. If the receiver/drier bottle is if found to be leaking or damaged the A/C condenser must be replaced A/C Condenser - Removal.