A/C - Replacement of Receiver Dryers: R12/R134a

Group 64
Heating and
Air Conditioning

Bulletin Number
64 09 93

Woodcliff Lake, NJ
August 1997
Product Engineering

This Service Information bulletin supersedes SI 64 09 93 dated October 1993, which should be removed and discarded from your SI binder.

SUBJECT:
Replacement of Receiver Dryers: R-12 / R-134a

MODEL:
All

Situation:
Long term tests have indicated that it is not necessary to replace a receiver dryer provided the receiver dryer is installed in a correctly functioning, sealed system.

Correction:
Replacement hints for the receiver dryer are given in the repair manual 64 53.., "Notes on Replacing Dryer Flask".

The receiver dryer must be replaced as part of an air conditioning repair whenever:

- there is dirt in the refrigerant circuit (e.g. compressor has seized),

- the system is leaking and there is no more refrigerant in the system,

- the refrigerant circuit was opened for longer than 24 hours during a repair.