Replacing the accumulator / filter drier is an essential part of doing the job right.
The accumulator / filter drier acts as a filterby removing moisture and contaminates from the air conditioning system. Such contaminates cannot be removed by flushing, therefore replacing the accumulator / filter drier is essential.
The absorption of moisture in the systemis done through the use of a desiccant bag. A leaking or “open” system can cause the bag to become saturated within a few hours after being exposed to the atmosphere making the accumulator / filter drier ineffective.
Replacement of the accumulator / filter drier is requiredto validate compressor warranty and must be replaced anytime the system is serviced.