The accumulator has a similar function to the receiver drier, but works on the gaseous side of the A/C loop. The accumulator protects the system components. It is located on the low-pressure side of the circuit between the evaporator outlet and the compressor suction port. The accumulator has different roles:

To provide compressor protection, preventing compressor failure due to liquid sluggingTo retain moisture and contaminants from the system (during the accumulator"s lifetime)To ensure oil return and ensure that only refrigerant is returning to the compressor.

Valeo Info: The accumulator is a filter drier that must be replaced approximately every 3 years, or whenever the circuit is opened.




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