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11.4 The receiver drier
Roles:
1. To retain moisture and contaminants from the
system (during the receiver drier’s life time)
2. To finalise and secure the condensation of the fluid
3. To compensate for the variations of fluid volume
4. To ensure oil return to the compressor
The receiver drier protects the components of the
system; it is located on the high pressure
side of the circuit between the condenser outlet and
the expansion valve inlet.
Evaporator
Condenser
Expansion valve
Compressor
Receiver drier
Liquid
refrigerant
Oil
Liquid
refrigerant
Oil
Gaseous
refrigerant
Contaminants
A/C system
Recommendations for replacement:
The receiver drier must be replaced every
3 years.
Regularly replacing the filter prevents
serious failures and the costly replacement
of the other components in the air conditio-
ning system.
The receiver drier must be replaced whene-
ver the circuit is opened.
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Receiver drier