Valeooscope - Air Conditioning System Thermal comfort loop

11.4 The receiver drier

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

Compressor

Receiver drier

Expansion valve

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

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.

A/C system

Liquid refrigerant Oil

Liquid refrigerant

Oil

Gaseous refrigerant

Contaminants

49