Draining refrigerant: Information

Fig 1: Identifying Recycling Unit Attached To Service Valve

Courtesy of VOLVO CARS OF NORTH AMERICA.

NOTE:

The ambient temperature must be above 20°C when draining the system

When draining refrigerant, the recycling unit can be attached to the service valve for both the high pressure side (HP) and the low pressure side (LP) at the same time. This is the quickest method.

The engine must be switched off
Check the amount of oil (if any) that has run out when draining the refrigerant.

NOTE:

The recycling unit must be equipped with an oil separator. The oil separator must be of a type that allows the amount of oil in the refrigerant to be measured.

NOTE:

Always disconnect the battery lead when working on the climate control system. Disconnect the battery lead. See Battery, replacing .

Other information:

For vacuum pumping, see Vacuum pumping
For visual and physical checks, see Air conditioning (A/C) compressor, visual and physical check
To fill with refrigerant, see Filling with refrigerant
To fill with fluorescent tracing agent, see Filling with fluorescent tracing agent with the refrigerant
To leak trace using an electronic leak tracer, see Leak tracing, electronic leak tracer
To leak trace using fluorescent tracing agent and an UV flashlight, see Leak tracing, fluorescent tracing agent / UV lamp