volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Draining Refrigerant, Vacuum-Pumping, and Filling|Page 12235 > < Draining Refrigerant, Vacuum-Pumping, and Filling|Page 12233
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During vacuum pumping, it is recommended that the vacuum pump is connected to the service valves for both the high pressure (HP) and low pressure
(LP) sides.
Operate the vacuum pump for at least 50 minutes.

Note! The vacuum pump (recycling station) must have a final pressure lower than 0.1 mbar.

Vacuum test

Vacuum testing the air conditioning (A/C) system

The value of the vacuum gauge may only increase by 0.1 - 0.3 mbar during an interval of 4 minutes.

Note! The vacuum test is not a substitute for leak tracing.

Finishing

Finishing work on the service valve on the high pressure side (HP)

Draining Refrigerant, Vacuum-Pumping, and Filling|Page 12235 > < Draining Refrigerant, Vacuum-Pumping, and Filling|Page 12233