Vacuum pumping
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Check and if necessary fill with new compressor oil as described in Oil air conditioning (A/C) system, filling before vacuum pumping the vehicle air conditioning unit.
Let the vacuum pumping continue for at least 50 minutes.