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The cylinder should be evacuated
The cylinder may be too heavy too lift
Goggles, and gloves.
This occurs because the refrigerant must be capable of releasing excess heat easily. It can do this by boiling and having it in steam.
200.4 Psig
Refrigerant should be removed from the condenser outlet when:
It is essential to take measures to help release refrigerant from the compressor oil during refrigerant recovery when the refrigerant release valve is stuck closed. The release valve should be maintained at all times.
Most modern vehicles us R-134a refrigerant. If it's used in my '96 Caravan, should be no different in an '01 model. **There should also be a sticker underneath the hood letting you know the refrigerant specification**
Most vehicles made before 1994 use R-12 refrigerant.
R-134 should be the refrigerant as R12 was banned in 1996.
your should be able to call your local auto parts store. I know the Four Seasons company adds a section to their catalog with these specs.