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- Mon Apr 06, 2020 7:14 am
- Forum: Automotive Air Conditioning Forum
- Topic: Must I "zero out" manifold gauge set before checking pressure?
- Replies: 1
- Views: 3030
Must I "zero out" manifold gauge set before checking pressure?
I have a manifold gauge set that I used to charge an empty system by weight to factory spec with a refrigerant scale. The manifold gauge set still has some refrigerant/gas in it as I just closed the valves off and hung it up when I was done. So, do I need to vent/empty the manifold gauge set before ...