Thread: A/C purge time
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Old 06-21-2001, 07:01 AM
Posts: n/a
If he was using a good wet vane vacuum pump, 1/2 hour MAY be ADEQUATE. The problem is that ANY moisture left in the system will combine with the refrigerant to make an acid. The acid of course will cause serious problems eventually.
R134 is worse about this than R12.

If you can pump it down for 24 hours it's best.

Good luck,
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