Quote:
Originally Posted by dude99
So would pulling a vacuum on the system be completely pointless then or would it still be best practice?
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Absolutely not, you should use that pump. Pull a vacuum with it, fill with HC refrigerant then repeat (vacuum, refill). You dillute down whatever was left in the system the first time around with the second vac and refill. You can even do a 3rd cycle if you want to as long as the only thing going in is HC. The whole "your pump must pull and and hold 29.999 inch vac" is total BS. HC refrigerants are not susceptible to the same moisture issues as R12 or R134.
07-06-2015, 02:25 PM
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