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Re: Air contamination in freon
Posted to HVAC Forum on 4/23/2019 8 Replies

With the advent of AC recovery machines, I too have seen this time and again for decades. It is obvious that on the downward stroke of the piston air is ever so slightly be drawn in from the low side (hose/seals, evaporator/seals, etc. or via the compressor it... Login to read more.

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