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Evacuated the A/C to fix a leak and then refilled it, do I had to replace the dryer??

HamadUP on Mon August 03, 2009 4:26 AM User is offline

Year: 1971
Make: Chevy
Model: Corvette
Engine Size: 454
Refrigerant Type: R134a
Ambient Temp: 90
Pressure Low: 60
Pressure High: 230
Country of Origin: Qatar

I had a small leak in my newly built A/C, I had to evacuate and then replace some O-rings and then pull vacuum again and re-fill with fresh R134a, the system was exposed to the atmosphere for less than 30 min. , do I have to replace the dryer in that case? .. what's the maximum period of time the dryer would be let exposed to atmosphere and still be usable?

The A/C now is working fine, but I'm alittle worried about re-using the same dryer again!

Cussboy on Mon August 03, 2009 8:56 AM User is offline

Don't worry. It's not like moist air was being pumped through the accumulator.

I replaced the manifold hose assembly on my dual-air R134a '94 Suburban in January, and didn't replace the accumulator. Mine was "open" 1/2 to one hour.

Edited: Mon August 03, 2009 at 8:58 AM by Cussboy

HamadUP on Mon August 03, 2009 11:16 AM User is offline

But mine is the old TXV and dryer system, not the accumulator with the orifice one. Is that making any difference?

Cussboy on Mon August 03, 2009 2:36 PM User is offline

No. You'll be fine. You say it's working fine currently, don't mess with it.

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