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!
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
But mine is the old TXV and dryer system, not the accumulator with the orifice one. Is that making any difference?
No. You'll be fine. You say it's working fine currently, don't mess with it.
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