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#1
06-16-2011, 04:32 PM
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How does one know if their POA has been upgraded? I ask because my car supposedly had been changed from 12 to 134. Leaks miserably. It has the new hose for 134 fitting. What does the POA for an R 12 system look like vs a POA for R 134? The POA on my car has a screw adjustment on it that, with a 1/4 turn I noticed, will change when the compressor kicks on/off.
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#2
06-17-2011, 07:17 AM
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Upgraded and calibrated are two different things, the POA is the same when calibrated, but to answer your question, The 'kick off' psi is higher for a 134 system. I guess it could be done with a set of gauges attached, but believe the internal seals need to be replaced. Best to send it off, and cheaper in the long run that way.
Your system probably leaks after changing to 134 because 134 uses a different oil, and that oil probably ate all the seals up. The o-rings/seals are green for 134. .
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