View Full Version : R438a Confusion

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03-09-2015, 10:25 AM
Hi All Expert,

My Apprenticeship is finished and now i am solo on tools.
Diagnosed a comp down to earth on R22.
Went back to change it and retrofit to R438a.
Done vac.
Went to charge it and Accidentally overcharged it. Because my high hose line did't dip-press the shrowder valve properly until it as to late for me to realize.
Realized, I had a clean pump down bottle so i used the discharge line to pump Gas out of the system into pump down bottle. Few times I turned the the pump down bottle up side down and sucked the oil out from and into the system.

My Question is that . Is my pump downed gas no good as i have recovered in Vapor form. And have altered the Gas composition. or At Discharge line all Gas compositions are in vapour and it is just a matter of being in vapor form and with cooling down will condense. Recovered 3 kg gas left 7 in the system. 17 kw system.
Will Appreciate all Critics and advises.


04-09-2015, 12:58 AM
Get a recovery machine on it recover all the charge ,then recharge it from that bottle in liquid then you know the ****tail so to speak is correct,if you leave it as it is no it will not operate correctly.