Subject	Great question
Posted by	megaDan on March 27, 2021 at 2:30 PM
	This message has been viewed 145 times.
In Reply To	Re: I did an R134A conversion posted by rdwoebke on March 26, 2021 at 09:37 AM
Message	I meant to add the disclaimer to my post that it's only been a year since I completed the conversion, so I can't comment regarding longevity yet. Regarding vacuum, you won't get MORE vacuum necessarily (technically yes, but nothing you'll be able to discern from a standard manifold gage) by running the pump longer, you just want to give the system enough time to boil off residual moisture. If the needed doesn't peg to -30mmhg within a few minutes you've likely got a leak. After pressure testing I pumped mine down for a few hours, let it sit overnight, verified again; and then filled the system with R134a. I've read to pump it for as little as 30 minutes, and as much as 24 hours. I'm NOT an expert but consider myself a very competent DIYer. So take my comments at face value.
Follow Ups	R12 Air Conditioning Repair advice request - rdwoebke 21:03:12 03/21/21 Re: R12 Air Conditioning Repair advice request - rdwoebke 21:08:53 03/21/21 The "white smoke" from the vents was likely just water vapor - Polishzx 01:52:32 03/22/21 Do you have details for your R12 -----> R134a convert? (n/m) - ZUL8TR 05:51:16 03/22/21 No conversion here, 94 so r134a stock. - Polishzx 13:11:43 03/22/21 I did an R134A conversion - megaDan 10:20:31 03/25/21 Re: I did an R134A conversion - rdwoebke 09:37:30 03/26/21 Great question - megaDan 14:30:00 03/27/21 Re: The "white smoke" from the vents was likely just water vapor - rdwoebke 07:33:20 03/22/21 Since you verified no leaks w/ pump where did the R12 go>> - ZUL8TR 06:04:57 03/22/21 Re: Since you verified no leaks w/ pump where did the R12 go>> - rdwoebke 07:35:04 03/22/21
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