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Xringer · 01-08-10, 12:25 PM

IIRC, that chart indicates a very long vacuum cycle if it's pretty cold.. Like it's going to be for a good while..

I do have a rather large loop in the bottom of the of the line-set. (right behind the unit).
Plus, I know there are a lot of little loops inside the indoor-unit.

Those two low parts of the loops could be holding a lot of POE lube..

Maybe I could hook up like I was going to nitrogen pressure test and
then crack the nut on the small line to bleed out the nitrogen and any oil that might be pushed along..

I've found a lot of info about converting from R22 to R410A,
Flushing Techniques For R-22 to R-410A Conversions
but nothing much about just cleaning out an R410A line set..

01-08-10, 12:25 PM	#129
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	IIRC, that chart indicates a very long vacuum cycle if it's pretty cold.. Like it's going to be for a good while.. I do have a rather large loop in the bottom of the of the line-set. (right behind the unit). Plus, I know there are a lot of little loops inside the indoor-unit. Those two low parts of the loops could be holding a lot of POE lube.. Maybe I could hook up like I was going to nitrogen pressure test and then crack the nut on the small line to bleed out the nitrogen and any oil that might be pushed along.. I've found a lot of info about converting from R22 to R410A, Flushing Techniques For R-22 to R-410A Conversions but nothing much about just cleaning out an R410A line set..