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SN95 Cobras
Air conditioning experts in here please
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<blockquote data-quote="laddanator" data-source="post: 14129495" data-attributes="member: 105114"><p>I will tell you what I do. I just done this as I installed a KB and had the A/C unhooked to replace the condenser, dryer and lines. I pulled vacuum in the system over nite. I'm sure that's over kill but I always do that to make sure all moister is out. I always pull vacuum, then add oil. I use the Advance brand for years with no issues. 12 bucks a can I believe. Always fill through the low side and I would do it on a 77 plus degree sunny day (Don't mean a shitty rainy 77 day as the pressure in the air would be different) I found this to work best for filling. I usually don't go by the oz amount but pressure reading. I usually see 42 psi on the low side which means you're usually good to go. I do have a HVAC license and been doing A/C work forever but I'm not perfect and my method maybe different than other folks on here.</p></blockquote><p></p>
[QUOTE="laddanator, post: 14129495, member: 105114"] I will tell you what I do. I just done this as I installed a KB and had the A/C unhooked to replace the condenser, dryer and lines. I pulled vacuum in the system over nite. I'm sure that's over kill but I always do that to make sure all moister is out. I always pull vacuum, then add oil. I use the Advance brand for years with no issues. 12 bucks a can I believe. Always fill through the low side and I would do it on a 77 plus degree sunny day (Don't mean a shitty rainy 77 day as the pressure in the air would be different) I found this to work best for filling. I usually don't go by the oz amount but pressure reading. I usually see 42 psi on the low side which means you're usually good to go. I do have a HVAC license and been doing A/C work forever but I'm not perfect and my method maybe different than other folks on here. [/QUOTE]
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