Posted by Texasmark1 on August 05, 2020 at 07:45:48 from (172.243.92.145):
In Reply to: Re: AC Followup posted by Hobo,NC on August 04, 2020 at 05:29:27:
Yeah. I burnished the copper line nice and bright, positioned the bulb at 4 O'clock, to keep it out of the ref oil on the bottom, or vapor on the top, wrapped it and the return line in copper tape, then wrapped several sheets of 5ish mil copper stock around that, then took some wire and and wrapped around that with a couple of wire twists to keep it all tight, then took some thermal sealing tape and covered the whole shebang with several layers of that.....considering the OEM came with a steel, not copper S clip and nothing else but insulation, I think I am doing a better job of sensing. Additionally this valve has an equalizing line that attaches to the line to aid in proper sensing and reacting.
On loosening connections, yeah I never did either, and never realized that I could have had leaks there, but in looking for leaks on this system with a new designed for the purpose vacuum pump (not my old freezer compressor, or old GM AC compressor rigged up for a vacuum pump) from not getting a hard vacuum I realized that the hose to manifold connections would back off in my twisting and turning the manifold in searching for leaks and all that. So I bought a new set of gauges and the new "sealed top" 134a can access valve so I will be up to date with new equipment the next time I have a problem. Now that I have the new type it's easy to see why the original 134 piercing adapter workings were really strange.
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