I've done a fair bit of my own hvac work. I replaced a
couple of gas
furnaces and one split ac.
CY: yes, those are good skills to have.
I'm building a new garage with living
space above it out at my lake house. I picked up a
goodman 1 1/2 ton heat pump compressor off craig's list. It
installed as part of an attic conversion that was never
While the seller was moving out of the house the low side
damaged and it lost charge. Fast according to the seller.
The guy didn't know enough to shut the valves. Instead he
off the lines. Folded the small one over and stuffed a
piece of foam
in the big one.
CY: Compressor oil absorbs moisture from the air. When you
go to reinstall, you should vacuum the system to 500
microns, and leave the vacuum pump running at least an hour.
Also, please install an ovesize filter drier, as you may
have a lot of moisture trapped.
I cut them off with a pipe cutter, closed the valves,
and blew them out with compressed air. I was worried that I
did not get all the copper filings from the hacksaw so I
valves and blew the lines out again via the third tap. (The
is used to check pressure during heat mode.) I didn't get a
air to move through it though that way so I doubt I blew out
So I'm worried that there still may be some copper filings
lines. What else can I do?
CY: Liquid and suction line filter driers comes to mind.
I'm also a little worried that it may have lost some oil
when the low
side was broken. There doesn't seem to be any easy way to
refill the oil though.
CY: That's right, there is no easy way.
I won't be installing it from a few months. I'd like to go
vaccum it down. Can I do that via the third tap?
CY: How about cap the lines, and then vac through the usual
I'll fill it with
some r22 after I vacuum it.
CY: Well, enough R-22 to keep air and moisture out. 30 PSI
or so should help.