Micron gauge vs U tube manometer

[beenthere]

Originally posted by dan sw fl

Originally posted by heetseeker
I asked my contractor if he pulls a vacuum after he charges the system ... Is he correct?

How do you vacuum AFTER a charge?
... Timing might be off just a tad.

LOL...

I missed that part.

[heetseeker]

So the vacuuming is done during the charge? Does that mean that you can't recover any moisture if somebody charged your system with an inadequate vacuum previously. If you get acid in your system , can it be fixed or do you need a brand new charge? Where does the acid do its damage?

[beenthere]

On a new system, the vacuum is pulled on the new line set, and indoor coil.
The outdoor unit is factory charged.

After the vacuum is pulled and verified that it is holding and at a deeop enough level, then the lines can be static charged if the system requires more charge, or the valves can be opened.

Acid damages the electrical windings in the compressor.

If it has to be changed out because of acid, the cleanup filters are also installed.

He may have just said it backwards, and done it right.

[heetseeker]

beenthere

Much thanks for answering so many of my questions. You have been very kind.

[sadlier]

Originally posted by beenthere
sadlier, we're talking a Mercury u tube, not water.

Mercury U tube is what I spoke of first. Water U tube was thrown in since, if the water didn't boil off, the distance would be 1/4" which is much more easily readable.

[beenthere]

Originally posted by sadlier

Originally posted by beenthere
sadlier, we're talking a Mercury u tube, not water.

Mercury U tube is what I spoke of first. Water U tube was thrown in since, if the water didn't boil off, the distance would be 1/4" which is much more easily readable.

Sorry, saw the water comment and jump to conclusions.

Guess I got my excersise for the day yesterday.