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Sounds like you probably got it. Wonder where the rust came from? Real world sure as heck ain't like the books/schools, is it?
Like you, I usually try to make the "final" tstat adjustment in the...

With the transient conditions you're seeing, might not trust the temp/press relationships you're using. That is: pressures are measured psi, temperatures are measured ºF. Certainly agree something is...

We ought to start another thread about various bits of wisdom from bar birds and other knowledgeable people.

Wasn't at the time, Maybe I should have been.
I have noticed that I get sharper when I've had a few (also better looking and my singing improves).

Exactly right! Wish I could think of comebacks like that at the time.

I am not making a suggestion!
The discussion was in a bar and I was talking to the bartender about the advantages of keeping the RI cooler condensers (floor level) clean. Obviously I told the "idea...

Was told,"When those filters get dirty, you can just turn them over 'till the other side gets dirty too". When asked about the dirt from the first side being blown into the system, I was told "never...

Two other very useful combos:
Alt 230 µ and Alt 234 Ω

° (Alt 0176) or º (Alt 167) either seem to work, the Alt 0176 looks a bit smaller.

Rough crowd! Lot of things that would be good to change, but for the most part, preaching to the choir.
As a suggestion for additions to the "wish list", how about:
All evidence is admissable- up...

You guys have tons more experience than I do, but I don't think I've ever found a leak in a lineset. Found 'em flattened, corroded and one LL had a "custom cooling kink" in it, but no leaks.

Believe the op stated several times that this was new construction.
Surely the lines installed were new.
Short of damage caused by the owner or a really corrosive environment, it seems the...

I've only got one I'm responsible for. It's the make-up air for a big kitchen hood. The summertime rooftop RH here in the Pacific Northwest is pretty low so it's very effective in cooling the air....

I don't think anybody had changed the filter (which is right where the photo was taken) for many years. It was completely clogged and airflow had collapsed it. Smoking hasn't been allowed in bars in...

The Grainger cat. shows 134A mobile and 134 stationary, so I submitted this question to Dupont. Recieved a nice phone call from an obviously competent tech (lady) who said the difference was only in...

Oh yeah, wax would be another. In any case I'd at least like to flush that dye out and change that drier. Quick job but I'm not so charitable I'd do it for free. This was the first thing I did for...

Thought about moisture, or maybe a small piece of something. Figured the caps are slightly smaller where the braze had shrunk when solidifying. Anyway it sure feels like a real "hack" that I can't...

"I have a system where one of the past residents used bleach to keep her condensate drain clear. I've been able to patch up two capillaries but I still have a pinhole leak in there somewhere and have...

In desperation on a busy Friday evening, I tried heating a clogged cap tube with a solder gun. Large reach in refer, 134A, schraders on both hi and low, real filter/drier in lieu of a spun clog...

Fix..., Might consider a bit more elaboration here. Why does such a small unit have two TXVs? Two evaporators? If you carefull reread the rest of your post you will probably see where the confusion...

Don't get me wrong. I'm an old Mechanical engineer, all the useful chemistry I learned was in thermodynamics. As far as the acidity of CO2, in either of its fluid states, I have to listen to guys...

Just wandered through several Google returns trying to find something about liquid CO2 being highly acidic. All I could find discussed the relatively weak carbonic acid resulting from CO2 in water....

dprimrose, I agree. Always figured purging was to prevent oxide scale in the system, evacuation was to minimize noncondensibles and moisture.

Gotta be at least R30 anyway. Those sticky walls sure "filtered" the dust out of the airstream.

Checking the filters in a rooftop package, found filters completely plugged/collapsed/bypassed. Looking down return air duct found this:...