Had a call for poor performance (wouldn't get the house below 80F) on a 100F day.
Here sits this 1967 Luxaire CAC252 condensing unit. Not sure how many of you have had the pleasure to work on one of these, but it's wedge shaped like a doorstop. The whole slanted top with the cond. fan in it is hinged and opens up.
It's running non-stop and the pressures are 94 & 477. It's got the original Tecumseh compressor and it ain't takin a break for nuthin. The condenser was clean on the outside, but was totally plugged up inside it. I spent an hour slowly going down every pass several times with a jet nozzle before stuff quit coming out.
The pressures came down to 295 & 74 and the compressor sounded like it was brand new.