PDA

View Full Version : They sent me out of town for a bleeding head...



R12rules
03-25-2007, 08:31 PM
(bet that got your attention)

the guy told me over the phone he was looking at this copeland and the head assembly was bleeding out freon and oil.
Right at the suction service valve on the side of the unit.

(discharge valve assembly to be correct)


I get there, quite a drive, attact my gages and set the time clock for defrost.

I took at the hi side gage and its moving towards 400 pounds rapidly!!!


Turned out someone saw the sight glass bubbling and added freon, (an r-12 blend)
I recovered a full cylinder of excess refrigerant and changed the time clock, defrosted the coils and went home.


no wonder the head gasket was leaking... with a pressure like THAT I would blow a gasket too!!! :)


the gasket didnt leak no more once I got the correct amount of go juice in the system.


This was a 1983 semi-hermetic five horse with three 1 ton coils downstairs in a c-store.


tsk, tsk.

tis hard to get good help these days.

icemeister
03-25-2007, 10:29 PM
If this is an old 5 HP R12 unit, I would expect it to have a high pressure safety control set for around 250# or so. I've seen some blow the relief valve way before they hit 400# as well. Maybe you should plan on replacing the HP control, too.