I do not know everything there is to know..for sure. That is why I posted. The only information I gathered was running pressures. The superheat was virtually noexistant. I had 120psi suction. So it was a superheat of 15-20 in a very small sample space. The suction line never got cold to the touch.Once the compressor was making a terrible sound I pulled the disconect, with respect to the 350-500 psi high side pressures I saw. Seemed logical at the time. As I said, I have never in my 15 years in the field seen R22 pressures that high, It is not common. Maybe some one else has.
Fifteen years and you've never seen it? You're insulting someones intelligence. A thread like this should just be shut.