One of our refrigeration units went down today. When I first got there the unit was pretty hot and I thought it had possibly gone out on thermal. Checked for voltage to the compressor and it was what it was supposed to be. Figured while I let it cool down I would go grab a set of gauges.
Gauges read around 100psig. I powered it up and the needles in the gauges didn't even shake. Pressure stayed the same. Amp draw was low, but I could feel it vibrating. It just wasn't pumping from what I could tell.
So I'm pretty sure the compressor is shot. Trick is this compressor was changed out almost exactly a year ago. Anyhow, I'm hesitant to put a new compressor in because I'm bit stumped on what may have caused the problem. We have 4 similar systems running side by side and the other 3 are not having the same issue so I don't believe its an environmental issue.
Compressor is a 3 phase Copeland, R-22 unit.