I was in the motor room where a coworker and myself replaced a grounded unit two weeks ago. Didnt know why it went bad. It just did.
Today I am there for a meat case. Half the case is warm, half is fine.
I decide to take some temps and pressures at the suction header, above and below the EPR.
Looks fine. Then I go and measure the temp at the suction to that brand spankin new unit. FIFTY degrees! And the suction header,R22, was reading eight pounds!
Please, somebody slap me .... but that's something like 74 degrees of superheat @ the compressor!
How the heck is that even running this long?
My employer just took over these stores. So I realize it is a work in progress.
I guess those who worked on this rack before us never used theri "Secret Decoder Ring"!