can't find a model or serial number for the chiller.1960's vintage.
The only number i have is the compressor m# which i posted. Need to know
what the net oil pressure should be.
Thanks.
The open drive compressor's oil pressure shouldn't really be any different than a hermetic. Typically you'd be looking at 25-35 differential. If there's a switch for the oil, that would give some clue.
25 30 is about right it has an adjustable regulator on it. open the cap on top over the pump crank it down a little if you need to. I think yorks shop just tossed all those out if you need a rebuild they got the model R to replace it but piping needs to be changed and motor lifted. the 12 and 16 cylinder just need motor lifted IIRC
I just located my manual on this compressor and it calls for 35 to 40 psi higher than the suction pressure. At no time should the oil pressure be less than 30 psig.
