Hi all,
I need some advice on recommended oil pressure setting for a Grasso M-1. I dont have any other information on the compressor other than the serial number and this is the only one I have ever seen. This compressors oil pump is bolted onto the compressor and driven off the female rotor, there is a oil regulator/dump valve available to set the oil pressure, all other oil pressure is supplied by system differental. The oil presssure appears to be only used for loading, must have a spring for the slide to return to minimum. Running on NH3, LP = 3bar, HP = 10bar. Oil cooling via thermosyphen. Fixed speed at 3000rpm.