Huge decrease in oil level in york compressor

[Iso Man]

Hello!

I'm a new member here and I hope to find a help to my big problem as a fresh graduate engineer.
in the factory that I work in I've york compressors, actually 3 compressors.
two of them are working and the third one when shows oil system error. when I push the reset button the oil flow stage starts for 45 seconds and during this stage most of the oil in the compressor disappear and the oil level decreases rapidly and it never go the prelub stage.
I changed the ammonia filter but the same problem still exist!
can any one help me pleaaaaaaaase ?

[Royal241]

I thought oil pressure switches open after 2 minutes, if the pressure doesn't rise...

[Magoo]

The pre lube pump is not acheiving correct PD so system faults, and you are filling compressor with oil. Change pre lube oil filter after the pump. The compressor will really bark and strain when it starts as it is full of oil. Be carefull.