I am working with an owner who has a new York/JCI 850 Ton, Variable Speed centrifugal chiller (model YK). The compressor shaft seal is a “wet seal” and I understand that this requires some oil to pass through the seal. York service data indicates that any oil usage under 2 oz every 14 days is acceptable. This seems like a good bit of oil to me.

Does anyone have any experience with these machines? And if so what type of oil usage rate have you experienced?