I'd appriciate anyone that could help me with the following problem.
I have a McQuay PEH 1000 centrifugal chiller and there is no oil return to the pot. I saw a similar post with some kind of "oring" in IGV. What do you mean with this and what is "IGV"?
A manual service would be much appriciated. My e-mail address is: info@vatis.gr