Sorry for opening another thread, hopefully you won't hate me but I still have plenty to learn in this journey.
Unfortunately I misplaced a cap on my compressor (1/3 HP R290 freezer compressor) and realized some days after as the inlet was completely open. I'm afraid that the POE oil mighy have been contaminated now, so I was wondering what I should do. I've tried pulling a vacuum to 800 micron, and it didnt seem to be rising a lot after that, but I've read that POE oil is very difficult to remove humidity out of, so a vacuum might not be enough. Should I swap it for new oil? Also, I realized I have a normal nitrogen tank, not a "dry nitrogen" one. Should I be afraid to reintroduce the same problem once I'll pressure test the system?
Thank you!