Dear all,

need your help --- your opinion or maybe some of your experience.

One of industrial plant recently started we need to shut down (don't ask me for reason) and make preservation for a longer time ... idea is:

1. - remove all refigerant (R290-propane) make a good vacuum and after break vacuum with N2 up to 0,5 bar!?!

2. -the same will be done with water/propane HE secondary circuit - water side maybe to wash with some inhibitors then drain water and refill water side with N2 up to 0,2-0,3 bar

-any input or suggestion experience to above

the most important question is ...what to do with compressor oil within system ... keep it under pressure of N2 or drain it into drums or some other possiblity ...

any suggestion ... opinion ... your good or bad experience ... is welcome ...

Thanks for your time and effort

Best regards, Josip