30HXC EXV oil in it?

[Nealga]

Hi!
I just got to work (I work on offshore accommodation facility) and found one unit without charge and oil in EXV.
Can someone exlane to me how oil got to there?
I am marine engineer and not a HVAC but do know the basics.

Many thanks!
Neal

[frank]

Here's a link to a YouTube video
https://youtu.be/-PGMlIaFsxM

[Peter_1]

Oil is always circulating in the whole system... No refrigerant... leak, never filled... Pressurize and determine if leak tight