Hi , Im going to be replacing a couple of compressors on a 6 compressor Powerpax chiller that has a Javac Reco emergency recovery setup as chiller holds 1200kg of R134A.

Whats the general procedure for working around this type of automatic recovery setup.
I can valve off each compressor and recover the refrigerant in the compressor before replacement .

I would think best practice would be to isolate the recovery system to prevent unwanted chiller recovery as not sure how sensitive these are. It would probably have refrigerant isolation valves somewhere along the lines I could potentially isolate .

Thoughts would be appreciated.

Thanks