Hi, Could anyone please Help ! I am new on a York Air cooled chiller Model : YCAL0070SC and going to replace a bad compressor. Two questions are : 1- Do I need to manual pump down to keep refrigerant in condenser of chiller ? How I do this process, can a system allow to pump down OR just simple recovery all refrigerant out of system ?
2- What can I do to by pass a low side system to add oil to a compressor when system is in operations ? Thank you in advance