Do I need to remove all of the refrigerant from the NRL unit when changing the compressor(s) after a burnout?

Chillers, free cooling units, heat pumps

Depending on the model of the NRL the liquid line and discharge lines are equipped with isolating valves. The liquid line the refrigerant charge must be completely replaced along with the liquid line filters in the case of a burnout. All of the oil in the unaffected compressors must be changed as well.