The most cost-effective method of recovering refrigerant from a low-pressure chiller with more than 500 lbs. of refrigerant and to meet EPA requirements is to recover the refrigerant using what protocol?

Question

Accepted Answer

liquid recovery using a liquid pump, followed by vapor recovery using a vacuum pump-based recovery unit

Answer

vapor recovery using a vacuum pump-based recovery unit followed by liquid recovery using a liquid pump

Answer

recovery using a vacuum pump-based vapor recovery machine only

Answer

recovering using a liquid pump only

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