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Question:

Recovery devices that were manufactured after November 15 1993 and are used for the recovery of refrigerant from small appliances must be capable of

A recovering 90% of the refrigerant when the compressor is operating or achieving a 4 inch vacuum under the conditions of ARI 740-1993.
Explaination

Recovery devices that were manufactured after November 15 1993 and are used for the recovery of refrigerant from small appliances must be capable of recovering 90% of the refrigerant when the compressor is operating or achieving a 4 inch vacuum under the conditions of ARI 740-1993.
NT Note: Recovery devices that were manufactured after November 15 1993 and are used for the recovery of refrigerant from small appliances MUST ALSO be capable of recovering 80% of the refrigerant in an appliance if the appliance’s compressor is INOPERATIVE .