When recovering R-12 from a small appliance with a working compressor, using a recovery device manufactured after November 15, 1993, what percentage of the remaining charge must be removed from the system?

Correct Answer: Option D — 90%

EPA regulations require recovery equipment manufactured after November 15, 1993, when servicing small appliances with an operating compressor, to achieve a minimum of 90 percent recovery of the system's total refrigerant charge.