Question 58Refrigeration & AC - 1st Asst/Chief

The correct answer is C) 90%. The Clean Air Act requires that when recovering R-12 (also known as CFC-12 or Freon-12) from a small appliance with a working compressor, using a recovery device manufactured after November 15, 1993, at least 90% of the remaining refrigerant charge must be removed from the system. The other options are incorrect because 75% is insufficient, 80% is also insufficient, and 99% is unnecessary beyond the required 90% removal. The 90% requirement ensures that the vast majority of the ozone-depleting R-12 is recovered and prevented from being released into the atmosphere.