Final answer:
Technicians must evacuate an appliance component containing more than 200 pounds of CFC-12 to a specific vacuum level before making a major repair.
Step-by-step explanation:
When using recovery and recycling equipment manufactured after November 15, 1993, technicians must evacuate an appliance component containing more than 200 pounds of CFC-12 to a certain level before making a major repair. The level to which the CFC-12 must be evacuated is typically stated as a vacuum level, which is the pressure at which the CFC-12 is reduced to a gaseous state. This vacuum level ensures that there is minimal CFC-12 left in the component to prevent environmental contamination.