Question

When using recovery and recycling equipment manufactured before November 15 1993, technicians must evacuate an appliance containing 10 lbs of CFC-500 to which of the following levels before disposing of the appliance?

A) 0 psig
B) 4 in Hg vacuum
C) 10 inches of Hg vacuum
D) 15 inches of Hg vacuum

Answer 1

Technicians must evacuate an appliance containing CFC-500 to 4 inches of Mercury (Hg) vacuum before disposal when using older recovery and recycling equipment.

Step-by-step explanation:

When disposing of appliances containing chlorofluorocarbons (CFCs) such as CFC-500, it is important to adhere to EPA regulations concerning the evacuation of refrigerant to minimize release into the atmosphere. For recovery and recycling equipment manufactured before November 15, 1993, the regulation states that technicians must evacuate an appliance containing 10 lbs of CFC-500 to 4 inches of Mercury (Hg) vacuum before disposal. This process is crucial to ensure environmental safety and compliance with laws pertaining to ozone-depleting substances.