Ozone molecule consists of ______ atoms of oxygen

Non-condensables in a refrigeration system result in a _______ discharge pressure

Ozone depletion Increase global warming

If a technician is already trained and certified to handle CFC-12, he has to be re-certified to handle HFC-134a

The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the release of ozone depleting substances.

Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that found in buses, also requires Section ______ certification

Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and intended to be returned to, a mobile air-conditioning system cannot exceed _______ PPM by weight.

At high temperaturesCFC-12 can decompose to form _______

Refrigerants are lighter than the air:

Every refrigerant cylinder need not be protected by some type of pressure relief device:

Stratosphere layer consists of about _____ of the available Ozone:

CFCs are highly reactive in _____ of atmosphere