#1 EPA 608 CORE

A refrigerant label to identify the type of refrigerant recovered is placed on recovery cylinders for all of the following reasons, EXCEPT to:

• Avoid accidental mixing of recovered refrigerants.

• Allow the recycler to identify the contents.

• Tell if the cylinder is safe.

• Allow the technician's company to determine the amount of refrigerant recovered for record keeping purposes.

According to the ASHRAE refrigerant safety classification standard, which of the following designations would be the safest?

• A-1

• A-3

• B-1

• B-3

Which of the following refrigerants is an HFO?

• R-1234yf

• R-123

• R-134a

• All three are HFOs

What is a ternary blend refrigerant?

• A two-part mixture

• A three-part mixture

• A four-part mixture

• A five-part mixture

Which of the following is NOT a "refrigerant" as it is used in Section 608 of the Clean Air Act?

• An ozone-depleting substance used in a household or commercial air conditioner.

• A non-ozone depleting substance used in a refrigerator or freezer.

• Any substitute for a Class I or Class II substance used in a chiller.

• A leak trace gas.

What range is displayed on a high pressure gauge on a service manifold?

• 500 microns to 0 psi

• 0 to 200 psi

• 0 to 800 psi

• 250 psi to 750 psi

Which of the following gases is used as the baseline measurement for global warming potential?

• Ammonia

• Carbon Dioxide

• CFC-12

• Propane

Which of the following is not a violation of the refrigerant management regulations under the Clean Air Act?

• Failing to recover refrigerant in a system to the required evacuation level.

• Servicing a system that uses CFCs or HCFCs after the phaseout of those refrigerants.

• Failing to recover refrigerant in a leaking system to at least 0 psig.

• Adding nitrogen to a fully charged system, then call the mixture a "leak check gas" and venting the mixture to the atmosphere.

During servicing of a refrigeration system containing either R-22 or R-410A, the refrigerant must be:

• Replaced with R-32

• Recovered

• Vented

• Destroyed

Which of the following is a "low-pressure refrigerant" under EPA's refrigerant recycling regulations?

• R-134a

• R-123

• R-22

• R-500