EPA 608 Core Recovery Equipment Quiz

What should be checked on a regular basis as part of maintenance practices for recovery equipment?

• Refrigerant leaks and oil levels

• Compressor operation and vacuum level

• Recovery tank fill level

• System pressures and refrigerant type

What is the minimum recovery requirement for self-contained (active) equipment when the compressor is operating?

• 80% of the refrigerant

• 90% of the refrigerant

• 4-inch vacuum

• No recovery requirement

Which type of refrigerant recovery devices can prevent loss of refrigerant from hoses when disconnected?

• Manually closed devices

• Automatically closed devices

• Devices with refrigerant scale

• Devices with internal float device

What type of hoses should be used when attaching a gauge set to check system pressures?

• Hoses with manual valve

• Hoses with self-sealing valve

• Hoses with refrigerant scale

• Hoses with internal float device

What should be done with the refrigerant vented off the top when filling a charging cylinder?

• It should be released into the atmosphere

• It should be recovered

• It should be stored in a separate container

• It should be left in the charging cylinder

Can a vacuum pump made for system dehydration directly recover refrigerant?

• Yes

• No

• Only for CFC refrigerants

• Only for HCFC refrigerants

Which refrigerant is approved for new household refrigerators, freezers, and combination refrigeration/freezers?

• R-600a

• R-290

• R-450A

• R-134a

Which refrigerants are approved for newly manufactured household refrigerators according to SNAP regulations?

• R-600a and R-134a

• R-290 and R-450A

• R-600a and R-450A

• R-290 and R-600a

What is the CAS number and UN number for butane (R-600a)?

• CAS #75-29-5, UN 1968

• CAS #75-29-5, UN 3159

• CAS #75-29-5, UN 1419

• CAS #75-29-5, UN 441a

Is it mandatory to repair a leak in a small appliance found to be leaking?

• Yes

• No

• Only if the leak is significant

• Only if the appliance is still under warranty