Refrigerant Recovery and Safety Quiz

What is the maximum amount of refrigerant that a small appliance can contain according to the EPA definition?

• 10 pounds

• 5 pounds

• 15 pounds

• 20 pounds

Which type of refrigerant is not approved for new Type I appliances?

• R-600a

• R-290

• R-404A

• R-450A

What is the minimum recovery efficiency required for self-contained recovery devices when the compressor is operating?

• 70%

• 80%

• 90%

• 95%

Which of the following refrigerants generally does not need to be recovered due to its high pressure?

• R-134a

• R-410A

• R-744 (CO2)

• R-22

What should be done if a technician suspects that the refrigerant in a recovery cylinder is contaminated?

• Mix it with another refrigerant

• Release it into the atmosphere

• Compare pressure to a pressure-temperature chart

• Use it in another appliance

What is the purpose of using a piercing access valve on small appliances?

• To permanently seal the system

• To add or remove refrigerant

• To increase system pressure

• To decrease system temperature

What is the recommended safety practice when using nitrogen to service a refrigeration system?

• Use a tank without a regulator

• Use a tank with a regulator

• Vent nitrogen into a closed space

• Mix nitrogen with refrigerant

What should be done if a large refrigerant leak occurs in an enclosed area?

• Use a fan to circulate the air

• Vent the refrigerant into the atmosphere

• Vacate and naturally ventilate the area

• Seal the area to contain the leak

Which of the following is a sign of a compressor burn-out during refrigerant recovery?

• High pressure readings

• Pungent odor

• Low refrigerant levels

• Increased cooling efficiency

What is the maximum charge of HCFCs or HFCs allowed for passive recovery equipment use?

• 5 pounds

• 10 pounds

• 15 pounds

• 20 pounds