Pretest 608 1and3

What is the new maximum allowable annual leak rate for a comfort cooling system that contains 50 pounds or more of R-410A starting in 2019?

• 5%

• 10%

• 15%

• 20%

When recovering refrigerant from a medium-pressure system with more than 200 lbs. of refrigerant, to what level should you recover?

• 10"hg

• 15"hg

• 20"hg

• 25"hg

What happens to a refrigerant when it is heated above the saturation temperature?

• It condenses into a liquid

• It remains in a vapor state

• It freezes into a solid

• It decomposes chemically

Tags

NGSS.HS-PS3-4

What color is the top of a Type II recovery cylinder?

• Blue

• Yellow

• Red

• Green

What is the maximum fill level for a recovery cylinder?

• 50%

• 60%

• 80%

• 100%

How often must a reusable container used for refrigerant that is under high pressure be hydrostatically tested?

• Every 3 years

• Every 5 years

• Every 10 years

• Every 12 years

What type of refrigerant is R-134a classified as?

• HFC (Hydrofluorocarbon)

• CFC (Chlorofluorocarbon)

• HCFC (Hydrochlorofluorocarbon)

• HC (Hydrocarbon)

Which component in a refrigeration system changes a low-pressure vapor to a high-pressure vapor?

• Condenser

• Compressor

• Evaporator

• Expansion valve

Under the EPA's Clean Air Act, which certification is required to legally work with refrigerants?

• Type I

• Type II

• Type III

• Universal

Which device in a refrigeration system is responsible for absorbing heat from the environment?

• Compressor

• Condenser

• Evaporator

• Expansion valve