EPA 608 609 Universal 2

Question 1

Under the Clean Air Act, what is the maximum allowable leak rate for a commercial refrigeration appliance with a charge of more than 50 pounds before repairs are required?

Accepted Answer

30% per year

Answer

Commercial refrigeration appliances have a 30% annual leak rate threshold that triggers mandatory repair.

Question 2

Which type of recovery device must be used when recovering refrigerant from a system that contains a near-azeotropic blend like R-410A?

Accepted Answer

Liquid recovery to avoid fractionation

Answer

Blends should be recovered in the liquid phase to prevent fractionation that changes their composition.

Question 3

What does the term 'ozone depletion potential' (ODP) measure?

Accepted Answer

A refrigerant's ability to destroy stratospheric ozone relative to R-11

Answer

ODP measures a substance's ozone destruction capacity using R-11 as the baseline of 1.0.

Question 4

When is a technician allowed to vent a small amount of refrigerant into the atmosphere?

Accepted Answer

Never, except for de minimis releases during connection/disconnection

Answer

Only de minimis releases that occur during normal connecting and disconnecting of recovery equipment are allowed.

Question 5

What is the primary purpose of a system-dependent (passive) recovery device?

Accepted Answer

To recover refrigerant from small appliances using the system's own compressor or pressure

Answer

Passive recovery relies on the appliance's own compressor or internal pressure and is limited to small appliances.

EPA 608 609 Practice Test

EPA 608 609 Practice Test

EPA 608 609 Universal 2