Universal Flashcards

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?

Answer: 30% per year

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

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

Answer: Liquid recovery to avoid fractionation

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

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

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

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

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

Answer: Never, except for de minimis releases during connection/disconnection

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

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

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

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

Refrigerant cylinders should never be filled above what percentage of capacity to allow for liquid expansion?

Answer: 80%

Cylinders must not be filled beyond 80% of capacity to allow room for thermal expansion of the liquid.

Which agency administers and enforces the Section 608 refrigerant certification program?

Answer: EPA

The Environmental Protection Agency administers Section 608 of the Clean Air Act and its certification program.