EPA 608 Refrigerant Recovery, Recycling & Reclamation 2

Question 1

What is the 'push-pull' method used in refrigerant recovery?

Accepted Answer

Connecting the recovery machine between the liquid line and recovery cylinder to use system pressure and the recovery unit together to speed liquid removal

Answer

Two technicians recovering refrigerant from both high and low sides simultaneously

Answer

Alternating between vapor recovery and liquid recovery modes in cycles

Answer

Using a vacuum pump to pull refrigerant while system pressure pushes vapor

Question 2

Which refrigerant container is it ILLEGAL to refill with recovered refrigerant?

Accepted Answer

Non-refillable (disposable) refrigerant cylinders

Answer

DOT-approved recovery cylinders

Answer

Refillable cylinders certified for refrigerant service

Answer

Department of Transportation approved nurse tanks

Question 3

Before transferring recovered refrigerant into a recovery cylinder, what capacity limit must the technician observe?

Accepted Answer

Fill to no more than 80% of total capacity by liquid volume

Answer

Fill to no more than 60% of total capacity by liquid volume

Answer

Fill completely to maximize storage efficiency

Answer

Fill to no more than 50% of total capacity by weight

Question 4

Which organization must certify a refrigerant reclaimer before it can process and resell refrigerant to ARI 700 purity standards?

Accepted Answer

EPA

Answer

ASHRAE

Answer

DOT

Answer

OSHA

Question 5

For a small appliance (Type I) with a NON-functional compressor, what is the minimum refrigerant recovery efficiency required?

Accepted Answer

80%

Answer

70%

Answer

90%

Answer

95%

Question 6

Which of the following correctly describes 'contaminated' refrigerant?

Accepted Answer

Refrigerant that contains impurities such as moisture, oil, air, or acid

Answer

Refrigerant that contains CFC molecules known to deplete the ozone layer

Answer

Refrigerant that has been mixed with an incompatible refrigerant blend

Answer

Refrigerant that is more than three years old and past its service life

Question 7

What must happen to refrigerant that is too contaminated for on-site recycling?

Accepted Answer

It must be sent to an EPA-certified reclamation facility or destroyed

Answer

It must be destroyed immediately on-site

Answer

It may be vented to the atmosphere if contamination exceeds 50%

Answer

It must be returned directly to the original refrigerant manufacturer