EPA 608 609 - EPA Refrigerant Handling Recovery, Recycling, and Reclaiming Questions and Answers 2

Question 1

What percentage of refrigerant must remain in a system operating above atmospheric pressure for a passive recovery process to stop, according to EPA efficiency standards?

Accepted Answer

Recovery must reduce system pressure to 4 inches of mercury vacuum

Answer

90%

Answer

80%

Answer

The system must reach 0 psig or lower

Question 2

Which process restores used refrigerant to the purity standards specified by AHRI Standard 700 and is the only process that allows refrigerant to be sold to a new owner?

Accepted Answer

Reclaiming

Answer

Recovery

Answer

Recycling

Answer

Recharging

Question 3

What must technicians do with recovered refrigerant that is contaminated and cannot be cleaned on-site?

Accepted Answer

Send it to an EPA-certified reclamation facility

Answer

Vent it to atmosphere since it cannot be reused

Answer

Dispose of it in a municipal landfill

Answer

Return it directly to the original equipment manufacturer

Question 4

During a refrigerant recovery operation, what indicates that a system has been sufficiently evacuated when using a recovery machine?

Accepted Answer

The system pressure has reached the required vacuum level and stabilizes

Answer

The recovery cylinder feels warm to the touch

Answer

The compressor current draw drops to zero

Answer

The sight glass shows clear refrigerant

Question 5

What type of refrigerant recovery system captures refrigerant without using a compressor, relying instead on pressure differentials and temperature changes?

Accepted Answer

Passive recovery system

Answer

Active recovery system

Answer

Vapor recovery system

Answer

Liquid recovery system

Question 6

Recovery cylinders used for refrigerant must comply with which Department of Transportation (DOT) specification?

Accepted Answer

DOT-4BA or DOT-4BW

Answer

DOT-5A or DOT-5B

Answer

DOT-11P or DOT-11T

Answer

Any standard pressure vessel meeting 150 psig rating