CFC Recovery Equipment & Techniques 5

Question 1

What is the PRIMARY reason liquid refrigerant recovery is faster than vapor recovery?

Accepted Answer

Liquid refrigerant contains much more mass per unit volume than vapor

Answer

Liquid refrigerant is far denser than vapor, so the same volume of liquid contains significantly more refrigerant mass, speeding up the overall recovery process.

Question 2

A technician connects a recovery machine to a system and the machine runs but no refrigerant is being recovered. After checking connections, the NEXT step should be to:

Accepted Answer

Check that the system service valves are open and the recovery cylinder valve is open

Answer

Closed service valves or a closed cylinder valve are the most common causes of zero flow despite the machine running.

Question 3

Which statement about recovering refrigerant from a system with a hermetic compressor burnout is CORRECT?

Accepted Answer

The refrigerant should be labeled as contaminated and the reclaim facility must be notified of the burnout

Answer

Refrigerant from a burnout must be labeled as contaminated and the reclaim facility must be informed so they can handle it appropriately.

Question 4

EPA Section 608 defines 'substantially contribute' to ozone depletion. Under this standard, technicians are prohibited from knowingly venting refrigerants during:

Accepted Answer

Maintenance, service, repair, and disposal of refrigerant-containing appliances

Answer

Section 608 prohibits knowing venting during all phases of maintenance, service, repair, and disposal of equipment containing regulated refrigerants.

Question 5

When recovering refrigerant from a large chiller using a dedicated recovery unit, the technician should connect recovery hoses to:

Accepted Answer

Both high-side and low-side service ports for push-pull recovery

Answer

Large chillers benefit from push-pull recovery using both service ports to maximize recovery speed and efficiency.

(CFC) Chlorofluorocarbon Certification Practice Test

(CFC) Chlorofluorocarbon Certification Practice Test

CFC Recovery Equipment & Techniques 5