EPA 608 609 Recovery, Recycling, and Reclaiming 3

Question 1

When recovering from an appliance with a full charge over 200 lbs of HCFC-22 (a high-pressure refrigerant) for disposal, recovery equipment must reach what vacuum level?

Accepted Answer

10 inches Hg

Answer

For appliances with more than 200 lbs of high-pressure refrigerant being disposed, recovery must reach 10 inches of mercury vacuum.

Question 2

Self-contained (active) recovery equipment differs from system-dependent (passive) equipment because it:

Accepted Answer

Has its own compressor/pump to pull refrigerant from the appliance

Answer

Self-contained recovery equipment has its own means (compressor or pump) to draw refrigerant out, unlike passive equipment that depends on the system's own pressure.

Question 3

System-dependent (passive) recovery may only be used on appliances containing:

Accepted Answer

15 lbs or less of refrigerant

Answer

Passive recovery is limited to small appliances with 15 lbs or less of refrigerant.

Question 4

Recovering liquid refrigerant first, rather than vapor, speeds the process mainly because:

Accepted Answer

Liquid removes a large mass quickly and reduces time spent pulling vapor

Answer

Removing liquid first extracts the bulk of the charge by mass rapidly, leaving only residual vapor to recover.

Question 5

Heating the appliance's refrigerant or using a heat source during recovery helps by:

Accepted Answer

Raising refrigerant pressure to speed vapor recovery

Answer

Gentle warming raises refrigerant pressure, pushing more refrigerant out and speeding recovery.

EPA 608 609 Practice Test

EPA 608 609 Practice Test

EPA 608 609 Recovery, Recycling, and Reclaiming 3