EPA 608 609 Type II High-Pressure Systems 3

Question 1

When recovering refrigerant from a high-pressure system, the recovery cylinder should never be filled beyond what percentage of capacity?

Accepted Answer

80%

Answer

Recovery cylinders must not be filled past 80% to allow for liquid expansion.

Question 2

What is the standard color code for a refrigerant recovery cylinder?

Accepted Answer

Gray with yellow top

Answer

Recovery cylinders are gray with a yellow top to distinguish them.

Question 3

Liquid recovery from a high-pressure system is faster than vapor recovery primarily because:

Accepted Answer

More mass moves per unit time

Answer

Liquid recovery removes more refrigerant mass per minute than vapor recovery.

Question 4

During recovery, frost forming on the recovery machine suction line usually indicates:

Accepted Answer

Liquid refrigerant entering the compressor

Answer

Frosting on the suction line signals liquid slugging into the recovery compressor.

Question 5

Which best describes 'recycling' of refrigerant?

Accepted Answer

Reducing contaminants with oil separation and filtration on site

Answer

Recycling cleans refrigerant on site through oil separation and filter-driers.

EPA 608 609 Practice Test