CFC Refrigerant Handling & Recovery Procedures 2

Question 1

What is the minimum recovery efficiency required for appliances containing more than 200 pounds of refrigerant when using a system-dependent recovery device?

Accepted Answer

90%

Answer

EPA regulations require 90% recovery efficiency for appliances containing more than 200 pounds of refrigerant when using system-dependent (passive) recovery equipment.

Question 2

Which of the following refrigerants is classified as an R-500 series azeotropic blend?

Accepted Answer

R-502

Answer

R-502 is an R-500 series azeotropic blend consisting of R-22 and R-115, which behaves like a single-component refrigerant.

Question 3

When recovering refrigerant from a system with a leak, the technician must recover refrigerant to what condition before opening the system for repair?

Accepted Answer

EPA-mandated recovery level

Answer

Refrigerant must be recovered to the EPA-mandated recovery level before opening the system, which varies based on refrigerant type and equipment manufacture date.

Question 4

A recovery cylinder marked with a yellow top and gray body is designated for which type of refrigerant?

Accepted Answer

Unknown or mixed refrigerants

Answer

DOT color coding specifies that recovery cylinders with a yellow top and gray body are used for unknown or mixed refrigerants to prevent contamination.

Question 5

What action is required if a technician discovers that recovered refrigerant is contaminated with moisture and non-condensables?

Accepted Answer

Return it to the supplier for reclamation

Answer

Contaminated refrigerant that cannot be reused on-site must be returned to a reclaimer certified by the EPA for proper reclamation.

(CFC) Chlorofluorocarbon Certification Practice Test

(CFC) Chlorofluorocarbon Certification Practice Test

CFC Refrigerant Handling & Recovery Procedures 2