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Refrigerant Handling & Recovery Procedures Flashcards

7 cards from real CFC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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

    Answer: 90%

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

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

    Answer: R-502

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

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

    Answer: EPA-mandated recovery level

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

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

    Answer: Unknown or mixed refrigerants

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

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

    Answer: Return it to the supplier for reclamation

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

  6. Under EPA Section 608 regulations, which of the following is NOT an exempt situation allowing refrigerant release during normal operation?

    Answer: Releases resulting from purging non-condensables from a recovery cylinder

    Purging non-condensables from recovery cylinders releases refrigerant and is not an exempted activity under Section 608 regulations.

  7. What is the purpose of the oil separator in a refrigerant recovery machine?

    Answer: To separate compressor oil from recovered refrigerant before storage

    The oil separator removes compressor lubricating oil from recovered refrigerant so it is not transferred into recovery cylinders, maintaining refrigerant quality.