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Refrigerant Recovery and Handling Flashcards

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

Read the first 7 Refrigerant Recovery and Handling flashcards as text

  1. What is the correct procedure when a recovery cylinder's pressure relief valve opens during the recovery process?

    Answer: Stop recovery immediately, move the cylinder to a safe area, and notify the reclamation facility

    A PRV opening indicates the cylinder is overpressurized or overheated, requiring immediate cessation of recovery and safe relocation of the cylinder.

  2. Which federal certification is required for technicians who purchase refrigerants in containers larger than 2 lbs?

    Answer: EPA 608 certification

    EPA Section 608 certification is federally required to purchase refrigerants in containers larger than 2 lbs.

  3. A technician is recovering R-410A from a system and notices the recovery machine is running hot and slowing down. What is the most likely cause?

    Answer: The recovery cylinder is almost full

    As a recovery cylinder fills, discharge pressure increases dramatically, causing the recovery machine to work harder, run hotter, and slow down.

  4. What does ARI Standard 700 specify for reclaimed refrigerants?

    Answer: Minimum purity levels refrigerant must meet before it can be resold

    ARI Standard 700 (now AHRI 700) establishes the purity specifications that reclaimed refrigerant must meet to be resold as 'like-new' quality.

  5. When must a technician perform refrigerant recovery before opening a system for repairs?

    Answer: Always, regardless of refrigerant type or charge size

    EPA Section 608 requires refrigerant recovery before opening ANY refrigerant-containing system, regardless of refrigerant type or charge size.

  6. What does the color code GRAY indicate on a refrigerant recovery cylinder?

    Answer: The cylinder is a DOT-approved recovery cylinder (not a specific refrigerant)

    Gray-colored recovery cylinders are the standard DOT-approved color for refrigerant recovery use, not indicating a specific refrigerant type.

  7. Which of the following scenarios would be a violation of EPA Section 608 regulations?

    Answer: Intentionally venting nitrogen used for leak testing

    While nitrogen itself is not regulated, intentionally venting refrigerants is a violation—however, nitrogen venting is actually permitted since it is not an ozone-depleting or regulated substance; this answer is a trick: venting nitrogen is legal.