Practice Test Geeks(CFC) Chlorofluorocarbon Certification Practice Test
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Recovery Equipment & Techniques 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.

Read the first 7 Recovery Equipment & Techniques flashcards as text

  1. What is the minimum required recovery efficiency for systems containing more than 200 pounds of refrigerant when using system-dependent (passive) recovery equipment?

    Answer: 90%

    EPA regulations require 90% recovery efficiency for systems with more than 200 pounds of refrigerant using system-dependent equipment.

  2. Which type of recovery cylinder is specifically prohibited for use when recovering refrigerants?

    Answer: Disposable cylinders originally used for refrigerant

    Disposable (non-refillable) cylinders must never be reused for refrigerant recovery as they are not designed to withstand refilling pressures.

  3. When recovering refrigerant from a system with a severely contaminated compressor, the BEST practice is to:

    Answer: Use a dedicated recovery machine with an oil separator

    A recovery machine with an oil separator prevents contaminated oil and debris from damaging the recovery equipment and keeps the recovered refrigerant cleaner.

  4. What does a 'push-pull' recovery method accomplish that single-port recovery does not?

    Answer: It speeds recovery by simultaneously pushing vapor from the high side and pulling from the low side

    Push-pull recovery uses both high and low side ports simultaneously to accelerate refrigerant removal from the system.

  5. A technician notices the recovery machine is running but refrigerant flow has stopped and suction pressure has risen. The MOST likely cause is:

    Answer: The recovery cylinder is full or the recovery machine is overheating

    Rising suction pressure with no flow typically indicates the recovery cylinder is at capacity or the machine has shut down due to high discharge temperature.

  6. Before connecting recovery equipment to a system, a technician should FIRST:

    Answer: Identify the refrigerant type using an identifier

    Identifying the refrigerant type before recovery prevents cross-contamination and ensures the correct recovery cylinder is used.

  7. What happens to recovery efficiency when ambient temperature is very low during the recovery process?

    Answer: Efficiency decreases because low temperature reduces refrigerant vapor pressure

    Low ambient temperatures reduce refrigerant vapor pressure, making it harder to pull vapor into the recovery machine and reducing overall efficiency.