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.
Read the first 7 Refrigerant Handling & Recovery Procedures flashcards as text
Which EPA-approved method allows a technician to check recovery cylinder pressure to determine if non-condensable gases are present?
Answer: Compare cylinder pressure to saturation pressure at ambient temperature
Non-condensables are indicated when cylinder pressure exceeds the saturation pressure of the refrigerant at the ambient temperature.
When performing a push-pull recovery method, the vapor line from the system should connect to which port on the recovery machine?
Answer: The vapor inlet port
In push-pull recovery, vapor is drawn from the system through the vapor inlet of the recovery machine while liquid is pushed directly to the recovery cylinder.
A technician is recovering refrigerant from a centrifugal chiller. What type of refrigerant does this equipment most commonly contain?
Answer: Low-pressure refrigerant like R-11 or R-123
Centrifugal chillers typically use low-pressure refrigerants such as R-11 or R-123, which operate below atmospheric pressure.
What is the significance of the gross weight stamped on a recovery cylinder?
Answer: It is the combined tare weight plus maximum allowable refrigerant fill weight
The gross weight stamped on a recovery cylinder is the tare weight plus the maximum refrigerant the cylinder is rated to hold.
Which of the following best describes the 'system-dependent' recovery process?
Answer: Relies on the refrigeration system's compressor to assist recovery
System-dependent (passive) recovery uses the refrigeration system's own compressor to move refrigerant into the recovery cylinder, requiring the system to be functional.
A technician notices that refrigerant vapor is present in the equipment room. What is the FIRST safety action to take?
Answer: Ventilate the area and evacuate non-essential personnel
The first priority is to ventilate the area and remove non-essential personnel to prevent exposure to displaced oxygen or refrigerant toxicity.
Under EPA regulations, recovered refrigerant that is returned to the same system or another system owned by the same person does NOT need to meet what requirement?
Answer: ARI 700 purity standards
Refrigerant returned to the same system or another system owned by the same person is exempt from ARI 700 reclamation purity standards.