A recovery cylinder must not be filled more than what percentage of its capacity by weight?

• A. 50%
• B. 80%
• C. 90%
• D. 100%

Answer: (B)

A recovery cylinder must not be filled more than 80% of its capacity by weight to ensure safe and effective handling of refrigerants. This limitation is crucial for several reasons.

Firstly, the 80% fill ratio allows for the expansion of the refrigerant when it is heated. Refrigerants can change in volume dramatically with temperature fluctuations, and leaving adequate space in the cylinder helps prevent overpressure situations that could lead to a rupture or explosion.

Secondly, this regulation is in place to facilitate the recovery process. By keeping the cylinder properly filled, technicians can ensure that there is enough room for the gas being evacuated during recovery, which improves efficiency and minimizes the risk of equipment damage.

Lastly, adhering to the 80% fill limit is also part of compliance with regulations set forth by the Environmental Protection Agency (EPA) and other safety standards, ensuring that technicians are following best practices for environmental protection and worker safety.