When filling a charging cylinder, what must be done to the refrigerant that is vented off the top?

• A. It can be safely released into the atmosphere without any precautions.
• B. It should be diluted with water before disposal.
• C. It must be recovered using approved equipment to prevent release into the atmosphere.
• D. It must be burned to neutralize its chemical properties.

Answer: (C)

Verified step by step guidance

1. Understand that refrigerants are often regulated substances due to their potential environmental impact, such as ozone depletion or global warming.
2. Recognize that venting refrigerants directly into the atmosphere is harmful and usually illegal because it releases greenhouse gases or ozone-depleting substances.
3. Learn that proper handling requires recovering the refrigerant using approved recovery equipment designed to capture and contain the gas safely.
4. Know that recovery prevents environmental damage and allows the refrigerant to be recycled or disposed of according to regulations.
5. Conclude that neither releasing, diluting with water, nor burning the refrigerant is appropriate; recovery is the correct and responsible method.