Environmental Protection Agency (EPA) MVAC Certification

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the EPA MVAC Certification Exam with multiple-choice questions and detailed explanations. Boost your understanding and readiness for the EPA certification test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

To which percentage must a refillable refrigerant cylinder not be filled above?

The correct answer is: 80%

Refillable refrigerant cylinders are subject to strict safety regulations to prevent the risk of overfilling, which can lead to increased pressure and the potential for cylinder failure. The correct limit for filling these cylinders is 80 percent of their total volume. This safety margin allows for the expansion of the refrigerant due to temperature changes and helps to minimize the risks associated with excess pressure. This percentage is established by regulatory guidelines from organizations like the Department of Transportation (DOT) and is critical for maintaining safe operating conditions for the refrigerant systems. By keeping the fill level at or below 80 percent, technicians ensure that there is sufficient space in the cylinder for vapor expansion, reducing the likelihood of leaks or accidents during storage or transport.