Environmental Protection Agency (EPA) MVAC Certification

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Study for the EPA MVAC Certification. Dive into key environmental regulations with multiple choice questions, hints, and detailed explanations. Get ready to excel on your exam!

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What is the required evacuation level for external recovery tanks before they can be put in service?

20 inches
27 inches
30 inches
50 inches

The correct answer is: 27 inches

The correct evacuation level for external recovery tanks is 27 inches of mercury (inches Hg) of vacuum. Achieving this level ensures that the system has effectively removed moisture and contaminants from the refrigerant, which is essential for proper recovery and recycling practices in compliance with EPA regulations. A vacuum level of 27 inches Hg indicates that the system has been evacuated to a point where the remaining pressure is low enough to minimize the risk of allowing air and moisture back into the recovery tank, which could compromise the integrity of the refrigerant and the effectiveness of the recovery process. While the other options present different vacuum levels, only 27 inches meets the standard requirement set forth by regulations. Levels that are lower or significantly higher than this are neither feasible nor compliant for safe operation. Recognizing the importance of proper evacuation levels is critical for anyone working in the area of refrigerant recovery and management, ensuring both environmental protection and system efficiency.