EPA 608 Core · Dehydration & Evacuation · Medium
What is the primary purpose of evacuating a refrigeration system?
Answer: C. To remove non-condensables (air) and moisture.
- ATo remove old compressor oil.
- BTo flush out metal shavings.
- CTo remove non-condensables (air) and moisture.✓ Correct
- DTo increase the system's operating pressure.
Why C is right
Evacuation removes air (non-condensables) and boils off trapped moisture.
More Core questions
- What chemical is formed when moisture mixes with CFC or HCFC refrigerants?
- What tool is required to accurately measure a deep vacuum?
- What is the standard target vacuum level for system dehydration?
- What happens to the boiling point of water as system pressure drops in a vacuum?
- If a micron gauge rises to atmospheric pressure after the pump is off, what does it mean?
Go deeper with the study guide EPA 608 Evacuation Levels: The Required Vacuum by Appliance, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.