EPA 608 Type III · Refrigeration Fundamentals · Medium
Where does the purge unit take its suction from?
Answer: B. The top of the condenser.
- AThe bottom of the evaporator.
- BThe top of the condenser.✓ Correct
- CThe compressor oil sump.
- DThe liquid line.
Why B is right
Non-condensables (like air) accumulate at the top of the condenser, which is where the purge unit connects.
More Type III questions
- What does frequent operation of the purge unit indicate?
- Why must low-pressure chillers be designed to be completely airtight?
- Which HCFO refrigerant is replacing R-123 in new low-pressure chillers?
- Which of the following is considered a low-pressure refrigerant?
- Where is the rupture disc typically located on a low-pressure chiller?
Go deeper with the study guide EPA 608 Core Exam: Study Guide for 2026, 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.