EPA 608 Type I · Recovery Techniques · Hard
What helps release trapped refrigerant from compressor oil during recovery?
Answer: A. Heating the compressor and striking it with a mallet.
- AHeating the compressor and striking it with a mallet.✓ Correct
- BChilling the compressor to sub-zero temperatures.
- CAdding more compressor oil to the system.
- DPulling a vacuum to 500 microns immediately.
Why A is right
Refrigerant gets trapped in the compressor oil. Turning on the compressor heater (or heating it) and striking it with a rubber mallet helps boil off and release the trapped refrigerant.
More Type I questions
- System-dependent (passive) recovery from a small appliance typically captures the refrigerant in what?
- Before recovering refrigerant from a small appliance, where do you first check which refrigerant it holds?
- Where is a piercing valve typically installed on a household refrigerator?
- Why should a piercing access valve NOT be left permanently on a system?
- How many access valves are needed if the compressor operates?
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.