EPA 608 Type III · Recovery Techniques · Hard
How should compressor oil be prepared before removal from a low-pressure chiller?
Answer: C. It should be heated to 130 degrees F.
- AIt should be chilled to 32 degrees F.
- BIt should be mixed with acid scavengers.
- CIt should be heated to 130 degrees F.✓ Correct
- DIt must be pressurized to 15 psig.
Why C is right
Heating the oil to 130F boils off trapped liquid refrigerant, leaving only the oil to be drained safely.
More Type III questions
- Why must evaporator and condenser water pumps run when recovering refrigerant from a low-pressure chiller?
- What is the most efficient way to begin recovering refrigerant from a low-pressure chiller?
- What must be done after recovering the liquid from a low-pressure chiller?
- What is the standard evacuation level for a low-pressure appliance?
- The Type III evacuation level of 25 mm Hg absolute equals about how many microns?
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.