Title: Locate a leak in an uncharged refrigerant circuit, using nitrogen pressurization or trace gas.
Course: Heating, Ventilation, Air Conditioning, and Refrigeration I (17056-I) > Section: Servicing and Maintaining Refrigeration Systems

Locating a leak in a system should include using dry nitrogen and observing safety procedures.

Process/Skill Questions:

- What is the name of the refrigerant used for a trace charge with nitrogen?
- Can a trace charge be vented into the atmosphere? Why, or why not?
- Why is a regulator needed?