Title: Evacuate and charge a refrigeration circuit (new or contaminated system).
Course: Heating, Ventilation, Air Conditioning, and Refrigeration I (17056-I) > Section: Servicing and Maintaining Refrigeration Systems

Evacuation should include using a pressure gauge and a micron gauge and demonstrating the steps required when

- charging pressure to within +/- 1 psig
- charging to weight.

Process/Skill Questions:

- What evacuation methods should be used on a new or contaminated system?
- What tool is used to measure moisture?
- What is a contaminated system?