Title: (Optional) Check for contamination of refrigerant and lubricant.
Course: Diesel Equipment Technology III (20107-III) > Section: HVAC: Servicing the Air Conditioning (A/C) System and Components, General (EPA 609 required)

Checking should include

- using electronic tools and visual inspection
- verifying contamination of the HVAC system
- determining any needed action.

ASE 2: VI. Heating, Ventilation, and Air Conditioning: E. Refrigerant Recovery, Recycling, and Handling

Process/Skill Questions:

- What failure does metal in the oil indicate?
- What dangerous contaminants can be found in refrigerant?