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

Checking should include

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

Process/Skill Questions:

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