Title: Inspect condition of refrigerant oil removed from AC system; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Heating, Ventilation, and Air Conditioning (HVAC): General-Air Conditioning (AC) System Diagnosis and Repair

Inspection should include visually checking the oil for presence of metal particles and servicing or changing the oil, as needed.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VII. Heating, Ventilation, and Air Conditioning (HVAC)
A. General: Air Conditioning (A/C) System Diagnosis and Repair
Task 7

Process/Skill Questions:

- What tools and equipment are used to inspect the condition of refrigerant oil removed from the system?
- What are the proper procedures for measuring the amount of oil and inspecting it?
- How much oil should be returned to the system?