Q: What are the annual maintenance requirements for an A/C machine?
A: SAE certified machines require the desiccant filter to be changed after recycling 150 lbs of refrigerant. It is recommended to change in-line filters at this time as well. Aside from the filter, other maintenance items include an annual calibration and that the vacuum pump oil is changed at regular intervals. The service hoses and couplers should also be inspected regularly for wear, and for vacuum leaks not visible to the naked eye.
Information provided by: MAHLE Service Solutions
