Fluorescent Dye Detection

The location of leaks can be pinpointed by the bright yellow-green glow of the fluorescent dye under a UV lamp. Since more than one leak can exist, make sure to inspect each component, line and fitting in the refrigerant system for a leak.

1. Check for leaks using a Rotunda-approved UV lamp.
   • Inspect all components, lines and fittings of the refrigerant system.
   Fig 1: Inspecting Lines And Fittings Of Refrigerant System Using Rotunda-Approved UV Lamp

   Courtesy of FORD MOTOR CO.
2. If a leak is found, recover the refrigerant. For additional information, refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING .
3. Repair the refrigerant system leak(s).
4. Evacuate and charge the refrigerant system. For additional information, refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING .
5. After the leak(s) is/are repaired, remove any traces of fluorescent dye with a general purpose oil solvent.
6. Verify the repair by running the vehicle for a short period of time and rechecking the area of the leak with a Rotunda-approved UV lamp.
   Fig 2: Rechecking Area Of Leak With A Rotunda-Approved UV Lamp

   Courtesy of FORD MOTOR CO.