Checking For Leaks Using Fluorescent Leak Detector

Fluorescent Dye Leak Detector

PRECAUTIONS FOR FLUORESCENT DYE LEAK DETECTION
The fluorescent dye leak detector is not a replacement for an electronic refrigerant leak detector. The fluorescent dye leak detector should be used in conjunction with an electronic refrigerant leak detector (J-41995) to pinpoint refrigerant leaks.

For your safety and your customer's satisfaction, read and follow all manufacturer's operating instructions and precautions prior to performing the work.

CHECKING SYSTEM FOR LEAKS USING THE FLUORESCENT LEAK DETECTOR
1. Check A/C system for leaks using the UV lamp and safety glasses (J-42220) in a low sunlight area (area without windows preferable). Illuminate all components, fittings and lines. The dye will appear as a bright green/yellow area at the point of leakage. Fluorescent dye observed at the evaporator drain opening indicates an evaporator core assembly (tubes, core or TXV) leak.

2. If the suspected area is difficult to see, use an adjustable mirror or wipe the area with a clean shop rag or cloth, then check the cloth with the UV lamp for dye residue.

3. Confirm any suspected leaks with an approved electronic refrigerant leak detector.

4. After the leak is repaired, remove any residual dye using dye cleaner (J-43872) to prevent future misdiagnosis.

5. Perform a system performance check and verify the leak repair with an approved electronic refrigerant leak detector.


NOTE: Other gases in the work area or substances on the A/C components, for example, anti-freeze, windshield washer fluid, solvents and lubricants, may falsely trigger the leak detector. Make sure the surfaces to be checked are clean. Clean with a dry cloth or blow off with shop air.
Do not allow the sensor tip of the detector to contact with any substance. This can also cause false readings and may damage the detector.