Precautions For Handling Leak Detector

When performing a refrigerant leak check, use a J-41995 electronic refrigerant leak detector or equivalent. Ensure that the instrument is calibrated and set properly per the operating instructions.

The leak detector is a delicate device. In order to use the leak detector properly, read the operating instructions and perform any specified maintenance.

• 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. 
  Fig 1: Identifying J-41995 Electronic Refrigerant Leak Detector Tool Kit

  Courtesy of NISSAN MOTOR CO., U.S.A.

1. Position probe approximately 5 mm (3/16 in) away from point to be checked.
   Fig 2: Positioning Probe

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. When testing, circle each fitting completely with probe.
   Fig 3: Identifying Probe

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Move probe along component approximately 25 to 50 mm (1 to 2 in)/sec.
   Fig 4: Moving Probe Along Component

   Courtesy of NISSAN MOTOR CO., U.S.A.