Owner's Manual

MTC-86
REFRIGERANT LINES
Checking Refrigerant Leaks
EJS001BS
PRELIMINARY CHECK
● Perform a visual inspection of all refrigeration parts, fittings, hoses and components for signs of A/C lubri-
cant leakage, damage and corrosion. A/C lubricant leakage may indicate an area of refrigerant leakage.
Allow extra inspection time in these areas when using either an electronic refrigerant leak detector or fluo-
rescent dye leak detector.
● If dye is observed, confirm the leak with an approved electronic refrigerant leak detector. It is possible a
prior leak was repaired and not properly cleaned.
● When searching for leaks, do not stop when one leak is found but continue to check for additional leaks at
all system components and connections.
● When searching for refrigerant leaks using an electronic leak detector, move the probe along the sus-
pected leak area at 25 - 50 mm (1 - 2 in) per second and no further than 1/4 inch from the component.
NOTE:
Moving the electronic leak detector probe slower and closer to the suspected leak area will improve
the chances of finding a leak.
Electronic Refrigerant Leak Detector EJS001BT
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 detec-
tor properly, read the operating instructions and perform any speci-
fied 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.
1. Position probe approximately 5 mm (3/16 in) away from point to
be checked.
2. When testing, circle each fitting completely with probe.
SHA196FA
SHA707EA
SHA706E