Leak Searching Tips
1. Take care not to plug the sensor housing tip by dragging it
over dirty or wet surfaces. If the area is particularly dirty, or
condensate (moisture) is present, it should be wiped off with
a dry shop towel. No cleaners or solvents should be used,
since the detector may be sensitive to their ingredients.
Visually trace the entire refrigerant system and look for signs
of air conditioning lubricant leakage, damage, and corrosion
on all lines, hoses, and components. Each questionable area
should be carefully checked with the detector: controls,
service ports with caps in place, brazed or welded areas, and
areas around attachment points and hold-down on lines and
components.
2. Always follow the refrigerant system around in a continuous
path so that no areas of potential leaks are missed. If a leak is
found, always continue to test the remainder of the system.
3. At each area checked, the probe should be moved around the
location at a rate no more than 1-2 in / sec. (25 to 50mm / sec.),
and no more than .2" (5mm) from the surface, completely
around the position. Slower and closer movement of the
probe greatly improves the likelihood of finding a leak.
4. An apparent leak shall be verified at least once by blowing
shop air into the area of the suspected leak and repeating the
check of the area. In cases of very large leaks, blowing out the
area with shop air often helps locate the exact position of the
leak.
5. Following any service to the refrigerant system, and any other
service that disturbs the refrigerant system, a leak test of the
repair and of the service ports of the refrigerant system should
be done.
7
OPERATION
