Just Better LD-2500 Hunter Leak Detector - Manual (Page 5)

Figure 2: Installing the sensor
Using the LD-2500 HUNTER
HOW TO FIND LEAKS
NOTE: A sudden whipping of the leak detector probe or blowing into the
sensor tip will affect the air fl ow over the sensor and cause the instrument
to alarm.
1. Place tip of the leak detector probe as close as possible to the site of
the suspected leak. Try to position the probe within 1/4 inch (5 mm) of
the possible leak source.
2. Slowly (approximately 1 to 2 inches per second (25 to 50 mm/sec))
move the probe past each possible leak point.
NOTE: It is important to move the tip of the probe past the leak.
If held on a leak, the auto zero feature will gradually zero out the
leak signal.
3. When the unit detects a leak, it will emit a different tone and the LED
fl ash rate will increase to signal the leak.
4. When the LD-2500 HUNTER signals a leak, pull the probe away from
the leak for a moment, then bring it back to pinpoint the location. If the
leak is large, set the sensitivity switch to LOW, by quickly pressing the
main control button, to make it easier to fi nd the exact site of the leak.
5. Return sensitivity to HIGH before searching for additional leaks
6. When you have fi nished leak-testing, turn OFF the instrument
WARNING
DO NOT OPERATE THIS INSTRUMENT IN THE PRESENCE OF GASOLINE,
NATURAL GAS, PROPANE, OR IN ANY OTHER COMBUSTIBLE ATMO-
SPHERES.
How to Change the Filter
The foam fi lter at the probe tip should be replaced if it becomes plugged
with water or oil. To replace the fi lter, simply pull out the old fi lter (with a
paper clip or similar device). Then push in the new fi lter.