ample battery power. The RED LED may
flicker and the tick may sound during the
warm-up. To silence the tick, rotate the thumb
wheel fully counterclockwise.
3. Adjust the TICK ADJUST by rotating the thumb
wheel in a clockwise direction until a uniform
ticking sound is heard. The RED light will flash
at the same time the tick sounds.
4. Approach suspected leak areas with the sensor
until the tick begins to increase. When the tick
increases, do not move the sensor from the area,
rotate the TICK ADJUST slightly counterclock-
wise to slow the ticking and continue to
approach the suspected leak area with the sen-
sor. Continue to slow the tick until the location
of the leak is found. If the tick stops, the con-
centration level has decreased. Movebackin the
opposited direction to find the leak again.
5. To find very small leaks use the same procedure
as listed in paragraph 4, but use the HI mode.
6. If the GREEN LED changes to orange color,
change the batteries.
7. An earphone can be plugged into the earphone
jack when using the instrument in noisy
environments.
8. If the tick is erratic, check the sensor for tight-
ness and cleanliness. Cleaning the sensor with
alcohol is permitted as long as the instrument is
turned off.
Warning: Turn unit off before cleaning or
replacing the sensor. Failure to do so may
result in a mild electrical shock.
9. If the instrument does not perform, replace the
sensor. Sensor replacement is recommended
annually.
Battery Replacement
1. Remove the battery compartment door from the
bottom of the handle by sliding the door away
from the front side of the instrument.
2. Remove the batteries and replace by sliding the
negative (-) end of the batteries in first.
3. Replace the battery door by sliding the door into
the slots provided in the handle and allow it to
snap into place.
4. For best performance use a quality alkaline bat-
tery.
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