Test Products International 753 - Manual (Page 3)

2. All LED's will illuminate YELLOW
indicating automatic zeroing at start up. The
GREEN ready light will then illuminate if
there is ample battery power. If the GREEN
light flashes RED it is necessary to change
the batteries.
3. Approach suspected leak areas with the
sensor until the tick begins to increase.
When the tick increases and the LED's
illuminate showing only RED in color, do not
move the sensor from the area, press the
RESET button and wait approximately 2
seconds for a stable tick to begin again.
The LED's will illuminate from GREEN to
RED indicating up to 14 levels of leakage.
When all RED LED's appear the
leakage is at its maximum level. The RESET
button must be pressed again.
4. To find very small leaks use the same
procedure as listed in paragraph 4, but use
the "Sen HI" mode. When this is selected all
7 RED LED's will
illuminate momentarily and the tick will be
faster prior to the GREEN ready light being
illuminated.
5. To reduce sensitivity press the "Sen LO"
button. When this is selected 4 RED LED's
will illuminate prior to the GREEN ready light
being illuminated.
6. If the left GREEN LED flashes between
GREEN and RED, 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
tightness and cleanliness. Cleaning the
sensor with alcohol is permitted as long as
the instrument is turned off.
9. If the instrument does not perform, replace
the sensor. Sensor replacement is
recommended annually.
10. To turn off press and release the ON/OFF
button.
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.