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Locating Leaks
NOTE:
Bumping the accessory probes or nose piece into objects while seeking leaks
will cause false alarms. Leaks will be indicated by an a beeping audio alarm
and flashing LEDs. Disregard occasional short alarms.
W A R N I N G
Always keep clear of hot and/or moving engine and machinery parts.
Damage or injury could result.
1. Press the Power button to turn the Whisper on. The Whisper will turn on in maximum
sensitivity. The instrument will not beep or tick in an idle state but the "Battery" LED
will illuminate to indicate the detector has adequate power. When the "Battery" LED
flashes, the batteries are nearing the end of their useful life and will soon need to be
replaced.
2. Point the Whisper in the direction of the suspected leak and scan the area by making
a slow "X" (a vertical and horizontal type sweeping motion) while keeping the nose
piece (or rubber extension probe) pointed in the general direction of the suspected
leak.
3. If you are using the Whisper without headphones, the Whisper will beep when it
detects an ultrasonic disturbance. If you are using the unit with headphones, the
Whisper will make a variety of different noises due to its heterodyne feature. (See
"Heterodyne Feature"
gradually decrease sensitivity by slowly dragging your finger down the touch pad until
the beeping stops. The sensitivity level will be indicated briefly by the number of
illuminated LEDs next to the touch pad.
4. Move closer to the suspected leak, continuing the sweeping pattern and narrowing
the range of the sweep by making smaller patterns until the ticking once again
increases. This will lead to the location of the disturbance. If an exact location is
desired, attach the flexible rubber extension to the probe and repeat step 3.
5. Repair all leaks as located and repeat scan.
Heterodyne Feature
The Whisper features heterodyne capability, which converts the ultrasonic frequencies
detected by the instrument to sounds that can be heard by the human ear. This allows
you to more easily isolate the ultrasonic source.
Simply plug the included headphones into the jack on the right side of the Whisper to
enable heterodyne capability. Dragging your finger upwards/downwards on the
sensitivity touch pad will increase/decrease the volume of the headphones.
for more information.) To isolate the ultrasonic disturbance,
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