Bosch Truvo Notice Originale page 21

OBJ_BUCH-2841-002.book Page 21 Thursday, August 4, 2016 6:22 PM
After moving over the surface the first time, the posi-
tion of the metal object is only roughly indicated. If you
move the measuring tool over the metal object several
times, the object detection will become increasingly
precise. After moving over the metal object several
times (without lifting the measuring tool from the base
material), its position can be indicated very accu-
rately: if the signal LED 2 illuminates red and the signal
tone sounds, the metal object is below the sensor area. When the pitch of
the signal tone is highest, the metal object is located below the centre of
the sensor.
Scanning for "Live" Wires
The measuring tool indicates wires, which carry voltage between 110 V
and 240 V and a frequency corresponding to the widely used standard
(AC with 50 or 60 Hz). Other wires (carrying DC, higher/lower frequency
or voltage) as well as non-"live" wires/conductors cannot be found relia-
bly, but are possibly indicated as metal objects.
The detection for "live" wires/conductors takes place automatically with
every measurement. When a "live" wire/conductor is detected, the signal
LED 2 flashes red and an intermittent signal tone sounds with rapid tone
sequence. Move the measuring tool repeatedly over the surface to locate
the "live" wire/conductor more precisely. After moving over the surface
several times, the position of the "live" wire/conductor can be indicated
very accurately.
It is easier to find live cables if electricity consumers (e.g. lights, appliances)
are connected to the cable being searched for and are switched on. Switch
off electricity consumers before drilling, sawing or milling into the wall.
Note: Always ensure that you hold the measuring tool firmly without
gloves to enable a good grounding. Also ensure that ladders/scaffolding
must be grounded. Avoid ladders/scaffolding whose supports have plas-
tic caps underneath them. Do not wear insulating footwear.
It may not be possible to find live cables in certain conditions (e.g. behind
metal surfaces, behind surfaces that are very dry or very damp). If the in-
dicator LED 2 lights up yellow or red over a large area, the material is elec-
trically shielded and you will not be able to find live cables accurately.
Bosch Power Tools
English | 21
1 609 92A 3FC | (4.8.16)