Bosch Truvo Original Instructions Manual page 23

poorly earthed, the signal will be the same strength throughout the wall.
This will result in the measuring tool indicating that it has found a signal
over a large area, but it will not be able to detect the exact location of the
cable. In this instance, it may be helpful to place your free hand on the
wall 20−30 cm from the measuring tool in order to conduct the signal
away from the wall.
If a live cable is found, the indicator light (3) flashes red and a pulsating au-
dio signal will sound at a fast rate.
Working Advice
Marking objects
If required, detected objects can be marked. Perform a measurement as
usual.
Once you have found the boundaries or the centre of an object, mark the
sought location at the top marking aid (5) and the side marking aid (4). Con-
nect the points with a vertical and horizontal line. The boundary or the
centre of the object is located where the lines intersect.
Recalibration
Manually recalibrate the measuring tool if the indicator light (3) continues to
light up yellow or red even though there is no metal near the measuring tool.
– Switch on the measuring tool using the on/off switch (2).
– Remove a battery from the measuring tool whilst it is switched on.
– Switch off the measuring tool using the on/off switch (2) after the battery
has been removed.
– Reinsert the battery into the measuring tool. Ensure that the polarity is
correct.
– Remove all objects near the measuring tool (including watches or metal
rings) and hold the measuring tool in the air.
– Switch the measuring tool on and off again within 3 s using the on/off
switch (2). The indicator light (3) will flash red slowly for the 3 s to indic-
ate readiness for calibration.
– Switch the measuring tool back on within 0.5 s. The calibration will start
and take roughly 6 s. During calibration, the indicator light (3) flashes
green at a fast rate. Once the indicator light lights up green continuously,
the calibration is complete and the measuring tool is ready to use.
Bosch Power Tools
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1 609 92A 6H5 | (30.06.2021)