Bosch Truvo Original Instructions Manual page 24

24 | English
may compromise your contact with the floor. The floor must also be
earthed in order for live cables to be detected.
– The 50–60 Hz signal from the electricity cable must be stronger
along the cable than in its immediate vicinity. If the wall is very dry or
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 light-up ring (5) lights up red, the live cable
indicator (3) lights up white and an audio signal is emitted.
Switch off power consumers and make sure that live cables are de-
u
energised before drilling, sawing or milling into walls, ceilings or
floors. After performing any kind of work, check to ensure that ob-
jects placed on the substrate are not live.
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 (7) and the side marking aid (6). 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 light-up ring (5) 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.
1 609 92A 8B4 | (02.03.2023) Bosch Power Tools