Bosch Truvo Original Instructions Manual page 24

OBJ_BUCH-2841-002.book Page 24 Thursday, August 4, 2016 6:22 PM
24 | English
Cause
Signal LED 2 lights yellow or red over large measuring area on the
wall (warning of metal objects).
Many, closely spaced
metal objects
Building materials
containing metal or
reinforcing steel in
the concrete
Solid metal objects on
the back of the wall
Auto calibration not
successful
Signal LED 2 flashes red over a large measuring area on the wall
(warning of "live" cables).
Improper grounding
of the wall
* Therefore, please also observe other information sources (e.g. construction plans)
before drilling, sawing or routing into walls, ceilings or floors.
1 609 92A 3FC | (4.8.16)
Corrective Measure
Pay attention to the pitch of the signal sound to
differentiate between individual metal objects.
Metal objects that are too closely spaced, cannot
be detected separately.*
A reliable detection is not possible with metallic
building materials (e.g. foil-laminated insulation
materials, heat sinks).*
Detection will not be accurate in the presence of
solid metal objects (e.g. radiators).*
Perform a manual calibration.
With your free hand, touch the wall at a distance
of 20–30 cm from the measuring tool to ground
the wall.
Bosch Power Tools