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"Live" wires/conductors can be detected easier when power consumers
(e.g., lamps, appliances) are connected to the wire/conductor being
sought and switched on. Wires/conductors with 110 V, 230 V and 400 V
(three-phase current) are detected with about the same scan capacity.
Under certain conditions (such as when behind metal surfaces or behind
surfaces with high water content), "live" wires/conductors cannot be
detected with certainty. These ranges can be recognised in the metal
detection function. When a measuring value is indicated all over a larger
range of the measuring indicator f, then the material is screening off elec-
trically and the scan for "live" wires/conductors is not reliable.
Wires that are not "live" can be found as metal objects with the detecting-
metal function. However, stranded cables are not indicated (contrary to
solid copper conductors).
Operating Instructions
B On condition of the principle, the measuring values can be
impaired through certain ambient conditions. These include,
e.g., the proximity of other equipment that produce strong
magnetic or electromagnetic fields, moisture, metallic building
materials, foil-laminated insulation materials or conductive
wallpaper. Therefore, please also observe other information sources
(e.g. construction plans) before drilling, sawing or routing into walls,
ceilings or floors.
Switching Off the Signal Tone
The signal tone can be switched on and off. For this, press the metal-detec-
tion button 6 and the wood-detection button 5 at the same time. When the
signal tone is switched off, the switched-off audio signal indicator j appears
on the display.
The signal tone setting is maintained after switching the measuring tool off
and on again.
Marking Objects
Detected objects can be marked as required. For this, remove the pencil
11 from the measuring tool and carry out the scan as usual. Once you have
found the limits or the centre of an object, simply mark the sought after
location through the marking opening 2.
"AutoCal" Calibration Indicator
When the check mark behind the "AutoCal" calibration indicator g
flashes over a longer period or if it is not displayed anymore, reliable scan-
ning is no longer possible. In this case, send in the measuring tool to an
authorised Bosch after-sales service agent. Exception: In the detecting
wooden objects' function, the "AutoCal" calibration indicator g goes out
as long as the "ZOOM" button 4 is not pressed.
1 609 929 J68 • 30.1.06
English–5
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