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Working Advice - Bosch GMS 120 Professional Originalbetriebsanleitung

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Power Cable
The operating mode "Power cable" is suitable
only for detecting "live" conductors
(110–230 V).
Press button 8 to activate the operating mode
"Power cable". The illuminated ring 1 and indi-
cation 4 above button 8 light up green.
When a "live" conductor is detected, indication
f appears on the display 3. Move the measuring
tool repeatedly over the area to localise the
"live" conductor more precisely. After moving
over the "live" conductor several times, it can be
indicated very accurately. When the measuring
tool is very close to the conductor, the illuminat-
ed ring 1 flashes red and the audio signal beeps
swiftly.
Notes:
– "Live" conductors are indicated in any oper-
ating mode.
– "Live" conductors can be detected easier
when power consumers (e.g. lamps, ma-
chines) are connected to the sought conduc-
tor and switched on.
– Under certain conditions (such as below
metal surfaces or behind surfaces with high
water content), "live" conductors cannot
be securely detected. The signal strength of
a "live" conductor depends on the position of
the cable. Therefore, apply further measure-
ments in close proximity or use other infor-
mation sources to check if a "live" conductor
exists.
– Voltage-free conductors can be detected as
metal objects in the operation mode "Metal".
This does not apply for stranded conductors
(contrary to solid conductors or cable).
– Static electricity can lead to inaccurate indi-
cation of electric lines, e.g., over a large
range. To improve the indication, place your
free hand flat on the wall next to the measur-
ing tool, in order to remove the static elec-
tricity.
Bosch Power Tools

Working Advice

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 con-
ductive wallpaper or tiles. Therefore, please
also observe other information sources (e.g.
construction plans) before drilling, sawing or
routing into walls, ceilings or floors.
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 through the marking
hole 2.
Temperature Control
The measuring tool is equipped with a tempera-
ture control indicator, as accurate measure-
ments are only possible as long as the tempera-
ture within the measuring tool remains
constant.
When the temperature control indicator g lights
up, the measuring tool is not within the operat-
ing temperature range or was subject to large
variations in temperature. Switch the measur-
ing tool off and allow it to adjust to the ambi-
ent temperature before switching it on again.
Warning Function
When indicator b lights up on display 3 and indi-
cation 4 flashes above button 10, the measure-
ment must be restarted. Remove the measuring
tool from the wall and place it on the base ma-
terial at a different location.
When indicator b flashes on display 3, send the
measuring tool in the provided protective pouch
to an authorised customer services agent.
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