Bosch Professional GWS 18V-15 C Original Instructions Manual page 15

Power tool status Meaning/cause
indicator (30)
Illuminated red Power tool has overheated or battery is empty Allow the power tool to cool down, or replace
Flashing red Kickback shutdown, restart protection or im-
pact shutdown has been triggered
Flashing blue Power tool is connected to a mobile device or
settings are being transferred
Connectivity functions
In conjunction with the Bluetooth® Low Energy Module
GCY 42, the following connectivity functions are available
for the power tool:
– Registration and personalisation
– Status check, output of warning messages
– General information and settings
– Management
Read the corresponding operating instructions for informa-
tion about the Bluetooth® Low Energy Module GCY 42.
The connection of the power tool with the app must be con-
firmed by pressing the speed preselection button (27) on
the user interface (4). The app requests this when connect-
ing.
Practical advice
With the Bluetooth® Low Energy Module GCY 42, the
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power tool is equipped with a radio interface. Local
operating restrictions, e.g. in aircraft or hospitals,
must be observed.
In areas where the Bluetooth® wireless technology is
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not allowed to be used, the Bluetooth® Low Energy
Module GCY 42 and the button cell must be removed.
Exercise caution when cutting slots in structural walls;
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see the "Information on structural design" section.
Clamp the workpiece if it is not secure under its own
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weight.
Do not load the power tool so heavily that it comes to a
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stop.
If the power tool has been subjected to a heavy load,
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continue to run it at no-load for several minutes to
cool down the accessory.
Do not use the power tool with a cut-off stand.
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Do not touch grinding and cutting discs until they have
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cooled down. The discs can become very hot while work-
ing.
If the power tool becomes electrostatically charged, the
built-in electronics will switch the power tool off. Press the
on/off switch (5) again to restart the power tool.
Rough grinding
Never use cutting discs for rough grinding.
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The best rough grinding results are achieved with a set angle
of 30° to 40°. Move the power tool back and forth with mod-
erate pressure. This will ensure that the workpiece does not
Bosch Power Tools
Solution
or charge the battery
Turn the power tool off and on again
–
become too hot or discolour and that grooves are not
formed.
Flap disc
The flap disc (accessory) enables you to machine curved
surfaces and profiles.
Flap discs have a considerably longer service life, lower
noise levels and lower sanding temperatures than conven-
tional grinding discs.
Cutting metal
Always use the protective guard for cutting (15) when
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cutting bonded abrasives.
When carrying out abrasive cutting, use a moderate feed
that is suited to the material being machined. Do not exert
pressure on the cutting disc and do not tilt or swing the
power tool.
Do not attempt to reduce the speed of a cutting disc coming
to a stop by applying pressure from the side.
Cutting stone
Provide sufficient dust extraction when cutting stone.
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Wear a dust mask.
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The power tool may be used only for dry cutting/grind-
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ing.
For best results when cutting stone, use a diamond cutting
disc.
When cutting especially hard materials such as concrete
with a high pebble content, the diamond cutting disc can
overheat and become damaged as a result. This is clearly in-
dicated by circular sparking, rotating with the diamond cut-
ting disc.
If this happens, stop cutting and allow the diamond cutting
disc to cool down by running the power tool for a short time
at maximum speed with no load.
Working noticeably slower and with circular sparking indic-
ate that the diamond cutting disc that has become dull. You
English | 15
The power tool must always
work in an up-grinding mo-
tion. Otherwise there is a
risk that it will be pushed
uncontrolled out of the cut.
For best results when cut-
ting profiles and rectangular
tubing, start at the smallest
cross section.
1 609 92A 5RK | (07.10.2020)