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Bosch GBH 18V-28 DC Manual

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22 | English
Using other batteries can lead to injuries and pose a fire
hazard.
– Set the rotational direction switch (5) to the middle posi-
tion to avoid unintentionally switching it on.
– Slide the battery (8) all the way into the battery bay .
Setting the Operating Mode
The operating mode of the power tool is selected using the
impact/mode selector switch(12).
– To change the operating mode, press the release
button(11) and turn the impact/mode selector
switch(12) until it clicks into the required position.
Note: Only change the operating mode when the power tool
is switched off. Otherwise, the power tool may become dam-
aged.
Position for hammer drilling into concrete or
stone
Position for drilling without impact in wood,
metal, ceramic and plastic and for screwdriv-
ing
Vario-Lock position for adjusting the chisel po-
sition
The impact/mode selector switch(12) will not
engage in this position.
Position for chiselling
Setting the Rotational Direction
The rotational direction switch (5) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (7) is being pressed.
uOnly operate the rotational direction switch(5) when
the power tool is not in use.
Always set the rotational direction to clockwise rotation for
hammer drilling, drilling and chiselling.
–Clockwise rotation: Push the rotational direction
switch(5) all the way to the left.
–Anticlockwise rotation: Push the rotational direction
switch(5) all the way to the right.
Note: If the rotational direction switch is in the middle posi-
tion, the on/off switch is blocked.
Switching On and Off
– To switch on the power tool, press the on/off switch (7).
The worklight (9) lights up when the on/off switch (7) is
lightly or fully pressed, allowing the work area to be illumin-
ated in poor lighting conditions.
When switching on the power tool for the first time, the start
may be slightly delayed as the power tool's electronic system
has to configure itself first.
For low temperatures, the power tool reaches the full ham-
mer/impact capacity only after a certain time.
– To switch off the power tool, release the on/off switch
(7).
Adjusting the Speed/Impact Rate
– Adjust the speed/impact rate of the power tool when it is
on by pressing in the on/off switch(7) to varying extents.
Applying light pressure to the on/off switch(7) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Overload clutch
uIf the application tool jams or snags, the power trans-
mission to the drill spindle will be interrupted. Always
hold the power tool firmly with both hands to with-
stand the forces this may create and adopt a position
with stable footing.
uSwitch the power tool off immediately and remove the
application tool if the power tool becomes blocked.
Switching on when the drilling tool is blocked may
cause high torque reactions.
Rapid shut-off (KickBack Control)
The rapid shut-off function (KickBack
Control) gives the user greater control
over the power tool and offers them bet-
ter protection than power tools that do
not have KickBack Control. The power
tool will switch off if it suddenly and un-
foreseeably rotates around the drilling
axis.
– To switch the tool back on, release the on/off switch(7)
and then press it again twice.
Rapid shut-off is indicated by flashing of the worklight(9) on
the power tool.
Vibration damping
The integrated vibration damping function re-
duces the generated vibrations by means of a
built-in counter oscillator.
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.
Deactivating the connectivity function
uWith the Bluetooth® Low Energy Module, the power
tool is equipped with a radio interface. Local operat-
ing restrictions, e.g. in aircraft or hospitals, must be
observed.
Note: The cover(10) can only be securely closed if the
Bluetooth® Low Energy Module and the button cell are situ-
ated in the power tool.
1 609 92A 80W | (05.07.2022) Bosch Power Tools
… 22 …


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