Bosch GBH 18V-34 CF Professional Notice Originale page 11

Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Operation
Start-up
Ensure that the cover (13) of the Bluetooth
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Module GCY 42 is closed during operation. This will pre-
vent dust from getting in.
Inserting the Battery
Use only original Bosch lithium-ion batteries with the
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voltage stated on the type plate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
– Push the lock-on button (9) to protect the power tool
against accidental switching on.
– Slide the charged battery (12) into the power tool until
the battery is securely locked.
Setting the Operating Mode (see figure I)
You can use the combi switch (7) to select the operating
mode of the power tool.
Note: Only change the operating mode when the power tool
is switched off. Otherwise, the power tool may become dam-
aged.
Note: If you switch to a different operating mode while the
on/off switch is locked, the power tool will switch off.
– To change the operating mode, turn the combi switch (7)
to the required position until you hear it click into place.
Position for hammer drilling into concrete or
stone
GBH 18V-34 CF with keyless quick-change
chuck (1): Position for drilling without impact
in wood, metal, ceramic and plastic (clock-
wise)
Anti-clockwise position for loosening the ap-
plication tool from the workpiece
Bosch Power Tools
Vario-Lock position for changing the chiselling
position.
Position for chiselling
Switching On/Off
– If necessary, release the lock-on button (9) for the on/off
switch.
– To switch on the power tool, press the on/off
switch (11).
The lamp lights up when the on/off switch (11) is lightly or
fully pressed, meaning that the work area is illuminated in
poor lighting conditions.
– To switch off the power tool, release the on/off switch
(11).
Adjusting the Speed/Impact Rate
®
Low Energy
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (11) to varying ex-
tents.
Applying light pressure to the on/off switch (11) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
You can also control the speed on the user interface and/or
via a smartphone app (see "Selecting the working mode",
page 13).
Changing the chiselling position (Vario-Lock)
You can lock the chisel in 16 different positions, so you can
select the optimum working position for each task.
– Insert the chisel into the tool holder.
– Turn the combi switch (7) to the "Vario-Lock" position.
– Turn the application tool to the required chisel position.
– Turn the combi switch (7) to the "chiselling" position.
With this, the tool holder is locked.
Chiselling with lock function
To chisel for extended periods without pressing the on/off
switch (11), lock the on/off switch in "chiselling" operating
mode.
– To lock the power tool, press the on/off switch (11)
down fully whilst simultaneously pressing the lock-on
switch (9).
– To switch the lock off, press the lock-on button (9) again.
Note: If you switch to a different operating mode while the
on/off switch is locked, the power tool will switch off.
Overload clutch
If the application tool jams or snags, the power trans-
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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.
English | 11
1 609 92A 5JT | (13.10.2020)