Bosch GBH 18V-40 C Professional Manual Original página 20

20 | English
Certain dust, such as oak or beech dust, is considered carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the ma-
terials to be worked.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Operation
Start-up
Ensure that the cover (15) of the Bluetooth
u
Module GCY 42 is closed during operation. This will pre-
vent dust from getting in.
Setting the Operating Mode (see figure E)
The operating mode of the power tool is selected using the
mode selector switch (5).
– To change the operating mode, turn the mode selector
switch (5) to the required position.
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.
Position for hammer drilling
If the application tool does not start rotating
straight away, run the power tool slowly until
the application tool starts rotating.
Vario-Lock position for changing the chiselling
position
Position for chiselling
Status indications
Power tool status Meaning/cause
indicator (20)
Green Status OK
Yellow Critical temperature has been reached or re-
chargeable battery is almost empty
Red Power tool has overheated or rechargeable
battery is empty
1 609 92A 74B | (18.05.2022)
Switching On/Off
– If necessary, release the lock-on button (7) for the on/off
switch.
– To switch on the power tool, press the on/off switch (9).
The worklight (11) lights up when the on/off switch (9) is
lightly or fully pressed, allowing the work area to be illumin-
ated in poor lighting conditions.
– To switch off the power tool, release the on/off switch
(9).
For low temperatures, the power tool reaches the full ham-
mer/impact capacity only after a certain time.
Adjusting the Speed/Impact Rate
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (9) to varying ex-
®
Low Energy
tents.
Applying light pressure to the on/off switch (9) 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: .
Changing the chiselling position (Vario-Lock)
You can lock the chisel in 16 different positions, allowing
you to select the optimum working position for each task.
– Insert the chisel into the tool holder.
– Turn the mode selector switch (5) to the "drilling" posi-
tion.
– Turn the application tool to the required chisel position.
– Turn the mode selector switch (5) to the "chiselling" posi-
tion. With this, the tool holder is locked.
Chiselling with lock function
To chisel for extended periods without pressing the on/off
switch (9), lock the on/off switch in "chiselling" operating
mode.
– To lock the power tool, press the on/off switch (9) down
fully whilst simultaneously pressing the lock-on
switch (7).
– To switch the lock off, press the lock-on button (7) again.
User interface (see figure F)
The user interface (14) is used to select the working mode
and to indicate the status of the power tool.
Solution
–
Run the power tool at no load and allow it to
cool down, or replace or charge the battery
soon
Allow the power tool to cool down, or replace
or charge the battery
Bosch Power Tools