Dust/Chip Extraction; Starting Operation; Practical Advice - Bosch GWB 12V-10 Professional Notice Originale

14 | English
Firmly tighten the keyless chuck (2) by turning it by hand in
the direction of rotation ➋.

Dust/Chip Extraction

Dust from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one's
health. Touching or breathing-in the dust can cause allergic
reactions and/or lead to respiratory infections of the user or
bystanders.
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
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easily ignite.
Operation

Starting Operation

Inserting the battery
Use only original Bosch lithium-ion batteries with the
u
voltage stated on the type plate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
Note: The use of batteries unsuitable for your power tool can
lead to malfunctions or damage to the power tool.
Set the rotational direction switch (3) to the middle position
to avoid unintentionally switching it on. Insert the charged
battery (8) into the handle until you feel it engage and it is
flush with the handle.
Setting the rotational direction (see figure C)
The rotational direction switch (3) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (4) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (3) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (3) through to the right
stop.
Switching on/off
To start the power tool, press and hold the on/off switch
(4).
The lamp (1) lights up when the on/off switch (4) 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 (4).
Adjusting the Speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (4) to varying extents.
1 609 92A 4VC | (25.05.2020)
A light pressure on the on/off switch (4) results in a low rota-
tional speed. Increased pressure on the switch causes an in-
crease in speed.
Fully automatic spindle lock (Auto-Lock)
The drill spindle, and therefore the tool holder, are locked
when the on/off switch (4) is not pressed.
This enables screws to be screwed in even when the battery
(8) is empty and allows the power tool to be used as a
screwdriver.
Run-out brake
Upon releasing the on/off switch (4), the drill chuck is
slowed down, which prevents the application tool from con-
tinuing to rotate.
When driving in screws, you should therefore only release
the on/off switch (4) once the screw has been inserted flush
into the workpiece. This way, the head of screw will not pen-
etrate the workpiece.
Battery charge-control indicator
When the on/off switch (4) is pressed in halfway or com-
pletely, the battery charge-control indicator (6) indicates
the charge condition of the battery for several seconds. The
indicator consists of three green LEDs.
LEDs
3× continuous green light
2× continuous green light
1× continuous green light
1× flashing green light
Temperature-dependent overload protection
In normal conditions of use, the power tool cannot be over-
loaded. If the power tool is overloaded or the permitted bat-
tery temperature is exceeded, the electronics of the power
tool will switch off until the temperature returns to within the
optimum operating temperature range.
Protection against deep discharge
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
Angled Drill Head (see figure D)
The drill head can be locked in 5 different angle positions.
Push the release button (5) and swivel the tool head to the
required position. Then, let go of the release button (5)
again.
Before starting operation, check if the drill head is
u
locked in the respective angle position. This poses a
risk of injury.

Practical advice

Only apply the power tool to the screw when the tool
u
is switched off. Rotating application tools can slip off.
After working at a low speed for an extended period, you
should operate the power tool at the maximum speed for ap-
proximately three minutes without load to cool it down.
Capacity
≥66 %
≥33 %
<33 %
Reserve
Bosch Power Tools