Bosch 0 603 9A3 100 Manual Original página 15

Changing the tool (see figure B)
The drill spindle is locked when the on/off switch (12) is not
pressed. This makes it possible to change the application
tool in the drill chuck quickly, conveniently and easily.
Open the keyless chuck (2) by turning it in the direction of
rotation ➊ until the tool can be inserted. Insert the tool.
Firmly tighten the sleeve of the keyless chuck (2) by turning
it by hand in the direction of rotation ➋ until it audibly clicks
into place. This will automatically lock the drill chuck.
The lock will disengage again if you turn the sleeve in the op-
posite direction to remove the tool.
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
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 (11) to the middle posi-
tion 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.
Set the rotational direction (see figure C)
The rotational direction switch (11) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (12) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (11) through to the left stop.
The rotational direction indicator for right rotation
(5) lights up when the on/off switch (12) is
pressed and the motor is running.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (11) through to the
right stop.
The rotational direction indicator for left rotation
(6) lights up when the on/off switch (12) is
pressed and the motor is running.
Bosch Power Tools
Preselecting the Torque
The torque presetting ring (3) can be used to preselect the
required torque in 20 stages. When the correct setting is
used, the application tool will be stopped when the screw is
driven flush into the material or once the set torque has been
reached. In position the overload clutch is deactivated,
e.g. for drilling.
When unscrewing screws, you can select a higher setting or
set the tool to the symbol.
Mechanical gear selection
Only operate the gear selector (4) when the power
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tool is not in use.
You can preselect two speed ranges with the gear selector
(4).
Gear I:
Low speed range; for screwdriving or working with a large
drilling diameter.
Gear II:
High speed range; for working with a small drilling diameter.
If the gear selector switch (4) cannot be pushed all the way,
turn the tool holder (1) with the application tool slightly.
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 pro-
tective circuit: The application tool no longer rotates.
Switching on/off
To start the power tool, press and hold the on/off switch
(12).
The lamp (9) lights up when the on/off switch (12) 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 (12).
Practical advice
Only apply the power tool to the screw/nut when the
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tool is switched off. Rotating tool inserts 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.
Maintenance and Service
Maintenance and Cleaning
Remove the battery from the power tool before carry-
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ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
English | 15
1 609 92A 4WD | (15.03.2019)