Würth BS 12-A Instrucciones De Servicio Originales página 16

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 (6) to the middle position to
avoid unintentionally switching it on. Insert the charged battery
(5) into the handle until you feel it engage and it is flush with
the handle.
Setting the rotational direction (see figure C)
Only operate the rotational direction switch (6)
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when the power tool is not in use.
The rotational direction switch (6) is used to change the rota-
tional direction of the power tool. However, this is not possible
while the on/off switch (7) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (6) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (6) through to the right
stop.
Preselecting the Torque
The torque presetting ring (2) can be used to preselect the re-
quired 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 (3) when the
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power tool is not in use.
You can preselect two speed ranges with the gear selector
(3).
First gear:
Low speed range; for working with a large drilling diameter or
for screwdriving.
Second gear:
High speed range; for working with a small drilling diameter.
If the gear selector switch (3) cannot be pushed all the way,
turn the drill chuck slightly with the drill.
Switching on/off
To start the power tool, press and hold the on/off switch (7).
The lamp (9) lights up when the on/off switch (7) 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 (7).
Adjusting the Speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (7) to varying extents.
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A light pressure on the on/off switch (7) 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 (7) is not pressed.
This enables screws to be screwed in even when the battery
(5) is empty and allows the power tool to be used as a screw-
driver.
Run-out brake
Upon releasing the on/off switch (7), the drill chuck is slowed
down, which prevents the application tool from continuing to
rotate.
When driving in screws, you should therefore only release the
on/off switch (7) once the screw has been inserted flush into
the workpiece. This way, the head of screw will not penetrate
the workpiece.
Battery charge-control indicator
When the on/off switch (7) is pressed in halfway or com-
pletely, the battery charge-control indicator (8) indicates the
charge condition of the battery for several seconds. The indic-
ator 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. In the event of heaving loading or the temperature
rising/falling outside the permitted battery temperature range,
the speed will be reduced. The power tool will not run at full
speed again until the permitted battery temperature has been
reached.
Practical advice
Only apply the power tool to the screw/nut
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when the 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.
When drilling into metal, only use sharpened HSS drills (HSS
= high-speed steel) which are in perfect condition. The Würth
accessory range guarantees appropriate quality.
Before screwing larger, longer screws into hard materials, it is
advisable to pre-drill a pilot hole with the core diameter of the
thread to approx. 2/3 of the screw length.
Capacity
≥66 %
≥33 %
<33 %
Reserve