Wurth Master BS 10-A Instructions D'emploi page 13

OBJ_BUCH-831-001.book Page 13 Thursday, November 27, 2008 8:58 AM
Reversing the Rotational Direction
(see figure F)
The rotational direction switch 6 is used to reverse
the rotational direction of the machine. However,
this is not possible with the On/Off switch 7 actu-
ated.
Right Rotation: For drilling and driving in screws,
push the rotational direction switch 6 left to the stop.
Left Rotation: For loosening and unscrewing
screws and nuts, press the rotational direction switch
6 through to the right stop.
Setting the Torque
With the torque presetting ring 2 the required torque
setting can be preselected in 20 steps. With the cor-
rect setting, the insert tool is stopped as soon as the
screw is screwed flush into the material or when the
adjusted torque is reached. The safety clutch is deac-
tivated in the " " position, e. g. for drilling.
Select a higher setting or switch to the "
when unscrewing screws.
Gear Selection, Mechanical
❏ Actuate the gear selector 3 only when the
machine is at a standstill.
Two speed ranges can be preselected with the gear
selector 3.
Gear I:
Low speed range; for screwdriving or working with
large drilling diameter.
Gear II:
High speed range; for working with small drilling
diameter.
If the gear selector 3 cannot be pushed through to
the stop, lightly turn the drill chuck with drill.
Switching On and Off
To start the machine, press the On/Off switch 7
and keep it pressed.
The light 8 is lit when the On/Off switch 7 is slightly
or completely pressed in and permits to light the
work area when the lighting conditions are bad.
To switch off the machine, release the On/Off
switch 7.
Adjusting the Speed
The speed of the switched on power tool can be var-
iably adjusted, depending on how far the On/Off
switch 7 is pressed.
Light pressure on the On/Off switch 7 results in a
low rotational speed. Further pressure on the switch
results in an increase in speed.
27.11.08
Run-on Brake
When the On/Off switch 7 is released, the chuck
brakes to a stop, thus preventing the run-on of the
tool.
When driving in screws, wait until the screw is
screwed in flush with the material and then release
the On/Off switch 7. By doing so, the head of the
screw does not penetrate into the material.
Temperature Dependent Overload
Protection
When using as intended for, the power tool cannot
be subject to overload. When the load is too high or
the allowable battery temperature range of 0–70 °C
is exceeded, the speed is reduced. The power tool
will not run at full speed until reaching the allowable
battery temperature.
" symbol
❏ Apply the power tool to the screw only
when it is switched off. Rotating tool inserts
can slip off.
Tips
After longer periods of working at low speed, allow
the machine to cool down by running it for approx.
3 minutes at maximum speed with no load.
For drilling in metal, use only perfectly sharpened
HSS drill bits (HSS=high-speed steel). The appropri-
ate quality is guaranteed by the Würth accessories
program.
Before screwing larger, longer screws into hard
materials, it is advisable to predrill a pilot hole with
the core diameter of the thread to approx.
screw length.
Working Advice
2
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3
English–13
of the