Berner BACOT 12V STARLOCK Notice Originale page 22

To switch off the power tool, slide the on/off
switch (1) backwards so that "0" appears on the
switch.
Note: If the power tool shuts down automatically
because the battery is flat or overheated, switch
the power tool off using the on/off switch (1).
Charge the battery or let it cool down before
switching the power tool on again. Failure to do
so can damage the battery.
Preselecting the orbital stroke rate
You can even preselect the required orbital stroke
rate during operation using the orbital stroke rate
preselection thumbwheel (5).
The required orbital stroke rate is dependent on
the material and the work conditions and can be
determined using practical tests.
Orbital stroke rate level "6" is recommended for
sawing, cutting and sanding harder materials,
such as wood or metal; orbital stroke rate level
"4" is recommended for softer materials, such as
plastic.
Practical Advice
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Remove the battery from the power tool be-
u
fore carrying out work on the power tool (e.g.
maintenance, changing tool, etc.). The bat-
tery should also be removed for transport and
storage. There is risk of injury from unintention-
ally pressing the on/off switch.
Always wait until the power tool has come to
u
a complete stop before placing it down.
Note: Do not keep the ventilation slots (4) on the
power tool closed when working as this will re-
duce the service life of the power tool.
Operating principle
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The oscillating drive causes the application tool to
oscillate back and forth by 2.8° up to 20000 times
per minute. This enables precise work in the tight-
est of spaces.
Use a consistent, low contact
pressure when performing work;
otherwise, the performance will
be impaired and the application
tool may jam.
While working, move the power
tool back and forth to prevent the
application tool overheating and
jamming.
Sawing
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Use only undamaged saw blades that are in
u
perfect condition. Bent or dull saw blades can
22 | English
break, negatively influence the cut, or lead to
kickback.
When sawing lightweight materials, take into
u
account the statutory provisions and recom-
mendations of the material manufacturers.
Plunge cuts may only be applied to soft ma-
u
terials, such as wood, gypsum board, etc.
Before using HCS saw blades to saw into wood,
chipboard, building materials, etc., check these
saw blades for foreign objects, such as nails,
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screws, etc. Remove the foreign objects as re-
quired or use bi-metal saw blades.
Cutting
English
Note: When cutting wall tiles, please bear in mind
that the application tools are subject to high wear
if used for extended periods.
Sanding
The material removal rate and sanding result are
primarily determined by the choice of sanding
sheet, the preselected orbital stroke rate level and
the contact pressure.
Only immaculate sanding sheets achieve good
sanding performance and make the power tool
last longer.
Be sure to apply consistent contact pressure in
order to increase the lifetime of the sanding
sheets.
Excessively increasing the contact pressure will
not lead to increased sanding performance, rather
it will cause more severe wear of the power tool
and of the sanding sheet.
To sand corners, edges and hard-to-reach areas
accurately, you can also work with the tips alone
or with an edge of the sanding plate.
The sanding sheet may heat up significantly when
used to sand specific points rather than entire sur-
faces. Reduce the orbital stroke rate and contact
pressure and allow the sanding sheet to cool
down at regular intervals.
Do not use a sanding sheet for other materials
after it has been used to work on metal.
Use only original Berner-sanding accessories.
Always connect a dust extraction system for sand-
ing.
Sanding application table
The information about the grit of the sanding
sheet and the orbital stroke rate level in the fol-
lowing table are recommended values.
The best method for determining the best com-
bination while sanding or polishing is practical ex-
perimentation.
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