Baier Elektrowerkzeuge BDB 829 Traduction De L'original Du Mode D'emploi page 43

NOTE
To avoid damage to the diamond segments, do not
switch off the dry diamond drill until the rotating
diamond core drill bit has been completely
removed from the masonry.
•
16 Pull the diamond core drill bit out of the
centring drill hole and release the ON / OFF
switch (1), to switch off the dry diamond drill.
•
After the diamond core drill bit has come to a
stop, remove the centring bit from the core drill
bit.
Finish drilling the hole
WARNING
Risk of injury due to falling drill cores.
Î If drilling openings through objects, always
check the rooms below and block off the dan-
ger zone. Use formwork to secure the drill core
against falling.
NOTE
The diamond core drill bit can become blunt or
damaged due to overheating.
The feed may only be as high as the diamond
core drill bit can wear away the material. You must
therefore not exert too large a force on the dia-
mond core drill bit and avoid canting.
A suitable dust extractor must be connected to the
dry diamond drill.
•
Leave the dust extractor connected to the ex-
traction tube switched on.
•
4 Switch the machine's soft impact feature
on depending on the material to be drilled (see
page 41).
NOTE
Switching the soft impact feature on or off while
the machine is running can cause damage to the
machine.
Wait for the machine to completely stop.
•
Feed the diamond core drill bit into the pre-cen-
tred hole.
•
Switch on the dry diamond drill by pressing
16
the ON / OFF switch (1).
•
Continue drilling with a uniform, light feed
pressure.
NOTE
When larger drilled depths are reached the dia-
mond drill core increasingly becomes sucked into
the hole by the connected dust extractor. This ef-
fect is due to the increasing tightness of the suction
(vacuum) with increasing drilled depth. This suction
force increases the feed force of the drill and at
larger drilled depths can rise so far that the speed
of the drill drops too far and the electronics switch-
es off (overload). In this case, stop pressing the
drill against the wall with the handles, and instead
hold it lightly against the suction force.
•
Pull back the diamond core drill a little now and
again so that the drill dust can be removed.
•
16 If the feed is too fast, the red LED (2) lights
up. Then, reduce the feed immediately until the
green LED (3) lights up again.
If this warning signal is ignored, i.e. the feed is
not reduced, the electronics switch off the dry
diamond drill on overload.
The drilling process can then be started and
continued as described above.
NOTE
The dry diamond drill also switches off if the dia-
mond core drill bit has insufficient cutting power. In
this case, check whether the diamond core drill bit
has become blunt (Page 48, "Handling diamond
core drill bits").
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