Baier BDB 825 Mode D'emploi page 43

NOTE
When larger drilled depths are reached the
diamond drill core increasingly becomes sucked
into the hole by the connected dust extractor. This
effect 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
switches 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.
•
After every 10 cm drilled depth, remove the core
drill bit from the drill hole and remove the drill
dust on the drill bit; use a piece of soft wood or
plastic to carefully knock the diamond core drill
bit, to remove any drill dust stuck to it.
•
15 If the feed is too fast, the red LED (2) lights
up. Then, reduce the feed immediately until the
green LED (1) lights up again.
If this warning signal is ignored, i.e. the feed
is not reduced, the electronics switch off the
diamond drill on overload.
The drilling process can then be started and
continued as described above.
5.2.4 Ending the drilling process
NOTE
To avoid damage to the diamond segments, do
not switch off the diamond drill until the rotating
diamond core drill bit has been almost completely
removed from the masonry.
•
15 Release the ON / OFF switch (3), to switch
off the diamond drill.
•
Now pull the stopped diamond core bit out of the
drill hole.
•
Switch off the dust extraction.
Remove drill core
•
Through-hole:
NOTE
Knocks to the diamond core drill bit with hard
objects can deform or break it
f If the drill core is stuck in the diamond core
drill bit, knock the diamond core drill bit with
a soft piece of wood or plastic to loosen the
drill core.
•
Non through-hole (blind hole):
NOTE
Risk of fracture of the diamond core drill bit's
cutting segments and/or damage to the drill.
Never use the diamond core drill bit to break out
the drill core!
f
16 Use a suitable tool (e.g. chisel) to break
out the drill core in the wall.
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