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6.5
Switching on the dry diamond
drill and drilling
•
Before starting up the dry diamond drill, check
all the points described in the "Before starting
work" chapter (see page 40 ff.).
•
Select the core drill bit and fit (see "5.1 Fitting or
replacing the diamond drill bit" on page 41).
•
Switch off soft impact feature (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.
•
3
Set the speed depending on the drill bit diam-
eter (see technical specifications Page 38) at
the gear change knob.
NOTE
Changing gear while the machine is running can
cause damage to the drill.
Wait for the machine to completely stop.
•
16
Switch on the dry diamond drill and wait
until the working speed has been reached –
green LED (3) lights up.
•
Switch on dust extraction with continuous
operation.
•
Turn the capstan handle in a clockwise direc-
tion to slowly immerse the diamond core bit into
the material to be drilled – the green LED must
not go out.
•
As soon as the diamond drill bit has visibly
immersed in the drilled material the feed can be
increased.
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. Therefore do
not exert too large a force on the diamond core drill
bit (Page 48 "Handling diamond core drill bits").
| 46 |
•
16
If the feed is too fast, the red LED (2) lights
up. Then, immediately reduce the feed until the
green LED 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 wet dia-
mond core drill bits").
WARNING
Risk of injury due to falling drill cores.
Î If drilling openings through objects, always
check the rooms below or behind and block off
the danger zone. Use formwork to secure the
drill core against falling.
6.6
Ending the drilling process
Through-hole
NOTE
Risk of deformation or fracture!
Do not hit the diamond drill bit with hard objects!
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
The diamond core drill bit can be damaged irrepa-
rably if it is jammed in the core drill hole.
Never use the diamond core drill bit to break out
the drill core!
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