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WARNING The rotating core bit presents a risk of
6.
injury! A rotating core bit that is lowered toward
the base material is capable of severing parts of the
body. After fitting the core bit, adjust the system in
order to reduce the distance between the core bit
and the base material to a minimum before switching
on the diamond coring machine.
Bring the core bit as close as possible to the
en
surface in which the hole is to be drilled. However,
it should not touch the surface.
6 The core drilling operation
CAUTION
The AC supply voltage must correspond to the voltage
rating given on the type identification plate.
DANGER
Have the earth / ground conductor installation in the
mains supply and the earth / ground connection in the
machine checked at regular intervals.
WARNING
Take care to ensure that the supply cord does not come
into contact with rotating parts.
WARNING
Make sure that the supply cord is not pinched and dam-
aged as the carriage advances.
CAUTION
The machine and the drilling operation generate noise.
Wear ear protectors.
Excessive noise may damage the hearing.
CAUTION
Drilling may cause hazardous flying fragments.
Flying fragments present a risk of injury to the eyes and
body.
Wear eye protection and a hard hat.
DANGER
When drilling through walls, secure (cordon off) the area
behind the wall, as material or the core may fall out on
the other side of the wall. When drilling through ceilings,
secure (cordon off) the area below as drilled material or
the core may drop out and fall down.
CAUTION
Take care to avoid touching rotating parts when regulat-
ing the water flow while the machine is running.
30
5.12 Setting the depth gauge (accessory)
1.
Turn the hand wheel until the diamond core bit is in
contact with the surface in which the hole is to be
drilled.
2.
Set the desired drilling depth by adjusting the dis-
tance of the depth gauge from the carriage.
3.
Secure the depth gauge by tightening the clamping
screw.
5.13 Selecting the speed
1.
Select the switch setting according to the core bit
diameter used.
NOTE The speed of rotation of the core bit can be
changed while drilling is in progress.
6.1 Keep everything clear of the danger zone
The shaded area in the illustration indicates the danger
zone around the core drilling machine. When operating
the machine, always keep everything at least 15 cm away
from the core bit.
Position yourself behind the drill stand (see illustra-
tion) while drilling is in progress.
6.2 Starting a hole using the hole-starting function
NOTE
Pay attention to the information in this section in ad-
dition to the information about the various core drilling
applications.
Strong vibration may occur when starting a hole. Use the
hole-starting function if strong vibration is experienced.
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