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WARNING
Risk of accident! When drilling penetrations through walls or floors/ceilings, the core or fragments of
material may drop out and fall down on the other side.
▶ Take the necessary safety precautions on the other side of the wall or below the floor/ceiling before
drilling penetrations.
WARNING
Risk of injury due to flying fragments! Drilling may cause hazardous flying fragments. Flying fragments
present a risk of injury to the body and eyes.
▶ Wear eye protection, protective clothing and a hard hat.
WARNING
Risk of injury. The machine and the drilling operation generate noise. Exposure to noise can lead to hearing
loss.
▶ Wear ear protectors.
6.1
Hand-guided drilling
WARNING
Risk of electric shock! If the machine is used for hand-guided drilling in an upwards direction without the
necessary safety precautions, water may enter the machine and present a risk of electric shock.
▶ When carrying out hand-guided drilling in an upwards direction, always use a water collection
system with a wet/dry industrial vacuum cleaner and the spray guard.
WARNING
Danger of electric shock! Use of the wrong sealing ring when drilling overhead may cause water to find its
way into the interior of the diamond core drilling machine.
▶ Always use a sealing ring of the same diameter as the core bit.
1. Plug the drilling machine's supply cord into a power outlet or, if using a vacuum cleaner, into the power
outlet on the all-purpose vacuum cleaner (if the vacuum cleaner is equipped with a power outlet).
2. If using a vacuum cleaner, plug the vacuum cleaner supply cord into the electric supply socket and set
the switch on the vacuum cleaner to the AUTO or ON position (i.e. the I position).
3. Switch on the ground fault circuit interrupter (PRCD) (see → page 14).
In AUTO mode, the vacuum cleaner starts automatically with a delay after switching on the drilling
machine. When in AUTO mode the vacuum cleaner continues to run for a short time after the
drilling machine is switched off, before switching itself off automatically. When set to ON or I, the
vacuum cleaner requires to be switched on and off manually.
4. Mark the center of the hole to be drilled with a cross. The lines of the cross should be longer than the
diameter of the water collector.
The water collector has four protruding marks that can be aligned with the cross.
5. Press the drilling machine's control switch and hold it in this position. Set the water regulation lever to
the desired water flow rate and then release the control switch.
The water supply (water on/off) is controlled automatically by the drilling machine's control switch.
The water flow rate can be preset by turning the water regulating lever before starting drilling or
regulated while drilling is in progress (minimum water flow rate when the regulating lever is in the
"closed" position is approx. 0.3 l/min).
6. Position the water collector carefully at the position where the hole is to be drilled, without bringing the
core bit into contact with the working surface.
7. Bring the four marks on the water collector into alignment with the lines marking the center of the hole to
be drilled.
8. Check that the core bit is not in contact with the working surface and then press the control switch half
way (this activates hole-starting speed).
9. If you are drilling upwards, wait until the core bit has filled with water.
▶ This will help to ensure that the core bit is cooled and avoid damage cause by dry drilling.
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