Hand-Guided Drilling - Hilti DD 30-W Manual

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 20).
Note
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.
Note
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.
Note
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).
22 English
Printed: 06.07.2017 | Doc-Nr: PUB / 5283534 / 000 / 05