Hilti DD 30-W Mode D'emploi page 43

WARNING
Danger of electric shock! Drilling inadvertently into electric cables or gas and water pipes presents a risk
of accident. Exterior metal parts of the drilling system may become live if an electric cable is contacted while
drilling.
▶ Use a metal detector, for example, to check for electric cables or gas and water pipes in the working
area before beginning drilling.
▶ Obtain permission from the structural engineer responsible before drilling through reinforcing bars.
▶ Check that the electric supply voltage complies with the details given on the type identification plate.
▶ Disconnect the supply cord plug from the power outlet before relocating the machine, e.g. before moving
the machine to the next drilling position.
▶ Always position the supply cord and hoses so that they do not come into contact with rotating parts of
the equipment.
▶ Do not lift the diamond core drilling machine and/or the drill stand by crane.
▶ Before using a vacuum pump, make yourself familiar with the content of the operating instructions and
observe the directions given.
▶ Make sure that the pointer on the pressure gauge remains within the green area while drilling is taking
place.
▶ Check that the rim (cutting edge) of the core bit has a height of at least 2 mm. If this is not the case,
replace the core bit as it may otherwise get stuck in the hole drilled.
▶ To avoid injury, use only genuine Hilti DD-C core bits and DD 30-W accessories.
5.2 Preparing the drilling machine for hand-held use
5.2.1 Positioning the side handle
1. Unplug the supply cord from the power outlet.
2. Release the side handle clamping band by turning the handle counterclockwise.
3. Secure the side handle in the desired position.
A depth gauge can be fitted together with the side handle ( → page 33).
4. Fasten the side handle securely by turning the grip until tight.
5.2.2 Fitting the depth gauge
1. Unplug the supply cord from the power outlet.
2. Release the side handle clamping band by turning the handle counterclockwise.
3. Slide the depth gauge from the front into the opening provided in the side handle.
4. Set the depth gauge to the desired depth.
5. Secure the depth gauge by turning the grip of the side handle until tight.
5.2.3 Fitting the spray guard
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.
1. Disconnect the supply cord plug from the power outlet.
2. Slide the spray guard over the chuck from the front and push it onto the gear housing on the drilling
machine.
5.2.4 Fitting the water collector holder
Drilling is permissible only under the following conditions:
The supplied water collector holder is fitted and adjusted to match the length of the core bit used.
A core bit sealing ring that matches the diameter of the core bit must be fitted in the water collector
holder.
1. Unplug the supply cord from the power outlet.
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