Preparations At The Workplace; Before You Begin; Preparing The Drilling Machine For Hand-Held Use; Positioning The Side Handle - Hilti DD 30-W Manual

5 Preparations at the workplace

5.1 Before you begin

▶ The machine should remain disconnected from the electric supply while it is being set up or prepared for
use.
WARNING
Drilling presents a possible risk of structural damage to the building. Drilling work on buildings
and other structures may influence the statics of the structure, especially when steel reinforcing bars
or load-bearing components are cut through.
▶ Approval must be obtained from the site engineer or architect prior to beginning drilling work.
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.
Note
A depth gauge can be fitted together with the side handle ( → page 12).
Printed: 06.07.2017 | Doc-Nr: PUB / 5283534 / 000 / 05
English 11