Selecting The Speed - Hilti DD 350 Mode D'emploi Original

5.1.11 Inserting a diamond core bit
DANGER
Risk of injury Fragments of the workpiece or of broken insert tools may be ejected and cause injury
beyond the immediate area of operation.
▶ Do not use damaged insert tools. Check the insert tools for chipping, cracks, or heavy wear each
time before use.
CAUTION
Risk of injury The tool becomes hot as a result of use. It may have sharp edges.
▶ Wear protective gloves when changing the tool.
Note
Replace diamond core bits as soon as their cutting performance and/or rate of drilling progress drops
significantly. This generally is the case when the diamond segments wear to a height of less than 2
mm (1/16 in).
1. Lock the carriage on the rail with the carriage lock. Check to ensure that it is securely fastened.
2. Open the chuck by turning it in the direction indicated by the open brackets symbol.
3. From below, push the connection end of the diamond core bit into the splines of the chuck on the
diamond core drilling machine.
4. Close the chuck by turning it in the direction indicated by the closed brackets symbol.
5. Check that the diamond core bit is seated securely in the chuck.
5.1.12 Setting the depth gage (accessory)
1. Turn the hand wheel until the core bit is in contact with the base material.
2. Set the desired drilling depth by adjusting the distance between the depth gage and the carriage.
3. Lock the depth gage in position.
5.2 Types of work
5.2.1 Keep the danger zone clear
The shaded area in the illustration defines the danger zone round the diamond core drilling machine.
• When operating the machine, always keep at least 15 cm clear of the core bit.
• Position yourself behind the drill stand while drilling is in progress.

5.2.2 Selecting the speed

Note
Press the switch only when the tool is stationary.
12 English
Printed: 18.10.2017 | Doc-Nr: PUB / 5236054 / 000 / 02
13