Fitting The Core Bit - Hilti DD 30-W Manual

1. Unplug the supply cord from the power outlet.
2. Push the water collector holder into the opening provided at the front of the machine until it engages with
a click.
3. Use the slider to set the correct length range for the core bit used. Set the slider to the 150 position for
core bits with a length of up to 150 mm and set it to 300 for core bits with a length of 300 mm or 600 mm.
5.2.5 Fitting or replacing the sealing ring
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. Disconnect the supply cord plug from the power outlet.
2. Fit the sealing ring into the groove in the water collector and push the sealing ring down until it is heard
to engage.
3. To remove the sealing ring, turn it counterclockwise and pull it up out of the water collector.

5.2.6 Fitting the core bit

WARNING
Risk of injury caused by flying fragments or debris. Use of cracked, broken or badly worn core bits
may result in flying fragments (parts of the workpiece or broken core bit) presenting a risk of injury to
the operator or bystanders, even outside the working area.
▶ Check the core bit for cracks, breakage, heavy wear or other damage each time before use and
replace the core bit if necessary.
Printed: 06.07.2017 | Doc-Nr: PUB / 5283534 / 000 / 05
English 13