Hilti DD 110-W Bedienungsanleitung Seite 29

4. Check that the diamond core bit is securely mounted
in the chuck by pulling on the core bit and attempting
to move it from side to side.
6.1.3 Fitting the dust removal attachment (optional)
6.1.3.1 Socket cutter 4
1. Push the hole-starting aid, point first, as far as it will
go, into the connection end for socket cutters with
en
dust removal.
2. Fit the connection end into the chuck in accordance
with the instructions for fitting a diamond core bit.
3. Push the locking ring and the dust removal attach-
ment back toward the power tool.
4. Fit the socket cutter onto the connection end.
5. Push the dust removal attachment forward until it is
in contact with the socket cutter and then secure it
in this position by sliding the locking ring toward the
socket cutter.
6. Check that the dust removal unit is free to rotate
relative to the power tool.
6.1.3.2 Core bit
1. Fit the connection end for core bits with dust removal
into the chuck in accordance with the instructions
for fitting a diamond core bit.
2. Fit the core bit onto the connection end.
6.1.4 Selecting the speed 5
CAUTION
Do not change gear while the machine is running.
Wait for the spindle to come to a halt.
Set the selector switch according to the core bit diameter
used. Turn the selector switch to the recommended set-
ting (see section "Description") while rotating the core bit
by hand.
6.1.5 Removing the diamond core bit
CAUTION
The core bit may get hot during use or during sharpening.
There is a risk of burning your hands. Wear protective
gloves when changing the core bit.
CAUTION
Disconnect the supply cord plug from the power out-
let.
NOTE
If using a BR, BT, M27 or M16 chuck, prevent rotation of
the chuck and use a suitable open-end wrench to remove
the core bit.
1. Open the chuck (BI+) by turning it in the direction of
the open brackets symbol.
26
2. Pull the sleeve on the chuck in the direction of the
arrow towards the machine. This releases the core
bit.
3. Remove the core bit.
6.2 Preparations for wet drilling
6.2.1 Positioning the side handle 2
CAUTION
Disconnect the supply cord plug from the power out-
let.
1. Release the side handle clamping band by turning
the handle counterclockwise.
2. Pivot the side handle into the desired position.
3. Secure the side handle by turning the grip clockwise.
6.2.2 Fitting the water connection 6
DANGER
Drilling in an upwards direction in wet drilling mode
is strictly prohibited.
CAUTION
Regularly check the hoses for damage and make sure
that the maximum permissible water supply pressure
of 6 bar is not exceeded.
NOTE
To avoid damage to the components, use only fresh
water containing no dirt particles.
NOTE
A flow meter (accessory) may be fitted between the
machine's water supply connector and the water supply
hose.
1. Connect the water regulator to the machine.
2. Connect the water supply
6.2.3 Fitting the diamond core bit 3
DANGER
Do not use damaged core bits. Check the core bits for
chipping, cracks, or heavy wear each time before use.
Do not use damaged tools. Fragments of the workpiece
or a broken core bit may be ejected and cause injury
beyond the immediate area of operation.
NOTE
Diamond core bits must be replaced when the cutting
performance and/or rate of drilling progress drops sig-
nificantly. This generally is the case when the segments
reach a height of less than 2 mm.