Hilti DD 150-U Mode D'emploi page 18

5. Make a mark on the line at a distance of 292 mm
(11½") from the center of the hole to be drilled.
6. Switch on the vacuum pump and press the vacuum
release valve.
7. Bring the mark on the combination base plate or
vacuum base plate into alignment with the line.
8. Once the drill stand has been positioned correctly,
release the vacuum release valve and press the base
plate against the work surface.
9. Level and steady the combination base plate or
vacuum base plate by turning the 4 leveling screws.
10. An additional means of securing the drilling system
must be provided when drilling horizontally (e.g. a
chain attached to an anchor, etc.).
11. Make sure that the drilling system is secured reliably.
6.1.8 Fastening the drill stand with the jack screw
1. Fit the jack screw at the top end of the rail.
2. Position the drill stand on the work surface.
3. Level the base plate by turning the four leveling
screws.
4. Secure the base plate by tightening the jack screw.
5. Check to ensure that the machine is fastened se-
curely.
6.1.9 Adjusting the drilling angle when using
the drill stand with combination base
plate 15 16 17
(in 7.5° increments; adjustable to max. 45°)
CAUTION
There is a risk of crushing the fingers in the pivot mecha-
nism. Wear protective gloves.
1. At the foot of the drill stand, release the adjusting
lever until the sliding nuts are disengaged.
2. Adjust the column to the desired angle.
3. Tighten the adjusting lever until the sliding nuts are
fully engaged and the column is again secured in
position.
6.1.10 Connecting the vacuum removal system 18
1. Unscrew the cover from the water swivel / suction
head.
2. Push the suction hose into the suction hose con-
nector.
3. Close the water valve on the side handle.
6.1.11 Fitting the water connection 19
CAUTION
Regularly check the hoses for damage and make sure
that the maximum permissible water supply pressure
of 6 bar is not exceeded.
CAUTION
Make sure that the hose doesn't come into contact
with rotating parts.
CAUTION
Make sure that the hose is not pinched and damaged
as the carriage advances.
CAUTION
Max. water temperature: 40°C.
CAUTION
Check the water supply system to ensure there are
no leaks.
NOTE
To avoid damage to the components, use only fresh
water containing no dirt particles.
1. Close the cover on the water swivel / suction head.
2. Connect the water regulator to the machine.
3. Connect the water supply (hose coupling).
6.1.12 Fitting the water collection system
(accessory) 20
WARNING
Use of the water collection system in conjunction with
a wet-type industrial vacuum cleaner is a mandatory
requirement for work on ceilings. The machine must
be positioned at an angle of 90° to the ceiling. The
seal used must be of the correct size for the diamond
core bit diameter.
NOTE
Use of the water collection system allows water to be
led away in controlled fashion, thus avoiding a mess
or damage to the surrounding area. Best results are
achieved with a wet-type industrial vacuum cleaner.
1. Release the screw at the front of the rail.
2. Push the water collector holder into position.
3. Fit the screw and tighten it.
4. Fit the water collector between the two movable
arms of the water collector holder.
5. Press the water collector against the work surface
by turning the two screws on the water collector
holder.
6. Connect a wet-type industrial vacuum cleaner to the
water collector or fit a length of hose through which
the water can drain away.
6.1.13 Fitting the diamond core bit 21
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.
en
11