Hilti DD 160 Original Operating Instructions page 37

6.1.4 Using the vacuum fastening method (drill
stand with combination base plate) 7
DANGER
A coated, laminated, rough or uneven surface may signi-
ficantly reduce the effectiveness of the vacuum system.
Check whether the surface is suitable for use of the
vacuum method to fasten the drill stand.
DANGER
Overhead drilling with the machine secured only by
the vacuum base plate is not permissible.
CAUTION
Make yourself familiar with information contained in
the operating instructions for the vacuum pump and
follow these instructions before using it.
WARNING
Before beginning drilling and during operation it must
be ensured that the pressure gauge indicator remains
within the green area.
VACUUM
VACUUM
NOTE
To be carried out only when the drill stand is used with
the anchor base plate and vacuum base plate: Screw the
anchor base plate securely onto the vacuum base plate.
NOTE
Make sure that the anchor base plate lies flat against the
vacuum base plate and that the two plates are securely
connected. Make sure that the core bit selected for use
will not damage the vacuum base plate.
1. Turn (retract) the 4 leveling screws until they project
approx. 5 mm beneath the combination base plate
or, respectively, the vacuum base plate.
2. Connect the vacuum pump to the vacuum connector
on the combination base plate or vacuum base plate.
3. Locate the center point of the hole to be drilled.
4. Draw a line approximately 800 mm in length from
the center of the hole to be drilled towards where
the drill stand is to be positioned.
5. If using the combination base plate, make a mark
on the line at a distance of 292 mm (11 ½") 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.
6.1.5 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.
6.1.6 Adjusting the drilling angle when using
the drill stand with combination base
plate 8 9 10
(in 7.5° increments; adjustable to max. 45°)
CAUTION
There is a risk of crushing the fingers in the pivot mech-
anism. Wear protective gloves.
1. At bottom right of the drill stand, release the adjust-
ing lever until the slot nuts are disengaged.
2. Adjust the column to the desired angle.
3. Engage the slot nuts.
4. Tighten the adjusting lever until the slot nuts are fully
engaged and the frame is again secured in position.
5. Bring the adjusting lever back into the vertical po-
sition by pushing it inwards and then moving it as
necessary.
6.1.7 Fitting the water connection
CAUTION
Regularly check the hoses for damage and make sure
that the maximum permissible water supply pressure
of 5 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.
en
31