Before Use; Preparing For Use - Hilti DD 120 Manual De Instrucciones

6 Before use

CAUTION
The mains voltage must comply with the specification
given on the type identification plate. Ensure that the
power tool is disconnected from the electric supply.
DANGER
When drilling through walls, cover the area behind
the wall, as material or the core may fall out on the
other side of the wall. When drilling through ceilings,
secure (cover) the area below as drilled material or
the core may drop out and fall down.
DANGER
Check that the drill stand is securely fastened to the
base material.
CAUTION
Do not break the connection to earth by using an
adaptor plug.

6.1 Preparing for use

CAUTION
The machine and the diamond core bit are heavy. There
is a risk of pinching parts of the body. Wear a hard hat,
protective gloves and safety boots.
6.1.1 Fitting the handwheel 4
NOTE
The handwheel may be fitted on the left-hand or right-
hand side of the carriage.
1. Fit the handwheel onto the shaft on the left-hand or
right-hand side of the carriage.
2. Secure the handwheel with the retaining pin.
6.1.2 Fastening the drilling system with an
anchor 3
WARNING
Use an anchor suitable for the material on which you
are working and observe the anchor manufacturer's
instructions.
NOTE
Hilti M12 metal expansion anchors are usually suitable for
fastening diamond core drilling equipment to uncracked
concrete. Under certain conditions it may be necessary
to use an alternative fastening method. Please contact
Hilti Technical Service if you have any questions about
secure fastening.
1. Set the anchor that is suitable for the material on
which you are working at the (ideal) distance of
203 mm (8") from the center of the hole to be drilled.
2. Screw the clamping spindle (accessory) into the
anchor.
3. Place the drill stand base plate over the spindle and
align it.
4. Screw the clamping nut (accessory) onto the spindle
but do not tighten it.
5. Level the base plate by turning the four leveling
screws. Take care to ensure that the leveling screws
make firm contact with the underlying surface.
6. Use a 19 mm AF open-end wrench to tighten the
clamping nut on the clamping spindle.
7. Make sure that the drilling system is secured reliably.
6.1.3 Fastening the drill stand with the vacuum
base plate
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
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