Work Area; Personal Protective Equipment; Before Use; Preparing For Use - Hilti DD 150-U Mode D'emploi

c) Check the machine's supply cord at regular inter-
vals and have it replaced by a qualified specialist
if found to be damaged. If the machine's supply
cord is damaged it must be replaced with a special
approved, ready-made supply cord available from
Hilti Customer Service. Check extension cords at
regular intervals and replace them if found to be
damaged. Do not touch the supply cord or exten-
en
sion cord if damaged while working. Unplug the
supply cord from the power outlet. Damaged sup-
ply cords or extension cords present a risk of electric
shock.

5.3.4 Work area

a) Ensure that the workplace is well ventilated. Ex-
posure to dust at a poorly ventilated workplace may
result in damage to the health.
b) Wear a protective mask during work that gen-
erates dust, e.g. dry drilling. Connect a dust re-
moval system. Drilling in materials hazardous to
the health (e.g. asbestos) is not permissible.

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
work surface.
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.
32
c) Approval must be obtained from the site engineer
or architect prior to beginning drilling work. Drilling
work on buildings and other structures may influence
the statics of the structure, especially when steel
reinforcing bars or load-bearing components are cut
through.
d) It is recommended that rubber gloves and non-
skid shoes are worn when working outdoors.

5.3.5 Personal protective equipment

The user and any other persons in the vicinity must
wear suitable eye protection, a hard hat, ear protec-
tion, protective gloves, safety footwear and respirat-
ory protection while the tool is in use.
6.1.1 Adjusting the side handle 4
1. Release the side handle.
2. Pivot the side handle into the desired position.
3. Tighten the side handle securely by turning its grip.
4. Check to ensure that the side handle is tightened
securely.
6.1.2 Adjusting the depth gauge (when using the
drill stand)
1. Set the depth gauge to the desired depth.
2. Secure the depth gauge by tightening the clamping
screw.
6.1.3 Fastening the drill stand with an anchor 5 6
WARNING
Use an anchor suitable for the material on which you
are working and observe the anchor manufacturer's
instructions.
NOTE
Hilti M12 or M16 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.