Work Area - Hilti DD 110-W Manual De Instrucciones

b) Respiratory protection must be worn if the ma-
chine is used without a dust extraction system for
work that creates dust.
c) Improve the blood circulation in your fingers by
relaxing your hands and exercising your fingers
during breaks between working.
d) Avoid touching rotating parts. Switch the power
tool on only after bringing it into position at the
en
workpiece. Touching rotating parts, especially ro-
tating drill bits, discs or blades, etc. may lead to
injury.
e) When working, always lead the supply cord, the
extension cord and the vacuum cleaner hose (if
applicable) away from the machine to the rear.
This will reduce the risk of tripping and falling over
the cord or hose while working.
f) Avoid skin contact with drilling slurry.
g) Wear protective gloves when changing core bits.
The core bit may become hot during use.
h) Children must be instructed not to play with the
machine.
The machine is not intended for use by children,
i)
by debilitated persons or those who have received
no instruction or training.
j) Dust from material such as paint containing lead,
some wood species, minerals and metal may be
harmful. Contact with or inhalation of the dust may
cause allergic reactions and/or respiratory diseases
to the operator or bystanders. Certain kinds of dust
are classified as carcinogenic such as oak and beech
dust especially in conjunction with additives for wood
conditioning (chromate, wood preservative). Material
containing asbestos must only be treated by special-
ists. Where the use of a dust extraction device is
possible it shall be used. To achieve a high level
of dust collection, use a suitable vacuum cleaner
of the type recommended by Hilti for wood dust
and/or mineral dust together with this tool. Ensure
that the workplace is well ventilated. The use of a
dust mask of filter class P2 is recommended. Fol-
low national requirements for the materials you
want to work with.
5.3.2 Power tool use and care
a) Secure the workpiece. Use clamps or a vice to
secure the workpiece. The workpiece is thus held
more securely than by hand and both hands remain
free to operate the machine.
b) Check that the core bits used are compatible with
the chuck system and that they are secured in the
chuck correctly.
c) Switch the machine off and unplug the supply
cord in the event of a power failure or interruption
in the electric supply. This will prevent accidental
restarting when the electric power returns.
24
5.3.3 Electrical safety
a) Before beginning work, check the working area
(e.g. using a metal detector) to ensure that no
concealed electric cables or gas and water pipes
are present. External metal parts of the machine may
become live, for example, when an electric cable is
damaged accidentally. This presents a serious risk of
electric shock.
b) Never operate the machine without the supplied
PRCD (GB version: Never operate the machine
without an isolating transformer). Test the PRCD
each time before use.
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 sup-
ply cord is damaged it must be replaced with
a specially-prepared 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-
sion cord if damaged while working. Disconnect
the supply cord plug from the power outlet. Dam-
aged supply cords or extension cords present a risk
of electric shock.
d) Protect yourself from electric shock. Avoid body
contact with earthed or grounded surfaces such
as pipes, radiators, ranges and refrigerators.
e) Do not break the connection to earth by using an
adaptor plug.

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) Connect a dust removal system if the work cre-
ates dust. Drilling in materials hazardous to the
health (e.g. asbestos) is not permissible.
c) Approval must be obtained from the site engin-
eer or architect prior to beginning drilling work.
Drilling work on buildings and other structures
may influence the statics of the structure, espe-
cially 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.