Electrical Safety; Work Area; Personal Protective Equipment - Hilti DD 110-D 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.
en
d) Avoid touching rotating parts. Switch the power
tool on only after bringing it into position at the
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) Children must be instructed not to play with the
machine.
g) The machine is not intended for use by children,
by debilitated persons or those who have received
no instruction or training.
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.

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) 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-
sion cord if damaged while working. Unplug the
6
supply cord from the power outlet. Damaged sup-
ply cords or extension cords present a risk of electric
shock.
c) When working outdoors with a power tool check
to ensure that the tool is connected to the electric
supply by way of a ground fault circuit interrupter
(GFCI) with a rating of max. 30 mA (tripping cur-
rent). Use of a ground fault circuit interrupter reduces
the risk of electric shock.
d) Use of a ground fault circuit interrupter (GFCI)
with a maximum tripping current of 30 mA is
recommended.

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) WARNING: Some dust created by grinding, sand-
ing, cutting and drilling contains chemicals known
to cause cancer, birth defects, infertility or other
reproductive harm; or serious and permanent res-
piratory or other injury. Some examples of these
chemicals are: lead from lead-based paints, crys-
talline silica from bricks, concrete and other masonry
products and natural stone, arsenic and chromium
from chemically-treated lumber. Your risk from these
exposures varies, depending on how often you do
this type of work. To reduce exposure to these
chemicals, the operator and bystanders should
work in a well-ventilated area, work with ap-
proved safety equipment, such as respiratory pro-
tection appropriate for the type of dust generated,
and designed to filter out microscopic particles
and direct dust away from the face and body.
Avoid prolonged contact with dust. Wear protec-
tive clothing and wash exposed areas with soap
and water. Allowing dust to get into your mouth,
nose, eyes, or to remain on your skin may promote
absorption of harmful chemicals.

5.3.5 Personal protective equipment

The operator and bystanders must wear ANSI Z87.1
approved protective glasses, a hard hat, ear protec-
tors, protective gloves and safety footwear while the
machine is in use. Respiratory protection must be
worn if the work creates dust.