Before Use - Hilti DD 160 Operating Instructions Manual

5.2.3 Electrical
a) Check the machine's supply cord at regular inter-
vals and have it replaced by a qualified specialist
if found to be damaged. Check extension cords
at regular intervals and replace them if found to
be damaged.
b) Do not touch the supply cord or extension cord
if it is damaged while working. Disconnect the
supply cord plug from the power outlet.
c) In case of an interruption in the electric supply:
Switch the machine off and unplug the supply
cord.
d) Avoid using extension cords with multiple power
outlets and the simultaneous use of several elec-
tric tools or machines connected to one extension
cord.
e) Never operate the machine when it is dirty or
wet. Dust (especially dust from conductive mate-
rials) or dampness adhering to the surface of the
machine may, under unfavorable conditions, lead
to electric shock. Dirty or dusty machines should
thus be checked at a Hilti service center at regular
intervals, especially if used frequently for working
on conductive materials.
f) 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

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.
become live, for example, when an electric cable is
damaged accidentally. This presents a serious risk of
electric shock.
5.2.4 Thermal
Wear protective gloves when changing core bits. The
core bit may become hot during use.
5.2.5 Requirements to be met by users
Improve the blood circulation in your fingers by re-
laxing your hands and exercising your fingers during
breaks between working.
5.2.6 Personal protective equipment
The user and other persons in the vicinity must wear
ANSI Z87.1-approved eye protection, a hard hat, ear
protection, protective gloves and safety footwear
while the machine is in use or during maintenance.
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 Mounting the machine on the drill stand
NOTE
The motor section and the carriage form a unit. The ma-
chine can thus be removed from the drill stand together
with the carriage.
1. Remove the end stop screw from the end of the rail.
2. Mount the machine on the drill stand by sliding the
opening in the carriage over the end of the column.
3. Engage the carriage locking system with the channel
and check that the channel is securely fastened.
4. Refit the end stop screw to the end of the rail.
en
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