Before Use - Hilti DD110-W Operating Instructions Manual

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 engi-
neer 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.

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.
CAUTION
Do not transport the machine while it is connected to
the electric supply. Disconnect the supply cord plug
from the power outlet.
CAUTION
To avoid injury, use only genuine Hilti core bits and
DD 110-W accessories. If using a machine with a BI+
chuck, only genuine Hilti core bits may be used with
it.
CAUTION
The core bit may get hot during use or during sharpening.
There is a risk of burning your hands. Wear protective
gloves when changing the core bit.
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.
d) It is recommended that rubber gloves and non-
skid shoes are worn when working outdoors.
e) Always lead the supply cord, extension cord and
water hose away from the tool or machine to the
rear to prevent a tripping hazard while working.
5.3.5 Personal protective equipment
The user and any other persons in the vicinity must
wear ANSI Z87.1-approved eye protection, a hard
hat, ear protection, protective gloves and breathing
protection while the machine is in use.
WARNING
Make sure that the supply cord and hoses do not
come into contact with rotating parts.
CAUTION
Do not change gear while the machine is running.
Wait for the spindle to come to a halt.
6.1 Preparations for dry drilling
6.1.1 Positioning the side handle 2
CAUTION
Disconnect the supply cord plug from the power out-
let.
1. Release the side handle clamping band by turning
the handle counterclockwise.
2. Pivot the side handle into the desired position.
3. Secure the side handle by turning the grip clockwise.
6.1.2 Fitting the diamond core bit 3
DANGER
Do not use damaged core bits. Check the core bits for
chipping, cracks, or heavy wear each time before use.
Do not use damaged tools. Fragments of the workpiece
or a broken core bit may be ejected and cause injury
beyond the immediate area of operation.
NOTE
Diamond core bits must be replaced when the cutting
performance and/or rate of drilling progress drops sig-
en
7