Work Area; Personal Protective Equipment; Before Use - Hilti DC-SE 20 Manual De Instrucciones

in the electric supply. This will prevent accidental
restarting when the electric power returns.
4.4.3 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
en
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
supply cord from the power outlet. Damaged sup-
ply cords or extension cords present a risk of electric
shock.
c) Dirty or dusty machines which have been used fre-
quently for work on conductive materials should
be checked at regular intervals at a Hilti Service

5 Before use

5.1 Fitting the diamond cutting discs 3
G
The segments must have a negative rake angle and the
size of the gap G between the segments must not exceed
10 mm. The maximum disc thickness is 2 mm.
1. Lay the machine on its side so that the side guard is
visible.
2. Release the carriage by pressing the carriage lock-
button.
3. Pivot the carriage away from the body of the ma-
chine.
4. Open the side guard.
5. Fit the clamping flange onto the spindle.
6. Place the first diamond cutting disc on the clamping
flange.
NOTE The direction-of-rotation arrows on the ma-
chine and on the diamond cutting discs must cor-
respond.
16
a) Ensure that the workplace is well lit.
b) Ensure that the workplace is well ventilated. Ex-
The user and any other persons in the vicinity must
wear suitable eye protection, a hard hat, ear protec-
tion, protective gloves and breathing protection while
the tool is in use.
7.
G
8.
9.
10. Press the spindle lockbutton to prevent rotation of
11. Screw on the clamping nut and tighten it securely
12. Close the side guard.
13. Pivot the carriage towards the body of the machine
Center. Under unfavorable circumstances, damp-
ness or dust adhering to the surface of the ma-
chine, especially dust from conductive materials, may
present a risk of electric shock.

4.4.4 Work area

posure to dust at a poorly ventilated workplace may
result in damage to the health.

4.4.5 Personal protective equipment

Place the desired number of spacer rings on the
clamping flange.
NOTE The width of the channel to be cut can be
calculated as follows: Channel width = thickness of
the spacer rings + thickness of the diamond cutting
discs.
Place the second diamond cutting disc on the
clamping flange.
NOTE The direction-of-rotation arrows on the ma-
chine and on the diamond cutting discs must cor-
respond.
DANGER All of the spacer rings supplied must be
fitted, irrespective of the desired channel width
to be cut. The diamond cutting discs could oth-
erwise work loose while the machine is running,
presenting a risk of injury.
Place the remaining spacer rings on the clamping
flange.
NOTE Number and thickness of the required spacer
rings: 1 of each of the following: 3 mm, 6 mm, 13 mm
and 21 mm.
the spindle.
with the wrench.
until it engages in position.