16
en
2. Check that the insert tool connection end is clean and
lightly greased. Clean and grease the connection end
if necessary.
3. Check that the sealing lip on the dust cap is clean and
in good condition. Clean the dust cap if necessary or
replace it if the sealing lip is damaged.
4. Push the insert tool into the chuck and rotate it while
applying light pressure until it engages in the guide
grooves.
5. Push the insert tool into the chuck until it is heard to
engage.
6. Check that the insert tool is held securely by attempt-
ing to pull it out of the chuck.
7.3 Removing the insert tool
1. Unplug the supply cord from the mains socket.
2. Open the chuck by pulling back the locking sleeve.
3. Pull the insert tool out of the chuck.
7.4 Chiseling
-NOTE-
When working at low temperatures: The hammering
mechanism works only when the tool has reached a min-
imum operating temperature. Bring the drill bit into con-
tact with the base material and allow the tool to run under
no load until the minimum operating temperature is
reached. If necessary, repeat this procedure until the
hammering mechanism begins to operate.
-CAUTION-
●
Drilling may cause splintering of the
material.
●
Splinters may cause injury to parts
of the body and eyes.
●
Wear eye protection, protective gloves
and breathing protection if no dust
removal system is used.
-CAUTION-
●
The tool and the drilling operation
emit noise.
●
Excessive noise may damage the hear-
ing.
●
Wear ear protection.
7.4.1 Switching on
1. Plug the supply cord into the electric socket.
2. Press the on/off switch.
7.4.2 Switching off
Press the on/off switch.
7.4.3 Chiseling tips
Reinforcing bars
Always guide the chisel to-
ward the edge of the mate-
rial and not toward the rein-
forcing bar.
Starting chiseling
Position the point of the
chisel approx. 80–100 mm
from the edge of the mate-
rial.
Chiseling direction
Begin chiseling at an angle
of 70–80° to the concrete
surface, with the tip of the
chisel pointing toward the
edge. Increase the angle to
90° as the chisel penetrates,
thus breaking away material.
Self-sharpening process
Rotate the chisel in the chuck
at regular intervals (ensures
even wear and assists the
self-sharpening process).
Depth of penetration
Polygon chisels break up
and crush the material even
at considerable depth.
Contact pressure
Contact pressure too low:
Chisel jumps about.
Contact pressure too high:
Lower chiseling perfor-
mance.
80 - 100 mm
70
°
- 80
°
90
°
60 - 100 mm
12–15 kg