8
■
21
Only have repairs carried out by recognized electrical
specialists. This electric tool/machine complies with respec-
tive safety regulations. Repairs may only be carried out
by an electrical specialist otherwise an accident hazard
for the operator can exist.
■
22
Connect dust extraction equipment. If devices are pro-
vided for the connection of dust extraction and collection
facilities ensure these are connected and properly used.
■
23
When working on electrically conductive materials,
conductive dust may collect inside an electric tool, caus-
ing leakage of electric voltage and a possible risk of elec-
tric shock. Work of this kind, for example, includes grind-
ing cast iron, chiselling or other operations using impact
tools on solid metal, overhead drilling in metal and, under
certain conditions, drilling through steel reinforcement in
concrete ceilings. Electric tools or machines used for appli-
cations of this kind must be inspected at regular, short
intervals by a recognised specialist or at a Hilti service
workshop in order to ensure that no hazardous deposits
of conductive dust are present inside the tool and to con-
firm the integrity of the tool’s electrical insulation
.
■
24
The dust extraction hood may be used only in con-
junction with diamond cutting discs and abrasive cut-
ting discs for mineral materials.
■
25
Check the tool, the dust extraction hood and the disc
for possible damage. A damaged tool, dust extraction
hood or disc must not be used.
Printed: 07.07.2013 | Doc-Nr: PUB / 5069489 / 000 / 00
