Care And Maintenance; Manufacturer's Warranty - Tools - Hilti DAG 451 S Mode D'emploi

Switching off:
Testing new discs
Allow the machine to run with the new disc for one minute at full speed under
no load. If the disc causes vibration, it must not be used.
Operation
Clamp the workpiece securely unless its own weight is sufficient to keep
it steady.
Do not stall the machine by applying excessive pressure or load to the disc.
Rough grinding
When using rigid grinding discs, best results are obtained when the disc is held
at angle of 15° – 40° to the workpiece. Apply moderate pressure and move the
machine backwards and forwards. This prevents the workpiece from overheat-
ing and becoming discoloured, and ensures that the surface is finished evenly,
without grooves.
Never use cutting discs for grinding.
Fan-type grinding discs
Curved surfaces and outlines (contour grinding) can be ground using fan-type
grinding discs.
Fan-type grinding discs have a considerably longer life, produce less noise and
do not run as hot as conventional flexible grinding discs.
Always disconnect the plug from the mains socket before carrying out any
work on the machine!
The gear housing can be rotated in increments of 90°. This permits the ON/OFF
switch 2 to be brought into the most suitable position for specific applications,
or for use by left-handed operators.
Remove the four screws 16.
Rotate the gear housing into the new position carefully.
Do not pull it away from the motor housing.
Reinsert the screws and tighten them securely.

Care and maintenance

Always disconnect the plug from the mains socket before carrying out any
work on the machine!
Keep the machine and the cooling slots clean at all times.
Repairs should be carried out only by trained electrical specialists.
Use only Hilti original carbon brushes.
Manufacturer's warranty – tools
Hilti warrants that the tool supplied is free of defects in material and work-
manship. This warranty is valid so long as the tool is operated and handled
correctly, cleaned and serviced properly and in accordance with the Hilti
Operating Instructions, and the technical system is maintained. This means
that only original Hilti consumables, components and spare parts may be
used in the tool.
This warranty provides the free-of-charge repair or replacement of defective
parts only over the entire lifespan of the tool. Parts requiring repair or
replacement as a result of normal wear and tear are not covered by this war-
ranty.
Additional claims are excluded, unless stringent national rules prohibit
such exclusion. In particular, Hilti is not obligated for direct, indirect,
incidental or consequential damages, losses or expenses in connec-
tion with, or by reason of, the use of, or inability to use the tool for any
purpose. Implied warranties of merchantability or fitness for a particu-
lar purpose are specifically excluded.
For repair or replacement, send tool or related parts immediately upon dis-
covery of the defect to the address of the local Hilti marketing organization
provided.
This constitutes Hilti's entire obligation with regard to warranty and super-
sedes all prior or contemporaneous comments and oral or written agree-
ments concerning warranties.
Printed: 07.07.2013 | Doc-Nr: PUB / 5069465 / 000 / 00
Press down the rear of the ON/OFF switch 2.
The switch then returns to the OFF position.