Troubleshooting - Hilti WSJ 850-ET Operating Instructions Manual

9. Troubleshooting

Fault
The saw blade drops out.
en
The saw blade cannot be
inserted.
The tool cannot be
switched on.
The switch cannot be lock- The switch is defective or dirty.
ed in the sustained running
position (WSJ 750-ET and
850-ET)
The orbital action cannot
be adjusted.
No orbital action.
Speed cannot be adjusted. The stroke rate adjustment thumb-
Speed too high or too low. The wrong stroke rate is set.
Dust removal with the
vacuum cleaner or dust
removal module doesn't
work.
The baseplate cannot be
pivoted.
An accessory cannot
be fitted (WSJ 850-ET/-EB) plate is dirty or the wrong accessory plate and check whether a suitable acces-
The dust removal module
doesn't function.
The cut is not straight.
The material being cut
overheats.
The material being cut
overheats (metal).
22
Printed: 08.07.2013 | Doc-Nr: PUB / 5071338 / 000 / 01
Possible cause
The saw blade is not engaged correctly. Reinsert the saw blade, taking care to
The blade clamping mechanism is
dirty.
The blade clamping mechanism is
dirty.
The supply cord is not plugged in.
The switch is defective or dirty.
The tool is dirty.
The tool is dirty.
The orbital action adjustment lever
is set to the "0" position.
wheel is dirty or defective.
The dust removal hood is not fitted.
The passages in the tool and / or dust Clean the passages in the tool or dust
removal adapter are dirty or blocked. removal adapter.
The securing screw has not been
released or the connection between
the baseplate and the tool is dirty.
The point of attachment to the base- Clean the point of attachment to the base-
is being used.
The module is not correctly attached Check that the module is correctly
to the tool.
The dust container is full.
The filter is dirty.
The blade is unsuitable for the
application.
The blade is blunt or damaged.
Stroke rate and cutting force is too
high.
Inadequate lubrication when cutting Use a new saw blade and ensure adequate
metal.
Remedy
ensure that the blade holder is fully open
and the saw blade is pushed in against the
resistance felt.
Clean the blade holder.
Clean the blade holder.
Check that the supply cord is plugged in.
Clean the exterior of the switch with a
cloth or have the switch checked by a
trained electrical specialist.
Clean the exterior of the switch with a
cloth or have the switch checked by a
trained electrical specialist.
Clean and remove foreign matter from
the slot for the orbital action adjustment
lever.
Check the area of the orbital action fork
and remove any dirt or foreign matter.
Set the lever to the desired position.
Clean the exterior of the thumbwheel or
have the tool checked by a trained
electrical specialist.
Check the stroke rate setting
(scale on the thumbwheel) and adjust it
accordingly.
Check that the vacuum cleaner is working
and that the dust removal adaptor and
dust removal hood are fitted.
Check the screw and release it if neces-
sary. Clean the area between the baseplate
and the tool.
sory is being used.
attached to the tool.
Empty the dust container.
Clean the filter or fit a new dust container.
Use the saw blade recommended by Hilti
for the application you are carrying out.
Use a suitable, new saw blade.
Reduce the stroke rate and apply less
pressure.
lubricant is applied between the saw blade
and workpiece.