Würth EMS 12-A Manual Del Usuario página 17

OBJ_BUCH-1106-003.book Page 17 Thursday, October 27, 2016 2:00 PM
Preselecting the Orbital Stroke Rate
With the thumbwheel for preselection of the orbital stroke rate
6, you can preselect the required orbital stroke rate, even dur-
ing operation.
The required stroke rate depends on the material and the
working conditions and can be determined through practical
testing.
Working Advice
 Before any work on the machine itself (e. g.
maintenance, tool change, etc.) as well as dur-
ing transport and storage, remove the battery
from the power tool. There is danger of injury when
unintentionally actuating the On/Off switch.
 Wait until the machine has come to a standstill
before placing it down.
Note: Do not cover off the venting slots 7 of the machine
while working, as this reduces the working life of the machine.
Operating Principle
Due to the oscillating drive the application tool/accessory
oscillates up to 20000 times per minute at 2.8°. This allows
for precise work in narrow spaces.
Work with low and uniform application pres-
sure, otherwise, the working performance
will decline and the application tool can
become blocked.
While working, move the machine back and
forth, so that the application tool does not
heat up excessively and become blocked.
Sawing
 Use undamaged faultless saw blades only.
Deformed, blunt saw blades or saw blades that are other-
wise damaged can break.
 When sawing light building materials, observe
the statutory provisions and the recommenda-
tions of the material suppliers.
 Plunge cuts may only be applied to soft mate-
rials, such as wood, gypsum plaster boards,
etc.!
Before sawing with HCS saw blades in wood, particle board,
building materials, etc., check these for foreign objects such
as nails, screws, or similar. If required, remove foreign objects
or use BIM saw blades.
Separating
Note: When separating wall tiles take into consideration that
the application tools/accessories wear heavily when used for
longer periods of time.
Sanding
The removal rate and the sanding pattern are primarily deter-
mined by the choice of sanding sheet, the preset oscillation
rate and the applied pressure.
Only flawless sanding sheets achieve good sanding capacity
and extend the service life of the machine.
Pay attention to apply uniform sanding pressure; this
increases the working life of the sanding sheets.
Intensifiying the sanding pressure does not lead to an
increase of the sanding capacity, but to increased wear of the
machine and the sanding sheet.
For precise on-the-spot sanding of edges, corners and hard to
reach areas, it is also possible to work only with the tip or an
edge of the sanding plate.
When selectively sanding on the spot, the sanding sheet can
heat up considerably. Reduce the orbital stroke rate and the
sanding pressure, and allow the sanding sheet to cool down
regularly.
A sanding sheet that has been used for metal should not be
used for other materials.
Use only original Würth sanding accessories.
Scraping
For scraping, select a high oscillation rate.
Work on a soft surface (e.g. wood) at a flat ange, and apply
only light pressure. Otherwise the scraper can cut into the sur-
face.
Temperature Dependent
Overload Protection
When using as intended for, the machine cannot be over-
loaded. In case of excessive loading or when exceeding the
allowable battery temperature range of 0–70 °C, the speed
is reduced or the machine switches off. In case of reduced
speed, the machine will not run at full speed until after reach-
ing the allowable battery temperature again. In case of auto-
matic shut-off, switch the machine off, allow the battery to cool
down and then switch the machine on again.
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