Operation - Scheppach DS920 Originalbetriebsanleitung

Installation
- Fold the front and back parttagether (Fig.2). And then
tighten the screw nut. (Fig.3).
- The Iongest length installation Insert the additional han-
dle to the end of the machine. And then turn the screw
nut on the end ofthe machine for tightening. (Fig.4)
Sandpaper
Selection
1. The grain size of the sandpaper is specified on its rear
side. The smaller the specified number, the coarser
the graining.
2. Use sandpaper with coarse grain for rough grinding,
and sandpaper with fine grain for finishing. We re-
cornrnend sandpapers with aluminium oxide, silicon
carbide or other synthetic abrasives.
3. lf you can chose between sandpapers with different
graining, you should start with coarsegraining sandpa-
per and complete the grinding process with the finest
possible graining. Thus you will get good and smooth
grinding results.
How to apply and replace sandpaper
Apply the sandpaper (13) to the grinding plate (9) using
the Velcro strip mechanism.
1. Align the sandpaper (13) with the grinding plate (9)
and press it on evenly.
2. PuII the sandpaper (13) off the grinding plate (9) and
replace it with a new one I another one (Fig.5).
Dust extraction
WARNING! Harmfull noxious gases may be generated
when e.g. lead-containing paint is processed. These
gases entail a risk for the operator and the persons in
the vicinity!
Therefore only use the power tool in combination with
a dust extraction unit, and protect yourself and other
persons in the working area with additional suitable per-
sonal protective equipment!
When working with this power tool, a Iot of dust is gener-
ated. The dust extraction unit is very useful if you want
to keep your workplace clean. lt is possible to combine
the extraction system or a vacuum cleaner with the ex-
traction hose (11) which is connected to the adapter for
dust extraction.
1. Align the nose at the hoseend with the extraction hose
adapter (12) (Fig.3), insert the end and secure it by
turning in a clockwise rotation (Fig.7).
2. Connect the dust extraction adapter with a suitable
dust extraction unit such as a vacuum cleaner (Fig.8).
Note: Make sure that the vacuum cleaner is suitable for
being used tagether with a power tool.
Brush edge
The grinding head of this power tool is enclosed by a brush
edge (1 0) which offers the following two advantages:
a) The brush edge (1 0) protrudes beyond the grinding
plate (9) and touches the surface to be processed
first. Thus, the grinding plate is positioned in parallel
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to the working area before the insertion tool comes in
contact with the surface which is to be processed. This
is to prevent the formation of sickle-shaped recesses
caused by the grinding disk edge.
b) Furthermore, the brush edge (10) prevents the gen-
eration of excessive dust. Dust generated du ring the
grinding process is not transported towards the out-
side but is removed by the extraction system. Make
sure before each operation with this power tool that
the brush edge (10) is not damaged. Have it replaced
if there is damage or wear.
Connection to the power supply
1. Make sure that the power tool is switched off. Always
switch the on/off switch (3) to off position before con-
necting the power tool to the power supply.
2. Plug the power plug into a correctly installed socket
which camplies with the requirements specified in the
technical data.
3. Your power tool is now ready for operation.

Operation

Oscillation rate
Before you start working with the swing speed to match
the appliance. Use a low swing speed for coarse grind-
ing, increase the oscillation rate for fine work.
1. Rotate the adjustment wheel (6) to adjust the oscilla-
tion rate. Turn the wheel clockwise to reduce the os-
cillation rate (Fig.9).
2. Turn the wheel counter-clockwise to increase the os-
cillation rate (Fig. 10).
Switching on/off
To switch on:
Push the on/ off switch (3)
Continuous operation: (Fig.11)
Secure the on/off switch (3) with the Ieeking button (a)
To switch off:
Press the on/off switch (3) briefly.
Note: The insertion tool moves for a short while after
having it switched off. Do not put aside the power tool
until the insertion tool has come to a complete halt.
Grinding
1. Attach an appropriate abrasive sheet (13) and select
the corresponding speed.
2. Hold the power tool securely at the handle surfaces
(1, 2) and switch it on as described.
3. Wait until the insertion tool has reached its full operat-
ing speed.
4. Hold the grinding plate (9) as parallelas possible to
the wall, and touch the surface tobe processed with
the brush edge (10) first.
5. Apply some pressure to the grinding head (8) such that
the insertion tool touches the surface to be processed.
6. Constantly move the power tool over the surface.
Note: lf you want to avoid irregular grinding results, do
not keep the power tool at one spot for too long.
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