Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch PBS 7 A Manual Original

Preselecting the Belt Speed (PBS 7 AE)
The necessary belt speed can be preselected
with the thumbwheel 1, even during operation.
The required belt speed depends on the material
being sanded and on the working conditions, and
can be determined by practical testing.

Working Advice

The sanding removal rate and the surface quality
are mainly determined by the selection of the
sanding belt as well as by the preselected belt
speed (PBS 7 AE). The higher the belt speed, the
more material is removed and the finer the sand-
ed surface.
Only flawless sanding belts achieve good sanding
capacity and make the machine last longer.
Work using the least possible sanding pressure in
order to increase the service life of the sanding
belts. The machine's own weight is sufficient for
a good sanding performance. An excessive in-
crease of the sanding pressure does not lead to
an increase of the sanding capacity, but to in-
creased wear of the machine and the sanding
belt.
Apply the machine to the workpiece only when
switched on. Work with moderate feed and carry
out the sanding with parallel and overlapping
strokes. Sand in the direction of the grain; sand-
ing across the grain produces an uneven sanding
effect.
Particularly when sanding coats of varnish, sand
in the direction of the grain as the varnish could
melt and smear the surface of the workpiece and
the sanding belt. Therefore, work with dust ex-
traction.
A sanding belt used for sanding metal should not
be used for other materials.
Use only original Bosch sanding accessories.
Store sanding belts only hanging; avoid creasing,
as this makes the belts unusable.
Stationary Operation
In stationary operation with the parallel and an-
gle guide 16, trimmings and profiles, as an exam-
ple, can be sanded to shape.
Bosch Power Tools
PBS 7 A/PBS 7 AE (see figures D–E)
Turn the machine upside down as shown in the
figure, and place it down on a sutrdy work bench.
Position two screw clamps 15 into the recesses
2 intended for this and thoroughly clamp down
the machine.
Additionally, the parallel and angle guide 16 can
be mounted; the threaded holes 6 are the fasten-
ing points for the parallel and angle guide 16.
PBS 7 A SET/PBS 7 AE SET (see figure F)
Fasten the base unit 17 on the upper side of the
machine with two screws. Position two screw
clamps 15 into the recesses on the base unit in-
tended for this and thoroughly clamp down the
base unit 17 and the machine.
Additionally, the parallel and angle guide 16 can
be mounted; the threaded holes 6 are the fasten-
ing points for the parallel and angle guide 16.

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and ventilation slots clean.
Remove adherent sanding dust with a brush.
Remove the cover 14 from time to time and clean
the inside area, to maintain optimum extraction
performance. (see figure C)
WARNING! Important instructions for connect-
ing a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
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1 609 929 N18 | (29.1.08)