Starting Operation; Working Advice - Bosch PEX 400 AE Notice Originale

OBJ_BUCH-1336-003.book Page 15 Wednesday, October 8, 2014 11:24 AM
Integrated Dust Extraction with Dust Box
(see figures E–H)
Attach the dust box 3 onto the extraction outlet 11 until it
latches.
The filling level of the dust box 3 can easily be checked
through the transparent container.
To empty the dust box 3, pull it off toward the bottom with a
twisting motion.
Before opening the dust box 3, it is recommended to loosen
the dust from the filter element by gently striking it against a
firm support (as shown in the figure).
Hold the dust box 3 firmly, fold the filter element 12 upward
and empty the dust box. Clean the thin plates of the filter ele-
ment 12 with a soft brush.
Note: To ensure optimum dust extraction, empty the dust box
3 in good time and clean the filter element 12 at regular inter-
vals.
When working vertical surfaces, hold the power tool in such a
manner that the dust box 3 faces downward.
External Dust Extraction (see figure I)
Mount a vacuum hose 13 onto the extraction outlet 11. Con-
nect the vacuum hose 13 with a vacuum cleaner. An overview
for the connection of various vacuum cleaners can be found at
the end of these instructions.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
When working vertical surfaces, hold the power tool in such a
manner that the vacuum hose faces downward.
Auxiliary Handle (see figure J)
The auxiliary handle 5 enables convenient handling and opti-
mal distribution of power, especially at high removal rates.
For sanding close to edges, the auxiliary handle can be re-
moved. Unscrew wing nut 14 and pull screw 15 out of the
housing. Now, pull off the auxiliary handle 5 toward the front.
To remount the auxiliary handle 5, slide it from the front onto
the housing in such a manner that the studs of the handle en-
gage into the recesses of the housing. Firmly tighten the aux-
iliary handle with the screw 15 and the wing nut 14.
Operation

Starting Operation

 Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Switching On and Off
To start the machine, push the On/Off switch 2 forward so
that the "1" is indicated on the switch.
To switch off the machine, push the On/Off switch 2 toward
the rear so that the "0" is indicated on the switch.
To save energy, only switch the power tool on when using it.
Bosch Power Tools
Preselecting the Orbital Stroke Rate
With the thumbwheel for preselection of the orbital stroke
rate 1, you can preselect the required orbital stroke rate, even
during operation.
1–2 Low stroke rate
3–4 Medium stroke rate
5–6 High stroke rate
The required stroke rate depends on the material and the
working conditions and can be determined through practical
testing.
After longer periods of working at low stroke rate, allow the
machine to cool down by running it for approx. 3 minutes at
maximum stroke rate with no load.

Working Advice

 Before any work on the machine itself, pull the mains
plug.
 Wait until the machine has come to a standstill before
placing it down.
Sanding Surfaces
Switch the machine on, place it with the complete sanding
surface on the surface to be worked and move the machine
with moderate pressure over the workpiece.
The removal capacity and the sanding pattern are mainly de-
termined by the selection of the sanding sheet, the preselect-
ed orbital stroke 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 increas-
es the working life of the sanding sheets.
Intensifiying the sanding pressure does not lead to an in-
crease of the sanding capacity, but to increased wear of the
machine and the sanding sheet.
A sanding sheet that has been used for metal should not be
used for other materials.
Use only original Bosch sanding accessories.
Rough Sanding
Attach a sanding sheet with coarse grain.
Apply only light pressure to the machine so that it runs at a
higher stroke rate and high material removal is achieved.
Fine Sanding
Attach a sanding sheet with fine grain.
By lightly varying the application pressure or changing the or-
bital stroke rate, the sanding plate stroke rate can be reduced
whereby the orbital action is maintained.
With moderate pressure, move the machine in a circular pat-
tern or alternately in lengthwise and crosswise directions
over the workpiece. Do not tilt the machine to avoid sanding
through the workpiece (e.g. when sanding veneer).
After finishing the working procedure, switch the power tool
off.
Polishing
For the polishing of weathered paint or buffing out scratches
(e.g., acrylic glass), the machine can be equipped with appro-
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1 609 92A 0ZF | (8.10.14)