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

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External Dust Extraction (see figure I)
Mount a vacuum hose 13 onto the extraction
outlet 11. Connect 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 ma-
terial being worked.
When vacuuming dry dust that is especially det-
rimental 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 fac-
es downward.
Auxiliary Handle (see figure J)
The auxiliary handle 5 enables convenient
handling and optimal distribution of power, espe-
cially at high removal rates.
For sanding close to edges, the auxiliary handle
can be removed. 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 engage into the recesses
of the housing. Firmly tighten the auxiliary han-
dle with the screw 15 and the wing nut 14.
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power 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 indi-
cated on the switch.
2 609 004 770 | (12.11.10)
Preselecting the Orbital Stroke Rate
With the thumbwheel for preselection of the or-
bital 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 materi-
al and the working conditions and can be deter-
mined 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 stand-
still before placing it down.
Sanding Surfaces
Switch the machine on, place it with the com-
plete 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 determined by the selection of the
sanding sheet, the preselected 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 pres-
sure; this increases the working life of the sand-
ing sheets.
Intensifiying the sanding pressure does not lead
to an increase of the sanding capacity, but to in-
creased 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.
Bosch Power Tools

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