Practical Advice - Bosch PBS 75 A Originalbetriebsanleitung

14 | English
Take hold of the dust box (6) by the recessed grip, fold the
filter element (12) upwards out of the way and empty the
dust box. Use a soft brush to clean the flaps of the filter ele-
ment (12).
Note: The belt sander has a high material removal rate.
Therefore, to ensure optimum dust extraction, empty the
dust box (6) at regular intervals after every five minutes of
operation and clean the filter element (12) regularly.
External Dust Extraction
Fit a dust extraction hose onto the extraction outlet (10).
Connect the dust extraction hose to an extractor. You will
find an overview of connecting to various dust extractors at
the end of these operating instructions.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Changing the Sanding Belt (see figures B–D)
– Swivel the clamping lever (3) all the way out. The sanding
belt (2) is now slack and can be removed.
– Fit the new sanding belt (2). Ensure that the arrow direc-
tions on the inner surface of the sanding belt and the
housing of the power tool match.
– Swivel the clamping lever (3) back to the starting posi-
tion.
– Lift up the power tool and switch it on. The belt running is
centred automatically when the tool is switched on and
during the sanding process.
If the belt running is not centred after switching the power
tool on, it may have to be manually adjusted. To do this, turn
the adjusting screw (13) on the front roller until the sanding
belt (2) runs at a distance of 2–3 mm from the aluminium
housing, see figure (D). Should the belt running still not be
centred after doing this, then the sanding belt (2) must be
replaced.
Selecting a Sanding Belt
Different sanding belts are available, depending on the ma-
terial you are working with and the required surface removal
rate:
For processing all wood and wood-based ma-
terials
For pre-sanding, e.g. of rough and un-
even beams and boards
For surface sanding and levelling of
slight irregularities
For finishing and fine sanding of hard
woods
1 609 92A 4D6 | (02.10.2018)
Operation
Start-up
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Switching On and Off
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To switch on the power tool, press and hold the on/off
switch (5).
To lock the on/off switch (5) press and hold it while also
pushing the lock-on button (7).
To switch off the power tool, release the on/off switch (5).
If the on/off switch (5) is locked, press the switch first and
then release it.
Preselecting the Belt Speed (PBS 75 AE)
You can even preselect the necessary belt speed during op-
eration using the belt speed preselection thumbwheel (4).
The required belt speed is dependent on the material and
the work conditions and can be determined using practical
tests.

Practical Advice

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The material removal rate when sanding and the surface
quality are primarily determined by the choice of sanding
belt and the preselected belt speed (PBS 75 AE). The higher
the belt speed, the higher the removal rate and the finer the
sanded surface becomes.
Only sanding belts in perfect condition achieve good sanding
performance and make the power tool last longer.
Apply as little contact pressure as possible while working in
order to increase the service life of the sanding belts. The
weight of the power tool alone is enough to ensure good
Grit
sanding performance. Excessively increasing the contact
40–240
pressure will not lead to increased sanding performance,
rather it will cause more severe wear of the power tool and of
the sanding belt.
Place the running power tool on the surface you wish to work
Coarse 40, 60
on. Work with moderate feed and carry out sanding in paral-
lel and overlapping with the sanding path. Sand with the
grain; sanding marks that run against the grain result in both-
Medium 80, 100,
ersome sanding effects.
120
Especially when sanding off paint residue, the residue could
Fine 180, 240
merge together, resulting in smears on the workpiece sur-
face and the sanding belt. Therefore, do not work without
dust extraction.
A sanding belt that has been used to work on metal should
no longer be used to work on other materials.
Pay attention to the mains voltage. The voltage of the
power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Products that are only sold in AUS and NZ: Use a resid-
ual current device (RCD) with a nominal residual current
of 30 mA or less.
Make sure that you are able to press the On/Off switch
without releasing the handle.
Pull the plug out of the socket before carrying out any
work on the power tool.
Bosch Power Tools