Dust/Chip Extraction; Starting Operation; Working Advice - Bosch PEX 220 A Originalbetriebsanleitung

Pull off the sanding sheet. Unscrew the four screws com-
pletely (9) and remove the sanding pad (3). Attach the new
sanding pad (3) and retighten the screws.

Dust/chip extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Self-generated Dust Extraction with Dust Box (see figure
A1–A4)
Place the dust box (2) onto the extraction outlet (6) until it
clicks into place.
To empty the dust box (2), press the locking lever (7) on the
side of the dust box (➊). Remove the dust box by pulling it
downwards (➋).
Before opening the dust box (2), knock the dust box against
a firm surface as shown in the figure to loosen the dust from
the filter element.
Take hold of the dust box (2) by the recessed grip, fold the
filter element (8) upwards out of the way and empty the dust
box. Use a soft brush to clean the flaps of the filter element
(8).
Note: In order to ensure optimum dust extraction, empty the
dust box (2) in good time and clean the filter element (8)
regularly.
When working on vertical surfaces, hold the power tool with
the dust box (2) facing downwards.
External Dust Extraction (see figure C)
Attach the dust extraction adapter (10) to the extraction
outlet (6). Make sure that the locking levers of the dust ex-
traction adapter lock into place. A dust extraction hose with
a diameter of 19 mm can be connected to the dust extrac-
tion adapter (10).
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.
In Germany, wood dust extraction requires extraction
devices which have been tested on the basis of TRGS 553;
self-generated dust extraction must not be used in the com-
mercial sector. Commercial operators must clarify the spe-
Bosch Power Tools
cific requirements for other materials with the responsible
trade association.
When working on vertical surfaces, hold the power tool with
the dust extraction hose facing downwards.
To remove the dust extraction adapter (10), press its lock-
ing levers down simultaneously and take off the dust extrac-
tion adapter.
Operation

Starting Operation

Pay attention to the mains voltage. The voltage of the
u
power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
230 V can also be operated at 220 V.
Products that are only sold in AUS and NZ: Use a resid-
u
ual current device (RCD) with a nominal residual current
of 30 mA or less.
Switching On and Off
Make sure that you are able to press the On/Off switch
u
without releasing the handle.
To switch on the power tool, flick the on/off switch (1) to
position "I".
To switch off the power tool, flick the on/off switch (1) to
position "0".
Sanding Plate Brake
An integrated sanding pad brake reduces the orbital stroke
rate when running without load to prevent scoring when the
power tool is placed on the workpiece.
If the no-load orbital stroke rate constantly increases over
time, this means that the sanding pad is damaged and must
be replaced, or that the sanding pad brake is worn. A worn
sanding pad brake must be replaced by an after-sales ser-
vice centre authorised to work with Bosch power tools.

Working Advice

Pull the plug out of the socket before carrying out any
u
work on the power tool.
Always wait until the power tool has come to a com-
u
plete stop before placing it down.
Sanding Surfaces
Switch the power tool on, place the entire sanding surface
against the surface of the workpiece and apply moderate
pressure as you move the sander over the workpiece.
The material removal rate and the sanding result are primar-
ily determined by the choice of sanding sheet and the con-
tact pressure.
Only immaculate sanding sheets achieve good sanding per-
formance and make the power tool last longer.
Be sure to apply consistent contact pressure in order to in-
crease the lifetime of the sanding sheets.
Excessively increasing the contact pressure will not lead to
increased sanding performance, rather it will cause more
severe wear of the power tool and of the sanding sheet.
English | 13
1 609 92A 4DN | (25.05.2018)