Dust/Chip Extraction; Starting Operation - Bosch GEX Professional 125-1 A Originalbetriebsanleitung

Replacing the Sanding Sheet (see figure A)
To remove the sanding sheet 6, lift it from the side and pull it
off of the sanding plate 5.
When attaching a new sanding sheet, remove any dust or
debris from the sanding plate 5, e. g., with a brush.
The surface of the sanding plate 5 is fitted with Velcro backing
for quick and easy fastening of sanding sheets with Velcro ad-
hesion.
Press the sanding sheet 6 firmly against the bottom side of
the sanding plate 5.
To ensure optimum dust extraction, pay attention that the
punched holes in the sanding sheet match with the holes in
the sanding plate.
For easy adjustment of the sanding sheet 6 to the sanding
plate 5, use the adjustment aid in the tool case as shown in the
following figure. Place the sanding sheet into the adjustment
aid with the Velcro facing upward and firmly push on the ma-
chine with the sanding plate.
Selection of the Sanding Plate
Depending on the application, the machine can be equipped
with sanding plates of different hardness:
– Sanding plate, extra soft: Suitable for polishing and sensi-
tive sanding, incl. on convex surfaces.
– Sanding plate, medium hard: Suitable for all sanding work;
universally usable.
– Hard sanding plate: Suitable for high sanding capacity on
flat surfaces.
Replacing the Sanding Plate (see figure B)
Note: Replace a damaged sanding plate 5 immediately.
Pull off the sanding sheet or the polishing accessory. Unscrew
the four screws 7 completely and remove the sanding plate 5.
Attach the new sanding plate 5 and tighten the screws again.
Note: When attaching the sanding plate, pay attention that
the toothing of the drive element engage into the openings of
the sanding plate.
Note: A damaged sanding-plate base may be changed only by
an authorised after-sales service agent for Bosch power tools.
Bosch Power Tools

Dust/Chip Extraction

Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Integrated Dust Extraction with Dust Box
(see figures C1–C4)
Attach the dust box 3 onto the extraction outlet 8 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 downward with a light
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 9 upward
and empty the dust box. Clean the thin plates of the filter
element 9 with a soft brush.
External Dust Extraction (see figure D)
Attach a vacuum hose 10 onto the outlet piece 8. Connect the
vacuum hose 10 with a vacuum cleaner. An overview for
connecting to various vacuum cleaners can be found at the
beginning of these operating 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.
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, tilt the On/Off switch 1 toward the right
to the "I" position.
To switch off the machine, tilt the On/Off switch 1 toward the
left to the "0" position.
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1 609 929 S73 | (30.3.11)