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Bosch 0.601.387.503 Instrucciones De Servicio página 18

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OBJ_BUCH-315-002.book Page 17 Monday, June 11, 2007 12:59 PM
Replacing the Sanding Plate
(see figure B)
Note: Replace a damaged sanding plate 4 immedi-
ately.
Pull off the sanding sheet or the polishing accessory.
Unscrew the four screws 6 completely and remove
the sanding plate 4. Attach the new sanding plate 4
and tighten the screws again.
Note: When attaching the sanding plate, pay atten-
tion that the toothing of the drive element engage into
the openings of the sanding plate.
Dust/Chip Extraction
Integrated Dust Extraction with Dust Box
(see figures C1–C4)
Attach the dust box 3 onto the extraction outlet 7 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 strik-
ing it against a firm support (as shown in the figure).
Hold the dust box 3 firmly, fold the filter element 8
upward and empty the dust box. Clean the thin plates
of the filter element 8 with a soft brush.
External Dust Extraction (see figure D)
Insert a vacuum hose 9 onto the extraction outlet 7.
Connect the vacuum hose 9 to a vacuum cleaner. See
the overview for connecting to various vacuum clean-
ers at the end of these operating instructions.
The vacuum cleaner must be suitable for the material
being worked.
When vacuuming dry dust that is especially detrimen-
tal to health or carcinogenic, use a special vacuum
cleaner.
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.
2 609 140 411 • 11.6.07
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.
Preselecting the Speed (GEX 125-1 AE)
The required speed can be preselected with the
thumbwheel 2 (also while running).
1 – 2
low speed
3 – 4
medium speed
5 – 6
high speed
The required speed depends on the material and the
working conditions and can be determined through
practical testing.
After longer periods of working at low speed, allow
the machine to cool down by running it for approx.
3 minutes at maximum speed with no load.
Sanding Plate Brake
An integrated sanding plate brake reduces the speed
when running at no load so that scoring is prevented
when placing the machine onto the workpiece.
If the no-load speed continuously increases over the
course of time, then the sanding plate is damaged and
must be replaced or the sanding plate brake is worn.
A worn sanding plate brake must be replaced by an
authorized after-sales service agent for Bosch power
tools.
Operating Instructions
Wait until the machine has come to a stand-
still before placing it down.
For fatigue-free working, the machine can be held
from above, sideways or from the front, depending on
the application. (see figure E)
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 determined by the selection of the sanding
sheet, the preselected speed range (GEX 125-1 AE)
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
increases the working life of the sanding sheets.
Intensifiying the sanding pressure does not lead to an
increase 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.
English | 17

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