Starting Operation; Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch GDA 280 E Professional Originalbetriebsanleitung

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 1
towards the front to "I".
To switch off the machine, push the On/Off
switch 1 towards the rear to "0".
Preselecting the Orbital Stroke Rate
With the thumbwheel for preselection of the or-
bital stroke rate 2, you can preselect the re-
quired orbital stroke rate, even during opera-
tion.
The required stroke rate depends on the materi-
al and the working conditions and can be deter-
mined through practical testing.

Working Advice

Wait until the machine has come to a stand-
still before placing it down.
The removal capacity during sanding is mainly
determined by the selection of the sanding
sheet as well as the preselected orbital stroke
rate.
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.
Bosch Power Tools
For precise on-the-spot sanding of edges, cor-
ners and hard to reach areas, it is also possible
to work only with the tip or an edge of the sand-
ing plate.
A sanding sheet that has been used for metal
should not be used for other materials.
Use only original Bosch sanding accessories.

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and ventilation slots clean.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article
number given on the type plate of the machine.
WARNING! Important instructions for con-
necting a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this power tool, it
must be disposed of safely.
English | 19
1 609 929 N92 | (12.11.08)