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11 GB/IE
Preparing for use / Operation
Dust extraction using external vacuum
extraction:
WARNING!
If there is an explosive mixture
of dust and air you must use a vacuum device espe-
cially intended for that purpose.
DANGER OF FIRE! Do not use vacuum dust
extraction (dust collection box or vacuum cleaner)
when sanding metals (flying sparks).
1. Push the extraction adapter
11
on to the dust
extraction spout
5
on the side of the device
(see Fig. C).
2. Slide the hose of a suitable dust extraction de-
vice approved for that purpose (e.g. a workshop
vacuum cleaner) on to the extraction adapter
11
.
©
Operation
©
Switching on and off
The PBS 900 A1 belt sander has full-wave electronics
with additional control electronics, soft start with
inrush current limiting.
When operating the belt sander you can select
between intermittent or continuous operation mode.
For short sanding tasks use the intermittent operation
mode. For longer sanding tasks we recommend the
continuous operation mode. Whilst working in your
selected mode the device functions as follows:
To switch on intermittent operation mode:
˽ Press the ON / OFF switch
3
.
To switch off intermittent operation mode:
˽ Release the ON / OFF switch
3
.
To switch on continuous operation mode:
˽ Press the ON / OFF switch
3
, and keep it
pressed, then press the locking knob
2
.
To switch off continuous operation mode:
˽ Press and then release the ON / OFF switch
3
.
©
Selecting the correct rotational
speed and sanding belt
You can select the belt speed using the belt speed
adjuster wheel
1
even whilst the sander is running.
The optimum belt speed depends on the workpiece
and the workpiece material. Always confirm the
best speed by carrying out a small test. The follow-
ing table lists some recommended values to help
you determine the optimum speed.
Material / type of
work
Softwood
Coarse finish
(Grit grade)
60
Fine finish (Grit grade) 240
Preselected rotation
speed
high (5-6)
Material / type of
work
Hardwood
Coarse finish
(Grit grade)
60
Fine finish (Grit grade) 180
Preselected rotation
speed
high (5-6)
Material / type of
work
Chipboard
Coarse finish
(Grit grade)
60
Fine finish (Grit grade) 150
Preselected rotation
speed
high (5-6)