Maintenance And Service - Bosch PEX 220 A Manual Original

OBJ_BUCH-500-001.book Page 19 Monday, November 5, 2007 8:33 AM
Sanding Plate Brake
An integrated sanding plate brake reduces the
stroke rate when running at no-load so that scor-
ing is prevented when placing the machine onto
the workpiece.
If the no-load stroke rate 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 authorised after-sales
service agent for Bosch power tools.
Working Advice
Wait until the machine has come to a stand-
still before placing it down.
Sanding Surfaces
Switch the machine on, place it with the com-
plete 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 sand-
ing sheet and the applied pressure.
Only flawless sanding sheets achieve good sand-
ing 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 in-
creased 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.
Rough Sanding
Attach a sanding sheet with coarse grain.
Apply only light pressure to the machine so that
it runs at a higher stroke rate and high material
removal is achieved.
Bosch Power Tools
Fine Sanding
Attach a sanding sheet with fine grain.
By lightly varying the application pressure, the
sanding plate stroke rate can be reduced where-
by the orbital action is maintained.
With moderate pressure, move the machine in a
circular pattern or alternately in lengthwise and
crosswise directions over the workpiece. Do not
tilt the machine to avoid sanding through the
workpiece (e.g. when sanding veneer).
After finishing the working procedure, switch the
power tool off.
Application Table
The data in the following table are recommended
values.
The most favourable combination for working is
best determined by practical testing.
Application
Roughening varnish
Touching up varnish
Removing varnish
Softwood
Hardwood
Veneer
Aluminium
Steel
Derusting steel
Stainless steel
Masonry, stone

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.
English | 19
Grain Size
(course sanding/
fine sanding)
180/320
120/400
40/80
40/240
60/320
240/320
80/240
60/240
40/120
120/240
80/200
1 609 929 M15 | (5.11.07)