Dust/Chip Extraction; Starting Operation; Working Advice - Bosch PMF 250 CES WEU Original Instructions Manual

OBJ_BUCH-1645-002.book Page 18 Monday, July 23, 2012 8:57 AM
18 | English
Sanding disc Material
– Paint
– Varnish
– Filling compound
– Filler
White quality

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.
Connecting the Dust Extraction (see figure E)
The dust extraction 18 is intended only when working with the
sanding plate 10; it is not of use in combination with other ap-
plication tools.
For sanding, always connect the dust extraction.
To mount the dust extraction 18 (accessory), remove the ap-
plication tool and the depth stop 12.
Slide the dust extraction 18 over and beyond the tool holder
8 to the stop onto the gear head of the power tool. Insert fas-
tening screw 17 into the corresponding recess on the hous-
ing. To lock the screw, turn it to the
Pay attention that the felt ring 19 is undamaged and faces
tightly against the sanding plate 10. Replace a damage felt
ring immediately.
Place a vacuum hose 15 (accessory) onto the vacuum con-
nection 16. Connect the vacuum hose 15 with a vacuum
cleaner (accessory).
An overview for connecting to various vacuum cleaners can be
found on the graphics page.
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.
To remove the dust extraction 18, turn fastening screw 17 to
the position and pull the dust extraction from the gear
head of the power tool.
2 609 006 340 | (23.7.12)
Application
For sanding off paint
For sanding primer (e.g., for removing brush dashes,
drops of paint and paint run)
For final sanding of primers before coating
Operation

Starting Operation

Observe the mains voltage! The voltage of the power
source must correspond with the data on the type plate of
the machine.
Switching On and Off
To start the machine, push the On/Off switch 2 forward so
that the "I" is indicated on the switch.
To switch off the machine, push the On/Off switch 2 toward
the rear so that the "0" is indicated on the switch.
When not using the power tool, switch it off in order to save
energy.
Constant Electronic Control
The constant electronic control keeps the stroke rate almost
constant under load conditions and ensures a uniform work-
ing performance.
Soft starting
The electronic soft starting feature limits the torque upon
switching on and increases the working life of the motor.
Preselecting the Orbital Stroke Rate
With the thumbwheel for preselection of the orbital stroke
rate 3, you can preselect the required orbital stroke rate, even
during operation.
The required stroke rate depends on the material and the
working conditions and can be determined through practical
position.
testing.
When sawing, cutting and sanding harder materials, e.g.,
wood or metal, it is recommended to work with orbital stroke
rate "6"; for softer materials, such as plastic, orbital stroke
rate "4" is recommended.

Working Advice

Wait until the machine has come to a standstill before
placing it down.
Before any work on the machine itself, pull the mains
plug.
Note: Do not cover off the venting slots 4 of the machine while
working, as this reduces the working life of the machine.
While working with HCS tools make sure that the covering of
the tools is undamaged.
Grain size
coarse 40
60
medium 80
100
120
fine 180
240
320
Bosch Power Tools