Dust/Chip Extraction; Starting Operation; Practical Advice - Bosch PMF 250 CES Originalbetriebsanleitung

20 | English
You can use all sanding sheets, polishing and cleaning
fleeces from the Delta 93 mm series in Bosch's range of ac-
cessories.
Sanding accessories such as fleece/polishing felt are at-
tached to the sanding plate in the same way.

Dust/chip extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Connecting the dust extraction system (see figure C)
The dust extraction system (15) is only designed for use
with the sanding plate (9); it serves no purpose when used
together with other application tools.
Always connect a dust extraction system for sanding.
Remove the application tool and the depth stop (11) for fit-
ting the dust extraction system (15) (accessory).
Slide the dust extraction system (15) as far as it will go over
the tool holder (7) onto the collar of the power tool. Turn the
dust extraction system to the required position (not directly
under the power tool). Push the clamping lever (16) shut to
fix the dust extraction system in position.
Plug the tool sleeve of the extraction hose (13) onto the ex-
traction outlet (14). Connect the dust extraction hose (13)
to a dust extractor (accessory).
You will find an overview of how to connect various dust ex-
tractors at the end of these operating instructions.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Operation

Starting Operation

Pay attention to the mains voltage. The voltage of the
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power source must match the voltage specified on the
rating plate of the power tool.
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
1 609 92A 4K5 | (11.10.2018)
Switching On/Off
Make sure that you are able to press the On/Off switch
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without releasing the handle.
To switch on the power tool, slide the on/off switch (2) for-
ward so that "I" appears on the switch.
The electronic soft start limits the torque when the power
tool is switched on and increases the service life of the mo-
tor.
The Constant Electronic keeps the orbital stroke rate at no
load and under load virtually consistent, guaranteeing uni-
form performance.
To switch off the power tool, slide the on/off switch (2)
backwards so that "0" appears on the switch.
Preselecting the orbital stroke rate
You can even preselect the required orbital stroke rate dur-
ing operation using the orbital stroke rate preselection
thumbwheel (3).
The required orbital stroke rate is dependent on the material
and the work conditions and can be determined using prac-
tical tests.
Orbital stroke rate level "6" is recommended for sawing, cut-
ting and sanding harder materials, such as wood or metal;
orbital stroke rate level "4" is recommended for softer ma-
terials, such as plastic.

Practical Advice

Pull the plug out of the socket before carrying out any
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work on the power tool.
Always wait until the power tool has come to a com-
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plete stop before placing it down.
Note: Do not keep the ventilation slots (4) on the power tool
closed when working as this will reduce the service life of the
power tool.
Operating principle
The oscillating drive causes the application tool to oscillate
back and forth by 2.8° up to 20000 times per minute. This
enables precise work in the tightest of spaces.
Use a consistent, low contact pressure
when performing work; otherwise, the
performance will be impaired and the ap-
plication tool may jam.
While working, move the power tool back
and forth to prevent the application tool
overheating and jamming.
Sawing
Use only undamaged saw blades that are in perfect
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condition. Bent or dull saw blades can break, negatively
influence the cut, or lead to kickback.
When sawing lightweight materials, take into account
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the statutory provisions and recommendations of the
material manufacturers.
Bosch Power Tools