# Starting Operation

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- Make sure that you are able to press the On/Off switch without releasing the handle.

To switch on the power tool, press the on/off switch (1).

To switch off the power tool, press the on/off switch (1) again.

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You can even preselect the orbital stroke rate during operation using the necessary orbital stroke rate preselection thumbwheel (2).

1–2 | Low orbital stroke rate
3–4 | Medium orbital stroke rate
5–6 | High orbital stroke rate

The required orbital stroke rate is dependent on the material and the work conditions and can be determined using practical tests.

The Constant Electronic keeps the orbital stroke rate at no load and under load virtually consistent, guaranteeing uniform performance.

After working at a low orbital stoke rate for an extended period, you should operate the power tool at the maximum orbital stroke rate for approximately three minutes without load to cool it down.

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| Application/Material | Abrasive | Speed setting
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Removing | Removing old paint and varnish Sanding wood | P60–P100 | 4–6
Sanding thermoplastic synthetic materials | P60–P100 | 1–3
Preparing | Sanding wood and veneer prior to painting Edge chamfering on wooden materials Smoothing wooden surfaces before staining | P120–P180 | 4–6
Intermediate lacquer sanding and sanding undercoats Intermediate lacquer sanding on edges | P220–P280 | 1–3
Finishing | Sanding wood Sanding solid wood edges and veneer edges | P150–P180 | 4–6
Lacquer sanding on stained surfaces and edges | P240–P320 | 1–3