# Starting Operation

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You can preselect the required speed using the speed preselection thumbwheel (17), even during operation.

1−2 | low speed
3−4 | medium speed
5−6 | high speed

The values shown in the table are guide values. The required speed is dependent on the material and the work conditions and can be determined by practical trials.

Material | Router bit diameter [mm] | Thumbwheel position
--- | --- | ---
Hardwood (beech) | 4–10 12–20 22–40 | 5–6 3–4 1–2
Softwood (pine) | 4–10 12–20 22–40 | 5–6 3–6 1–3
Chipboard | 4–10 12–20 22–40 | 3–6 2–4 1–3
Plastics | 4–15 16–40 | 2–3 1–2
Aluminium | 4–15 16–40 | 1–2 1

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

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Before switching on, set the required routing depth.

To switch on the power tool, gently press the lock-on button and unlock key for the on/off switch (20), then press the on/off switch (19) and keep it pressed.

To lock the power tool, switch the power tool on and press the lock-on button and unlock key for the on/off switch (20). First release the on/off switch (19) and then the lock-on button and unlock key for the on/off switch (20).

To switch off the power tool, release the on/off switch (19); or, if the switch is locked with the lock-on button (20), briefly press the on/off switch (19) and then release it.

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

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The electronic soft start limits the torque when the power tool is switched on and increases the service life of the motor.