# Starting Operation

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To switch on the power tool, press the on/off button (1) on the user interface until the user interface lights up.

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

The power tool switches off automatically after 30 min if it is not being used.

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Check the suitability of the substrate before loading the power tool with nails or performing fastening.

The substrate must be level and free from residue.

To check the hardness of the substrate material, use a nail as a centre punch. Use a hammer to hit it with a powerful strike on the material. Check the result:

- The point of the nail is blunted: The substrate is too hard and not suitable; the nail may ricochet.
- The material tears or splinters: The substrate is too brittle and is not suitable. Particles may hit you or other people, or the nail may completely penetrate the substrate.
- When struck with a hammer, the nail sinks into the substrate: The substrate is too soft and is not suitable; the nail may fully penetrate the substrate.
- The nail leaves behind a small recess in the substrate: The substrate is suitable for fastening.

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- Switch on the power tool.
- Press the unlocking switch (5) to the left to unlock the trigger (6) (see figure D).
- Ensure that you hold the power tool by the handle (7) with a firm grip.
- Press the contact element (17) all the way to the substrate.
  When the contact element is pressed, the worklight (19) lights up and illuminates the work area in poor lighting conditions.
- Afterwards, briefly press the trigger (6) and release it again. This discharges a nail into the substrate.
- Note: The trigger (6) must be pressed within 2 s after pressing the contact element (17). Otherwise, the power tool goes into safe mode and the discharging process must be restarted.
- For another driving procedure, lift the power tool fully off the substrate and position it firmly at the next required location.
- During work breaks and when work is finished, secure the trigger (6) by pressing the unlocking switch (5) to the right (see figure D).

Note: Securing prevents triggering if the contact element (17) is not fully pressed or the trigger (6) has not been released between discharging procedures.