BTI MLL 360 Mode D'emploi page 9

- On leaving automatic levelling range, all laser lines will start pulsating.
- For changing accumulators according to the requires specifications.
Checking accuracy before work
Checking upper / lower plummet point:
- Position the laser in a room with approx. 3 m height.
- Level the device and turn on all vertical beams for upper plummet point.
- Mark lower pummet point and ceiling point.
- Turn the laser by 180° and measure distance between plummet laser points and the
markings.
- The measured distance should not exceed ± 1 mm, otherwise the laser needs adjustment.
Checking vertical lines:
- Apply a plumb bob to the ceilig or a wall.
- Level the device and turn on all vertical lines.
- Check all vertical lines by aligning each of them with the plumb bob line.
- If laser and plumb bob lines are aligned, the laser is adjusted perfectly.