Hilti PR 30-HVS Operating Instructions Manual page 44

5. Read the inclination between the two points (positions of the rotating laser and the laser receiver) from the display
of the laser receiver.
NOTE After 5 seconds, the inclination value disappears from the display on the laser receiver.
7.7.4 Optional electronic inclination alignment
After aligning the rotating laser approximately and setting the slope as described above, alignment of the PR 30-HVS
can be optimized through use of Hilti's patented electronic alignment system.
1. Position the PRA 30 centrally opposite the PR 30-HVS at the end of the inclined plane. You can either hold it still
by hand or fix it in place with the aid of the PRA 80 / PRA 83 .
2. Activate electronic inclination alignment on the PR 30-HVS by pressing the "Electronic inclination alignment"
button.
When the arrows for electronic inclination alignment are blinking, the PRA 30 is receiving no laser beam from the
PR 30-HVS.
3. When the left arrow lights, turn the PR 30-HVS clockwise.
4. When the right arrow lights, turn the PR 30-HVS counter-clockwise.
When both arrows light, the PRA 30 is correctly aligned.
After successful alignment (both arrows light constantly for 10 seconds), the function ends automatically.
5. Then secure the rotating laser on the tripod so that it cannot be inadvertently moved out of position.
6. You can also end electronic inclination alignment by pressing the "Electronic inclination alignment" button.
NOTE There may be deviations between the results obtained by approximate alignment with the sighting notches
and fine alignment with the aid of electronic inclination alignment. As the electronic method is more accurate
than the visual method, we recommend that electronic inclination alignment is always used as the reference.
7.7.5 Setting the inclination with the aid of the PRA 79 slope adapter
NOTE
Check that the slope adapter is fitted correctly between the tripod and the tool (please refer to the operating instructions
for the PRA 79).
1. Set up the PRA 79 slope adapter in a suitable position for the application, e.g. on a tripod.
2. Position the tripod either at the upper edge or lower edge of the inclined plane.
3. Mount the rotating laser on the slope adapter and, with the aid of the target notch on the head of the PR 30-HVS,
adjust the tool and slope adapter so that they are parallel to the inclined plane. The control panel of the PR 30-HVS
should face away from the direction of inclination.
4. Make sure that the slope adapter is in the zero position (0°).
5. Switch the tool on (see 7.2).
6. Press the "Inclined plane mode" button.
The "Inclined plane mode" LED then lights on the control panel of the rotating laser.
The tool then begins automatic self-leveling. The laser switches on and begins to rotate as soon as this is
complete.
7. Set the slope adapter to the desired angle of inclination.
NOTE When the angle of inclination is set manually, the PR 30-HVS levels the laser plane once and then
subsequently fixes it. Vibration, changes in temperature or other influences that may occur during the course of
the day may affect the position of the laser plane.
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