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▶ Use only the Hilti B12/2.6 and respectively the B 1230 Li ion battery for this product.
▶ Use only the Hilti C 4⁄1250 charger for this product.
3.1.6
Features
The rotating laser can be used vertically, horizontally and for inclined planes.
The tool is equipped with the following operating status indicators: auto-leveling LED, inclined plane mode
LED, surveillance mode LED and shock warning LED.
Auto-leveling
Auto-leveling takes place after the tool is switched on. LEDs indicate the current operating status. Auto-
leveling is active within the ±5° range relative to the horizontal plane and can be deactivated by pressing the
button. The tool can be set up directly on the ground or floor, on a tripod, or with the aid of suitable
mounting brackets.
Automatic alignment
Automatic alignment allows a single person to bring the laser plane into alignment with the laser receiver.
The rotating laser tool detects the applicable direction of alignment as follows:
•
Horizontal in conjunction with the PRA 90 automatic tripod and PRA 30 laser receiver.
•
Inclination in conjunction with the PRA 30 laser receiver, and (optional) with the PRA 79 slope adapter.
•
Vertical in conjunction with the PRA 30 laser receiver.
Inclination angle
The inclination can be set by the following means:
•
Manual entry of the values at the PRA 30 laser receiver
•
Automatic alignment of the rotating laser with the PRA 30 laser receiver
•
Presetting an inclination through use of the PRA 79 slope adapter
The angle of inclination can be read from the laser receiver.
Surveillance when working in the vertical plane
The rotating laser monitors alignment of the laser plane in combination with the PRA 30 laser receiver. In
the event of deviations in alignment, laser rotation stops for 40 seconds. During this time the tool corrects
all errors caused by temperature fluctuations, wind or other influences. Laser rotation restarts after this
automatic correction. If necessary, the surveillance function can be deactivated.
Automatic switch-off
The tool switches off automatically if it is unable to level itself because the laser:
•
Is inclined at more than 5° relative to the horizontal plane (except in inclined plane mode).
•
Is blocked mechanically.
•
Has been knocked off level by an impact or vibration.
When the tool has switched itself off, rotation stops and all LEDs flash.
Shock warning function
If the laser is knocked off level during operation, the built-in shock warning function switches the tool to
warning mode. The shock warning function does not go active until two minutes after completion of auto-
leveling. If a button on the control panel is pressed within this two-minute period it will take a further two
minutes for the shock warning function to go active. If the laser is in warning mode:
•
All LEDs flash.
•
The laser stops rotating.
•
The laser beam switches off.
The shock warning function can be switched off by pressing the
from vibration or when you are working in inclined plane mode.
▶ Deactivate the shock warning function. → page 32
Laser receiver / remote control unit
Hilti laser receivers digitally indicate the distance between the marking notch on the laser receiver and the
position at which the laser beam (laser plane) strikes the detection area on the receiver. The laser beam can
also be received over long distances. The PRA 30 can be used as a laser receiver and also as a remote
control unit for the rotating laser. The system of units and the unit of measurement can be set as desired.
▶ Set the units that are to be used. → page 34
▶ Change the units used by the laser receiver. → page 34
*2134492*
2134492
button if the ground or floor is not free
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