Hilti PR 30-HVSG A12, Manual

Page: 33 / 434

English 25
3.4 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 30G laser receiver.
• Inclination in the X-axis in conjunction with the PRA 30G laser receiver.
• Vertical in conjunction with the PRA 30G laser receiver.
3.5 Inclination
Inclination can be carried out manually or automatically. The PRA 79 slope adapter can be used for larger
angles of inclination.
3.6 Surveillance function
The rotating laser monitors alignment of the laser plane in conjunction with the PRA 30G laser receiver. In
the event of an alignment deviation the system corrects the direction of the laser plane, keeping it at the
zero point of the laser receiver. The rotating laser corrects all errors caused by temperature fluctuations,
wind or other such influences. If the optical connection (line of sight) between the rotating laser and the laser
receiver is interrupted for longer than two minutes, the system indicates an error. During vertical alignment,
the surveillance function can be activated only via the AUTO menu.
3.7 Automatic switch-off
The tool switches off automatically if it is unable to level itself because the rotating laser:
• Is inclined too greatly relative to the horizontal plane (except when in inclined plane mode).
• Is blocked mechanically.
• Has been knocked off level by an impact or vibration.
• Has identified a fault.
When the tool has switched itself off, rotation stops and all LEDs flash.
3.8 Shock warning function
If the rotating 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 rotating laser is in warning mode:
• All LEDs flash.
• The laser stops rotating.
• The laser beam switches off.
The sensitivity of the shock warning function can be set using the PRA 30G laser receiver.
The shock warning function can be switched off by pressing the button if the ground or floor is not free
from vibration or when you are working in inclined plane mode.
▶
Deactivate the shock warning function. → page 32
3.9 Sleep mode
Sleep mode may be activated on the rotating laser during breaks between work or during other activities. All
settings concerning the laser plane or inclination are retained while in this status. Sleep mode saves power
and extends battery life.
PRA 30G the laser receiver is used to activate / deactivate sleep mode.
Note
Sleep mode remains active for a maximum of 4 hours. The system switches itself off after this time.
3.10 Switching off beam segments
Individual segments of the path of the laser beam can be deactivated in order to:
• Avoid exposing yourself or bystanders to the laser beam.
• Avoid influencing other measuring or alignment work being carried out in the vicinity.
Printed: 29.09.2017 | Doc-Nr: PUB / 5377009 / 000 / 00