Hilti Pra 90 Mode D'emploi Original page 23

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1. Press the On/Off button on the tripod and on the remote control unit and hold the buttons pressed
simultaneously for at least 3 seconds.
◁ Successful pairing is shown by a chain on the PRA 30 display, while on the PRA 90 all LEDs are
blinking. After this is displayed, both tools switch off automatically.
2. Press the On/Off buttons on the PRA 90, PRA 30 and PR 30­HVS..
◁ On the PRA 30 remote control unit display, the rotating laser including tripod is shown, with the active
radio connection being depicted as a wave.
◁ If there is no active radio connection, a warning triangle appears on the display instead of the wave.
6.3 Align using the automatic tripod PRA 90
Note
This function is only available with the automatic tripod PRA 90.
When used for the first time, the laser receiver PRA 30 must be paired with the tripod
With the optional automatic tripod PRA 90, the height of the laser plane can be manually or
automatically adjusted to the desired height.
1. Mount the tool on the automatic tripod PRA 90.
2. Switch on the rotating laser, the automatic tripod and the laser receiver.
3. Now align the height of the laser plane manually → page 17 or automatically → page 17.
6.3.1 Manual alignment
▶ Press the +/- buttons on the laser receiver or the arrow buttons on the PRA 90 to shift the horizontal
plane up or down (parallel).
6.3.2 Automatic alignment 8,
1. Keep the receiver side of the laser receiver at the desired target height and towards the PRA 90 control
panel. Hold the laser receiver still while alignment is taking place and take care to ensure that the line of
sight between the laser receiver and the tool is not obstructed.
2. Press the "Automatic alignment" button on the laser receiver twice in quick succession (double-click).
Double-click the button again to complete the procedure.
◁ This double-click starts the process of bringing the laser plane into alignment, i.e. the tripod elevates
or lowers itself to the required height. During this time, an acoustic signal sounds continuously. As
soon as the laser beam strikes the detection area of the laser receiver, the beam moves to the position
of the marking notch (reference plane). After the position has been reached and the rotating laser has
leveled itself, a signal tone with a duration of 5 seconds indicates that the process is complete. The
"Automatic alignment" symbol is then also no longer shown.
3. Check the height settings in the display.
4. Remove the laser receiver.
Note
If the automatic alignment process was not successful, short signal tones are emitted and the
"Automatic alignment" symbol goes out.
6.4 Working with the tripod without the remote control unit
1. Press the On/Off button on the tripod.
◁ The tripod switches on.
2. On the control panel of the tripod, press the appropriate arrow buttons in order to move the tripod
upwards or downwards.
6.5 Working with the PRA 92 tripod and remote control unit (accessory)
Note
Before use, the remote control unit must be paired with the tripod in order to enable communication
between the two appliances.
1. Press the On/Off button on the tripod and on the remote control unit and hold the buttons pressed
simultaneously for at least 3 seconds.
◁ Successful pairing is indicated by the LEDs on both tools lighting at the same time.
Printed: 21.07.2017 | Doc-Nr: PUB / 5070305 / 000 / 03
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English 17