Hilti PR 2-HS Mode D'emploi page 21

To avoid the risk of injury, use only genuine Hilti accessories and insert tools.
Observe the information printed in the operating instructions concerning operation, care and maintenance.
Take the influences of the surrounding area into account. Do not use the appliance where there is a risk of fire or
explosion.
Modification of the tool is not permissible.
2.2 Features
The tool makes it possible for a single person to level or align in any plane quickly and with great accuracy.
The tool levels itself automatically after switching on. The laser beam is switched on only when the specified accuracy
has been achieved.
LEDs indicate the current operating status.
The tool is powered by a rechargeable Li‑ion battery which can be charged while the tool is in operation.
2.3 Digital distance measurement display
The laser receiver displays digitally the distance between the laser plane and the marking notch on the laser receiver.
This allows the user to determine the exact position of the receiver relative to the laser plane, with millimeter accuracy,
in a single operation.
2.4 Horizontal plane
After switching on, the tool levels itself automatically by way of two built-in servo motors.
2.5 Inclined plane (manual alignment in the desired plane of inclination)
The desired inclination can be set with the aid of the PRA 79 slope adapter. For further information on using the slope
adapter, please refer to the instruction sheet supplied with the PRA 79.
2.6 Shock warning
The shock warning function is activated two minutes after the tool has leveled itself after switching on. If a button
is pressed within these two minutes, the two-minute delay begins again. The tool switches to warning mode if it is
brought out of level while in operation (due to vibration or an impact); all LEDs begin to blink and the laser switches
off (the head stops rotating).
2.7 Automatic cut-out
The laser does not switch on and all LEDs blink if the tool is set up outside its self-leveling range (±5°) or if movement
is blocked mechanically. The tool can be set up on a tripod with a 5/8" thread or stood directly on some other steady
surface (free of vibration). When automatic leveling is activated for one or both axes, the built-in servo system ensures
that the specified accuracy is maintained. The tool switches itself off when automatic leveling cannot be achieved (tool
set up outside its leveling range or physical impediment of the mechanism) or when knocked off level (see "Shock
warning" section).
NOTE
If the correct level cannot be achieved, the laser switches itself off and all LEDs blink.
2.8 Items supplied
1 PR 2-HS rotating laser
1 PRA 20 (02) laser receiver
1 PRA 80 or PRA 83 laser receiver holder
1 Operating instructions
1 PRA 84 Li‑ion battery
1 PUA 81 AC adapter
2 Batteries (size AA cells)
2 Manufacturer's certificates
1 Hilti toolbox
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