Checking the vertical line: Position the device about 5 m from a wall. Fix a plumb
bob with a line of 2.5 m length on the wall, making sure that the bob can swing freely.
Switch on the device and align the vertical laser to the plumb line. The precision is within
the specified tolerance if the deviation between the laser line and the plumb line is not
greater than ± 0.5 mm.
Checking the horizontal line:
Position the device about 5 m from a wall and switch
on the cross laser. Mark point B on the wall. Turn the
laser cross approx. 2.5 m to the right and mark point C.
Check whether the horizontal line from point C is level
with point B to within ± 0.5 mm. Repeat the process by
turning the laser to the left.
Regularly check the adjustment before use, after transport and after extended
periods of storage.
Hand receiver mode
Optional: Working with the laser receiver GRX
Use an GRX laser receiver (optional) to carry out levelling at great distances or when
the laser lines are no longer visible.
To work with a laser receiver, switch the line laser into hand receiver mode with the Hand
receiver mode button (11). The laser lines will now pulsate with high frequency, making
the laser lines darker. The laser receiver GRX can detect these pulsating laser lines.
Hand receiver mode can be used for horizontal or vertical levelling as well as for slope
functions.
Follow the operating instructions of the corresponding laser receiver.
PowerCross-Laser 8 G
B
2,5 m
C
23
EN