Bosch GRL 500 H Operating/Safety Instructions Manual page 25

moving the rotation head left and right.
– Press the center line mode button
19 for approx. 2 s.
Automatic left/right movement of
the rotation head starts.
Search Sequence:
1. Rotation head pivots right to the stop.
/
2. Laser beam is switched on.
3. Rotation head pivots left.
4a. Laser beam hits the reception area 26
and finds the center line.
or
4b. If laser beam reaches end of pivoting
/
range without finding receiver/receiver
center, error 008 is generated. Reposition
the LR50/GRL500, clear the error and try
again.
The out-of-level indicator 37
flashes during the search for
the center line.
The indicators for center line
mode 42 light up
continuously.
As soon as the laser beam
hits the reception area 26, a
beep sounds until the center
line is found.
The speed at which the rotation head moves
will slow down as soon as the laser beam hits
the reception area 26.
When the center line has been found, the
measuring tool automatically switches off the
center line mode.
– To cancel center line mode during
the search, press the center line
mode button 19.
or
– Simultaneously press the slope
buttons 18 and 20 to activate
automatic leveling.
Speeding Up Center Line Mode
Searching for the center line always begins
with a right-hand movement of the rotation
head. The direction of the movement can be
/
changed if the position of the laser receiver
2610A16816.indd 25
to the left of the center line is known and the
laser beam is not yet in the reception area.
/
See also "Setting the Display of the Units",
page 30.
Working with the Laser Receiver
For outdoor use or longer distances indoors,
use the laser receiver to find the laser beam.
– Place the laser receiver so that the laser
Direction Indicators
The position of the laser beam in the
reception area 26 is indicated:
– on the display 15 on the front and rear
– optionally by the audio signal.
Laser receiver too low: If the laser beam
runs through the upper half of the reception
area 26, then the direction indicator "move
upward" 39 lights up and the plus value of the
relative height display 32 shows how much
the laser receiver has to be moved upwards.
If the audio signal is switched on, a slow
beep is heard.
– Move the laser receiver upwards in the
Laser receiver too high: If the laser beam
runs through the lower half of the reception
area 26, then the direction indicator "move
downward" 40 lights up and the minus value
-25-
– Press the center line mode button
19 for approx. 2 s.
The rotation head is automatically
moved to the right.
– Press the slope button 20.
The rotation head is moved to the
left.
Relative Height Display
(see figure F)
The distance between the
rotational plane and the center
line is shown on the display as
an absolute value (in [mm] or
[inch]).
beam can reach the reception area 26.
side of the laser receiver by the direction
indicator "move upward" 39, the direction
indicator "move downward" 40 or the
center line indicator 43,
arrow direction.
When the center mark 16 is approached,
only the tip of the direction indicator 39 is
shown.
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12/8/15 2:53 PM