Operating Modes; Orientation Of X- And Y-Axis; Rotational Operation; Operating Modes Overview - Bosch GRL Professional 500 H Originalbetriebsanleitung

Step
4b Deviation after calibration is within the
maximum permitted limits of ±3 mm:
Work can be performed without loss of ac-
curacy.
Deviation after calibration is still outside of
the maximum permitted limits of ±3 mm:
Have measuring tool checked by a Bosch
customer service agent

Operating Modes

Orientation of X- and Y-Axis

The orientation of the X- and Y-axis is marked on the housing
above the rotation head.

Rotational Operation

The measuring tool operates with a fixed rotational speed
(600 rpm), which is suitable for use of a laser receiver.

Operating Modes Overview

– Automatic Levelling

after switching on/during operation

– Single-axis Slope Operation

– Centre Line Mode
– Anti-Drift System (ADS)
– Line Control in Vertical Mode (GRL 500 HV)
Automatic Levelling

Automatic Levelling after Switching On

After switching on, the measuring tool checks the horizontal
position and automatically compensates for irregularities
within the self-levelling range of approx. 10% (5.7°).
The out-of-level indicator 37 flashes
during levelling.
GRL 500 HV: Once it has been switched on, the measuring
tool automatically detects the horizontal or vertical position.
To change between the horizontal and vertical position, you
can reposition it without switching it off.

Automatic Levelling during Operation

If after a position change the measuring tool is outside of the
self-levelling range of approx. 10% (5.7°), levelling is no long-
er possible.
– In this case, realign the measuring tool and then
simultaneously press the slope buttons 18 and
20 to activate automatic levelling.
If the measuring tool is levelled, it constantly checks the level
position. Re-levelling is automatically performed if there are
Bosch Power Tools
any position changes. To prevent incorrect measurements,
See
the rotation of the laser beam stops during the levelling pro-
page
cess.
Single-axis Slope Operation
When the measuring tool is in the horizontal position, the X-
axis is automatically levelled while in single-axis slope opera-
tion.
The rotational plane can be turned around the X-axis in a
range of ±10%.

Slope Setting

Slope setting is possible within a range of ±10%.
/
– Simultaneously press the slope buttons 18 and

Centre Line Mode (see figure D)

In centre line mode, the measuring tool automatically tries to
find the centre line by moving the rotation head upward and
downward.
– Press the centre line mode button 19 for approx.
Search Sequence:
1. Rotation head pivots upwards to the stop.
2. Laser beam is switched on.
3. Rotation head pivots downwards.
4a. Laser beam hits the reception area 26 and finds the cen-
tre line.
or
4b. Laser beam reaches the end of the pivoting range without
finding a reception area; automatic levelling starts (see "Auto-
matic Levelling during Operation", page 39).
– Press and hold the slope button 18 or
20 until the desired slope value is
shown on the display.
– Let go of the slope button 18 or 20
again.
The out-of-level indicator 37 flashes dur-
ing slope setting.
The slope mode indicator 41 lights up con-
tinuously.
20.
Slope setting is deactivated.
Automatic levelling is activated (see "Automatic
Levelling", page 39).
If the slope range of ±10% is exceeded,
the slope mode indicator 41 goes out.
2 s.
Automatic upward and downward movement of
the rotation head starts.
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