Automatic Levelling - Bosch Professional GCL 2-50 Original Instructions Manual

OBJ_BUCH-3119-001.book Page 18 Tuesday, February 28, 2017 4:01 PM
18 | English
– Point operation: The measuring tool generates a vertical
laser point facing upward and a vertical laser point facing
downward.
Working with Automatic Levelling
On/Off switch 2 in position
" "
Press 1 time
Laser
Press 2 times
Laser
Press 3 times
Laser
Press 4 times
Laser
Working without Automatic Levelling
On/Off switch 2 in position "
Press 1 time
Laser
Press 2 times
Laser
Press 3 times
Laser
Receiver mode
Receiver mode must be activated to work with the laser re-
ceiver 22 – regardless of which operating mode is selected.
In receiver mode the laser lines flash at very high frequency,
enabling them to be detected by the laser receiver 22.
To switch on receiver mode, press button 6. Indicator 4 will
light up green.
When receiver mode is switched on, the laser lines are less
visible to the human eye. For this reason, switch receiver
mode off by pressing button 6 again to work without a laser re-
ceiver. Indicator 4 will extinguish.

Automatic Levelling

Working with Automatic Levelling (see figures B1–E1)
Position the measuring tool on a level, firm support or attach
it to the rotating mount 14.
For work with automatic levelling, slide the On/Off switch 2 to
position " ".
1 609 92A 3SJ | (28.2.17)
All modes except for point operation can be selected both
with and without automatic levelling.
Horizontal line Vertical line
operation operation
 
Cross-line operation

–

–
– –
 
Cross-line operation
Horizontal line Vertical line
operation operation
 
"
Cross-line operation

–

–
 
Cross-line operation
After switching on, the levelling function automatically com-
pensates irregularities within the self-levelling range of ±4°.
The measuring tool is levelled in as soon as the laser lines no
longer flash.
If the automatic levelling function is not possible, e.g. be-
cause the surface on which the measuring tool stands devi-
ates by more than 4° from the horizontal plane, the laser
beams flash. In this case, bring the measuring tool to the level
position and wait for the self-levelling to take place.
In case of ground vibrations or position changes during oper-
ation, the measuring tool is automatically levelled in again. To
avoid errors by moving the measuring tool, check the position
of the laser beams with regard to the reference points upon
re-levelling.
If the measuring tool is outside of the self-levelling range, the
laser lines and/or points will flash quickly.
If you deactivate automatic levelling (On/Off switch 2 to posi-
tion "
operation.
Point Indicator 5 for working with-
operation out automatic levelling

–
–


Point Indicator 5 for working with-
operation out automatic levelling
–
red
– red
– red
–
red
"), the measuring tool will switch to cross-line
Figure
B1
C1
D1
E1
B1
Figure
F1
F1
Bosch Power Tools