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Then place the measuring rod with the laser receiver at the
other end of the inclined surface at ➋. Ensure that the posi-
tion of the laser receiver on the measuring rod remains un-
changed.
Start CenterFind mode for the axis to which the inclined
surface is aligned. At the end of CenterFind mode, the in-
clination of the surface is shown on the rotary laser.
CenterLock mode (LR 65 G)
In CenterLock mode, the rotary laser automatically at-
tempts to align the laser beam to the centre line of the laser
receiver by moving the rotation head up and down. In con-
trast to the CenterFind mode, the position of the laser re-
ceiver is continually checked and the inclination of the rotary
laser automatically adjusted. No slope values appear on the
display of the rotary laser.
Alignment is possible for the X‑axis and Y‑axis both when the
rotary laser is in a horizontal position and when it is in a ver-
tical position.
Start CenterLock mode:
Position the rotary laser and laser receiver so that the laser
receiver is situated in the direction of the X-axis or the Y-axis
of the rotary laser. Align the laser receiver so that the re-
quired axis is at a right angle to the reception area (1).
If the laser beam is aligned to both axes, then place a laser
receiver connected to the rotary laser in the direction of the
X- and Y-axis respectively. Each laser receiver must be situ-
ated within the pivoting range of ±8.5 % of the rotary laser.
Switch on the rotary laser in rotational operation.
In the settings menu of the laser receiver, the centre function
must be put in CenterLock (CL) mode. When aligning to two
axes of the rotary laser, this applies to both laser receivers.
To start the CenterLock mode for the X‑axis, either press
and hold the CenterFind (17) mode button, or press and
hold the CenterFind (17) mode button, together with the
X‑axis button (16).
To start the CenterLock mode for the Y-axis, press and hold
the CenterFind (17) mode button, together with the Y‑axis
button (15).
Should the laser beam be aligned to both axes at the same
time, CenterLock mode must be started separately on each
laser receiver.
1 609 92A 7M6 | (12.05.2022)
Following the start of CenterLock mode, the rotary head on
the rotary laser moves up and down. During the search pro-
cess, CLX (X‑axis) or CLY (Y‑axis) appears in the text
display (e).
If the laser beam hits the reception area (1) at the height of
the centre line of the laser receiver, the centre line
indicator (h) and the text display (e) LOC will appear. The
CenterLock symbol is displayed on the rotary laser on the
start screen for the corresponding axis.
In the event of changes to the position of the laser receiver
or rotary laser, the inclination is automatically adjusted on
the rotary laser.
Take great care when working with the CenterLock
u
mode that rotary lasers and laser receivers are not
moved unintentionally. Incorrect measurements can
arise from the automatic adjustment of the inclination
with every change of position.
Cancelling CenterLock mode:
To cancel or end the CenterLock mode, press and hold the
CenterFind mode button (17). If the laser beam was already
successfully aligned with the centre line of the laser receiver
at this point, the set inclination remains on the rotary laser
even when CenterLock mode is cancelled.
Troubleshooting:
If the laser beam was unable to find the centre line of the
laser receiver within 2 min (no matter whether at the start of
the mode or after changes to position), ERR appears in the
text display (e) and all LED direction indicators light up.
Press any button on the rotary laser and one on the laser re-
ceiver to close the error messages. Reposition the rotary
laser and laser receiver so that the laser receiver is situated
within the pivoting range of ±8.5 % of the rotary laser. En-
sure that the laser receiver is aligned to the X-axis or Y-axis
so that the laser beam can pass through the reception
area (1) horizontally. Then restart the CenterLock mode.
If both axes of the rotary laser should be aligned to a laser re-
ceiver, the same centre function must be set on both laser
receivers. A combination of CenterLock mode
and CenterFind mode is not possible.
If CenterFind mode is already set on one axis
and CenterLock mode is started on the other axis, ERR
and CF will appear alternately in the text display (e). Select
CenterLock mode on both laser receivers and re-start the
function.
Anti-strobe protection filter
The laser receiver has electronic filters for strobe light. The
filters protect against, for example, interference from the
warning lights of construction machinery.
Working Advice
Aligning with the spirit level
The laser receiver can be aligned vertically (plumb line) with
the spirit level (7). If a laser receiver is mounted at an angle,
it will give incorrect measurements.
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