of approx. 5 cm in the ground. Take care not to lay
the magnetic tape (27) too deep in the ground be-
cause then there is no longer any guarantee that it
will be recognized by the robot lawn mower.
5.7.4 Main area and secondary area (Fig. 5m)
A secondary area (B) refers to a work area that is
not directly connected to the main area (A), e.g. a
bottleneck. The robot lawn mower cannot reach a
secondary area directly and independently.
To be able to mow the secondary area (B) you
must carry the robot lawn mower manually into the
secondary area (B). The robot lawn mower must
be switched on with the main switch (7). Start the
robot lawn mower there by pressing the "START
A/B" button (64) for 5 seconds. Then close the
control panel cover (13). Secondary area mode is
activated and the status LED (52) will fl ash green.
When the robot lawn mower is in the secondary
area (B) it will not try to return to the charging
station (19) if the battery charge level is low. The
robot lawn mower will mow until the battery is
empty. Then you must either charge the battery or
carry the robot lawn mower back to the charging
station (19).
Important!
The robot lawn mower is allowed to move no more
than 1000 m from the charging station (19) or else
the GNSS LED (54) will turn yellow and the robot
lawn mower cannot be operated in Main Area
mode. The mower's distance from the charging
station (19) is irrelevant for operation in Seconda-
ry Area mode.
5.7.5 Distance from mowed areas not belon-
ging to you
Keep away from mowed areas which do not be-
long to you but to your neighbors, for example,
and which are operated with a perimeter wire. The
signal produced by the perimeter wire can lead
to problems when your robot lawn mower tries to
fi nd its way back to its charging station.
5.8 GNSS module
5.8.1 Calibrating the position of the charging
station
The robot lawn mower must calibrate the position
of the charging station (19) with the help of a glo-
bal navigation satellite system (GNSS) in order
to fi nd its way back to the search loop and to the
charging station (19).
For this purpose you must place the robot lawn
mower in ready-to-use condition and with the
GB
main switch (7) activated in the charging station
(19). The GNSS LED (54) will fl ash green during
the calibration process and will light up green
continuously as soon as the calibration is fi nished
successfully. This process can take several mi-
nutes.
Make sure that there is no shielding or roofi ng
which could prevent the positioning operation.
Avoid placing the charging station (19) near tall
buildings. Keep a reasonable distance away from
tall buildings and trees. Under some circum-
stances calibration might fail due to poor signal
coverage.
5.8.2 Mapping
When the robot lawn mower needs to return to the
charging station (19), it determines its distance
to the charging station (19) with the help of the
GNSS module. If the robot lawn mower comes
up against a garden boundary or any obstacles
on its way to the charging station (19), it will save
its position and the mowing area will be mapped.
This will help the robot lawn mower to return to the
charging station (19) faster in future use.
5.8.3 Deleting the maps
To delete all the GNSS data on your robot lawn
mower, switch off the robot lawn mower with the
main switch (7) (OFF). Press the lock button (62)
and keep it pressed while you simultaneously
switch on the robot lawn mower with the main
switch (7) (ON). The robot lawn mower will issue
an acoustic signal to confi rm deletion. Then you
must restart the robot lawn mower in the charging
station (19) in order to recalibrate the loading
station's position. If you carry out any major al-
terations to the mowing area in your garden it is
recommendable to delete the robot lawn mower's
mapping. Particular during hot summer months,
a large number of yellowed lawn patches could
have a detrimental eff ect on the way the robot
lawn mower works. In such cases we recommend
you to refrain from using automatic mode and to
switch instead to using secondary area mode in
suitable parts of the garden. However, this might
also lead to corruption of the mapping so that the
robot lawn mower is no longer able to work cor-
rectly. In such cases: delete the mapping.
5.9 Garden boundaries and their quality
To ensure that your robot lawn mower works safe-
ly without a perimeter wire, the robot lawn mower
uses the camera unit (15) to check the boundaries
of the mowing area. The camera unit (15) ana-
lyzes the mowing area lying ahead of it (approx.
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