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5.3.1 Calculating the gradient of the lawn
The robot lawn mower can cope with gradients
of up to 25%. You therefore need to avoid steeper
gradients. The gradient can be determined on the
basis of height divided by distance (Fig. 3a).
Example: a/b = 25 cm/100 cm = 25 %
5.3.2 Installing the battery
A battery (A) from the Power-X-Change series
is needed to operate the robot lawn mower. Im-
portant: Depending on the model of your robot
lawn mower, it might not come complete with the
battery (A). Open the battery compartment cover
(9). Press the pushlock button of the battery (A)
and push the battery (A) into the mount provided.
Close the battery compartment cover (9) and
make sure that it latches in place correctly (Fig.
3b). To remove the battery (A), open the battery
cover (9). Press the pushlock button of the battery
(A) and pull out the battery (A).
5.4 Charging station
5.4.1 Position of the charging station
Begin by determining the best position for the
charging station (19). You need an outdoor socket
outlet with a permanent supply of electricity so
that the robot lawn mower works at all times. The
charging station (19) must be placed on a fl at
area at the level of the turf. Make sure that the
area is fl at and dry. Ideally you should position the
charging station (19) at the edge of the mowing
area. Please note that the power cable for the
charging station (19) should not be laid inside the
mowing area. If it is, it will need to be buried to
avoid it being damaged by the robot lawn mower.
Position the charging station (19) together with
the guide cable (24) on an open area free of
obstacles which is as accessible as possible from
all directions. Avoid positioning the charging sta-
tion (19) in hard-to-reach corners or in areas that
can be reached only through bottlenecks. Make
sure that when the robot lawn mower is in the
charging station it has an adequate connection to
WLAN. The maximum distance from the charging
station (19) to a lawn boundary is not allowed to
exceed 1000 m. This serves to reduce the risk
of theft. At greater distances a fault message will
appear on the display (50) and the robot lawn mo-
wer cannot be operated in Main Area mode. The
mower's distance from the charging station (19) is
irrelevant for operation in Secondary Area mode.
To guarantee effi cient and automatic mowing it
is recommended to restrict the distance from the
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lawn boundary to the charging station (19) to 50
m. As the distance from the charging station (19)
increases, it is possible that the robot lawn mower
will no longer have enough battery power for it to
return to the charging station (19). Use a battery
with greater capacity for larger mowing areas.
Select a position in the shade because it is best
to charge the battery in cool surroundings. Tall
buildings or trees can weaken the GNSS signal
so that the robot lawn mower is no longer able
to fi nd its way back to the charging station (19)
automatically. It is important therefore to keep a
reasonable distance away from tall buildings and
trees and to make sure that the charging station
(19) lies under the open sky. Also note that the
guide cable (24) must be laid in a straight line
for least 1 m in front of the charging station (19)
and for at least 0.5 m behind the charging station
(19) (Fig. 4a). Curves immediately in front of the
charging station (19) could cause problems when
docking for charging.
5.4.2 Localization of the charging station
When the battery is almost empty, the robot lawn
mower will return to the charging station (19) by
following the guide cable (24). The robot lawn
mower compares its actual position with the cali-
brated position of the charging station in regular
intervals with the help of GNSS. The robot lawn
mower travels in the direction of the charging
station (19) and looks for the guide cable (24) in
several steps. As it does so, the robot lawn mower
stops now and again before setting off if necessa-
ry in a diff erent direction in order to reach the gui-
de cable (24). When the robot lawn mower gets
near to the guide cable (24) it will begin to detect
its position with the help of rotary movements and
the strength of the signal transmitted by the guide
cable (24).
If the robot lawn mower comes across an obstac-
le or a lawn boundary while mowing, this position
will be saved. The map produced as the result
helps the robot lawn mower to fi nd the charging
station (19) more quickly.
When the robot lawn mower reaches the guide
cable (24) it will follow it counter-clockwise to the
charging station (19). Make sure, therefore, that
the charging station (19) faces in the right direc-
tion when you position it (Fig. 4a).
5.4.3 Connecting the charging station to the
power supply unit
1. Before you connect the charging station (19)
to the power supply, check that the mains po-
wer supply is 100-240 V at 50/60 Hz.
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