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5.5.4 Laying the wire in corners
Avoid laying the perimeter wire (18) at a right-
angle (90°) in corners. To make sure that the
robot lawn mower does not run too far beyond the
perimeter wire (18), lay the perimeter wire (18) as
shown in Fig. 6b.
5.5.5 Calculating the gradient of the lawn
The robot lawn mower can cope with gradients
of up to 35%. You therefore need to avoid steeper
gradients. The gradient can be determined on the
basis of the height divided by the distance (Fig.
6c).
Example: a/b = 35 cm/100 cm = 35%
5.5.6 Installation of the perimeter wire on
gradients
The robot lawn mower can slip on gradients,
especially if the grass is wet, and run over the
perimeter wire (18) as a result. It is therefore
recommendable to pay attention to the following
points (Fig. 6d):
•
In the area at the top of a slope, the perimeter
wire (18) should not be installed on gradients
over 35%. Make sure that a distance of 30 cm
from obstacles and the edges of the lawn is
maintained.
•
In the area at the bottom of a slope, the
perimeter wire (18) should not be installed
on gradients over 17%. Make sure that a dis-
tance of 40 cm from obstacles and the edges
of the lawn is maintained.
5.5.7 Driveways and paved paths
•
Cordon off raised pathways, areas surfaced
with gravel or containing bark mulch, lower
lying beds or other similar areas. Lay the peri-
meter wire (18) at a distance of at least 30 cm
away (Fig. 6e and 6g).
•
Paths which are flush with the turf do not
need to be cordoned off, because the robot
lawn mower can simply run over them. You
can also lay the perimeter wire (18) over
paths (Fig. 6f and 6g).
5.5.8 Perimeter islands
To protect obstacles in the mowing area, create
perimeter islands. This will enable collisions with
delicate objects, garden ponds, trees, furniture,
fl
ower beds, etc., to be avoided (Fig. 6h and 6i).
•
Roll out the perimeter wire (18) from the
edges to the objects you want to protect.
•
Secure the perimeter wire (18) with fastening
pegs (14) in a clockwise direction around the
object you want to protect.
•
Completely enclose the perimeter islands and
then run the perimeter wire (18) back to the
point at which you left the edge of the lawn.
•
Perimeter islands need to be at least 0.8 m
apart. Alternatively, combine the objects to
make them into a joint perimeter island (Fig.
6h).
•
The perimeter wires (18) to and from the pe-
rimeter island should be laid parallel and very
close to one another. -
Caution! Perimeter
wires (18) must not cross over!
- You
should therefore fasten both the parallel peri-
meter wires (18) to the ground together using
the same fastening peg (14) (Fig. 6i).
•
The robot lawn mower will run over the two
parallel perimeter wires (18) in the mowing
area, but the robot lawn mower will stop whe-
re single perimeter wires (18) are laid.
5.5.9 Obstacles
•
Obstacles with a height over 10 cm
(Fig. 6j)
Solid obstacles which are over 10 cm in
height, e.g. trees, walls, fences, garden
furniture, etc., are detected by the collision
sensors. If the robot lawn mower collides with
an obstacle, it will stop, switch off the mower
unit, reverse and turn so that it can continue
mowing in the other direction. Soft, unstable
and valuable obstacles need to be protected
by a perimeter wire island.
•
Stones and low obstacles
Stones, rocks and low obstacles of less than
10 cm in the mowing area need to be protec-
ted, because otherwise the robot lawn mower
could run over them. If not, this could result
in the robot lawn mower getting damaged or
blocked.
•
Trees (Fig. 6k)
The robot lawn mower treats trees as obsta-
cles. However, where any tree roots project
above the ground to a height of less than 10
cm, the area in which they are located needs
to be protected. This will prevent damage to
the roots and to the robot lawn mower. Make
sure that the minimum distance between the
perimeter wire (18) and the obstacle is 30 cm.
5.6 Connecting the charging station
Finish laying the complete perimeter wire (18)
before you connect it to the charging station.
Keep an extra length of 1 m of perimeter wire (18)
at each end so that you can make further adjust-
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