Husqvarna Automower 210 C Technical Manual page 72

4. AUTOCHECK, SERVICE PROGRAM
The purpose of the ultrasonic sensors is to reduce the
mower's speed before a collision with obstacles that
are not protected by a boundary wire.
To check the ultrasonic sensors in Autocheck:
1. Place the Automower
towards a wall, for example.
2. Check that the given distance varies between 40
and 300 cm (16" and 120").
Another recommendation is to finish the test by also
carefully placing a finger against one sensor at a time.
A functioning sensor vibrates, which you should be
able to feel with your finger. Make sure that the main
switch is in the ON position.
For additional testing of the ultrasonic function:
1. Place the mower on an open grass surface with
only one "test object" closer than 3 m (9.5 ft).
2. Go to the Quick check function (press and hold the
0 button). Press YES until you see the value for
Ultrasonic distance.
3. Point the mower toward the test object (perhaps
an object with structure, e.g. a tree) at a distance
of one metre.
4. Check that the distance displayed on the mower
matches with reality +/- 20 cm (8"). Perform this
test on one sensor at a time, by covering the other
sensor.
The distance is measured from the mower body and
varies between a minimum value of 40 cm (16") and a
maximum value of 300 cm (120").
Note! If possible, ultrasonic tests should not be
performed indoors and/or directly on hard, smooth
surfaces, since the ultrasound risks being incorrectly
reflected. Even when there are no objects in the area
of the mower, in these cases the measuring value can
incorrectly display 40 cm (16").
Manual test: Loop
In order to test the loop signals and to receive useful
values the test must be performed where there is a
boundary wire and a charging station installed. It must
be a test surface of at least a few square metres
around the charging station. It also requires the mower
to be connected to the installation.
The values for the different loop signals are shown in
the Loop signals box. These values are an indication of
how well the loop system is functioning. The loop
signals can be measured through the front or the rear
loop sensor. Select which sensor is to be tested by
checking either Front loop sensor or Rear loop sensor.
Point to a value or a heading and the relative field and
loop are shown in the picture at the bottom of the
screen.
72 - English
® on a flat surface pointing