13
EN
Set switching point of Soil
Moisture Sensor:
Select presetting of
switching controller:
Display soil moisture:
Usage:
5. Operation
The water requirement of plants depends on many factors, e.g.
type of plant, soil, sunshine, wind. To find the suitable switching
point of the Soil Moisture Sensor, it has to be observed during
irrigation over a period of approx. 1
-
2 weeks and re-adjusted
if necessary. If the soil moisture has exceeded the switching
point selected, the watering program of the Water Computer
is terminated prematurely or an outstanding irrigation process
blocked.
On delivery, the switching controller is set to the centre position,
which is suitable for normal non-forest soils (loamy humus).
For sandy soils the switching controller 8 should be preset
slightly to the right (damper).
For potting soil the switching controller 8 should be preset
slightly to the left (drier).
Increase soil moisture level:
v If the soil seems too dry for an application (type of soil or plant
species), turn the switching controller 8 to the right towards
“Damp” (e.g. with a coin).
Reduce soil moisture level:
v If the soil seems too damp for an application (type of soil or
plant species), turn the switching controller 8 to the left
towards “Dry” (e.g. with a coin).
The soil moisture can be displayed at any time with the Soil
Moisture Sensor. When the Soil Moisture Sensor shows
“Damp” A, watering is not carried out.
v Press indicator button 9.
The soil moisture value last measured is indicated for 1 minute
with the relevant LED (
“Dry” 0
or
“Damp” A
).
During the minute in which the measured result is displayed, the
switching controller can be used to find the relevant switching
point by turning the switching controller until the display changes
from “Dry” 0 to “Damp” A or vice versa. If the display does
not change, the ground is either very dry or very damp.
To keep the soil moisture level as constant as possible, irrigation
should be carried out with short watering cycles and short wate-
ring times. This especially applies to flower boxes on balconies,
which have a watering time of < 5 min.
8
0 A
8
0 A
9
