Installation and Operation Manual of the EUROMATIK.net Page 14 (40)
Functional information for the level controller for the collection tank
The level controller for the collection tank has the following functions:
a) Controlling the water level.
If, as a result of loss of water in the swimming pool, for example, by evaporation or back-flushing,
the water level drops to below the immersion electrode "Solenoid valve OPEN" (Terminal 45), the
solenoid valve (Terminal U9) opens and the fresh water flowing in leads to the water level being
raised. As soon as the rising water level reaches the position of the immersion electrode "Solenoid
valve CLOSED" (Terminal 46) and touches the appropriate electrode, the solenoid valve closed the
supply of fresh water.
b) Dry running protection of the filter pump.
If the loss of water in the collection tank, for example, by back-flushing, drops the water level down
to below the immersion electrode "Dry run protection, pump OFF" (Terminal 44), the level
controller switches the filter pump off so that it does not get damaged as a result of water
shortage. As soon as the water level once again rises to the height of the electrode "Dry run
protection, pump ON" (Terminal 45) and touches the said electrode, the level controller switches
the filter controller on automatically.
c) Overflow protection (forced run operation).
If as a result of water penetration in the swimming pool the water level in the collection tank rises
and touches the immersion electrode "Overflow protection ON" (Terminal 47), the level controller
switches the filter pump on automatically. Now, the water is pumped back into the swimming pool
and thus, unnecessary loss of precious water is avoided. The immersion electrode "Overflow
protection ON" should be placed a few cm below the overflow level.
Other options for the settings are given under: "Configuring the level controller".
Swimming pools with skimmer
A mini float switch must be used as the sensor. The cable of the float switch
can be extended to a maximum length of 50 m with a cable provided on-site (2 x
0.75 mm²). Please note that the connection must be made so that it is water-
tight. The connecting cable of the float switch should not be laid along with other
power lines.
In this operating mode, time monitoring is automatically active in conjunction
with the mini float switch. This adjustable minimum time interval prevents
frequent switching operations as a consequence of wave movements in the
swimming pool water. Other options for the settings are given under:
"Configuring the level controller".
In normal mode of
operation, the water level
oscillates between the
electrodes "Solenoid valve
CLOSED" and "Solenoid
valve OPEN"
The difference in height
depends on the specific
conditions in the pool. In
order to achieve adequate
time gaps between the
switching operations, a
minimum of 5 cm must be
ensured.
Dry-run protection: Pump OFF
Dry-run protection: Pump ON
Function of the immersion electrodes
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