Translation of the Original Operating Instructions
cut-out feature of the pump in the case of dry running or absence of water, which
means if the volume of the water being discharged is insufficient or if no water is
being discharged at all. This will prevent damage to the pump caused by over-
heating.
8.2.
Functioning
Opening a water tap or any other consuming component will lead to a drop of the
pressure inside the pipe system. As soon as the preset cut-in pressure is
reached, the electronic pump control will start the pump. Following the closing of
the consuming component, the pump will continue to run until the pressure in the
system stops to raise, subsequently it will cut the pump out. The pipe system will
then be subject to the max. attainable pressure of the pump.
The current working pressure of the device is indicated by the blue light on the
right side of the control panel. As soon as the pump stops, the blue light switch
off after a few seconds.
8.3.
Cutting out in the case of dry running or absence of water
In the case of dry-running or the absence of water, the electronic pump control
will cut the pump out. In addition, the red "Fehler" (Error) warning indicator will
light up. This protection feature will prevent another automatic start-up of the
pump. To resume operation, the "Start Pump" key of the electronic pump control
has to be depressed. Before doing so, please make sure to eliminate the cause
of the dry running.
Please note: the dry run protection can also be activated by a too low flow rate
during operation (<250 l/h).
8.4.
Setting the pump pressure
The switch-on pressure of the electronic pump control is preset to 1.6 bar. This is
indicated by the green "MIN" indicator lighting up. Experience has shown that this
value is ideally suited for most installations. Should any modification of this set-
ting be required, you must switch off the pump by pressing the "STOP" button
and then keep the "CUT-IN" button pressed for 3 seconds. Then the green indi-
cator light that indicates the currently set switch-on pressure starts flashing. By
pressing the "CUT-IN" button again you can change the value for the switch-on
pressure in ascending order, the selected switch-on pressure value is indicated
by the flashing of the corresponding LED. If the "CUT-IN" button is not pressed
for more than 5 seconds, the correspondingly selected value is saved and the
pump returns to standby mode and can then be restarted by pressing the "ON"
button. To store the start-up pressure, you can press the "CUT-IN" button for
three seconds.
In this context, please note that a modification of this kind will only affect the
switch-on pressure of the pump, but will not cause any pressure increase inside
the pipe system. The cut-out pressure will always be the max. pressure of the
pump and isn´t changeable in this mode.
8.5.
Protection in case of small leaks
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