Praher Plastics Aquastar Easy Bedienungsanleitung Seite 33

Switch for pump-delay and pump-trigger SW4
With SW4 you can handle the functionality of the filter pump
If you switch the first switch (pump trigger) to „ON" position the backwash cycle will only start if
the pump is switches on. If the pump is of, the backwash cycle starts if the pump switches already
on. If the Pump switches off while a backwash cycle is running, a new backwash cycle will be
triggered it the pump switches already on. If this switch is "OFF" (standard position) this function is
also switched off. It can be switched of if the Aquastar is controlled by a PLC or another control
system.
If you switch the second switch (pump delay) to „ON", the pump off delay time is expanded to 20
seconds. If it is "OFF" the pump delay time is 5 seconds.
The pump delay time is the time between the pump switches off and the valve lifts up
You can expand that time if the pipe lines are very long.
Setting of the electric pressure switch SP1
You have to set it if the option presser Sensor is installed
The maximum operating pressure in the valve is measured by an electronic pressure switch. The
activation pressure of the pressure switch is set by switch SP1 on the circuit board.
For changing the activation pressure, turn the arrow by using a screw driver clock/or anti-
clockwise, until the arrow shows the wanted pressure (see chart)
Position bar
0 0,5
1 0,6
2 0,7
3 0,8
4 0,9
5 1,0
6 1,1
7 1,2
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Position bar
8 1,3
9 1,4
A 1,5
B 1,75
C 2,0
D 2,5
E 3,0
F 3,5
SP1
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