Float Switch Connection; Commisioning - Graf 350021 Notice D'installation Et D'utilisation

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4. Installation and assembly
4.6

Float switch connection

The float switch cable from the underground tank is passed through the empty conduit to the mains water
back-up supply console and the special double plug is connected to the 230 V socket. The 3 way valve is
then connected to the special double plug.
The float switch is positioned in the tank that the float head is freely buoyant approximately 10 to 15 cm
above the bottom of the tank when fully extended, the yellow counter weight is positioned approximately 20
cm above the float head.

5. Commisioning

Before the commissioning of the system all of the inlet and outlet pipes must be thoroughly rinsed through.
Small foreign objects up to 0.2 mm can cause substantial damage to pumps and other equipment.
Never run pumps without water in the system!
Remove the threaded fill plug from the pumps' body and completely fill the housing with water.
Filling plug
Then also fill the suction pipe with water. To do this, the cistern side end of a pipe is connected to the suc-
tion pipe (remove the basket) and an outlet in the house is opened. Be sure that the red 3 way valve is set
to automatic [A]. By opening the inlet valve on the filling hose the complete system is filled with water until
the water emerges free of air bubbles. With this method the system is reliably bled of air and is now ready
for operation. Now make the connection of the Controlmatic to the mains socket (230 V / Fused 16 A) and
the system will begin running. If the pump does not run or cuts out after a short time, then press the reset
button on the control automatic. This procedure is to be repeated until the water emerges without air bub-
bles at the outlet which is then closed, the pump will reach it's maximum pres-sure and stop automatically.
If it is not possible to fill the suction pipe with this method then it is also possible to fill it at the mains water
back-up supply console, to do this the flow valve of the suction pipe in the tank must be opened. The filling
must continue until the water emerges at the cistern end. The system may now be put into operation as
described above.
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