3 Separate the floating part (D - fig. 1) from the container part (E - fig. 1) with a soft twist. (Fig. 2)

4 To set the minimun level of water (the moment the motor turns on) slide the container part (E - fig.1) trough the nil cord, taking care, placing it to a midle of tank height. This setting allows having a water reserve in case o energy supply fail, the motor works for short periods and avoids the remotion of sediments in the tank floor.
To set up the maximun level of water (the moment the motor turns off) slide the floating part (D - fig. 1) trough the cord, placing it in the top of the tank. This setting allows maximun water level.
Then insert the nilon cord into the little hole of the switch, and tie it(C - fig.1)
In this case we connect the red and white cables (fig. 3)

5 Proceed the same way as in point 4 but wiring the red and black cables (fig. 3), so it will function inversely, the floating part (D - fig. 1) makes the motor turn on and the container part (E - fig.1) makes it stop.

NOTE: In both cases  (Points 4 and 5) you must check the container part it's filled with water(E - fig.1)

6 This setting is important for those who have a system of cistern for public water supply and high placed tank in combination. You need to conect two devices in serie (fig.3). This setting avoids the motor to turn on when the low placed tank (cistern) is empty because of fail of common water service supply.

7 In the case you have public water suply service available, the device can de installed as a level indicator, to be abl to know the water remaning in tank