Automatic cut-off for pumps at a community living facility
Hello all,
We have a residential development with 22 independent villas. Each villa is provided with an underground tank with float arrangement for water storage. A 2 1/2 " ring main (a loop) runs in the entire plot, from which the connection to each underground tank has been tapped-off. The ring main was connected to a municipal supply main.
Due to scarcity of water in the area, the municipal connection now a days are of no use, we have dig three open wells in the compound, with good yield. The municipal connection has been blanked-off. The intent is to pump water directly from these wells to the loop, and hence supply to each villa.
We plan for water supply 2 hrs a day, one in the morning and one in the evening. We plan to initiate the pumping manually (house keeping staffs are available).
What I would like to know is how to cut off the pump automatically when all the independent tanks in the villas are filled up. (We have a float arrangement in each of these tanks). What kind of control device shall be used for the same purpose?
I assume that when all the tanks are filled up and all float valves are closed, the pressure inside the loop increases and shall reach the rated head of the pump. Any device to read this pressure and give a signal to the pump to turn off shall do the needful I suppose. Again there are 3 pumps in 3 wells, which we plan to operate in alternatively, giving each well enough time for yielding back.
We shall turn on each pump in this manner, but we need a system to put the pump off when all the villa tanks are filled up.
Kindly help.
Tankyou.