Borehole Pumps are used in irrigation systems when ground water is used as the source for your irrigation system. Using ground water to run your irrigation system provides an extremely cost effective return on your investment, as this means a big saving on your utility bill. Mirrigation SA provides a highly qualified service to suit all installations and servicing of Submersible Pumps.
The amount of water available from the ground water source, be it a well, a borehole or a spring will determine whether water can be used directly from the source, or whether water storage tanks have to be used.
When a borehole or well delivers enough water, Borehole Pumps can be used to singularly supply the irrigation system with water. The water supply from the Borehole Pumps will feed the irrigation system directly. All Borehole Pumps can be started by your irrigation controller, a water flow switch or by a pressure switch connected to a suitably sized pressure vessel or pressure tank. The recommended solution, however, is the installation of a Variable Speed Drive (VSD) to control booster pumps. This is the most energy efficient way to control Borehole Pumps or centrifugal pumps delivering a constant pressure water supply.
When the yield of the ground water source is too low, however, Borehole Pumps must fill water storage tanks in order to supply the irrigation system. This water is then fed to the irrigation system by a booster pump. Booster pumps may also be Borehole Pumps, installed inside the water storage tanks.
The correct electrical control system for Borehole Pumps must always have protection installed for running dry, as well as for running against a closed head. A running dry situation may occur when the ground water source is tapped beyond its yield. This will require a time delay protection circuit to allow the water source to recover its capacity, when the pump will automatically restart to continue filling the tanks. A running against a closed head situation may occur when your irrigation controller fails to open a valve, due to a break in wiring to the valve, or valve coil failure. This will require a protection circuit that will deactivate the Borehole Pumps until the fault is corrected.
Mirrigation SA offers a free consultancy service and can assure you of the most professional and cost effective installation and service of your Borehole Pumps.