What is a Submersible Bore Pump?

A submersible bore pump / deep well pump / groundwater pump consists of an electric motor combined with the pump in a single unit. Submersible pumps including the motor are installed completely underwater so they don't need to be primed. They only push water and don't suck the water. Normally a submersible pump is long and cylinder shaped to fit inside a bore or well casing. Submersible bore or well pumps may also be laid on their side at the bottom of a dam, river, lake, stream, billabong, etc. Alternatively it can be mounted underwater to the side of a pier post.

If a submersible pump is down a 4" bore or well or a hole which only allows a small gap for the water to pass between the motor and the wall then this is enough to keep the motor cool. However since water needs to be forced along the surface of the pump motor to keep the motor cool, a sleeve or shroud may be required. In this situation, the submersible pump must be installed in this sleeve / shroud inside the bore / well.

If the pump is attached to a pier or piling in a dam or lake etc, the same sleeve or shroud is needed or the pump motor will overheat. The sleeve or shroud will also help to protect the electric cable from any damage.

Never lift or lower the submersible bore pump using the electric cable. Always use steel wire connected to the pump for lifting and lowering.

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