Pedestal sump pumps are an older non-submersible type of pump used for removing water from buildings.Īs rising water in the sump pit lifts the float, the float lifts the rod and the rod includes an adjustable screw-clamp fitting which pushes on the electrical contact of a mechanical switch to turn the pump on. You'll notice that the electric motor that powers the pump impeller is mounted on top a tall shaft that extends well out of the water itself.The float that turns the pump on and off usually looks suspiciously a lot like a toilet tank float, connected to a vertical rod. The pump impeller is located in a bottom pedestal which is under-water. Pedestal sump pumps, such as shown in the photo, use a motor atop a pipe inside which the pump turns a shaft which operates the pump impeller. Watch out for debris or wiring in the sump pit that block movement of the float switch - your sump may fail to turn on. The submersible sump pump motor is capable of working when entirely under water.Ī submersible sump pump uses a float switch intended to turn the pump on when ground water rises in the sump pit (or flows stupidly across your basement and into the pit) where it is discharged to a storm drain or the property surface. Some submersible sump pumps, such as the one shown here at left, use other types of float switches. The sump pump float contains a position-activated switch and is connected to the submersible pump by a flexible wire. Submersible sump pumps, such as shown in the photo, use a motor housed in a water proof enclosure and a separate float that turns the pump on and off. This article describes four types of pumps used to remove water from buildings or to lower water below a basement or crawl space floor to reduce the chances of water entry. Sump pumps remove unwanted water, such as surface or ground water that leak into a building.Ī sump pump is normally installed in a pit at the low end of a basement or crawl space floor or in another location where water needs to be removed such as in a boiler pit or an outdoor well pit. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. We include specifications on pumping capacity, battery life, water consumption and other sump pump characteristics. We describe types of back-up sump pumps including battery backup sump pumps and water powered sump pumps and we list sump pump and backup sump pump equipment suppliers. This article describes the different types of Sump Pumps, and describes how sump pumps should be installed, inspected, and maintained. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest.
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