The industry’s only automatic, reversing grinder pump is designed to pump raw sewage in a sewage ejector application. Solids are cut into a slurry using the industry proven “scissor like” Tri-Slice ® cutter technology. This includes a rotating cutter cutting against the stationary cutter plate reducing solids down to 1/8″. The 230 Volt, 2 HP, Model 840 utilizes a vortex impeller. Every time the pump is called to run, the cutter assembly will pump a different direction as the previous rotation. This action reduces the potential of stringy material wrapping around the cutter assembly. The Shark Series® E840 should use a control panel and control switches allowing it to turn the pump on when called upon. The Model 840 is constructed with a cast iron body, enabling it to withstand the most demanding sewage ejector applications. The pump’s identification tag, handle, and hardware are made of high-quality stainless steel preventing rust and corrosion. Everything about the pump is designed in a way that allows it to hold up in the toughest sewage conditions.