![]() PLC controls can be enhanced with an HMI (Human Machine Interface) Touch Display to directly interact with sensors, valves, pumps, motors, and more. The controls can be purpose-built, a PLC or programable I/O. ![]() It is highly recommended to have separate circuits for both pumps and the alarm, totaling three circuits. If one breaker is being used for the incoming pump power for both pumps, it needs to be sized for the possibility of both pumps starting and running at the same time. The alarm must be installed on a separate electrical circuit, separate from the circuits feeding the pumps. The next time the lead float is triggered, the other pumps will assume the “lead” role. At this time, the pump(s) will continue to run until the stop float is lowered to the stop position. If the liquid reaches this float, the lag pump will turn on and the alarm will sound, warning there is a system problem. In a three float system, the third float is the lag/alarm float. The lead float is the float that runs whichever pump happens to be called on for at that cycle. The stop float is the float that turns off whichever pump was called on to run. There are some systems that do use four floats, separating the lag and the alarm function. The alternating control panel is typically operated by three control float switches: stop float, lead float, and lag/alarm float. If one pump needs to be serviced, the system remains automatic by utilizing the lag pump. In wastewater and sewer applications, the peak flow needs to be able to be pumped by the lift station even if it never occurs.Īn alternator controlling the duplex system allows the pumps to cycle between starts, resulting in even wear on the pumps. ![]() The duplex design is often referred to as lead/lag systems because the standby pump (lag) is activated as demand exceeds the capacity of the lead pump or if the lead pump were simply to fail.įor example, a typical design requirement for pumping wastewater is that a single pump will discharge more than the peak inflow. The duplex pump system is one of the most common configurations in a pump station design, providing efficiency and redundancy. Duplex systems are also used in large volume stormwater pump stations, as well as when redundancy is desired. Replaces failing 2 hp centrifugal grinder pumps or other 1 hp SPD pumps.In Wisconsin, duplex pump systems are required by code in commercial buildings when there are three or more water closets or more than 20DFU’s draining into a sewage basin. Indoor Station: Grinder Pump Designed for Basement InstallationĮ/One's IH091 (aka Indoor Unit) simplex grinder pump system is designed for installation in the basement or mechanical room of the home.Į/One's Upgrade pump is designed for drop-in replacement of a pump in an existing low pressure sewer system. Several tank heights are available to accommodate capacity and site requirements.ġ pump | Fiberglass tank | Various diameters/depths available The fiberglass tank allows for a variable height for the inlet. The Gatorgrinder is an economical simplex grinder pump station popular for warm climates. Gatorgrinder: Fiberglass, Open-Wetwell Tank Simplex, duplex, triplex (3 pumps) and quadplex (4 pumps) stations are available. W-Series stations are open-wetwell tanks with the pump(s) on a stand and tanks are available in PE or fiberglass. The W-Series is E/One's most flexible line of grinder pump stations. W-Series: Open Wetwell Grinder Pump Stations Tank capacities range from 70 to 500 gallons. Simplex and duplex grinder pump stations are available. Station heights are available to accommodate shallow to very deep burial requirements for cold climates. The D-Series tank design features a dry accessway pumps are mounted on a transition that separates the wetwell of the tank. D-Series: Grinder Pump Stations with a Dry Accessway Tanks are available in HDPE, PE, FRP or fiberglass.
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