![]() ![]() The dosing timer will allow power to the pumps for a set interval and disconnect power from the pumps for a prescribed amount of time. That type of timer allows the operator to control how long the pumps are activated and how long they are deactivated. Unique QuickTree Technology system allows easy access and removal of switches without disturbing pump or plumbing. A float switch is most often used to activate and deactivate the pump.ĭosing timers are the most common type of timer found on duplex control panels. This is because the pump is activated whenever it is needed. This allows the lift station to continue to accommodate high flow rates and continue to operate after a pump malfunctions.Ĭontrol panels that do not use a timer for their effluent pump are called “on demand” panels. Additionally, these control panels can activate the second pump if the flow rate into the system is too fast or if the first pump has failed. ![]() A duplex sewage pump or sewage ejector shall automatically discharge the contents of the sump to the building drainage. ![]() These panels allow the station to alternate between pumps, so that one pump does not wear significantly sooner than the other. P-712.4 Sewage pumps and sewage ejectors. Selection tables indicate horsepower required for compressor motor. The duplex arrangement provides a standby unit if one pump should become disabled and also the. Lift stations are the most common location for these control panels. Select ejector from air volume and pressure table on page 4105 for stored air system, or page 4109 for tankless system. It consists of two individual100 pumps installed in one sump. Various models will have different approaches for the second function, but all control panels will serve those two functions. Their second function is to organize and manage the systems they power. To do that safely, these units are weather resistant to protect their electrical circuits from the elements. We can build duplex lift stations with effluent pumps, sewage pumps, and grinder pumps. The OverWatch Single Pump Series (SP Series) is a direct in-line ejector pump system designed to match pumping performance in real-time with the inlet flow. Their first function is to provide a location to joint electrical equipment to a power source. This means that the control panel will alternate which pump will be activated first for each cycle.Ĭontrol panels have two main functions. These panels are often configured such that each pump will take turns as the primary pump.
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