W-Series | WH471 & WR471 Grinder Pump Station
The new WH471/WR471 is one of E/One's largest-capacity grinder pump stations. This station offers a capacity of 476 gallons and can handle flows of up to 2000 GPD.
Drawings & Installation Instructions
Recommended Alarm Panel
Additional alarm panel options are available.
E/One's WH471/WR471 grinder pump station consists of an Extreme series grinder pump inside an open wetwell tank. The grinder pump, motor controls and level-sensing are integrated into a compact unit, easily removable for service.
- The WH471 is the “hardwired,” or “wired,” model where a cable connects the motor controls to the level controls through watertight penetrations.
- The WR471 is the “radio frequency identification” (RFID), or “wireless,” model that uses wireless technology to communicate between the level controls and the motor controls.
Solids are ground into fine particles that pass easily through the pump, check valve and small-diameter pipe lines — even objects that are not normally found in sewage, such as plastic, rubber, fiber, wood, etc. The 1-1/4" discharge connection can be adapted to any piping materials that meet local code requirements. The internal check valve assembly, located in the grinder pump, is custom designed for non-clog, trouble-free operation.
The tank is made of tough, corrosion-resistant polyethylene. Designed specifically for low pressure sewer applications, the optimum tank capacity of 476 gallons provides ample storage. A single WH471/WR471 can accommodate flows of up to 2000 gallons per day.
Stations are available in several heights to accommodate various burial depth requirements. See drawings (above) for more information. E/One requires the installation of its stainless steel UNI-LATERAL to prevent backflow from the sewer system from entering the grinder pump station.
Motor: 1 HP, 1725 rpm, high torque, capacitor start, thermally protected, 240 or 120 volt, 60 hertz, 1 phase
Inlet Connections: 4" inlet grommet standard for PVC pipe. Other inlet configurations available from factory.
Discharge Connections: Pump discharge terminates in 1-1/4" NPT female thread. Can easily be adapted to 1-1/4" PVC pipe or any other material required by local codes. E/One requires the installation of its stainless steel UNI-LATERAL to prevent backflow from the sewer system from entering the grinder pump station.
15 gpm at 0 psig
11 gpm at 40 psig
7.8 gpm at 80 psig
For a standard 240V single-phase installation, a dedicated 30A breaker is required, with #10 wire, to the E/One panel. You need to bring L1, L2, N and Gnd.
If only 208V power is available, a buck boost transformer is required to boost 208V to 240V. The E/One pump requires a minimum of 216V to start and run reliably.