Wilo-Sub TWI 6.18

About this Product

Application · For water and potable water supply from boreholes and rainwater storage · Process water supply · For municipal water supply, sprinkling and irrigation · Pressure boosting · Lowering the water level · For pumping water in industrial applications · For pumping water without long-fibre and abrasive constituents Special features/product benefits · Simple maintenance due to rapid installation and dismantling · Integrated non-return valve · Vertical and horizontal installation possible · Standard and configurable versions available · Star-delta starting · Motor with rewindable stator Technical data · Mains connection: 3~400 V, 50 Hz · Immersed operating mode: S1 · Fluid temperature: 3-30 °C · Minimum motor flow: · Motor with hermetically cast stator: 0.1 m/s · Motor with rewindable stator: 0.5 m/s · Max. sand content: 50 g/m3 · Max. number of starts: 15/h · Max. submersion depth: · Motor with hermetically cast stator: 300 m · Motor with rewindable stator: 100 m · Protection class: IP 68 · Pressure port: Rp 2½ - Rp 3 Equipment/function · Multistage submersible-motor pump with radial or semi-axial impellers · Integrated non-return valve · NEMA coupling · Three-phase AC motor · Motor with hermetically cast stator (DM and DM/SD motor) · Motor with rewindable stator (NU 6... and SD-R motor) Materials • Hydraulic housing: 1.4301 stainless steel • Impellers: 1.4301 stainless steel • Hydraulics shaft: 1.4057 stainless steel • Motor housing: 1.4301 stainless steel • Motor shaft: 1.4305 stainless steel Description/design Submersible-motor pump for vertical or horizontal installation. Hydraulics Multistage submersible-motor pump with 4" NEMA connection and radial or semi-axial impellers with sectional construction. Integrated non-return valve. All parts in contact with the fluid are made of cor- rosion-free materials. Motor Corrosion-free single-phase or three-phase AC motor for direct starting. Sealed, hermetically cast stator, resin-impregnated, with enamel-insulated winding, self-lubricating bearing, with water-glycol filling. Cooling The motor is cooled by the fluid. The motor must always be immersed when operated. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. Cooling jacket is required for horizontal installation. Scope of delivery • Hydraulics + motor fully mounted • 1.5/2.5 m connecting cable in accordance with VDE/KTW with 4x1.5 mm2 cross-section • Single-phase version including switchbox with capacitor, thermal motor protection and On/Off switch • Installation and operating instructions