Wilo TWU, 4.08-07-DM-C-QC, Borehole Pump

Description

Fully submersible, multi-stage submersible pump with radial or semi-axial impellers in sections for vertical or horizontal installation, with built-in non-return valve. Corrosion-free single-phase or three-phase AC motor for direct start with water-glycol filling. Hermetically sealed with enamel insulation of windings, resin impregnated and self-lubricating bearings. The motor is cooled by the pumped water. Therefore, the device must always be used submerged. Horizontal installation must be carried out in combination with a cooling jacket.

For pumping water from drilled holes with a maximum immersion depth of 200 m and a maximum sand content of 50 g/m³. The QC version is equipped with a quick-connect cable for easy and quick replacement of the power cable.

Hydraulic Data

• Minimum Effectiveness Index (MEI): ≥0.4
• Maximum operating pressure PN: 5 bar
• Maximum sand content: 50 g/m³
• Maximum immersion depth: 200 m
• Maximum flow Qmax: 13.0 m³/h
• Optimal flow Qopt: 7.2 m³/h
• Maximum delivery height Hmax: 43.4 m
• Optimum delivery height Hopt: 32.97 m
• Lowest liquid temperature Tmin: 3 °C
• Highest liquid temperature Tmax: 30 °C
• Number of steps: 7

Engine Data

• Mains connection: 3~400 V, 50 Hz
• Rated power P2: 1.1 kW
• Rated speed n: 2840 1/min
• Insulation class (IEC): B
• Rated current IN: 2.95 A
• Starting current I: 14.3 A
• Power factor cos φ100: 0.76
• Maximum breaking frequency t: 20 1/h
• Motor diameter DM: 97 mm

Cable

• Connection cable length L: 1.75 m
• Cable cross-section: 4G1.5 mm²

Material

• Pump housing: Stainless steel
• Impeller: PPE
• Shaft: Stainless steel
• Engine housing: Stainless steel

Installation Dimensions

• Pipe connection on the outlet side DNd: Rp 2

Measure

• Length: 690 mm
• Height: 98 mm
• Width: 98 mm