Wilo TWU, 4.08-05-DM-C-QC, Borehole Pump

Description

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

To pump water from boreholes with a maximum immersion depth of 200 m and max. 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): 4 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): 31.1 m,
• Optimum delivery height (Hopt): 22.05 m,
• Minimum fluid temperature (Tmin): 3 °C,
• Maximum fluid temperature (Tmax): 30 °C,
• Number of steps: 5

Engine Data

• Mains connection: 3~400 V, 50 Hz
• Rated power P2: 0.75 kW
• Rated speed n: 2840 1/min
• Insulation class (IEC): B
• Rated current IN: 2.2 A
• Starting current I: 9.3 A
• Power factor cos φ100: 0.75
• 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: 595 mm
• Height: 98 mm
• Width: 98 mm