:DWHU 6XSSO\ À 5DZ :DWHU ,QWDNH - WILO

Submersible pumps3" and 4" seriesSeries description Wilo-Sub TWU 3 HS• Soft starter• Undervoltage, overvoltage and short-circuit protection• Thermal overload protection of the motor and the frequency converterThe version "HS-E…“ with external frequency converter offers thefollowing additional equipment features:• Control function "CP“: Constant pressure• Avoidance of frequent switching (cycling) by leakage monitoring• Dry-running protection with automatic reset• Change of direction of rotation• Setting for max. flow and target pressure• Pressure is shown on the display• Settings, operating statuses and error messages are shown by LEDsor on the display.The frequency converter always must be installed outside the fluidwhere it will be protected against overflows!Control function "CP“: Constant pressureOperation with the frequency converter means the rotation speed ofthe unit is adapted to the current water requirements automatically.As a result, the submersible pump always delivers a constant pressure.CoolingThe motor is cooled by the fluid. The motor must always be operatedin submerged state. The limit values for the max. fluid temperatureand the minimum flow rate must not be exceeded.In cases of vertical installation, a cooling jacket must be provided dependingon the diameter of the bore. In cases of horizontal installation,a cooling jacket must always be provided .The external frequency converter is also cooled by the fluid. For thisthe frequency converter must be installed directly in the piping outsidethe fluid (overflow-proof).Options• Special cable lengths on requestScope of delivery• Hydraulics + motor ready assembled• Frequency converter• 1.75 m connecting cable approved for potable water (cross-section:4x1.5 mm 2 )• Installation and operating instructionsAccessories• Cooling jacket pipes• Diaphragm pressure vessel• Cable kits for potable and process water• Float switch• Switchgears• Connection and installation materialConfiguration• No suction mode is possible with these units!• The unit must be fully immersed in water during operation.• An adapter of Rp 1 to G 1¼ in required for installation. This must beprovided on site!Pump curvesH[m]Wilo-Sub TWU 3-...-HS..12011010090TWU 3-02..HS..80706050TWU 3-03..HS..403020TWU 3-05..HS..1000 11,5 2 2,5 34 5 6 7 Q [m³/h]0,2 0,25 0,3 0,4 0,5 0,6 0,7 0,8 1,01,52,0Q [l/s]26 Wilo Water Management catalogue – 50 Hz – Water supply – Raw water intake – Edition 2012/2013 – Subject to change without prior notice