Technical data of the MHI1300 centrifugal pump: Power: 1300 W; Voltage: 230 V / 50 Hz; Protection class: IPX4; Max. delivery height: 55 m. Max. pressure: 5.5 bar; Max. flow rate: 6000 l/h. 5 x wheels, robust and rust-proof stainless steel shaft, max. suction lift: 8 m for 2.54 cm and with a non-return valve. Max. water temperature: 35°C. Suction and pressure side connection: 2.54 cm internal thread. Integrated thermal motor protection switch. Cable length: 0.60 m; Total weight: approx. 12.5 kg; Size: Length: 44 cm. Width: 15 cm. Height: 17 cm. Includes: Original packaging in a box. Important information: The pump should be placed near the well hole if possible to achieve the max. suction height. Please equip the suction pipe with a non-return valve to ensure the water column is maintained. Please fill the pump and the suction pipe with water before starting up, otherwise there is a risk of dry running. The suction line should have a diameter of 1 inch to 1 1/4 inch, but not smaller or larger. Otherwise the pump cannot provide the corresponding power or pressure. If you think that the pump is not sucking in water, please consult a specialist and look for possible installation errors.