Grundfos UNILIFT KP250-AV-1 suits clean-water drainage from narrow sumps and pits, with a maximum flow of 186.6L/min and maximum head of 7.5m. These are separate limits. Actual flow depends on lift and pipe resistance; the 50Hz performance curve helps assess expected flow for the installation. Performance is 66.7L/min at approximately 6.8m head.
The outlet is 32mm (1 1/4") Rp / BSP female thread. Maximum particle diameter is 10mm. Suitable for water containing small amounts of suspended solids. This AV version is intended for clean water. It is unsuitable for sewage, long fibres, stones, abrasive solids or aggressive and flammable liquids.
Its vertical level switch starts and stops the pump automatically without the sideways travel of a tethered float. It is intended for clean water and must be installed upright.
The fixed start level is 180mm and the stop level is 100mm. Allow a minimum pit diameter of 250mm and height of 400mm. Install the pump upright. With the supplied 5m cable, maximum installation submergence is 2m. Keep at least 3m of cable above liquid level.
The pump uses a 220-240V single-phase, 50Hz supply and comes with a 5m cable and Australian plug. Suitable liquid temperature is 0-50°C and pH is 4-9. Internal thermal overload protection stops the motor if it overheats and resets after cooling. Keep the inlet covered during pumping and do not run dry.
The stainless-steel housing and semi-open stainless-steel impeller provide a compact, corrosion-resistant drainage pump. Pumped liquid flows through a cooling jacket around the motor, helping cool it during partly submerged operation. Two lip seals with grease between them seal the shaft.
Two-year manufacturer warranty, subject to Grundfos warranty terms and applicable consumer rights.
Grundfos UNILIFT KP Official 50Hz Performance Curve
KP Installation & Operating Instructions
