Sera impeller for P + F 400 E

An impeller, or rotor, for the sera P + F 400 filter, one piece.

What it does: the impeller is the only moving part in the pump. A magnet turns it and the blades push water through the filter. A worn impeller does not stop the pump, it slows it, so the fault shows as a gradual loss of flow rather than a sudden stop.

What it fits: this model specifically. sera lists the impellers of the P and F ranges separately for the 400, 700 and 1200, and they are not interchangeable.

Before replacing: remove the limescale from the shaft and check the blade edges. If they are intact, cleaning alone is often enough.