I've already bought the second this brand gone (for structural reasons) and both are within a few months (the second after a few days) broken. The water flows at some point in the engine compartment, which is sealed in my opinion not enough, and then at some point is Feierabend. When the water rises too high, the manual switch can no longer operate. Just then, it would be useful. Will switching to another brand. I recommend everyone buyers spend a few more euros and take a lifting unit with macerator.
