Good filter effect - unfortunately defective quickly

The sand filter is to be taken without any problems in operation, the operator with the big lever is very easy, however, the label of each lever position could better legible (blue marked). The filter effect is perfect: crystal clear water.

But what about me mightily disturbs, that the plant was completely leak after just half a year and I had to admit that the screws that could tighten the inner seal, almost always have "eternal" thread, that is, by turning (note: not by me, but as standard!). This makes the water sprayed funny in 20 horizontal beams from the cover.

But that should be no problem with 24 months warranty. But is it at leisure world Garherr because the system came immediately on the grounds "reverse proof" back. So I have to prove that the machine broke down without any external assistance. Even meaningful pictures did not help, so I need an expensive experts. Another purchase Freizeitwelt Garherr comes for me on this extremely unkulanten behavior no longer in question. A company that does not accept a unique event of damage during the warranty period (not guaranteed!), I avoid in the future, because expert and lawyer costs a lot of money and time and then the anyway short summer is already over.
By the way, on the completed text module can be easily seen that here is always veered with customers. With me anyway never again.