Pump at the cistern defective? Experiences?

Pump can be operated standing as well as lying down according to the manual.

Unusual for this design. You never stop learning.

The pump cannot be easily opened because it must remain permanently pressure-waterproof. As a layperson, you cannot possibly guarantee that permanently after opening.

Therefore, you should rather buy a new pump instead of fiddling with things for which you are not qualified.

It must always be emphasized or reminded that electricity in general, and especially in connection with water, means danger to life.

Oh, and one more question. What trips? The fuse or the RCD? If there is no RCD installed, then one should be installed, preferably yesterday.

The pump cannot be simply opened because it must be permanently pressure-water tight. As a layman, you cannot possibly guarantee that permanently after opening.

Didn't I say that or not.

Therefore, you should rather buy a new pump instead of fiddling with things for which you are not qualified.

Thanks, I can only return the compliment.

It must always be emphasized or reminded that electricity in general and especially in connection with water means danger to life.

Really? Thanks for the info

Oh, and one more question. What trips? Fuse or RCD? If there is no RCD, then one should be installed, preferably yesterday.

Perfect, I installed one yesterday

The pump cannot simply be opened because it must be permanently watertight under pressure. As a layperson, you can hardly guarantee this permanent tightness again after opening.

That's true. But the pump is already broken anyway, so you can take a look inside, learn, and experiment. It's also clear that you can't "guarantee" watertightness after a successful repair - but sealing something is not rocket science. I don't see any real danger potential because if water enters the pump, the RCD trips. Also, no people bathe in the reservoir. The risk of electric shock is therefore low and, in my view, justifiable. A basic understanding of electricity and some craftsmanship is enough to repair household appliances of low complexity. Whether it's a well pump, washing machine, or lawn mower doesn't really matter. Usually, the order of disassembly and reassembly is more of a puzzle than the technology itself. There are plenty of YouTube videos for that.