I bought a fecal pump 7 years ago for the rare (2 times a year) pumping of the hole of the luftkloset. It is inexpensive, t. There was no systematic work. Literally in the first 10 minutes of work, the UZO worked. I pulled out the pump "as it is", wrapped it in ten packs and carried it to the warranty. There, he apologized for using the pump as intended (according to the instructions) and demanded satisfaction. They tried to argue with me, but you understand that it is difficult to argue with me on this issue, especially since the reason for the work was confidently named by me. I suggested to disassemble the pump immediately and make sure the electrical part is non-hermetic. The smell in the workshop was such that it was no longer possible to object to the servants.
A few days later I was returned a thoroughly washed, repaired pump. From him, he carried air refreshers for toilets - apparently poured out not one balloon. All these years the pump works properly, no problems.