Another pump fail, this time the pump is running slightly more than a month. Electrical cable that was in the tank got damaged and I don't know what causes it.
I almost got an electric shock when I was about to check the pump operation, luckily I manage to back off before any bigger shock is felt.
Other pump running in the same tank doesn't have any problem like this, there also sign of worn on the spindle. This pump was use the most for two months total, its doesn't look good.
Close up on spindle.
That's it, I will not buy this brand until I can be sure that this will not happen again.