It takes around 30 minutes in real time to clean it. I guess it flushes with real water and then has a dryer to dry the cat litter. Hahaha!
We have tried every self cleaning litter box on the market…but this one just looks to darn complicated.
IM so sorry for your loss … it almost sounds like feline leukemia or feline aids... we had 2 litter mates die from it... And the symtoms you describe sound all to familar ... You might contact your vet and ask questions... If you have other cats, this is a highly contagious desease.