Ge PotScrubber
Beautiful machine for those that had a filter in the back. The rest are a perfect example of hubris, insanity, causal indifference and a deliberate insult to the human species. Just thinking about them makes my blood boil, despite their simplicity.
Why so?
The design is fundamentally flawed. The use or a rubber vs molded sump means the machine has to retain half a gallon of water inside it at all times. Made worse by a wide pump designed for volume vs pressure. That half a gallon then increases the water needed to dilute the carry over. Because the heater runs continuously in the wash, I've seen the sump literally turn to mush over the years but not the permatuff tub and door liner.
The shredder was literally a single steal wire that would break off after a few years of use. This would then allow debris to clog up the impeller grate, while letting things like small seeds through which would sometimes result in the drain gate not closing all the way gradually letting all the water or the spray arm getting stuck from a seed mid cycle... nothing like a 45 minute main wash where the water leaves letting the dishes bake.
Which takes me to the drain flapper, because draining involved blocking the exit, it resulted in high pump pressure where over time the drain valve would start to leak. Also I have seen the flapper itself deform.
While the mid 80s potscrubbers often lasted 30-40 years, the BOL-MOL models were awful performers and used tons of energy while leaving detergent residue behind.
The above 2 pump system would have solved all these problems.