Whirlpool power, clean dishwashers
We’re introduced around 1985 the same time that they started supplying dishwashers to Sears, whirlpool made some important improvements in the pump longevity from the model posted here when they came out with the power, clean dishwasher, even the models with filters the pump was improved for longer life.
You can put a power clean module in these older dishwashers if you’d like, these older dishwasher with the filters cleaned great but they left a mess inside. If you really got carried away with the amount of stuff you left on the plates. It did have a convenient little trap to remove. It was still much easier than dealing with a KitchenAid dishwasher with the stuff went down under the filter or Maytag reverse rack dishwasher with the stuff was just all over the place and all around the edges of the pump intake.
GE and DNM dishwashers did not leave anything in the bottom, but they ground up the food and recirculated it so it ended up in the corners of the upper racks and all over the place if you really left too much stuff on the dishes.
John L