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I had this model when i lived in B'More and it was one of the best dishwashers I ever used. The cutlery and silverware basket on the door really makes the lower rack more capable of handling huge,packed loads. I am parcel to the GE tall tubs but this particular W'pool was a great model for real dirty loads.
 
goose865--new Kenmores by Bosch

I saw these online the other night when I was parusing new products. These are the Bosch models with the base that isn't stainless Steel tub and the rest of the sides are. The economy, prive-value models so to speak.
 
Well the Jetstream Column is rather simple. During the wash cycle the bellows on top of the lower arm cap expands to mate with the bottom of the column. The water under pressure gains velocity since the column is tapered. The jet comes out the top and the middle arm has a receiving cup under it in the center. It floats since its self centering to make sure the wash arm gets the full amount of water into it. In my Whirlpool I also had the tower on the upper rack that would send a jet of water into the deflector disc at the top of the tank. The jet was angled in such a way that the water coming out the tower would shower on the top of the load.
The PowerClean module is also simplicity in design. It uses a 1/3 hp motor that spins at 3450rpms. Water enters the machine and as the water enters the pump it passes thru a course strainer, then into the lower intake area and pulled into a macerator that pulverizes food particles, then the water is pulled thru a sizing plate. Water passes thru that plate and up into the impeller where the water shot out horizontally where the water hit a wall and is moved upward. The food in the water is then sent over the wall and into the soil storage area or dead zone. On the pump cover there are vanes that catch the water and force it into the center and out thru the lower arm and into the Jetstream tower and upper arm. This happens over and over. When the dishwasher stops to drain it reverses the motor and a check ball drops and lets the soil drain out of the module and down the drain.
Newer PowerClean II modules had a fine filter over the storage area. They cleaned well. But this was when Whirlpool ended 2 rinses and went down to a purge and then a final rinse.
 
jetstream column

Thanks for the thorough explanation of how the system works. Amazing concept and they work so well. The purge versus 2 rinses also explains why the Pots and Pan cycle on mine cleans better. I pulled out the manual and in the cycle diagram only on the P&P cycle, it actually does 2 rinses, all of the others do the purge and then final rinse. I guess this helped it get it's "energy star" rating. Do the newer models have a shorter heated dry cycle? Even with Jet-Dry and heated dry on, the dishes still have some water on them unless they sit in there for a long while after. Again, using the mid-90s KM at my parents house, the dishes are almost too hot to touch immediately following a cycle.
 
gr81nknox

Go back and re-read your manual. I"m assuming it's a PowerClean dishwasher that's not a Tall Tub. Read what it says what happens when the Hi-Temp wash option is selected. It SHOULD say this option adds heat, time, and water to the cycle. Which translates to the purge is converted to a full fledge rinse. Heavy soil would be WWPRD. With high temp it would be WWRRD. Normal wash would be WPRD and high-temp WRRD
 
Actually, in mine, the Normal Wash with Hi-temp is RWRRD. The first R is quick. In the Heavy, the manual says to include detergent. I put a little detergent in the open dispenser on the Normal w/Hi-temp anyway,
 

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