New 2018 KitchenAid DW; KDTE304GPS

[henene4]

Why have full pre-rinses?

Asko takes this to the extreme: 8 (partial) pre-purges.

A pre-rinse only has to get as much dirt as possible into suspension. There is no full coverage of the load needed, no contact time.
The basic idea would be equal to scrapeing your plates: You don't need or want to reach everything, instead you use the least resoures possible to do as much as possible.

Same for post wash rinses: You have close to zero carry over of dirt and detergent. You only need to flush out as much possible.
And equal to a washer, 2 rinses with less water but better extraction between them will always be more efficent then one full rinse with lots of water.
The extraction between them (and as dishes don't really hold water, draining is equal to extraction) makes for the far reduced carry over and thus better dilution.

So the only time full fills are needed when heating, contact time and full coverage are vital, aka wash and final rinse.

 

[johnb300m]

1. No, GELaundry, the arms seem to run at consistent speed and pressure upon a full fill charge.

2. Lakewebster, correct me if I'm wrong; Bosch pleats their metal mesh filter cup? I wonder if that pleating may inhibit some of the self cleaning water turbulence. What I've noticed helps a lot in the WP Global Wash is the pump inlet is baffled, preventing direct suction against the screen. The GE layout currently in use, has the pump inlet un-shrouded, directly sucking against the screen. Dirt would collect there all the time, and never really release during multiple drain sessions.

3. The discussion on full rinses vs. purges and light splashes is interesting. I've now had direct experience with two brands displaying the differences of both techniques.
The GE would do all full pre and post rinses. In fact, at times it would do as many as FIVE pre-rinses.
The KA will do far less full rinses, but it does a lot of purges and "splashy" partial fill rinses.
I'm not sure if it comes down to filter system efficiency?
Because KA has pulled off the feat of rinsing off more silt with less resources than the GE ever did with far more water.
Maybe those purges get rid of a lot of residual silt and soil, preventing it from circulating around in all those full rinses?

 

[gelaundry4ever]

spray arm speed

Why do some whirlpool dishwashers have their spray arms spin faster during the middle rack arm operation after alternating?

 

[johnb300m]

No idea.
But your model, if remembering correctly, has the Kenmore version of the TotalCoverage spray arm on the bottom, which has the shifting spray pattern. That will speed up and slow down based on the pattern its in.
There's no reason the middle arm should be changing speeds unless it's malfunctioning.

 

[gelaundry4ever]

That explains it.

Mine does have the power wave wash arm. My dishwasher works normally. I use the smart wash, high temp and heated dry. What would be the spray patterns for this setting?

 

[johnb300m]

We’re done talking about your dishwasher in MY thread.

 

[johnb300m]

A peek behind the door

Yup, I did it!
I was able to modify the GE clear door I have to fit the current Whirlpool tub platform.

So enjoy this quick initial vid of the Rinse Only cycle in the KA.

http://https//youtu.be/6IJ2MJcXQII

 

[joeypete]

Wicked cool John!

 

 

[appnut]

John, thank you.  Very interesting and fascinating.  Your keeps adding water the first several seconds when it's initially spraying the top rack.  I wonder if it does that with each fill segment.  Mine doesn't do that except I think it adds between 5 and 10 seconds of more water about 2-3 minutes into the main wash.  Mine also alternates between upper and lower 2 or 3 times between the 8-10 minutes of the prewash. 

 

[johnb300m]

Bob, that's interesting that yours won't continue to add water till a few minutes in.
So far, mine has always started with the top level first on every fill, and continued to add while running. I wonder if it's to make sure the fill charge is complete.
I recon yours is the 'Clean Water Wash' so they might've programmed it differently.

The KA will alternate up and down a few times too, if it does a 8-10min pre-wash.
Mostly it's been doing a brief 4min prewash. Up, down, drain, purge, then main wash. Or sometimes it'll dump the tab right into the first fill!

I'll have to do a full load with the clear door sometime.
Busy days lately though. In time.

 

[nmassman44]

That video was good to see. I didn't realize that the jets were so tight in diameter coming from the 4 way HydroSweep arm in the base. But it does reaches up to the top of the tank. Very impressive I must say!

I too find it very annoying when someone tries to hijack a thread the way a certain someone likes to...bravo for calling them out on it!

 

[johnb300m]

KA X arm coverage

Thanks Massman44,
The X arm coverage is impressive. Almost representative of the KA hydrosweep arms of yore.
I roughed out some jet coverage of the current arm layout. It's very good looking IMO.
And the jets have surprisingly good pressure.
They indeed pelt the roof of the machine.
What I'm very pleased with is the pressure in the upper rack is much stronger than in the old GE, which clearly has been giving very good results lately in the KA.
I'm very happy thus far