KDTM604KPS

Automatic Washer - The world's coolest Washing Machines, Dryers and Dishwashers

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lakewebsterkid

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Sep 5, 2012
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Dayton, Ohio
After 2 weeks of using the KDTM604KPS, I figured I would give a review of my newest purchase. As many of you know, stopmeister72 recently had his machine’s filter explode, which is seemingly common. However, murando531 and Lorainfurniture have had excellent experiences with their machines. Despite this, I didn’t have the desire to purchase another Bosch given how unique the KA machines are, but also with the sentimental value and heritage of KA/Hobart running in my family. So, I went ahead and bit the bullet.

I purchased the machine from Menards and had to wait a little longer than expected since the machine had to be special ordered. Once I finally received the email, I went straight to Menards after work and picked her up! Installation was a little more time consuming than expected. Though, our power line for the dishwasher is shorter than it should be. The Bosch still excels as the easiest dishwasher I have ever installed, next the KUDS25 because of all the space under the tub, and probably the KDTM in 3rd. It wasn’t horrible, but small and stable hands are best.

Initial impressions from the machine are top notch! Quality is better than expected. Dare I say PC levels of quality. Very solid, sturdy, and ergonomic. Considering most new appliances aren’t like this, consider me very impressed. The racks roll smoothly and have a high character of quality and refinement. Loading so far has been easy. The only spot that has been an issue has been with the third rack on the right hand side. Large sauce or cooking spoons don’t seem to fit as well as they should. However, if you take the basket out, they fit perfectly. Rectangular Pyrex dishes fit well here, too. The fact that 6 tall glass cups and about 5-6 mugs can fit on the left hand side of the 3rd rack frees up a lot of space for the second rack. Speaking of the third rack, the spinning spray arms have cleaned all items in this area perfectly. However, they are a little annoying. More on that later. Second rack is very easy to load and holds quite a bit. In particular, the right side of the second rack can hold small plates, large bowls, and taller tumblers or Yetis without issue. This is a big deal for us. Normally taller cups need to be placed in the bottom rack of either the Bosch or the PC. This isn’t an issue anymore. The first rack is nice, but I feel that the tines are somewhat far apart, which limits the overall potential capacity of plates. It does seem to feel a bit small. With the silverware basket in place, you can only fit 2 large saucepans and about 8 plates before the bottom rack is full. Considering I could do the same with the PC, and hold more with the Bosch, that is a little disappointing. I think the adjusting row of racks in the front is a great concept, but I will likely follow suit of what murando531 has done, and zip tie the rack in the optimal position. The silverware basket takes a little getting used to, but ultimately is placed in a prime spot for excellent cleaning, and the spots that keep the silverware separated and prevent nesting are a nice touch.

The first cycle of the machine was Prowash with High Temp wash and ProDry off. Initially, I was shocked to barely hear the machine filling, but the real shock is to hear how quiet this machine is while running. It easily is the quietest dishwasher I have ever used. Many have said that their Bosch was quieter, but mine wasn't. The loudest part of the machine running is the drain. However, water spraying inside of stainless pots is by far the loudest part of the washing process. The motor is far more quiet than I expected. There are some complaints of motor noise, but it just sounds like a quiet refrigerator compressor IMHO. I did not stay to monitor number of fills or length of this wash, but the machine did perform a prewash with a moderately soiled load. In the morning, the load was completely clean and bone dry after the fan ran for the full 8 hours.

However, recently I was able to sit and ‘watch’ the entire wash cycle. Prowash, High Temp wash, ProDry OFF:
2:32 Initial
Prewash (9:10-9:28) - Ended 2:14
Prewash 2 (9:29-9:35) - Ended 2:06
Mainwash (9:36 - 10:43) - Ended 0:51
Detergent dispensed 2:03
Rinse 1 (10:44 - 10:54 ) - Ended 0:40
Purge (fill & drain only) - Ended 0:39
Purge (fill, recirc bottom rack twice, and drain) - Ended 0:39
Final Rinse (11:00 - 11:25) - Ended - 0:07
Dry (11:26 - 11:33) - Ended -
Fan ON – 11:33

All items from this moderately soiled load were spotless and bone dry. But I was beyond shocked to see a second prewash. This was the only time I have ever experienced this. The first load ran in the machine had heavier soils, but I did not stand around to see if it performed a 2nd prewash. Same goes for the purges as well. These are different than the ‘Eco Rinses’ that murando531 has described. Water use would be approximately 5.8 gallons for this cycle. Quite a bit more than expected.

However, while babysitting this load, I found that my third rack has the ubiquitous rotating spray tube noise. It is loud enough that it gets your attention but is not obtrusive. If there is any other noise such as TV, fans, and some other appliances. I likely will not do anything about it since it only occurs occasionally. Also, I had to add a knife to the load while the machine was running. Water from the bottom spray arm shot a good 3 feet across the kitchen onto the floor. This machine has far more pressure than expected. The fan for drying is not loud at all and sounds like a computer fan.

I have also ran Normal with ProDry off, and the main wash was about 1:20, detergent dispensed after about 10 minutes, the ‘Eco Rinse’ was about 3 minutes long and rotates through all racks while spraying for about 3 seconds per level. No sounds of cavitation while that is occurring. Then followed by the final rinse that is about 25-30 minutes long. No prewash. This cycle would have used approximately 2.4 gallons of water and left no yibbles, cloudy glasses, or residue anywhere.

I did run a ProWash with ProDry ON, and the load was completely dry as expected, even though we emptied the machine immediately after the cycle ended. I really like how the blue LED while washing turns to red when heated dry is selected. That is a nice touch.

This machine seems to do the best on silverware that I have ever experienced. The Bosch did good, the PC did good, but silverware here seems to be polished and never has any residue that is easily wiped off.

So far, this machine has exceeded my expectations. I will give occasional updates on it in the future!
 
ProDry

There isn't really a need for ProDry unless the dishes are needed rather quickly. If I let the dishes sit in the Dishwasher overnight, the machine runs the fan and dishes are dry by the morning. It isn't worth the additional electricity or potential damage to dishes. I just ran ProDry the one time to have dry dishes immediately to put them away, but also to see if there even was a difference. The air coming out of the fan vent and the dishes themselves were very warm. I HIGHLY doubt I will ever run Extended ProDry. Also, ProDry adds about 25 minutes extra.
 
your experience matches mine pretty well. outstanding! the 3rd rack really gives this dishwasher more space then one would expect it to, the ability to shift drinking glasses out of the 2nd rack offers room for larger items that would otherwise be handwashed if the first rack fills up.
 
Egress

Absolutely! Have you heard the 3rd rack whine?

Currently using up a large stash of Finish Quantum from Costco. It cleans really well, and does not suds up like Cascade products do, however, I like the addition of Trisodium Dicarboxymethyl Alaninate in Cascade products. It helps quite a bit with hard water minerals and deposits but also has some surfactant properties to help with degreasing. It's one of the closest things we can get to STPP, AFAIK.
 
I don't believe I have heard a whining noise from the 3rd rack, but the dishwasher occasionally makes a "fart" sound which I believe is the diverter valve moving. we use cascade powder.
 
Whirlpool-made dishwashers, all the way back to the pressure sensor KUDS25 will activate the “medium soil” level of the cycle program if “Hi Temp” is selected. So you got two pre-rinses because of that.
ProWash will almost always do 1 prewash, also.
Normal, to save water, will go right to MainWash with no options and soil is light enough. Even with moderate soils. Normal has a pretty high threshold to kick up to a medium or high soil sense program change.
 
Prewashes

John, do you have one of these machines? The ProWash with High Temp as posted above is the only instance I have ever witnessed this machine perform 2 prewashes other than Express. Ran Normal with High Temp today and it performed 1 prewash, with 2 full post rinses. ~4.0 gallons.
I have been nothing but impressed with this machine so far. I actually ran the machine and watched TV in the other room. Couldn't even hear the machine draining.
 
ProWash Heated Dry OFF

Ran a full lightly soiled load of dishes today.
ProWash Heated Dry OFF, no other options. Used a bluetooth/wireless digital thermometer.
Prewash 2:13-2:01
Mainwash 2:00-0:50 (reached 120ºF and maintained within 3ºF for remainder)
Detergent dispensed within 1 minute of water recirculating
Rinse 1 0:49- 0:40
Rinse 2 0:39-0:08 (reached 140ºF for 3 minutes)
Dry 0:08 - End
Fan turned on when cycle was complete

I am very happy with this. One of the biggest benefit to the Bosch over the KA was the Auto cycle which defaulted to a higher main wash temp. However, this proves my theory that ProWash uses a slightly higher main wash temp. Now, there isn't really any major benefit to a Bosch besides reliability. This will be my default setting unless there is a heavily soiled load, or someone is sick.

Also, no 3rd rack noise in this load.
 

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