New dishwasher drying fault with quality 3 in 1 tablets

[Trilobite]

Re: New dishwasher drying fault with quality 3 in 1 tablets

spoon261 wrote:
Anyway, it got me thinking, the Siemens I had and the Bosch Logix have a heat exchanger, this is used to store the heat from the main wash and uses it to pre heat the rinse water before it hits the items you are washing. The heat exchanger is only available on top of the range models.
This warm water might be tricking the tablet in to thinking it’s on the final hot rinse. Of course we do not even no if the Siemens has 2 hot rinses or not, the user guide tells you nothing when on automatic modes.
All I do no is theirs no way the Siemens can have a cold rinse due to the heat exchanger. And at the last count you always have at least 2 rinses in a program that includes drying. My AEG non automatic programs have a cold rinse followed by a hot rinse like all dishwashers did on their normal (non automatic) programs since they have no heat exchangers.

I think we can rule out a ph or water hardness problem, since my new AEG and my 15 year old AEG had no problem with 3 in 1 tablets . The old AEG was made ages before 3 in 1 tablets had even been thought of.

Two things:

The old AEG might have had a heated dry cycle (heater switching on), thus causing the dishes to come out much drier than the Siemens

The Bosch/Siemens models with heat exchanger: when they were advertised in the brochures the blurb went something like this:

‘the main wash heat at 65*C is transferred to the heat exchanger, to give the first rinse a starting temperature of 50*C. The process is repeated to give the final rinse a starting temperature of around 40*C…’

So the intermediate rinse may well be to warm for the 3-1’s, causing premature dissolving.

Another thing is, that for the condensation-drying effect to work properly in the Bosch/Siemens models, they have to be fed with cold water.

[spoon261]

Re: New dishwasher drying fault with quality 3 in 1 tablets

I never new the heat exchanger was that efficient, so its making sense now.

I have always connected my dishwashers to a cold water supply.

[Martin]

Re: New dishwasher drying fault with quality 3 in 1 tablets

Here’s a little 3 in 1 tablet (or 4 in 1, 5 in 1, Fairy active Bursts) test you can try at home : –

At the completion of the main wash cycle (after the machine has drained prior to the first rinse) open the door. Let the steam dissipate then take a look to see what’s happened at that stage to the tablet?

You might be surprised at your findings? 😯 😉

[Trilobite]

Re: New dishwasher drying fault with quality 3 in 1 tablets

Ahhh, you’re suggesting that there will be no evidence of the tablet being there. That is why some detergents say to use the dispenser, and if the tablet does not fit, to use the cutlery basket – but not to use a programme which has a prerinse, as the tablet will be partially washed down the drain before the main wash.

But with the Finish 3in1’s, or 4in1’s, or 5in1’s, there may be evidence – in the form of the whitish, waxy powerball. This is supposedly not to dissolve fully until the final heated rinse.

With the red powerball “Classic” tablets, there should be no evidence, as the powerball in this case is a ‘stainsoaker detergent’ that is designed to dissolve, even in cold water. Fairy Active Bursts will perform the same way, as likely will the Supermarkets own brands.

[Penguin45]

Re: New dishwasher drying fault with quality 3 in 1 tablets

Buy some of these products. Buy/borrow/steal two pint glasses. Fill them with water. Take a Burst and a tablet. Drop them one in each glass, together. The Burst will be dissolving and doing its thing before it hits the bottom. Any of the others……….. won’t.

When UKW gets some money, we’ll film it for you and show you. One day…

Martin is probably suggesting that the tablet is unlikely to fully disslove. If you have re-read kwatts updated link on the previous page, it’s pretty clear that even the worlds biggest manufacturer doesn’t like tabs.

Penguin45.

[Trilobite]

Re: New dishwasher drying fault with quality 3 in 1 tablets

Thanks for the updated link with new bulletin excerpts.

Could Kwatt, etc. publish further extracts, or complete bulletins?

I find this all quite interesting. 🙂

[Penguin45]

Re: New dishwasher drying fault with quality 3 in 1 tablets

Trilobite wrote:Could Kwatt, etc. publish further extracts, or complete bulletins?

Probably not – bit debatable whether we should have done what we have. You might note that we haven’t credited the sources……

Trilobite wrote:I find this all quite interesting. 🙂

What is fascinating is what the public are allowed to believe, what we independants know and later find out to be true……. Anyway, if we can debunk a bit of what’s going on, that’s fine by me!

Penguin45.

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