big problems with milk foaming

Had the same problem and I found the solution. I also bought new gaskets but it didn't work. Then I took a close look at the machine, before I always thought it was the milk container, but I had it cleaned so thoroughly 10 times.

solution: Where the milk container is plugged on there is quite far behind a seal. There before it a real Michkruste has formed, although this nozzle was cleaned daily. You can't get into a normal rag cleaning. You have to bend over and remove the milk crust with a toothpick. Then plug in the container and the milk foam is fantastic again!

I hope I could help!

Hello together,

I have a problem with my 22.360, which is almost 3 years old.

When foaming, the KVA sometimes delivers excellent foam, sometimes nothing at all. On the second occasion there is also only a loud humming to be heard. I also have the impression that less pressure is built up during normal purchase. If foam has been supplied, it will steam very strongly above the connector after completion.

When hot water is supplied, steam is more likely than water and at the end appears in the menu: "empty water circuit, fill circuit" At the end of the following procedure, the MSWI usually delivered one or two cups of milk again before the humming occurred again. Now it doesn't even bring hot water anymore and I have to switch off to cancel the error message "water circuit empty, circuit fill".

milk foamer already completely cleaned, gasket on connector also changed. Coffee without any findings, quality as always.

Can anyone help?

There should be three O-rings on the connector.
There is a small hole in the bottom middle groove of the bottom connector. This groove must remain free. There is an O-ring in front of and behind it.

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Nach vielen verschiedenen KVA habe ich jetzt meinen Seelenfrieden. WMF 800 :-)

www.DeMichaelLonghi.de

Hello, maybe someone can help me. With my Esam 3550 the milk frother doesn't work from one day to the next. Not at all. If I press cappuccino, it means heating is running. Nothing is happening... Just freshly decalcified, the same clue is still coming. Tea-top works. What can that be?

Lg Isabelle

Hello,
although I read the whole thread, I couldn't find a solution for my problem. Also with me (De Longhi Pronto Cappuccino ESAM 4500, probably identical in construction to the 3500tern) the foaming function makes more annoying. I opened the "milk group" (i.e. the part above the milk container), disassembled everything, cleaned it and reassembled it. That's not it.

But here are some thoughts about the function of the milk frothing unit that could help others (before I come back to my problem below):
The whole thing seems to me to work in every respect according to the Venturi principle, where a lateral negative pressure (correctly read negative pressure) arises when something gaseous (here water vapour - I know, no gas is actually the same from the function here) flows in one direction. In other words, the steam flows through the pipe, in which there is a hole for the milk pipe from below. This causes the milk to be "carried away" by the flow of steam. The same applies to a small hole from above through which the air for the foam is carried along. With my variant the air flow can be additionally regulated by a grey slider (front) at the back above the hole, which controls the air flow with a small pin in a small seal. The position of the controller is then responsible for coarse, fine or no foam via this function.
Vapour, milk and air together then make up the foam, which emerges from the tube in the middle of the milk foam unit and runs into the cup via the attachable, angled foam tube.
Of course all this only works if the corresponding openings are free. In particular, the relatively small hole for air intake from above should be quite sensitive in this respect. All this can be cleaned after disassembling the dark grey milk foam unit, quite easy. (Sure there's a description of how this works here somewhere and I can save the description).

So, now back to my problem:
That's not my problem.
When I put on the foam unit and leave out the milk container and the foam outlet pipe, I can directly observe the steam outlet. After switching on the steam or foaming function, first this pulsating pump noise comes out for approx. 3 - 4 seconds, then the steam, but too little, or partly already condensed again to water. After finishing the steam function (e.g. by pressing the cappuccino button or after supposedly reaching the programmed amount of foam) the remaining pressure is blown off (as always) (where did I not find out - somehow downwards, possibly even into the drain bowl). I only describe this because it makes it clear that probably a good print was built up. So somehow pipe between steam boiler and outlet pipe seems to be blocked resp. narrowed. I cleaned the small hole in the outlet pipe already from the front with a long needle (or it was free).
Irgend welche Ideen oder Angaben, was ich (jetzt so inside der Maschine) machen?

PS.: Decalcified is everything.
PPS.: I have the machine otherwise without problems since 2007 in use

Hello, so which decalcifier did you use, notice one with amidosulfonic acid.
Open the KVA at the back, unplug the mains plug.
Multimeter should be available for it and the knowledge how to deal with it.
Measure the temperature fuse times through (Ohm).
If everything o.k. what I suspect, the thermal fuse bridge, then milk foam pull, if it is then o.k. the thermal fuse is no longer ok. Then immediately swap.

MfG Chris

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Alles ist Wiederverwertbar, sogar diese Buchstaben.
Keine Anfragen oder Hilfe, über E-Mail.

I know: If there are problems with the milk foaming, it's usually due to impurities or defective seals...

My Delonghi has been on his back for several years. Apart from the outer shell, no part is original anymore, apart from the water pump. So I've really spent a lot of time locating and replacing the broken parts.

But now I am at a loss.

After problems with the foamed milk I first cleaned intensively. Then the seals on the receptacle for the milk container were replaced. When everything didn't work out, I changed the milk container and the intake nozzle. Then nothing worked anymore! As I had to find out, the replacement mounting socket was not identical to my original one: The latter had grooves on the lower tube for three seals, but the new one only had two. Mistakenly, I had put the middle, green seal into a middle groove, which is also the lock for the steam. That killed two seals. Only after that I noticed the difference.

I have now reinstalled the old adapter. But the milk foam still doesn't work really reliably. Sometimes it's milk foam, then it's just a rinsal of non-foamed milk. Sometimes the cover comes to a complete standstill. Even at the beginning it takes a little while until the first milk comes. In the end there is much too little and too badly foamed milk in the cup.

I also increased the milk quantity once. But if it happens to work with the milk in a cup without stopping, there is far too much milk in the cup.

Other than that, I can also note that occasionally "heat up" appears in the display directly after the milk is taken.

The steam generator has been replaced recently. The problem can't be here?!

Ratlos...

@ Klaus:
I also had the milk foaming problem. It all started suddenly when I used the milk container with hot water and a little bit of rinse.
After the Dichtungstasuschprogramm was finished I read it again here. Thanks to Klaus his tip with the milk drop it runs now after the cleaning again toppi.
Thanks to Klaus and all who take part here

Sorry, but no one can understand that. Tip: Read it again before sending...

If I want cappuccino then very little milk comes out and more coffee then doesn't taste so good.

If I want cappuccino then very little milk comes out and more coffee then doesn't taste so good.