miele cm 52 00 don't make real milk foam meh

Hi Tilka01 you have a part number for the blue valve, so I can order it. MfG

Hello,
I cleaned the blue valve, but it didn't work. Steam comes, but the milk is not sucked in, or sucked in for a short time, but then runs back.
All hoses are free, partly new.
What else can you recommend to me now.
Greetings
Harald

Either open the ceramic valve and check for ease of movement and freedom from limescale or order a new one for 99€ without shipping.

The blue valve can also be different colored, it should have a small hole in any case.
As an indication, it could also be due to the thermosensor steam.
It's tricky, but try to locate the error.

Mfg Chris

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Keine Anfragen oder Hilfe, über E-Mail.

Hello,

the "blue part" turns hot milk into milk foam.
If the milk is not sucked in at all,
the mistake is somewhere else.

Greß
BS

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Ich schaue hier nur noch ganz selten vorbei.
In verschiedenen anderen Foren bin ich mit
dem gleichen Nickname zu finden, falls mal
jemand Hilfe benötigt kann ich vielleicht dort
helfen.

thanks for your answers.

I can't get the ceramic valve out of the side and can't see how the front is dismantled.

I took off the magnet cover, removed the black pieces for the milk spout and unscrewed the cover plate.
When foaming milk, only "two hoses" are active. The red one brings the steam, the white one seems to go to the ceramic valve. If I pinch the red one, there'll be no more steam. If I clamp the white one, nothing happens.
Simply thought this way...the red one blows through the milk suction nozzle in the middle. It was supposed to suck in the milk somehow. The white then goes from the valve to the nozzle and should bring air into the milk -> foam. If the milk is not sucked in, the "pull" through the red tube is not strong enough. I replaced the nozzle and that didn't work either.
Do I have a thinking error?

Gruß
Harald

Hello,

also had the problem with milk suction. When the milk outlet is hot, it wasn't possible anymore.
I assume a leak (false air intake) due to thermal deformation.

I replaced forming parts.
Milk outlet and milk intake nozzle (After that it worked much better but not yet top)

Then the steam nozzle outside and the valve inside, which opens at a certain pressure.
Now the milk suction works super again.

Only milk froth I don't get yet.
But I will test the lip valve on the ceramic valve and report about it.

To get the ceramic valve off, in my opinion at least the module in which the control element is located has to be removed in order to get to the miserable safety screw, which I didn't turn back in again by the way (holds through the plastic barb anyway).

When the safety screw is out, the barb has to be pressed carefully and the ceramic valve lifted upwards.

By the way, not only the milk suction now works like new, but also, thanks to your tips, the milk foam perfectly. It was due to the blocked valve that the ceramic valve is inserted from the outside.

In addition to the pressure valve, the following is also mentioned. There are at least two different ones. I got one with a white line on it and one with a dark blue line on it. The original had a light blue one.

The white one works so far but the milk foam is not so perfect and the coffee/milk is, for whatever reason, colder. Can anyone explain the effect? Are there actually more different valves? By the way, my hot water module has neither a white nor a blue line, but a grey line.

The dark blue valve works great with us.

Many thanks for the good advice on the forum

Hello,

the different colors should mean different spring strengths of the
valves. But until today I haven't found a clean
list or any traceable information. Occasionally an Onlineshop writes something appropriate, but also these
statements are m.E. without guarantee...

If a part of the steam escapes to the brewing unit, because the valve
does not close correctly or opens too early because of too weak spring,
will affect with certainty the milk foaming, but also the hot
water supply.

Partially, the spring strengths of the valves were also changed over the product
running time to ensure trouble-free operation.

For example, the old Melitta CI and the Miele CM5200 have a
valve with a white line - if you reorder the units now
you will get either a turquoise line or a thick blue line, depending on the shop.
Can theoretically also be that the valve at Melitta is turquoise and at
Nivona is blue although it has the same spring strength...

Also Bosch/Siemens has changed the spring strength of the Benvenuto/Surpresso B60/S60 in order to counteract the repeated
hose bursts of the steam heating.

Gruß
BS

--------------------
Ich schaue hier nur noch ganz selten vorbei.
In verschiedenen anderen Foren bin ich mit
dem gleichen Nickname zu finden, falls mal
jemand Hilfe benötigt kann ich vielleicht dort
helfen.

Thumbs up for these tips
milk foam works well again thanks to your tips.

Hello together,
still have the problem that the milk is not sucked in. Replaced the ceramic valve, without success. Even with a new valve the milk is not sucked in.

This was written here "Then the steam nozzle outside and the valve inside, which opens at a certain pressure.
Now the milk suction works again super." Which valve is meant here?

Another hint was "... it could also be the thermosensor steam".
Where do I find the part? What else can you recommend?

Thanks for your help

Harald

Hello Harald

Is the steam still working for you?
it could possibly be the thermoblock. practically not enough steam would be produced or tractive force to suck in the milk.

right many alternatives you don't have anymore, if you go through the spare parts list.

much success

hello, i found the tread, because i bought myself a used CM 5200 too, but the milk foam is not satisfying machine is working as it should, but at the small blue valve someone has fumbled before, think it was picked through. can you order this little rubber riding somewhere separately? find it at Melitta nivona etc only in the ceramic valve complete for about 100 euro, i did not want to spend that much then. thank you very much. lg danny

Hello,

is not blue but black, but otherwise it should work.
[https://komtra.de/melitta-ersatzteile/melitta-ersatzteile/ventilauslauf-keramikventil-nivona-830-831-840-845-850-855.html]

Greß
BS

--------------------
Ich schaue hier nur noch ganz selten vorbei.
In verschiedenen anderen Foren bin ich mit
dem gleichen Nickname zu finden, falls mal
jemand Hilfe benötigt kann ich vielleicht dort
helfen.