Nivona 845 Milk foam poor

Nivona CafeRomatica 845
Hallo
I have problems with my machine.
When I do a complete cleaning
the first time I get a milk foam that still works.
On the second occasion only steam escapes with only a little milk.
As if the system is drawing air.
I have already replaced the suction nozzle.
Alas, it hasn't helped.
What else can I do?
This is how it looks for me
YouTube

Hello,
Wanted to ask if you solved your problem with the milk foam?
My machine has similar problems. I can only make one cup of coffee with milk foam at a time. The second one comes only with hot air and minimal milk.

Hello would like to try this. Clean the milk channel with the utmost care and start the decalcification program with decalcifier on amidosulfonic acid.
Then it should work again.
MfG Chris

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Hello,
would like to ask if you have any Erfo´lg I have the same problem and still search !javascript:emoticon(':ph34r:')
Lg,Micha

Hello
My device has come out of repair now.
The spout has been dipped.
Now it's working again.

Usually the frother is dirty with milk residues, if it is not meticulously clean to the corners then only Plörri comes out instead of milk foam.

I had also thought and exchanged that.
But it wasn't.
For me it was, lau Nivona, the outlet.

I mean the parts of the milk system that are at the coffee spout.