CR 757 - brewing group can no longer be used
Posted by: papavomsee January 03, 2016 12:54 pm
Hello,
I have unfortunately taken problems with my Nivona CafeRomatica 757.
Gestern evening broth group to clean. Machine was off.
She went out heavy somehow. So I had to shake a bit after turning the lever.
Today it can't be used properly anymore. It's kind of hard, and she doesn't lock up right. The lever cannot be moved non-violently.
The lower part of the brewing group can be moved manually without any problems.
In my opinion, the position in the machine also seems to be correct, I do not see the problem.
Abide pictures about the position of the brewing group.
https://goo.gl/photos/5ufxe1SuhVwrmqwK9
The only thing I noticed was the upper metal lever on the brewing group, which is supposed to actuate the left upper shifting in the machine, at the bottom.
To operate the switch it would have to be up, no idea how it normally works when used :/
But the lever cannot be moved (what exactly does this upper part of the brewing group do?)
I have already pressed the two switches manually and let the machine switch on (so that it moves to the home position, if that would be the problem).
For the machine everything is okay, but the problem doesn't change.
That can't be that the brewing group just won't go in anymore....
Request help, need Coffee 
Greeting Oliver
Posted by: snx July 10, 2018 05:09 pm
Hello Oliver,
have come across your thread because I have the same problem. Could you solve the problem back then?
MfG
Sebastian
Posted by: Guest July 13, 2018 09:36 am
Just in case someone still has this problem:
The next day the brewing unit suddenly went to push in a little further (for whatever reason). With quite a lot of pressure it was even possible to turn the locking lever and the machine runs again...
Posted by: J.D May 12, 2019 02:06 pm
Das Problem hatte ich auch und habe nun nach langem suchen eine ganz einfache Lösung gefunden.
Durch das intensive Reinigen der Maschine ist lediglich das Gummi im Führungszapfen ausgetrocknet.
Macht man hier einfach etwas Siliconfett drauf, funktioniert das einsetzen der der Brüheinheit wieder einwandfrei.
Posted by: Gast_Andrea July 02, 2019 06:14 pm
Thank you very much for the tip with silicone grease! for
one hour I almost took
my life at the brewing group now I
smeared it and everything was fine. A
thousand thanks
Posted by: Gast_Claudia November 09, 2019 05:06 pm
I haven't had coffee in hours. The grease thing saved our weekend.
Thank you very much.
Posted by: Gast_Bibi December 18, 2019 12:42 am
| QUOTE (J.D. @ Sunday, May 12, 2019, 14:06 pm) |
| I also had the problem and have now found a very simple solution after a long search. Due to the intensive cleaning of the machine, only the rubber in the guide pin has dried out. If you just put some silicone grease on it, the brewing unit will work fine again. |
I also had the problem, but I could solve it by greasing the brewing unit. This is at the point where the hole with the 3 grooves is (unfortunately cannot explain it any other way), where the opposite side is then at the machine. Since I grease it regularly, it goes very well in the machine.
Posted by: Martin (Hobbytechniker) December 19, 2019 02:11 pm
..You may oil the cone otherwise also gladly with salad oil times a little bit if nothing else to the hand... 
Posted by: Gast_Eva January 04, 2020 04:13 pm
Wow! After an hour of desperation and 1000 trying to get her brew group back in, I followed this tip here and poof!!! Thanks
Posted by: Gast_Georg July 02, 2020 09:53 pm
that's exactly how I did it->
used cooking oil - and .... immediately ready for use again
Posted by: maschei October 01, 2020 10:42 pm
Also thank you very much for this simple and ingenious tip, a little bit of fat on it and you'll be fine again
Posted by: Gabriela October 09, 2020 04:28 pm
Thanks for the great tip.
I was beginning to think this weekend was over.
Posted by: Gast_Thomas January 03, 2021 08:19 pm
Salad oil on it, then gings. Thank you for this tip.
Posted by: Gast_Christian January 06, 2021 07:49 pm
| QUOTE (Guest_Andrea @ Tuesday, 02 July 2019, 18:14 Clock) |
| Thanks for the tip with silicone grease! Almost took my life at the brew group since an hour agoNow lubricated and everything is fine. Thanks a million |
Thanks for the tip. Have rubbed the two rubber rings with a little sunflower oil, and poof the brewing unit slid in without any problems. A little jiggle the lever and then the again engaged.
Posted by: Guest January 08, 2021 06:42 pm
Hi friends a great tip!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Posted by: Gast_Gabi March 21, 2021 12:09 am
| QUOTE (Martin (Hobby Technician) @ Thursday, 19 December 2019, 14:11) |
| ..One may otherwise also like to oil the cone with salad oil times a little if nix other to hand... |
Super...thanks for the tip...weekend is saved!!!
Posted by: Gast_Marion May 16, 2021 10:27 pm
| QUOTE (J.D @ Sunday, 12 May 2019, 14:06) |
| I also had the problem and have now found a very simple solution after a long search. Due to the intensive cleaning of the machine, only the rubber in the guide pin has dried out. If you simply put some silicone grease on it, the insertion of the brewing unit works perfectly again. |
Thank you for the tip! We still had tap grease for fittings in the toolbox, so that the brewing unit could be reinserted and now the machine runs like lubricated.
Posted by: Naehla May 31, 2021 01:05 pm
Suuuper tip.
Has also worked for me.
This has already cost me desperate hours.
LG
Posted by: Gast_Jürgen September 13, 2021 03:16 pm
Hello,
have today already doubted my craftsmanship and my brain-hand coordination when inserting the brew group after cleaning.
That with the grease is really a very good tip. After that, the brew group is pure as butter.
Posted by: Maren November 28, 2021 01:42 pm
Thank you so much, Sunday is saved!
Posted by: Gast_Ute February 05, 2022 04:57 pm
Thanks for the tip :-)) after countless attempts and almost tore off the lever it has now worked. Simply ingenious.
Posted by: Gast_Rainman February 05, 2022 05:50 pm
I would never have guessed in my life that it could be so simple. Also thanks for the tip to work with salad oil????
Posted by: Gast_Werner February 24, 2022 10:20 pm
| QUOTE (Guest_Bibi @ Wednesday, December 18, 2019, 00:42 PM) | ||
I also had the problem, but was able to solve it by greasing the brewing unit. Namely at the point where the hole with the 3 grooves is (can not explain it otherwise), where the opposite side is then on the machine. Since I grease it regularly, it goes very well in the machine. |
Thanks for the advice!! Greased after hours of despair and it worked !!!
Posted by: Gast_Elke June 19, 2022 08:06 pm
Thank you for the tip. You have saved my a***.
It has now worked flawlessly with the insert and lock.
LGElke
Posted by: Gast_Gast July 11, 2022 01:10 pm
The tip with the fat has saved me from despair
Daaaanke
Posted by: Gast_Tanja February 07, 2023 11:27 am
| QUOTE (Guest_Jürgen @ Monday, 13 September 2021, 15:16) |
| Hello, already doubted my craftsmanship and brain-hand coordination today when inserting the brew group after cleaning. That with the greasing is really a very good tip. After that, the brew group is pure as butter. |
It was the same for me, I now know pretty much which mechanics are in there, but despite 2 hours of frustrated fumbling I got nowhere. The silicone oil tip has then brought it!!! Thank you!!!
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