-
-
-
The inside of the brewing unit ist exposed. You can see:
-
The upper piston and its gasket.
-
The funnel for the coffee grounds
-
The lower piston.
-
The hold-down clamp
Hi, Thank you for your howto. It is very detailed and helpful.
There is another seal in the lower piston. it seems to be a lip seal.
I searched and couldn't find a remplacement for that. do you know where I can buy it?
Many thanks
-
-
-
Remove the funnel.
-
Rotate the lower piston counterclockwise and lift it off.
-
Lift off the upper piston. There ist still a hose connecting the piston to the coffee outlet. In top there ist also the downholder of the brewing unit.
Anyone seen the repairkit somewhere?
we have taken the piston out to replace the gasket, and noticed that 2 of the 3 return springs within the housing surrounding the piston are broken and offset. can we buy these springs as spare parts anywhere? many thanks
Was ist dieser Niederhalter? Wo kann dieses Teil reißen, kannst du mir kurz einen Hinweis geben. Bin mir unsicher auf welches Teil zu verweist. Evtl. könnte man es im Bild farblich markieren. Danke!
Habs jetzt in Bild 5 grün markiert. Es ist wie eine Brücke über dem oberen Kolben. Er trägt auf der Unterseite eine kleine Gummidichtung (kann auch kaputt gehen), die verhindert, dass der Kaffee oben über dem Kolben rausfließt (sondern zum Kaffeeauslauf nach vorne), wenn der Kolben ganz oben ist. Der Riss kommt recht häufig vor; er ist ziemlich unauffällig, du erkennst ihn, wenn du versuchst den Niederhalter zu verbiegen. Eine mögliche Quelle habe ich ja oben am 3.Okt.2020 angegeben.
VauWeh -
-
-
-
Remove the hose connecting the upper piston and the coffee outlet.
-
Remove the upper piston.
-
Remove the Torx T20 screw from the screen of the upper piston.
-
Take off the cover of the gasket and the gasket.
-
Replace the gaskets of the upper piston, the coffee outlet and water connector.
-
Clean thoroughly all parts. Use food-proof silicone grease to lubricate the gaskets.
I have no coffee/water coming tru the outlet of the upper piston, i can see water runs into the piston chamber but nothing goes tru. I have changed the drain valve without luck - Any clue of what my problem could be?
Check for a tiny crack in the downholder .
VauWeh -
Well, are you sure that the issue is really with the brewing unit? I would ask someone if they could borrow a brewing unit for testing. As many machines are produced by the same factory and are equally designed (Eugster in Portugal) brewing units from Nivona, Bosch and Melitta will also fit.
VauWeh -
-
-
-
Remove both screws. Lift off the valve. Inspect it and clean it.
-
Note: there is another gasket on the shaft of the lower piston. Replacing it is difficult.
-
Lubricate all sliding parts with food-proof silicone grease. Verify the smooth operating of the brewing unit.
Nice article, I’ve renewed the lip seal in the brewing unit but I still don’t get even a drop of coffee in the cup, it all goes in the drip tray.
I have dismantled the brewing unit complete and suspect the lower piston seal to be the problem as it doesn’t provide any “resistance” or tight fit.
You say; “replacing is difficult”, but no instructions. Could you please provide a link?
Many thanks in advance.
And: Did you have a look to the drainage valve?
VauWeh -
Hello. I managed to replace the o-ring for the piston, I mean taking out and installing the new one, using a tool from this kit: YT-08429 .
-
Follow the steps in reverse order to reassemble your device.
Follow the steps in reverse order to reassemble your device.
Cancel: I did not complete this guide.
12 other people completed this guide.
Special thanks to these translators:
100%
These translators are helping us fix the world! Want to contribute?
Start translating ›
Team
Repair is War on Entropy Member of Repair is War on Entropy
Community
29 Members
1,752 Guides authored
4 Comments
The brewing unit in my Melitta Avanza Series 600 (which is apparently identical) was completely stuck inside the machine, and the only way I could get it out was to follow this guide. Unscrewing the accessible side of the brewing unit gave me the necessary access to finally get the brewing unit unstuck and out of the machine. The cap mentioned in step 2 was a bit hard to get out with the brewing unit still inside the machine, but by first unscrewing all the other screws to loosen the side a bit and then using some force, I finally got it off without breaking it.
Note that I also had to reset the main gear position to get the brewing unit back into the machine, which on my machine was performed by pressing the single + double espresso front panel buttons for 2 seconds.
The reason why it was stuck? 100% my fault. I turned the machine off in the middle of a cleaning cycle when I realised I forgot to insert a cleaning tablet, and then tried to get the brewing unit out and ... yeah ... don't be an idiot like I was, do NOT attempt to take the brewing unit out while it's in "engaged" mode, unless you too wish to follow this guide for that reason. 😉
There is also a more bloodless way: open the left side, find the cables to the motor. Connect 12 V DC, et voila....
VauWeh -
Hello. Congratulations for the info. Can you tell me what is the service interval or when is necesarry to replace the gaskets inside the brewing unit, is there a simptom that appears in time ? I have a Melitta Caffeo Solo&Milk that I bought(new) two years ago. Thank you .
Depends on the number of prepared coffees. After two years it might be necessary, especially when the used coffee grounds is too moist. The procedure is simple and the parts are cheap, so it's better to have one more than too few.
VauWeh -
