Introduction
The brew group of these appliances can be easily removed for cleaning. The most important seals need to be replaced from time to time. This is shown here.
Note: The brew group of the EQ9 is completely different, the instructions do not apply to it.
''These instructions can also be used with other Siemens/Bosch models - the models have a similar structure.
Parts
-
-
The second seal, which should be replaced more often, is located on the upper piston. In theory, it could also be replaced without further disassembly. Since opening the brewing unit is not difficult, it can be cleaned more thoroughly.
-
-
-
Remove the cover from the upper piston. Reach under the notches on the left and right, a plastic tool is helpful here, but you can also use your fingers. Remove the cover.
-
Now the upper piston is easily accessible from two sides and can be cleaned quite well.
-
-
-
Lift the upper side plate. The rubber bumper at the top of the piston will probably fall off. It must be pushed back into the top of the pin on the side plate during reassembly, with the smaller bumper facing down.
-
-
-
Pull out the piston completely.
-
Unscrew the Torx T10 screw on the brewing filter.
-
Take off the brewing filter.
-
-
-
Using a blunt tool, lift out the lid above the crema valve. Lift off the lid.
-
Pull out the crema valve.
-
-
-
Lift out the cylinder with the lower piston.
-
Now the brewing unit is largely disassembled. The lower piston can also be removed, but it is usually sufficient to thoroughly clean the parts that have now been removed. Replace the O-ring on the upper piston and on the water inlet (possibly on both ends), grease them and the cylinder thinly with food-grade silicone grease.
-
Reassemble everything.
-
To reassemble your device.Work through the steps in reverse order
5 comments
Eine gute verständliche Anleitung mit hilfreichen Bilder. In meinem Fall hat es leider nicht geholfen, da der innenliegende Kolben, um den Kaffepuck hochzudrücken schwergängig ist. Vielleicht brauche ich eine neue Brüheinheit. Die Kaffeereste werden somit nicht ausgeworfen.
@thomaske Soweit ich mich erinnere wird der untere Kolben ähnlich wie bei Saeco ausgebaut. Siehe diese Anleitung. Er ist am Kolbenschaft abgedichtet und es ist mühsam, die Dichtung zu wechseln, aber doch einen Versuch wert. Als erstes würde ich den Kolbenschaft gut fetten.
VauWeh -
Hi! In the chamber that holds to coffee grounds there is a piston that seals when pushed down and that can eject the coffee Puck when finished. Under the piston there is a seal that wears out over time. I'm having a hard time finding a replacement seal and I'm not particularly interested in buying a whole new unit only because a o-ring is getting old. Do you know what kind it is?
@joakimjespersen If you just want the ring, you will find it here.
VauWeh -
Martin -