[Solved] Siemens EQ7 TK76209RW05 coffee machine - the grinder is smoking coffee

Hello everyone.
I need help calibrating my EQ7 grinder. Unfortunately, during the maintenance of the device, I was cleaning the grinder and probably out of adjustment. Now, even when you turn the grinding knob, the coffee is sour (burnt to my taste). On the grinder, there are probably two teeth marked with color, but I don't know what to set it with. Does anyone know where to find the setting (calibration) of the grinder?
Or maybe someone dismantling the grinder would include a photo of his grinder setting. Thank you in advance for your help and best regards.
Peter

Hi
Set a marker between the colored teeth. The setting is shown on the last page of the appendix.
Regards Mirek

Hello !
Thank you for your answer regarding the grinder.
Unfortunately, only today I found a moment to disassemble the coffee machine.
Unfortunately, my grinder has different markings than the one shown in the photo in the document.



I set the white indicator marked on the gear with the indicator on the housing, but I don't know if this is the correct setting.
Do you have any other idea or maybe this setting is correct?
Thanks in advance for your suggestion.
greetings
Peter

In mills, the calibration consists in setting the so-called zero point.
The burr is twisted until both parts touch. Then, while turning the burrs, return the ring until the burrs no longer rub against each other.
This is the zero point at which the burrs almost touch, and at this setting the grind is finest.

This is how gastronomic class grinders are calibrated, you can also try them in an automatic coffee machine.

Hello !
I took the grinder apart and cleaned it, it looks like new now. After twisting the grinder, max. there seems to be a fairly large gap between the burrs, as if it was impossible to make more turns. With the setting as I wrote above, the taste of the coffee improved compared to the previous setting, but this is not yet the same as in my friend's Krups coffee machine (the same coffee beans).
In addition, my discs that fall out are a wet mush, there is a noticeable grain between the fingers (you can compare it to the facial scrub used by my wife). In a friend's coffee machine, the discs are completely dry pills.
Maybe it's not a grinder, but a brewing unit?
Reading the forums and looking at the pictures of the brewers, I noticed that my brewer is a bit different, as if not complete with the other brewer available for this model (mine does not have a rubber gasket that is put on the brewer, a plastic lid at the channel into which coffee falls, instead of a wire for pulling The coffee pills have a plastic element and the structure is different ...).
Thanks for all comments and suggestions, maybe someone has a similar problem.
greetings
Peter

Hello
Right now I have the EQ7 machine disassembled, so I can take some photos if you need to compare. It will probably lie for a few days because I do not have time to fold it.
I have another problem - it shows a message to refill water (or something like that) even though the container is full.
I checked the water sensor - it's OK, the solenoid valve between the container and the pump - also, the pump gives water (only it goes to the base).
I noticed that rinsing is OK, but hot water, steam and heating the milk - "sneezes" (water is poured into the saucer, no steam is produced and the milk is not pulled).
I checked the brewing unit - no cracks and re-lubricated the O-rings.
I am in the "dismemberment" stage of the ceramic valve.
By the way, I have a question where the switch gasket should be mounted, which fell out when disassembling the coffee machine (photo of the switch below)

Hello !
Unfortunately, I am not as advanced as YOU . I only pulled off the side panels and the top, which allowed me to reach the grinder. I was just taking apart the grinder and the brewing system. I haven't undressed anything else, so I won't help you. I see such an element first. I have had this coffee maker for 8 years and I must say that I have never had any problems with it, especially as you describe. If you were so good, please remove the grinder from the top with the markings on it.
By the way, I have a question, do you also have "coffee muck" in the waste for coffee lozenges instead of pastilles with grounds?
Thanks in advance for your answer. greetings

Hello
pasted a picture of the grinder (setting the gears).
Note the markers on the grinder wheel and knobs (the markers on the small sprocket and grinder wheel are expected to align).
In my case, the red marker of the wheel will reach the marker on the housing (the arrow is drawn) and I cannot turn the grinder wheel any more - it is twisted to the max.
For use, I turned the wheel markers (green and red) to be at the height of the knob (small rack) and the grinder had coffee satisfactorily (although these settings differ a bit from the instructions), the most important thing is that the "quality control" - the wife is satisfied (she was satisfied , but you can set the coffee tighter (the red mark closer to the arrow), then the grinder will grind the coffee finer.
As for the coffee grounds, my wife says they were always dry.


I attach other service drawings of parts:

I have service videos, but I think I can't put them because I don't know if it is in accordance with the regulations, but I can send you an e-mail

Hello !
In your case, the sprocket is beautifully marked. I have no red and green indicator. The indicators on the housing are. On the gear wheel, the only indicator is one of the teeth painted gray graphite (like a pencil). If I put this tooth and the indicator on the casing, I think they were too thick. I'll have to do trial and error checking a few settings.
When it comes to coffee waste, I don't have lozenges, but "coffee mud". There is a lot of water in the coffee grounds container, although I have replaced and lubricated all the seals. In addition, I noticed that after making coffee, the coffee grounds do not fall into the container, but stick to the plastic tray and during the next brewing they are pressed between the tray and the casing of the machine (the front inner wall of the machine), where it all drips down. In general, everything is splashed with coffee inside, after a few days it starts to moldy, practically every third day I have to wash the entire interior of the coffee machine. This is starting to irritate me and I am thinking about buying a new coffee machine and it will probably not be Siemens, I got a bit offended. If I remember correctly, I didn't have any dry lozenges (coffee grounds) from the beginning, it was rather a wet paste. I think I have a first generation brewer, later changes were made and maybe here is the problem. It is a pity that Siemens did not replace the users of this brewer, a similar situation is with the milk frother, which has been improved, I have the first clamped version (the new one is twisted).
Thank you for your help and comments.
Best wishes
Peter

Hello
My (wife's) coffee machine is probably 6 years old and until recently everything was OK.
You also had to wash the grounds container at least every 3 days, because they would soon come out of it by themselves, but they were relatively dry (not mud like yours, Piotr).
I used to have the Krups 8030 model before, but compared to the EQ7 it was a toddler with a polonaise and it was pouring like a "duck's rump".
I looked at the ceramic valve - it's clean, I have to put the EQ7 together and we'll see if I made it.

Thank you for the advice, after cleaning the grinder a significant improvement in the quality of the coffee. I am attaching some photos of the grinder.

ps. Interestingly, there are several versions of this machine intended for different markets. greetings

Welcome back!
Returning to the subject of the Siemens EQ7 machine and the poor quality coffee associated with the grinder, I wanted to share my later experiences.
After cleaning the grinder and adjusting it, of course with your help, I was able to start the coffee machine. As I wrote, despite all the treatments, the coffee, unfortunately, does not impress, the discs are still wet (despite the replacement of all seals). I decided to invest in a new brewer (the latest model) after all the upgrades, if you can call it that. After replacing the brewing unit, the coffee discs finally come out dry, the coffee seems to be a bit better too ... a bit.
Unfortunately, I noticed one thing that bothers me, namely ... when brewing e.g. a milk drink - cappuccino, the essence of coffee flows from the spouts, say about 30-40% of the time, the rest is practically just water. By stopping brewing after about 30-40% of the time, you get a completely different coffee quality, read: much better. Probably the problem with the poor quality of my coffees is that they are simply too diluted, it is like drinking water with milk, not cappuccino.
Have any of you encountered this problem, which may be the reason for such a situation that the real essence, or if you prefer espresso, flies a moment and then practically only water and what can you do about it?
At the same time, I mention that I have used many coffee beans, ranging from Lidl, Melitta, Movenpick and Lavazza. I don't think it depends on the quality of the coffee.
Thanks for all the suggestions. greetings

kutpio wrote:

I don't think it depends on the quality of the coffee

The brands you mentioned are a mass market product. The quality of these coffees varies, from non-drinkable to reasonably decent, very good ones are unlikely to be found there. Most often, however, the problem lies not in the quality of these beans, but in their freshness, i.e. the time that has elapsed since firing. The expiry date has nothing to do with it.

Roasteries offering high-quality beans usually have a shelf life of no more than 3 months. After some time, the beans lose their taste more and more. Of course, this is a fluid process and it doesn't happen by leaps and bounds overnight. Try a store-bought coffee that lists the roasting dates of the coffees, not the expiry dates, because those are of little importance to taste. It is best to take the freshest, fired under an espresso machine.

Another reason may be the settings of the machine - temperature and brewing time and, indirectly, the amount of water, the degree of grinding of the beans. Espresso is about 30 ml obtained from 7-8 g of coffee. If you pass 100-200 ml of coffee for the same amount of coffee, you will get a diluted drink, the so-called amerikano.

If you brew coffees much larger than an espresso, this may be watered down.
If you stick to the 25/25 rule (25 ml in about 25 seconds) and use fresh grains, the drink should be thick, oily, and essential.