De Longhi EAM 3100 S Machine: Coffee Grinder Failure - Causes and Fixes?

Question

Hello and welcome. This is the first time I am using the courtesy of this Forum. I looked at some threads about DeLonghi Machines and had a very positive impression about the quality of the hints and tips presented here. I would like to ask for advice on a possible failure of the grinder in the...

Harley883 · Accepted Answer

The ground coffee is too finely ground, it could get clogged up behind the burrs, there are some small paddles that push the coffee out of the grinder. If you clean after undressing, be careful not to break them. Try to turn the grinder knob clockwise, as the clock hands go. Then the grinder can grind thicker by itself. The grinder adjusts only when it is turned on and is running. this will help get you started
cover, there is a good access to the grinder no philosophy, just mark how you will unplug the 2 wires from the grinder, where it is connected.

sid31 · Accepted Answer

You unscrew the back, then remove the sides, slide them gently towards the back and fold them upwards. The grinder is under the charging hole. If cleaning does not help, the grinder is here http://divina-sklep.pl/index.php?podkat=134&site_no=9
However, it looks muddy.

Harley883 · Accepted Answer

From the bottom, do not unscrew anything, you have such a mushroom with two screws unscrewed.
to the very end. There are two latches on the white plastic that covers the burr
on both sides, then when you put this large rack to the end, there are two notches and this is where you just pull the burr up.

Harley883 · Accepted Answer

Then unscrew it to the transmission, there is a clutch made of two balls, when you open it, you will know how it works.

sccoty · Accepted Answer

or, on the underside of the screw, the rack that drives the grinder can get out

leotdipl · Accepted Answer

Welcome, In the photo you have the necessary one Repair Kit grinder. (Mahlkegel = Cone and Mahlring = Grinder Sleeve). The repair note states that TE items frequent get damaged as a result of getting into the grinder foreign body - most often stone. It is important that the Cone has 3 ball grooves (as pictured below).

marius_01 · Answer

Harley883, sid31 - thank you for the hints. I will fight according to your indications and let me know.

marius_01 · Answer

After removing the cover, the grinder appeared. It is located as if inside the 'main structure'. How to get to him? From the top, or to unscrew the side 'grid' plastic plate? Or maybe from the forehead?

I am asking for further support

Harley883 · Answer

From the top, first you need to pry up and remove this plastic plug in the grinder adjustment knob because there is also a screw to unscrew and the rest as you see these screws
wring it out. when you remove this coffee container, you will get to the rest of the screws. Remember how the grinder knob is positioned, and then how many teeth are
set gears because it will be important during final folding.

marius_01 · Answer

Understands that you need to remove the entire top cover with the ground coffee chutes, coffee beans and the heating panel. Only then will I be able to pull out the unscrewed hopper for coffee beans and further pull out / unscrew the grinder itself?

Added after 41 [minutes]:

ok Thanks for the hints.
The grinder has been pulled out.
The main point of the program, entitled 'Disassembling and cleaning the grinder' is approaching
The plastic casing of the grinder is screwed to the metal plate, with the motor attached to the bottom. Do you unscrew these screws, or rather the nuts that are somehow in the axis of the burrs themselves?

marius_01 · Answer

okay
I did just that. Now.
Because a moment ago I started unscrewing the bottom part, luckily I just started and screwed it back on.
Can this interior be sucked out with a vacuum cleaner (I have already pulled out the metal hemisphere of the burr)?
Rather do not fumble for anything from the bottom?

Added after 2 [hours] 13 [minutes]:

Cleaning done! Not a single crumb was left in the querns or on the blades of the ring that distributes the coffee to the outlet.
Folded.
Fired up.
Unfortunately, the effect is as before. Instead of the normal sound of a grinder crushing coffee beans, the whistle of a high-speed drill comes from the device. As if something is spinning inside, but it's not churning ...
Well, I guess you'll need a new grinder. Unless you still have any ideas ....

Harley883 - thanks a lot for the hints that allowed me to even get to the cleaning stage of the burrs. It would be hard without them, oh hard.
I am surprised by this drill sound of the grinder, as if some clutch released and did not transfer rotation to the burr with the engine still spinning?

Sid31 - thank you too.

If a new grinder is necessary, I think I will put it on myself

For now, I cordially greet you

pawlikos9977 · Answer

most likely something has fallen into the grinder open the lid of the coffee tank next to the liquid there are two screws unscrew and see if there is a pebble, etc.

arekb81 · Answer

If the grinder makes a slight rattling sound - tighten the grinder burr very tightly with the screw (torx) (left-hand thread). If it does not help - replace the grinder.

widuch sławomir · Answer

I am sticking to the topic, I would ask me to set the burr gears and this knob to set the grinding thickness of the coffee because when I unscrewed it, I did not mark the mutual position and now I am in ---- I am asking for photos of the mutual settings of these gears

k2596 · Answer

I also attach myself to the request of my colleague above. I need a description of how the grind adjustment gears are positioned Thank you in advance

kaaasia88 · Answer

I took the coffee grinder apart to clean it, because among the coffee beans there was plastic that ended up in the grinder

I have the grinder disassembled, but I have a problem with assembling it, first it is under the burrs (to be sure), first springs fall into the holes and then metal balls, i.e. probably bearings, right?

Now I have to put on this plastic casing with internal guides and how to remove it by unscrewing it clockwise, but now how to "screw it"? because this plastic only enters in one position and this is where the problem arose, I tried to press and twist, but it does not go

I also have a problem with setting the grinding grain size, when turning this knob, these springs stretch, tiny balls do not block them, which can be done with it.
I would like to add that the website for submission wants PLN 180

Please help

Igo40 · Answer

Hello!
My express was having exactly the same complaints. It turned out that there was a stone in the coffee! after unscrewing, I found out what is the reason for this whistle!
The belt in one place became smooth and hence the whistle!
So I bet on the belt!
For clarity, my belt is 912 MXL

marius_01 · Answer

Hello, Thanks again for the hints. I repaired the coffee machine for a relatively long time because I was not on the spot and the equipment could be used with ground coffee. Unfortunately, the grinder was irreparable, because the failure was not caused by the metal burrs, but by the plastic gears, which I got to after unscrewing the bottom of the grinder. The rack (plastic) transmitting the drive was worn. It was necessary to replace the grinder. It was sent to me from DeLonghi. WARNING! WARNING! It is very important to give them the type of grinder (I sent a photo of the nameplate and barcode) as the grinders have changed during quite a long production of this model. I attach photos (unfortunately I don't know how to put them in the right order - please use the file name as a guide) of the grinder replacement and illustrations of a broken gear. Maybe someone will need it someday? kisses

marius_01 · Answer

Hello, Yes, yes sccoty ... Teflon teeth of the rack are worn (it's on the photos). Not replaceable = new grinder. I did it myself, 2-3 times cheaper than in the service.