Repairing bean to cup Krups EA8800 coffee machine

Reading time : 6 minutes
Published on 22 Oct 2020 - Updated on 06 Nov 2020
Repairing bean to cup Krups EA8800 coffee machine

Today is a sad day, my coffee machine is not working anymore ! No more engineer fuel 😢 After multiples checks, it looks like coffee grinder is worn out. Coffee powder is accumulating and it blocks the grinder. My coffee machine is making a troubling noise but it does not make anymore coffee.

First good news is thats Krups brand is distributing spare parts. You can find them easily on internet. I finally ordered a new coffee grinder on Midi Pièces Ménager website for 75€ including shipping costs. Cost is quite high but it represents less than 10% of the cost of the machine.

Here I will detail how I teared down the coffee machine and how I fixed coffee grinder issue. It can be usefull if you have the same type of machine.

Tear down and reassembly

Step 1 : Top cover dissassembly

Step 1a : Remove liquid tray, top grid, and coffee bean cover
Step 1a : Remove liquid tray, top grid, and coffee bean cover
Step 1b : Remove top screws
Step 1b : Remove top screws
Step 1c : Remove coffee bean tray screws then the plastic part and the two screws behind the machine
Step 1c : Remove coffee bean tray screws then the plastic part and the two screws behind the machine
Step 1d : Remove top cover
Step 1d : Remove top cover

Begin by removing used liquid tray, water tank, the top metal grid and coffee bean tank cover.
Remove all coffee beans you can with your hand. Under the metal grid, remove the two rubber parts. Remove screws behind rubber parts. Remove screws that are hiding protecting coffee grinder input, then remove transparent bean tank.
Under the bean tank there are two new screws to remove. Top cover can now be removed without forcing.

Step 2 : Display and coffee dispenser disassembly

Step 2a : Remove display front screws and the one over the controller pcb
Step 2a : Remove display front screws and the one over the controller pcb
Step 2b : Push with a flat screwdriver on the orange rectangle location. Push the debug connector on the top
Step 2b : Push with a flat screwdriver on the orange rectangle location. Push the debug connector on the top
Step 2c : Remove the display part
Step 2c : Remove the display part
Step 2d : Remove coffee dispenser by pushing with two toothpicks on indicated locations, then push part to the top
Step 2d : Remove coffee dispenser by pushing with two toothpicks on indicated locations, then push part to the top

Remove the six screws that are keeping in place the display front face. Remove the screw above controller board.
⚠️ Warning, some screws heads are in depth , you will need a magnetic screwdriver and a good torch light ! ⚠️

Remove controller board protective cover Remove carefully front face, then disconnect the cable.

Slide the coffee dispenser silver part to the top until it blocks. Put two toothpicks in indicated holes, push gently while sliding grey part to the top.

Step 3 : Back cover disassembly

Step 3a : Unscrew the hidden screw behind coffee dispenser
Step 3a : Unscrew the hidden screw behind coffee dispenser
Step 3b : Remove six front screws
Step 3b : Remove six front screws
Step 3c : Remove four hidden screws behind front face
Step 3c : Remove four hidden screws behind front face
Step 3d : Remove the six screws around used coffee tray
Step 3d : Remove the six screws around used coffee tray
Etape 3e : Pull off black part with Krups behind the machine
Etape 3e : Pull off black part with Krups behind the machine
Etape 3f : Vue avec le capot arrière enlevé
Etape 3f : Vue avec le capot arrière enlevé

Remove the screw that was behind the coffee dispenser
Remove the six screws from the front face
Disassemble the plastic cover at the bottom front face Remove the four screws that were hidden by plastic cover
On the left side, remove the used coffee bin, the cofee drawer then remove the six screws. On the back of the machine, remove the Krups cover by pulling it gently You can now slide the full machine cover to the back !
It is now time to celebrate your victory against the machine.

Step 4 : Coffee grinder disassembly

Step 4a : Remove coffee grinder screws
Step 4a : Remove coffee grinder screws
Step 4b : Disconnect coffee grinder cable
Step 4b : Disconnect coffee grinder cable

Remove coffee grinder screws
Disconnect coffee grinder cable
Remove the coffee grinder

Step 5 : Adjusting the new coffee grinder

Step 5a : Copy the mark from the old coffee grinder to the plastic crown
Step 5a : Copy the mark from the old coffee grinder to the plastic crown
Step 5b : Remove the crown by pushing gently the clips
Step 5b : Remove the crown by pushing gently the clips

When replacing the coffee grinder, we need to adjust the new one to get the correct quantity of coffee.
Here is what I did :

  • Copy the mark from old coffee grinder on the crown
  • Disassemble the crown by opening clips using fingers or small flat screwdriver
  • Align the new grinder white mark with the one on the crown, then put the crown back on the new coffee grinder.

If you did not copy the coffee grinder mark, you need to align the new grinder white mark with the index ball. Index ball is located in the higher corner of the grinder. Then place grinding adjustment part on the coarse setting by turning it clockwise to the stop. Put back the crown while keeping grinding adjustment part in place. Complete process is detailed in french in page 11 of the service manual .

Step 6 : Verifying grinder adjustment

Before reassembly, I advice you to clean your coffee machine completely.
Then put everything back together except the top cover. Put only the coffee bean tank.
It allows to check and adjust easily coffee grinder adjustment.

To check that the coffee grinder is correctly adjusted, you need to read the future in coffee grounds.
Make three coffees ☕ ☕ ☕ in strong expresso mode ( 3 coffee beans setting ) with the grinder in coarse setting.
The last coffee ground disk height in the ground tray shall be between 12 and 14 milimetters
This processs is detailed in page 11 of the service manual .

To go further and clean up

Now that everything is appart, it is time to clean everything up !

Step 7 : Removing the control board

Step 7a : Disconnect controller board connectors
Step 7a : Disconnect controller board connectors
Step 7b : Raise up controller board stand close to the screw, then remove controller board
Step 7b : Raise up controller board stand close to the screw, then remove controller board

Remove connector from electronic PCB
📷 Do not forget to take a photo to remember cables and connectors positions 📷
Lift the black plastic holder up close to the screw

Step 8 : Disassembly of the brewing chamber

Step 8a : Remove coffee tube
Step 8a : Remove coffee tube
Step 8b : Remove the screw to free higher part of the piston
Step 8b : Remove the screw to free higher part of the piston

Remove the coffee out pipe.
Disassemble high part of the piston with a T10 Torx screwdriver
With a pencil and a vacuum, clean what you can.

Conclusion

My coffee machine is working perfectly again, what a great day ! 😀
I think that this coffee machine was well designed. Everything can be disassembled easily, there is only one screw type (except for the brewing piston and for the coffee ground tray) There is nearly no clips assemblies and I found spare parts easily on internet.
This machine was think to last many years ! 👏
My only little regret is that screws are directly screwed inside plastic. It is more durable with metal inserts. I do not think it will support dozen of disassemblies.
Now, I really deserve one ☕

Useful documents

Krups bean to cup repair and service manual
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