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Revising the brewing unit of Nivona Caferomatica

Introduction

The gaskets and seals of this brewing unit are under much strain and have to be replaced from time to time.

The Nivona brewing unit (brewgroup) is identical with those of other brands, such as Bosch, Siemens or Melitta.

What you need

  1. Revising the brewing unit of Nivona Caferomatica, Brewing Unit maintenance: step 1, image 1 of 1

    • Remove the brewing unit from the device.

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  2. Revising the brewing unit of Nivona Caferomatica: step 2, image 1 of 1

    • Take off the cap covering the screwhole in one corner. The cap ensures a better fit of the brewing unit.

    • Note: some versions of the brewing unit do not have this cap.

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  3. Revising the brewing unit of Nivona Caferomatica: step 3, image 1 of 1

    • Remove the single black Torx T10 screw fixing the opening handle.

    • Using a certain amount of force pull the opening handle out of the guidance near the red button.

    • Rotate the handle 90 degrees counterclockwise, then lift it off.

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  5. Revising the brewing unit of Nivona Caferomatica: step 4, image 1 of 2 Revising the brewing unit of Nivona Caferomatica: step 4, image 2 of 2

    • Unclip the upper protection panel, then remove it by lifting it up.

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  6. Revising the brewing unit of Nivona Caferomatica: step 5, image 1 of 1

    • Remove six Torx T15 screws holding together the brewing unit. The screwholes are rather deep.

    • Lift the upper half of the brewing unit up.

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  7. Revising the brewing unit of Nivona Caferomatica: step 6, image 1 of 2 Revising the brewing unit of Nivona Caferomatica: step 6, image 2 of 2

    • 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

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  8. Revising the brewing unit of Nivona Caferomatica: step 7, image 1 of 3 Revising the brewing unit of Nivona Caferomatica: step 7, image 2 of 3 Revising the brewing unit of Nivona Caferomatica: step 7, image 3 of 3

    • 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.

    • Sometimes this downholder ist torn and the coffee leaks out of the brewing unit and does not fill your cup. Inspect the downholder for cracks. You can fix this using a special repair kit.

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  9. Revising the brewing unit of Nivona Caferomatica: step 8, image 1 of 3 Revising the brewing unit of Nivona Caferomatica: step 8, image 2 of 3 Revising the brewing unit of Nivona Caferomatica: step 8, image 3 of 3

    • 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.

    • The lip of the piston gasket must point towards the pressure, i.e. downwards.

    • Clean thoroughly all parts. Use food-proof silicone grease to lubricate the gaskets.

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  10. Revising the brewing unit of Nivona Caferomatica: step 9, image 1 of 1

    • The crema-valve is located in the interior of the upper piston. It is fixed by two Torx T10 screws.

    • 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.

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Conclusion

Apply all steps in reverse order to re-assemble the device.

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