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Start the motor for the drain valve in Jura Z models

Введение

If the drain valve is not opened properly, the most likely error pattern is as follows: after rinsing, the pressure is not taken from the brew group, the brew group motor continues to try to work, sounds very agonized. This process repeats itself a few times. The drainage motor from model Z6 can be removed quite easily. Often it can be restarted and it is not necessary to replace it.

Note: some pictures are from a different model and may differ slightly.

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  1. Start the motor for the drain valve in Jura Z models, Opening the Jura Z series housing: шаг 1, изображение 1 из 1

    • Unplug the machine from the power outlet

    • Remove all attachments: water tank, drip tray, aroma lid

    Перевод

  2. Start the motor for the drain valve in Jura Z models: шаг 2, изображение 1 из 3 Start the motor for the drain valve in Jura Z models: шаг 2, изображение 2 из 3 Start the motor for the drain valve in Jura Z models: шаг 2, изображение 3 из 3

    • Turn the machine so the back is facing toward the front.

    • The Jura sign must be removed. Turn it a few millimeters counterclickwise.

    • If this becomes difficult use a suction cup to assist.

    • Remove the Jura sign.

    Перевод

  3. Start the motor for the drain valve in Jura Z models: шаг 3, изображение 1 из 2 Start the motor for the drain valve in Jura Z models: шаг 3, изображение 2 из 2

    • Behind the Jura sign are two screws with an oval head. They have to be removed.

    • These screws have an oval head that makes them look like rivets (picture 2). You need to use a special bit for their removal. If the right bit is not available, it could be done with a pair of needle nose pliers. Jura wants to keep us out of our own machines!!!!

    Перевод

  4. Start the motor for the drain valve in Jura Z models: шаг 4, изображение 1 из 2 Start the motor for the drain valve in Jura Z models: шаг 4, изображение 2 из 2

    • Push the back down a bit and then remove it.

    Перевод

  6. Start the motor for the drain valve in Jura Z models: шаг 5, изображение 1 из 1

    • Pull the right side panel- as seen looking to the frontpanel - backwards and take it off.

    • Sometimes it gets a bit stuck and may require a bit more of a pull.

    Перевод

  7. Start the motor for the drain valve in Jura Z models: шаг 6, изображение 1 из 3 Start the motor for the drain valve in Jura Z models: шаг 6, изображение 2 из 3 Start the motor for the drain valve in Jura Z models: шаг 6, изображение 3 из 3

    • In this step, you should remove the screws of the left side panel. The side panel can only be removed after removing the top cover.

    • Remove the Torx T15 screw on the front wall of the side panel.

    • In the side part there is a lid over the brew group. The lid is fastened at the top with two oval head screws. Remove those to remove the lid.

    • With the cover removed the brew group becomes visible

    Перевод

  8. Start the motor for the drain valve in Jura Z models: шаг 7, изображение 1 из 3 Start the motor for the drain valve in Jura Z models: шаг 7, изображение 2 из 3 Start the motor for the drain valve in Jura Z models: шаг 7, изображение 3 из 3

    • This step shows how to remove the top cover

    • Remove the powder tray and all coffee beans.

    • The cover is fastened with three Torx T15 screws. Those are easily visible under the covers as well as the small cover on the left back side.

    • Remove the two Phillips screws on the bean container and remove the bean container.

    • Lift the cover upwards.

    • If it is stuck, use a plastic opening tool to carefully pry it open.

    • The lid of the bean container is held in place by a small, strong magnet that loosely rests. It is either in the green marked recess, or it remains hanging on the bean container. Make sure it is not lost!

    Перевод

  9. Start the motor for the drain valve in Jura Z models: шаг 8, изображение 1 из 2 Start the motor for the drain valve in Jura Z models: шаг 8, изображение 2 из 2

    • Pull the left side panel backwards to take it off.

    • For some repairs it is not necessary to remove the left side panel.

    Перевод

  10. Start the motor for the drain valve in Jura Z models, Motor for the drain valve: шаг 9, изображение 1 из 2 Start the motor for the drain valve in Jura Z models, Motor for the drain valve: шаг 9, изображение 2 из 2

    • The drainage motor on the Z6 and following models is fixed with two Torx T15 screws. Unscrew them and pull out the motor.

    • Leave the cables connected to the motor for the time being. Trigger a flushing process and observe whether the pin moves back and forth. If not, the gearbox is blocked. You may be able to get it going with the following steps.

    Перевод

  11. Start the motor for the drain valve in Jura Z models: шаг 10, изображение 1 из 3 Start the motor for the drain valve in Jura Z models: шаг 10, изображение 2 из 3 Start the motor for the drain valve in Jura Z models: шаг 10, изображение 3 из 3

    • The gearbox (the black plastic part) is attached to the metal engine block with four metal tabs. Straighten the tabs with a small screwdriver.

    • Pull the gearbox off the engine block.

    Перевод

  12. Start the motor for the drain valve in Jura Z models: шаг 11, изображение 1 из 1

    • Turn the armature of the motor while holding the pin. Check whether the pin moves back and forth.

    • This probably solves the blockage. Grease the worm (and the pin) again a little. Position the worm so that it protrudes about 3 mm.

    • Reassemble the motor and bend the retaining tabs on the metal housing until it is tight.

    Перевод
Заключение

To reassemble your device, follow these instructions in reverse order.

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VauWeh

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The issue is likely a seized bearing. So when at step 11. Pull off the black cylinder and spray a penetrating lubricant (silicone spray) onto the bearing you can now see. The middle section should spin freely with no resistance.

D Wish - Ответить

Having serviced a E8 brewgroup and still no coffee I bought a new brewgroup and still no coffee but at least I can sell my old serviced group - this little hack on motor has proved this was the culprit. - it working again but coffee is weak but at least I have a clue to fix properly and not spend the £300 Jura and or other “experts” wanted to look at it plus the parts

David Pinnington - Ответить

Congratulations! If the coffee becomes weak, you should check the grinder. How many cups does the counter show? After more than 10000 cups, it may be worn out.

VauWeh -

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