Introduction

Many models of Jura Krups or AEG coffee makers have installed this thermoblock. You have to replace it if the coffee is too cold or the flow is - mostly disturbed by limescale.

Opening is described here.
  • Opening is described here.

  • Is the plug really pulled?

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The block is marked red here. Older models have a completely differently shaped thermoblock. But this manual does not fit.
  • The block is marked red here.

    • Older models have a completely differently shaped thermoblock. But this manual does not fit.

  • There are three connections for water or steam.

  • Three cable feeders.

  • A thermocouple.

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Deck the Halls
With tools and Fix Kits
First, pull the clips on the tubing connectors, then pull out the tubing. Then remove the power cables: A gray cable leading to the thermal fuse, a blue one directly from the heater (can also be pulled later) and the green-yellow protective cable is unscrewed. Two small blue cables lead to the temperature sensor, it is unscrewed.
  • First, pull the clips on the tubing connectors, then pull out the tubing.

  • Then remove the power cables: A gray cable leading to the thermal fuse, a blue one directly from the heater (can also be pulled later) and the green-yellow protective cable is unscrewed.

  • Two small blue cables lead to the temperature sensor, it is unscrewed.

  • The hexagon screw in the middle can be loosened.

  • Unscrew the tube holder, then the block is free.

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Here lies the block. If you are lucky you can push out blockages from the openings with a wire. Mostly that does not work. The block can not be opened and must then be replaced.
  • Here lies the block. If you are lucky you can push out blockages from the openings with a wire. Mostly that does not work. The block can not be opened and must then be replaced.

  • This is the thermal fuse. First remove the cable lug, then unscrew and fix together with the cable on the new block, as well as the yellow-green protective cable.

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For mounting, the light carrier must be pulled out by loosening the marked screw. It is attached with two hooks, you can lift them with a screwdriver. The steam valve is actuated by a plastic disc with a cross-shaped cut. To loosen, you have to pull the whole front wall carefully outwards, then you can pull out the entire unit.
  • For mounting, the light carrier must be pulled out by loosening the marked screw.

  • It is attached with two hooks, you can lift them with a screwdriver.

  • The steam valve is actuated by a plastic disc with a cross-shaped cut. To loosen, you have to pull the whole front wall carefully outwards, then you can pull out the entire unit.

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Now you can see why all this was necessary: on the back of the carrier is a recess. Inside is loosely the lock nut to the big screw with which the block is attached.
  • Now you can see why all this was necessary: on the back of the carrier is a recess. Inside is loosely the lock nut to the big screw with which the block is attached.

  • Thus, first the new block is screwed into the carrier.

  • And now go through all the steps again in reverse order!

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Conclusion

Repeat the steps in order to reassemble your device.

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VauWeh

Member since: 10/19/2015

18,422 Reputation

28 Guides authored

2 Comments

I would love to see a disassembly of the Jura pancake-style Thermoblock to Rebuild the seals. Great work!

Lisa W - Reply

Thank you. :-) . Pancake style, thats funny. Next time I have one under my screwdrivers I'll shoot some pictures.

VauWeh - Reply

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