What you need
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Remove all attachments such as water tank, pulp drawer, brew group.
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Remove the coffee container lid and take out all the coffee beans.
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Lay the machine on its side with the water tank side facing up.
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The side panel is essentially held on the ground by five strong catches. Pry up the pegs with a strong prying tool. It's pretty difficult and you need a lot of strength.
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If the catches are loose, you can pull the side panel away from below. But it's still stuck in other places.
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Use a plastic tool to pry the top cover up a few millimeters and lift off the side panel. Most of the time it's still stuck, especially at the front edge, you have to pull hard.
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If you haven't already done so: Remove the two plastic covers over the cables and the electronics box.
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Unscrew the four Torx T20 screws holding the ceramic valve together.
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Carefully disassemble the valve into two parts.
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Take out the ceramic discs very carefully. If they fall, they may break!
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Slide the slices apart. Clean and descale them.
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Carefully detach and clean the two black rubber seals. Note how they are installed.
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Blow into all canals and check that they are clear.
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If the valve does not find a position, one or both microswitches are defective. Then you have to exchange them. These are easily available standard types from SAIA, the type designation is printed on them.
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Follow the steps in reverse order to reassemble your device.
Follow the steps in reverse order to reassemble your device.
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