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The drain valve in Jura machines is largely identical in design. If most of the coffee runs into the tray, the seals in the drain valve may be hardened, or the white cap on the valve tappet may be cracked. You will need a seal kit with two O-rings, as used on hoses, a special, slightly thinner O-ring for the docking connector, two or three lip seals depending on the model, and possibly the cap over the valve tappet. Here we show you how to replace the parts.
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The brewing group has already been removed and disassembled. Now it's time for the drainage valve.
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There will be many pictures
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All you need a small flathead screwdriver.
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Pull off the clamp and pull out the inlet hose. At the end there is a seal, it often gets stuck in the drainage valve. Swap them out when reassembling.
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Pull out the clip on the docking tube
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Pry out the valve body. Make sure the white cap slides out of its hole.
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Detach the docking nozzle.
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Check whether the cap is still firmly in place. If this is not the case, you will need to replace it with a new cap, preferably made of metal.
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Detailed photos.
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The position of the sealing rings are marked green in picture 3.
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The sealing ring on the docking socket is marked in red in picture 2. It is especially important. It's a little thinner than the other two.
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The brackets are marked in red.
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Here is the entire valve in one picture
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When assembling, make sure that the lips of the seals point to the pressure side, i.e. inward, and the flat side outward.
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When installing, make sure that the pressure hose runs through the slot in the valve carrier.
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Apply a thin layer of food-safe silicone grease to the seals before installation.
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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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