Dismantling the Jura drainage valve, instructions 2

はじめに

If most of the coffee runs into the bowl, the seals in the drain valve may be hardened or the white cap on the valve plunger may be cracked. Here we show you how to replace them.

必要な工具と部品

手順1 Jura drainage valve

Dismantling the Jura drainage valve, instructions 2, Jura drainage valve: 手順 1、 3の画像 1

Dismantling the Jura drainage valve, instructions 2, Jura drainage valve: 手順 1、 3の画像 2

Dismantling the Jura drainage valve, instructions 2, Jura drainage valve: 手順 1、 3の画像 3

The brewing group has already been removed and disassembled. Now it's time for the drainage valve.
There will be many pictures
All you need a small flathead screwdriver.

翻訳

手順2

Dismantling the Jura drainage valve, instructions 2: 手順 2、 3の画像 3

Images front and back

翻訳

手順3

Dismantling the Jura drainage valve, instructions 2: 手順 3、 3の画像 3

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.
The angled inlet is not installed on all models. The hose is then plugged in directly. As the installation is somewhat tedious, you can also install the part later.

翻訳

手順4

Dismantling the Jura drainage valve, instructions 2: 手順 4、 3の画像 3

Pull out the clip on the docking tube
Pry out the valve body. Make sure the white cap slides out of its hole.
Detach the docking nozzle.
The seal of the docking connector is subject to heavy loads as it slides into the opening on the brewing piston with every brewing process. It is slightly thinner than all other hose seals. If you accidentally fit the wrong seal, the drain valve will no longer work.

翻訳

手順5

The white cap holds the valve tappet and pulls it out. If it is cracked, it can no longer grip it properly. It therefore remains in the position that the cap holds open for it at the moment it happens to be in. The drainage valve no longer works.
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.
Of course, you can also get a new drainage valve.

翻訳

手順6

Dismantling the Jura drainage valve, instructions 2: 手順 6、 3の画像 3

Detailed photos.
The position of the sealing rings are marked green in picture 3.
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.
The brackets are marked in red.

翻訳

手順7

Dismantling the Jura drainage valve, instructions 2: 手順 7、 3の画像 3

Here all the parts of the valve.

翻訳

手順8

Here is the entire valve in one picture

翻訳

手順9

Dismantling the Jura drainage valve, instructions 2: 手順 9、 3の画像 3

When assembling, make sure that the lips of the seals point to the pressure side, i.e. inward, and the flat side outward.
When installing, make sure that the pressure hose runs through the slot in the valve carrier.
Apply a thin layer of food-safe silicone grease to the seals before installation.