Jura Impressa S Model Pump Housing Replacement

はじめに

The pump support plate sits like a drawer on the back of the unit. Important components are located on it: transformer, pump with diaphragm regulator, magnet for the drainage valve, and sensors for the drip tray. It is relatively easy to remove.

Note: In this guide, the top and right covers are removed. This is not difficult and makes the repair easier. But it's not absolutely necessary, you can also just remove the back and get started.

必要な工具と部品

手順1 How to open a Jura Impressa S model cover

Jura Impressa S Model Pump Housing Replacement, How to open a Jura Impressa S model cover: 手順 1、 2の画像 1

Jura Impressa S Model Pump Housing Replacement, How to open a Jura Impressa S model cover: 手順 1、 2の画像 2

Always remove the power cord from the wall outlet.
Lift out the coffee tray
Remove the lid sealing the coffee bean container
Remove all of the coffee beans you can possibly remove.
Pull the adjuster of the coffee bean grinder straight up
Remove the four T15 Torx screws

翻訳

手順2

Remove the cup heat plate.
It can be opened like a book.
Below the cup heat plate there are three more T15 Torx screws. Remove them.

翻訳

手順3

The top cover is now free. Lift ´er up and set ´er aside.

翻訳

手順4 Jura Impressa S model backpanel

Jura Impressa S Model Pump Housing Replacement, Jura Impressa S model backpanel: 手順 4、 3の画像 1

Jura Impressa S Model Pump Housing Replacement, Jura Impressa S model backpanel: 手順 4、 3の画像 2

Jura Impressa S Model Pump Housing Replacement, Jura Impressa S model backpanel: 手順 4、 3の画像 3

この手順で使用する道具：

iFixit Precision 4 mm Screwdriver Bit

$2.99

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The backpanel is secured with two proprietary screws with oval head. They seem to be rivets, but in fact are screws. The only purpose is, to keep us out of our own devices. You can remove them using an oval drive bit. (Part of some IFixit tool collections or available at a Jura provider or iFixit). In a pitch try needle nose pliers. Here a DIY guide.
Remove the two oval head screws on the lower edge of the backpanel.
Lift the panel up.

翻訳

手順5 Right side panel

Jura Impressa S Model Pump Housing Replacement, Right side panel: 手順 5、 3の画像 1

Jura Impressa S Model Pump Housing Replacement, Right side panel: 手順 5、 3の画像 2

Jura Impressa S Model Pump Housing Replacement, Right side panel: 手順 5、 3の画像 3

Remove the two Torx T15 screws at the bottom of the side panel.
Remove the Torx T15 screw on the front bottom right.
Remove the Torx T15 on the right underside of the front access door. Flip the door open a few inches.

翻訳

手順6

A metal plate rests loosely on the top of the side panel and holds the rotation sensor in place. Note the position of the plate. Simply lift the plate upwards.
When reassembling, make sure that the sheet metal is put back in exactly the same way.
First lift the side panel away a little at the bottom, then lift it out at the top.

翻訳

手順7 Pump housing

Jura Impressa S Model Pump Housing Replacement, Pump housing: 手順 7、 1の画像 1

Unscrew the Torx T15 screw that holds the control board in place.
First lift the board a few millimeters up and then a few centimeters out of the machine. Watch out for the many cables.
Pull the silicone hose off the pump.

翻訳

手順8

The pump support is like a drawer that can be pulled out to the rear. Two latches hold it in place on the left and right.
Insert a flat-blade screwdriver into the slots on the left and right and press the latches upward. At the same time, try to pull out the pump support to the rear.
It may sit a little tightly, but it will come loose.

翻訳

手順9

Pay attention to the diaphragm regulator when pulling it out. You have to push it up a bit so that the whole pump housing can slide out.
These components are now easily accessible and can be seen clearly in the second picture:
Power transformer
Drip tray sensors
Pump
Diaphragm regulator
Electromagnet for the drain valve