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Replacing the Nespresso CitiZ pressure relief valve

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If the pressure relief valve no longer works or it is leaking, it must be replaced. This is shown here.

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  1. Replacing the Nespresso CitiZ pressure relief valve, Dismantle Nespresso CitiZ: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Never forget: pull the plug!

    • Remove all attachments: Water tank, capsule and cup drawer, drip tray.

    • The model shown is also equipped with a milk frother, remove that too.

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  2. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
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    iFixit Precision 4 mm Screwdriver Bit
    $2.99
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    • The bottom is secured by oval head screws.

    • These screws have an oval head that makes them look like rivets (picture 2). You need to use a special bit - also available at iFixit - for their removal. Here a DIY guide. If the right bit is not available, it could be done with a pair of needle nose pliers. Nespresso wants to keep us out of our own machines!!!

    • Remove five oval head screws securing the large bottom panel.

    • Note: this panel is smaller on models without milk frother.

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  3. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The bottom panel is just snapped into place. Insert a metal spudger into the slots and lift the panel out. It sits quite tightly and you might use some force to get it out.

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  4. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the large bottom panel.

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  6. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use a spudger to slide off the two silicon tubes.

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  7. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect the two spade plugs on the blue and brown wires from the power switch. The two left ones remain.

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  8. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove four oval head screws from the small bottom panel.

    • Remove the main device from the base. It´s still connected with some wires, but this doesn´t bother much.

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  9. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The two colored side panels are only snapped into place. However, the latches sit very tight. You really need a lot of force. First lift the lower edge using a plastic opening tool.

    • Depending from the model it might help, when you first pry off the coffee spout. (See next step)

    • Unfold each of the side panels upwards and remove them.

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  10. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:09crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Insert a opening tool in the gap on the bottom of the coffee spout. Pry it off carefully.

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  11. Replacing the Nespresso CitiZ pressure relief valve, Pressure relief valve: crwdns2935265:010crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve, Pressure relief valve: crwdns2935265:010crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • In the first picture, the pressure relief valve is marked in yellow. It is located at the bottom of the machine. It is connected directly to the heater.

    • The spare part is ready for installation.

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  12. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:011crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:011crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:011crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Pull out the two metal clips on the connections.

    • The clips are different sizes. The larger one is for the heater connection.

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  13. Replacing the Nespresso CitiZ pressure relief valve: crwdns2935265:012crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • First remove the two connections on the clamps. Each connection is sealed with an O-ring. Those usually get stuck in the pressure relief valve. Replace those with new ones when reassembling.

    • Carefully remove the valve.

    • A hose attaches to the underside of the valve. This hose needs to be pulled off as well.

    • The valve is now detached.

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Work through the steps in reverse order to reassemble your device.

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To my surprise, newer Citiz machines (ca. 2019), do not have this pressure relief valve (APD, automatic priming device) anymore.

Instead there is only one hose connected to the water tank port.

The water goes via volumeter into the pump (as usual). Then from pump, the water goes to the location of the former APD.

There, we do not have the 3-way APD anymore, but a simply L-shaped connector leading directly to the entry of the heater/boiler.

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