Nivona Caferomatica 770 Drain valve replacement

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Reach into the machine from the front and rotate the expansion tank about 60 degrees to the right and pull downwards.

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To access the drainage valve, the gear box must be removed to access the drainage valve. To do that, the way for the box must be cleared. First, the electronics must be loosened.

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Detach the pressure hose to the gear box.

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Turn the coffee machine so that the metal partition is facing you. The gear box is secured with five Torx T10 screws that must be removed.

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The next steps are tedious. Work carefully and patiently. Make sure that no cables or hoses are getting caught on the box.

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Use a screwdriver to push back on and remove the spring at the bottom of the drain valve.