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Introduction
The seals in the brew group are subject to high stress. The large O-ring on the piston in particular must be replaced from time to time. This guide shows you how to do it.
This guide may also be useful for other Saeco models and for fully automatic coffee machines from Philips and Gaggia – these devices all come from the same manufacturer and have a very similar design.
What you need
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Open the hatch on the side panel and remove the brewing unit.
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Remove the two Torx T10 screws on the crema valve.
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Lift off the crema valve minding the spring and the glass ball.
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The upper piston is held in place in the frame with four locking pawls. Push down all four latches with a spudger, then remove the piston by pushing it downward.
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Unscrew the Torx T10 screw on the brewing sieve and remove it.
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There are three Torx T10 screws in deep blind holes that hold together the two parts of the brewing unit. Unscrew them and lift off the upper side panel.
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Now you can disassemble the brewing unit into its three main parts: the brewing unit and the two side panels.
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You can push out the lower piston from the brewing unit if you snap the deflection lever out of its socket with a screw driver.
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Clean all parts with very hot water and dishwasher liquid.
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Grease all moving parts with food grade silicone fat. Dont forget the tracks in the side panels.
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Take this opportunity to carefully replace the two O-rings on the support valve. The larger one is at the top. These two seals are stressed during every brewing process. Therefore, lubricate them with food-safe silicone grease.
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On some models, the support valve is covered. In this case, you must unscrew the cover first.
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Follow the steps in reverse order to reassemble your device.
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