Introduction
The gasket of the brewing unit has to withstand heavy usage. Especially the large O-Ring on the piston needs replacing from time to time. Follow this guide to replace the gasket.
These instructions may also help with coffeemakers from Saeco and Gaggia - they are all made by the same manufacturer and have a very similar design.
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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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