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Gaggia Classic - works then stops working?..

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  • #16
    Originally posted by metho View Post
    I would personally try backflushing.

    If that fails you have two main options if you investigation pin points to the 3-way solenoid valve:
    1) Try to service the innards of the 3-way solenoid valve. I know it is "non-servicable", but I have personally cracked one open to clean a blocked valve sucessfully. Just be careful not to damage the mating surface!
    2) Buy new.

    Also remember that Gaggia's also can fail from corrosive metal chunks settling to the bottom of the boiler if it is old. These chunks often block the passage ways. You might want to test that these pathways are not blocked on your boiler.

    The only thing that I would recommend from experience is never removing the steam valve from a boiler as the normal sized gaskets never seem to seal the unit after removal.

    Best of luck!
    3-way solenoid valves are definitely serviceable. They wouldn't sell seal kits for them if they weren't.

    Same with the steam valve. Remove it from the top of the boiler if and when necessary. Replace the o-ring with a new one in the correct size. It is a bit of a trap as it's a larger o-ring than you'd expect and doesn't fit snuggly onto the inlet of the steam valve but rather sits there quite loose. When the steam valve is refitted and the bolts tightened it gets flattened to make a good seal.

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