Question about La Marzocco Linea Series Group 3 Espresso Machine Espresso Machine

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Grouphead not dispensing water

Four group machine. second from left group has pressure but is not dispensing water

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  • Anonymous Mar 16, 2014

    we bought a used cecilware venezia machine. The make and model sticker is worn off, but it is a two group machine. The problem we are having is the dispensing pressure. We can't seem to get the pressure above 5-6 Bar, and the shots we are pulling are slow and barely any water is coming out. How do we adjust the pressure? It has a manual dispense button for the groups, if that helps identify it's make and model.

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Remove the shower screen and press button to brew, if water flows the the holes in the screw/diffuser is blocked, if water does not flow then the blockage is at the solenoid or within the group head chamber. This problem I have notice when someone brewed without the shower and screw in place.

Posted on Jun 30, 2009

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Posted on Jan 02, 2017

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Their are four posible reasons for above problem as follows.
First the Vibarating pump not creating pressure, usaly if here the sound it is pressing but not always. You can loose the pipe nut after the pump to see if you have any pressure after you press the coffee button. Be carefull with the water leaking.
Second the coffee solenoid valve that is on the grouphead might be stuck from dry coffee, it can be removed and cleaned with hot water and a wire brush.
Third the coffee group shower and inside round dish might also blocked from dry coffee, remove it and clean it.
Finnaly the more difficult problem might be that boiler-thermoblock is full off scale. So you must remove and descale the thermoblock boiler and the copper pipes to them.
This problem is the more difficult to be performed however if the water you have use was very hard then this is the most posible.
Good luck,
Remeber to vote for this answer.

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Their are four posible reasons for above problem as follows.
First the Vibarating pump not creating pressure, usaly if here the sound it is pressing but not always. You can loose the pipe nut after the pump to see if you have any pressure after you press the coffee button. Be carefull with the water leaking.
Second the coffee solenoid valve that is on the grouphead might be stuck from dry coffee, it can be removed and cleaned with hot water and a wire brush.
Third the coffee group shower and inside round dish might also blocked from dry coffee, remove it and clean it.
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This problem is the more difficult to be performed however is the most posible.
Good luck,
Remeber to vote for this answer.

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