La Cimbali M20.... knocking noise
Just picked up an old school machine, cleaned up pretty good..
All seems to be in working order, just one issue I would like some assistance with.. A knocking noise, seems water inlet area, as the noise does not occur if the water supply is switched off.
Heres a quick video of the issue.
Upon a quick inspection its the solenoid witht the clear hose, not the brass one thats knocking
Any help is greatly appreciated
My machine is a little different, a Junior D/1, but it does have a similar "dosing" chamber (small plastic tank).
My dosing chamber is filled by mains pressure via a clear plastic hose, so may be the same.
I haven't got to this level of testing yet (haven't connected to mains), but I assume the fill solenoid will turn on when water in the tank drops below a certain level.
If your fill solenoid is switching rapidly there may be an issue with the level sensor in the dosing chamber. Just a guess at this stage.
Will try switching nodes and see if that helps