Announcement

Collapse
No announcement yet.

Loud noise when using a particular group

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Loud noise when using a particular group

    Hello, have a strange problem. I have a Cimbali M20, when I use the hot water and the right group the sound of the pump is NORMAL, however when I use the left group the pump is SCREAMING, pls help as this is starting to worry me

    Cheers

  • #2
    Re: Loud noise when using a particular group

    Originally posted by 746E64747F373736070 link=1282857972/0#0 date=1282857971
    Hello, have a strange problem. I have a Cimbali M20, when I use the hot water and the right group the sound of the pump is NORMAL, however when I use the left group the pump is SCREAMING, pls help as this is starting to worry me

    Cheers
    See ya local service person...

    What is ya location..

    1: Is it the pump that is actually making the noise ?

    OR

    2: A valve / solenoid that has some crap in it and it is them making teh noise ?

    Comment


    • #3
      Re: Loud noise when using a particular group

      if its not actually the pump I at a guess i thought it might be one of those spring overpressure valves / expansion valves things on a copper pipe.

      i have heard one of those "screaming" as it sort of vibrated to let water out. when it did it let water dribble / squirt into the drip tray drain.

      worth a guess and a look?


      Comment


      • #4
        Re: Loud noise when using a particular group

        Best to take it to a service guy. You could try taking off the cup tray and look / listen to see if the sound is obviously coming from the pump.

        ** But dont poke / prod or otherwise touch anything inside with the power on / connected......

        Comment


        • #5
          Re: Loud noise when using a particular group

          I dont think it is the expansion valve, otherwise the noise would come from both groups. If the pump is screaming on a particular group then I would say it is either the solenoid is partially blocked and if it is the case, try to descale that group or send it to a coffee tech to remove the whole thing and clean it for you or it could be a tiny block in your group head, either way I would recommend a qualified coffee technician to have a look at it.

          Comment


          • #6
            Re: Loud noise when using a particular group

            M20 possibly could have 2 vibrating pumps and 2 expansion valves, my money is on the expansion valve

            Comment

            Working...
            X