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Vibiemme Domobar Piccolo - Boiler leaking

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  • Vibiemme Domobar Piccolo - Boiler leaking

    Hey guys,

    My first post in this forum I just bought a second hand Vibiemme Domobar Piccolo machine recently and overall I'm very happy with the purchase except that I just found out
    that the boiler is leaking a bit every time the machine is started. Judging from the Domobar diagram, I think it's the boiler gasket but I'm also attaching a photo that clearly shows it:
    https://www.dropbox.com/s/gj5jvd5185...%2029.jpg?dl=0

    It's probably 5-10ml of water per session, sometimes it doesn't create a problem, sometimes it drips on cables and causes an electrical surge - so the switchboard turns the machine off.

    What course of action would you recommend? Thanks for your opinions in advance!

    PS. I noticed how Domobar diagram and some pictures online display a white gasket at the bottom of the boiler. As you can see in my photo, there is no gasket at all, at least I cannot see one. Is it possible that the last service shop "forgot" to install it when re-connecting the heating element to the boiler?
    Last edited by dusterio; 30th March 2020, 02:41 PM.

  • #2
    Hi Dusterio

    I just fixed up one of these machines about a month ago, so I might be able to help.

    It looks like the leak is from the bottom. It would be worth checking if there are any other leaks from the top of the machine and a common indicator is scale/white calcified water residue.

    Couple of likely causes;
    1. Heating element not tightened enough
    2. Element gasket missing or perished

    I am not liking that blue colour between the element and the boiler as it looks like it has been glued up with anaerobic plumbers glue. I just checked a few pics of mine during the repair as I recently removed the boiler to put in a new heating element and gasket. No plumbers tape or glue should be required. To be on the safe side I think you need to remove the boiler and crack the seal and see if it needs a new element gasket. This job is pretty fiddly (as things are pretty tight inside the case) and you need to be careful of the thermostat bulb connection on top of the boiler.

    The actual gasket is just a nylon washer which should be around the $10 mark.

    I would also be approaching the seller to ask for a partial refund (assuming it was sold fully working) if you want to continue having a crack at fixing (if you bought via eBay lodge a dispute), just mention you noticed water in the bottom and it is tripping the meter box.

    Comment


    • #3
      Originally posted by roosterben View Post
      2. Element gasket missing or perished
      Thanks for the quick response!

      Do you think (or shall I say "know") there is a quick way to install a missing gasket - eg. disconnecting wires from the heating element, unscrew the element from the boiler (I'm assuming it's screwed in?) and pull the gasket, then tighten and re-connect

      My seller is from Gumtree, so a bit harder to manage post-purchase issues, but I'll try. He actually told me the unit was serviced just a few weeks ago, hence my assumption that perhaps somebody forgot to attach the gasket

      Comment


      • #4
        Actually now that I zoom in that band between the heating element and boiler looks black (maybe rubber), so might have been the blue wires tricking my eyes.

        You could prob try and have a quick look and at least see if there is a heating element gasket there by unscrewing a bit. But there is not enough clearance to fully remove it without taking out the boiler.

        Other option if you can get leverage it might just be a matter of tightening it you will have to be careful as this will put some pressure on the boiler fitting.

        This is what should be in the there (the gasket in this link below)
        https://dibartoli.com.au/vibiemme-do...rt-gasket-kit/

        Comment


        • #5
          After zooming in to the image, noticed (circled) what appears to be a recent water stain still wet on the element flange.
          Could well require a new gasket. Could also be the final resting place of water leaking from the top of the boiler too, maybe a leaky fitting...

          Mal.
          Click image for larger version

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          Comment


          • #6
            Originally posted by roosterben View Post
            You could prob try and have a quick look and at least see if there is a heating element gasket there by unscrewing a bit. But there is not enough clearance to fully remove it without taking out the boiler.
            I took another look and I think the dark grey line is a heating element gasket - yes. It's just not the standard one (all Vibiemme-specialised shops are selling white gaskets) so I got confused initially.

            When I turn the machine on, in a couple of seconds water starts coming out through this gasket. I'll try to tighten the element, see if that helps

            Comment


            • #7
              Originally posted by Dimal View Post
              Could well require a new gasket. Could also be the final resting place of water leaking from the top of the boiler too, maybe a leaky fitting...
              It's not coming from the top for sure - I can clearly see how water appears from underneath the gasket when I turn the machine on.

              Ordered a new gasket already since they are cheap anyway. Trying to find manuals online on how to drain the Vibiemme boiler and disconnect it

              Comment


              • #8
                If you haven't found this already here is the parts diagram;
                https://coffeesnobs.com.au/documenta...work-pump.html

                Comment


                • #9
                  FYI replaced the heat element's gasket and it's all good again, no leaking and the steam pressure seems to be up (leak caused a pressure loss)

                  A new gasket only cost me 6$ on Coffee Parts

                  Comment

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