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Expobar Minore IV Steam Pressure

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  • #16
    An update on Steam issues:

    Saturday(27th April) I went to make our afternoon coffees and found the PID sitting at 32C, No Steam Boiler pressure and Power light on indicating trying to heat steam boiler.

    As we had been out for a couple of hours I initially thought we had had a power outage - this was not the case.

    I activated the lever to see if there was any action on the shot side - all ok.

    I then turned the Steam boiler off to see what would happen - within a minute the PID started rising and continued up to 92-3C I was able to pull a shot.

    So as it stands I have no steam and am unable to use machine except for shots, so I have to boil the jug to make long blacks, or I can put a scoop of ice cream into cup and pour a shot over that(incidentally it's pretty good)

    Frustrating to say the least - BACK again for warranty repairs(this will be 4th return) - Perhaps I have been unfortunate in fluking the colloquial "Lemon" as I haven't seen anything similar on this forum or other overseas forums.

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    • #17
      Oof, can't win, can you gordons? I'd be seeking a full refund/replacement from the supplier. Or chasing up with the ombudsman if needed.

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      • #18
        Update on steam issues

        Problems have finally been resolved so I'm now a happy chappy.

        There were 2 issues finally resolved. The following is a brief description as told to me from the repairers.

        1. The replacement pressurestat was defective - replaced

        2. Apparently Expobar have recently started putting a fuse attached to the steam boiler element(external). This was blown, hence the fine powder under the machine.
        This has been removed as is unnecessary. Sounds like an EU directive telling manufacturers how to build things.

        I have now had the machine back for over 2 months and it hasn't missed a beat

        Whilst the machine was with the suppliers for over 6 weeks I had a loaner Bezzera Domus which was ok. I liked the soft close steam and water taps - did not like the hot steam wand or the small little drip tray. It did look nice though and I had "that conversation" about "it looked better in the kitchen one". Sometimes you just have to reply in thoughts only!

        Thanks to everyone who contributed with great advice, it was very much appreciated.

        Gordon.

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        • #19
          Originally posted by gordons View Post
          An update on Steam issues:

          Saturday(27th April) I went to make our afternoon coffees and found the PID sitting at 32C, No Steam Boiler pressure and Power light on indicating trying to heat steam boiler.

          I activated the lever to see if there was any action on the shot side - all ok.

          I then turned the Steam boiler off to see what would happen - within a minute the PID started rising and continued up to 92-3C I was able to pull a shot.

          I've got this exact issue with my 17mth old Expobar Minore IV, which just happened this morning, switched both Steam and Brew Boiler on, came out an hour later and Brew Boiler temp was down to 64c, did some troubleshooting switched
          off steam boiler switch and presto brew boiler comes up to temp.

          I can't see any fuse you mentioned routed via the steam boiler element underneath. Given this is only 17ths old, purchased June 2018 new.

          Anyone got any ideas what the issue would be, PID seems to be working ok, Brew Boiler works when steam boiler switch is turned off, otherwise both switches on and steam boiler doesnt come up to temp to
          switch the brew boiler element on.

          Blown Steam Boiler element?

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          • #20
            The PID Controller may be set to Steam Boiler Priority which will allow the Brew Boiler temperature to lag a bit...

            Mal.

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            • #21
              Sorry to revive an old thread, I’m just hoping to save people some time incase they come across the same issue again associated with the Expobar Minore whereby there’s sandy insulation below the boiler or the heating element on one of the boilers stops working.

              First things first, if the boiler isn’t heating, check that it isn’t something simple like the high temperature reset, ground faults and also check that the machine is infact sending power to the boiler. If everything is in check but the boiler still isn’t heating, it may be that the thermal fuse inside the boiler has blown - this fuse seems to be temperamental, and the fix is simply to bypass the fuse.

              If you need to bypass the fuse, it’s a matter of pulling out these wires (if you can) or disconnecting them. Make sure you remove the wires on the fuse side and not the wires on the element power side. Picture attached to provide some context.

              Click image for larger version

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              inhave intentionally refrained from providing too much information because you need to know what your doing. I was very lucky to have the supplier guide me through this. If it goes wrong you may end needing a new boiler or worse destroying something else.

              hope this helps

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