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Vibiemme Junior-potential switch issue?

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  • #16
    Re: Vibiemme Junior-potential switch issue?

    Originally posted by 76717A7A716060140 link=1269159333/13#13 date=1269174094
    The microswitch is fine in isolation. The Lever is fine in isolation. It seems that its the action of the lever on the switch that causes it to stick momentarily.
    AND

    Originally posted by 43476178787D62757A140 link=1269159333/14#14 date=1269175009
    exactly the same as mine.......
    Originally posted by 4642647D7D7867707F110 link=1269159333/9#9 date=1269172071
    i rubbed some food grade lube round the part that actuates the switch
    Any lever type action onto a push type button will be an issue of ongoing maintenance unless you have 100% alignment.

    Tis why in critical situations such as assembly lines and medical where this action is required the switch activator is usually modified to manage minor miss alignments.. Most vommen being that of a bearing.... But hey its only a coffee machine.. Use some lube and polish the knob :-?

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    • #17
      Re: Vibiemme Junior-potential switch issue?

      Hmmm...

      The Lever on my DJE was quite stiff to operate for the first couple of weeks but started smoothing out little by little after that to where now, it is very smooth in operation. Never sticks or jams up at all.

      After back-flushing, it does revert back to being slightly stiff/tight in operation but once a seasoning shot is pulled it immediately returns back to smooth operation. Coffee oils doing their job internally I guess.

      If the Pump Switch has been incorrectly adjusted, you should notice that the force being applied by the Operating Cam on the Lever, will continue to push the entire switch inwards, until the end of travel has been reached. This of course, is very detrimental to the ongoing longevity of the Switch and probably causes excessive wear and tear on the Cam Lobe as well.

      If you notice this occurring on your machine and it is still under warranty, itd be a very good idea to contact your vendor and point this out to them. They may give you instructions on how to adjust it (the switch) yourself or request that you bring the machine in to their premises for their technician to adjust for you. I wouldnt just keep operating the machine like this though.... :-?

      Mal.

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      • #18
        Re: Vibiemme Junior-potential switch issue?

        Originally posted by 7E66686161740D0 link=1269159333/5#5 date=1269167154
        can strip away a lot of the grease from the levers internal cam.

        this makes the lever movement sticky.. its a problem on all e61 machines
        Originally posted by 7F78636B6C7E790D0 link=1269159333/11#11 date=1269172688
        Not if they have a toggle switch or a touchpad!  
        Originally posted by 596C6166524E626B6B68680D0 link=1269159333/12#12 date=1269172982
        Then you get to replace both in time, and probably the group solenoid as well  :
        Just pointing out an over-generalisation - not making a value judgement!  

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        • #19
          Re: Vibiemme Junior-potential switch issue?

          Agreed Mal, just give your vendor or importer a call as it helps us to look busy for the boss.

          We do our best to check lever feel and micro switch alignment when we do our pre-sale bench test. I would say if the unit is new and you are feeling a bump in action that the micro switch needs to be set back a mm as suggested Mr Talk.

          Otherwise its important to finish off a back wash with a good rinse back wash (no chemicals same procedure). This will make sure there is no residual chemical to harden and damage your lever group action. Then its a couple of seasoning shots to get the lever feel back to smooth.

          A dab of lubricant on the lever base (where the lever mechanism hits the micro switch) can sometimes be an easy fix .

          IMO its rare that the issue would be a faulty lever switch on a new unit.

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          • #20
            Re: Vibiemme Junior-potential switch issue?

            Originally posted by 1E41594F444F434A4A4949414D422C0 link=1269159333/6#6 date=1269168083
            Originally posted by 766E6069697C050 link=1269159333/5#5 date=1269167154
            Backflushing with descaler
            I really hope that was a typo. NEVER backflush with descaler
            Yep - thanks for pointing that out! definate slip of the tongue :-X
            i meant "scale inhibitor" ie, detergent (pulycaf etc)

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            • #21
              Re: Vibiemme Junior-potential switch issue?

              Originally posted by 524A444D4D58210 link=1269159333/19#19 date=1269241659
              Originally posted by 1E41594F444F434A4A4949414D422C0 link=1269159333/6#6 date=1269168083
              Originally posted by 766E6069697C050 link=1269159333/5#5 date=1269167154
              Backflushing with descaler
              I really hope that was a typo. NEVER backflush with descaler
              Yep - thanks for pointing that out! definate slip of the tongue  :-X
              i meant "scale inhibitor" ie, detergent (pulycaf etc)
              NO!!! Its not a scale inhibitor either. Pulycafe etc are backflush powders. They have nothing to do with descaling whatsoever.

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              • #22
                Re: Vibiemme Junior-potential switch issue?

                Originally posted by 306F77616A616D646467676F636C020 link=1269159333/20#20 date=1269241993
                NO!!! Its not a scale inhibitor either. Pulycafe etc are backflush powders. They have nothing to do with descaling whatsoever.
                Backflush / Rinse / Chemical cleaner / Descaler scale inhibitor / group / basket / temperature etc etc

                The wrong word can complicate things... And some users wonder; why we some times get anal and try to spell out things..


                My HD just died... Can ya bring it in ? But it is a very big black box... HD is not a PC

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                • #23
                  Re: Vibiemme Junior-potential switch issue?

                  Originally posted by 032C2527300F232C2325272F272C36420 link=1269159333/21#21 date=1269242940
                  My HD just died...  Can ya bring it in ?  But it is a very big black box...  HD is not a PC  
                  You phoned a computer shop about your Harley? ;D

                  Greg
                  (Lube inside the lever mechanism, and a smear on the lobe that pushes the microswitch made a huge difference to my COFFEE machine.)

                  Comment


                  • #24
                    "I solved mine by adjusting the lever further in ... ".

                    Apologies for reviving a thread that's been dormant for the better part of a decade, but I've recently experienced the same issue with my lever/switch -- the popping noise is getting unbearable, so I came online to see what I could do. Is the adjustment of the switch an easy procedure? Or will I have to get inside the machine and tinker for a while? At the moment, I'm getting around the problem by using one hand to push in the switch, then the other to pull up the lever, but it's only a band-aid solution. I'd like to take care of the problem permanently, or at least until it recurs, which seems to be every 3-4 years in my case (the last two times, I was due to get the machine serviced anyway, so someone else fixed the problem for me). Thanks in advance. (Hopefully you still check this site!)

                    Comment


                    • #25
                      You can sort it with a roller microswitch: https://www.coffeeparts.com.au/c199900306-microswitch

                      Regardless, these things can be wallet time bombs if not serviced regularly. If it hasn't been looked at for for a couple of years, there are plenty of other potential issues just waiting to cause invoice shock...

                      Don't say I didn't tell you!

                      Comment


                      • #26
                        Originally posted by Caffeinator View Post
                        You can sort it with a roller microswitch: https://www.coffeeparts.com.au/c199900306-microswitch

                        Regardless, these things can be wallet time bombs if not serviced regularly. If it hasn't been looked at for for a couple of years, there are plenty of other potential issues just waiting to cause invoice shock...

                        Don't say I didn't tell you!
                        Ha. Thanks for the tip, Caffeinator. Unfortunately I’m in Tokyo, and the only guy I know of in Japan who services these machines is on the other side of the country. The cost of sending the machine there and back usually amounts to more than the service charge. Despite that, I still send it over every couple of years.

                        I’ll check out that roller microswitch. Cheers.

                        Comment


                        • #27
                          These are normally easy to acquire, several companies in Japan make them for the rest of us to use.
                          Some samples here...

                          Mal.

                          Click image for larger version

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                          • #28
                            An addendum to the above: check size carefully if buying from RS or Element 14. The roller plunger switches they stock are the industrial standard which is too big to fit a coffee machine, especially a VBM junior: both the body of the switch (about 50mm long) and the diameter of the roller (about 12mm) will cause problems.

                            All the ones in the pic above are this size, I haven't been able to find the subminiature size needed through RS, Element14, Mouser or Digikey so I bought mine from a coffee machine spare parts place.

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                            • #29
                              Yep...

                              Handily though, sites like E14 usually provide all item dimensions to facilitate identifying the correct switch. Even better, to buy direct from one of our Site Sponsors. I'm sure there'd be no trouble in getting one sent to you. Bit like sending coal to Newcastle though...

                              Mal.

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                              • #30
                                Thanks all for the tips. Greatly appreciated.

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