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EM6910 Sidecover removal

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  • #31
    Re: EM6910 Sidecover removal

    watch this vid. At the 38sec mark is the "pshht!" which is the relief valve letting go of the built-up pressure in the head and exiting it to the drip tray below. You can see it happen if you remove the stainless tray.

    Does this happen to yours?

    [media]http://www.youtube.com/watch?v=vfdkJoZkwqU&feature=player_embedded[/media]

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    • #32
      Re: EM6910 Sidecover removal

      Originally posted by 527D7476615E727D7274767E767D67130 link=1254111162/29#29 date=1254626784
      The rubber blind is usually inside and attached to the rear door...  Or you can use the double floor baskets as it does the same thing..

      A solid Blind is a NO NO on these units...
      Now I feel like a real goose. The rubber thing never seemed to work. Im gueesing I was using it incorectly :-[

      Originally posted by 527D7476615E727D7274767E767D67130 link=1254111162/29#29 date=1254626784
      I would be cleaning and flushing all the lines prior to replacing teh head... That could be more than the unit might be worth..
      All the lines bar the galley through the head are flushed. I was surprise at the lack of scale but thats not siurprising hink9ng on it now, its hardly had any water through them if my guess is right.

      Originally posted by 527D7476615E727D7274767E767D67130 link=1254111162/29#29 date=1254626784
      I do use an ultra sonic but one needs to take some care with some items and the removal and refitting is where YOU / ME introduce a fault and they are the worse kind.
      I have access to an ultrasonic which is why I threw it into consideration. What are the pitfalls I should consider before deciding whether to attempt it?


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      • #33
        Re: EM6910 Sidecover removal

        Originally posted by 6A5A4D5F454946280 link=1254111162/31#31 date=1254643225
        I have access to an ultrasonic which is why I threw it into consideration. What are the pitfalls I should consider before deciding whether to attempt it?
        For one ya need to know what your cleaning.. Sounds silly, but nothing worse that putting in ONE item and then finding springs and little balls etc.. Opps how does this all fit back together

        The rubber blind... Just blocks for a moment and as your cleaning tab dissolves, it also releases some of teh pressure and cleaning fluid flow through the group... When checking ya Gauge... Either the Rubber a OR double floor used... Then in manual after a min or so teh gauge will reach a value... That is the SB sweet spot... Do a search as there is plent to read up on...


        So what is the ACTUAL problem that you believe, your having...

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        • #34
          Re: EM6910 Sidecover removal

          [QUOTE=58777E7C6B547877787E7C747C776D190 link=1254111162/32#32 date=1254648251]
          Originally posted by 6A5A4D5F454946280 link=1254111162/31#31 date=1254643225
          So what is the ACTUAL problem that you believe, your having...  
          There is a blockage in the head in the line b/w C on the diagram above and the rear of the head. I disconected and cleaned all the copper lines b/w rear of the head and the 3-way. I can blow air through them but not from rear of head through to C.


          Two symptoms: no reading on pressure guage & pressure not released after in head after brew is stopped.
          I cant blow air from B through to C

          Pic again to make it easier

          ps you cant see it from this pic but copper line runs left-to-right out from the 3-way/soleniod straight to the back of the head.

          I am correct in thinking that when the brew cycle is stopped that the solenoid should open allowing the pressurised liquid in the head to run out through C, past B, through solenoid valve then into the drip tray?

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          • #35
            Re: EM6910 Sidecover removal

            are you getting any coffee through when you try and pull a shot as normal?

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            • #36
              Re: EM6910 Sidecover removal

              Originally posted by 3B372422243F2E560 link=1254111162/34#34 date=1254659804
              are you getting  any coffee through when you try and pull a shot as normal?
              And what happens if you try for HOT Water... If that little spring valve in the head is playing up you will have all sorts of issues.

              Comment


              • #37
                Re: EM6910 Sidecover removal

                Originally posted by 3F332026203B2A520 link=1254111162/34#34 date=1254659804
                are you gettingany coffee through when you try and pull a shot as normal?
                Originally posted by 133C3537201F333C3335373F373C26520 link=1254111162/35#35 date=1254662753
                And what happens if you try for HOT Water...If that little spring valve in the head is playing up you will have all sorts of issues.
                Everything is working as normal except for the pressure relief in the head when you cut the brew cycle. This is ok if I get it right as the liquid can still trickle out the group handle but if I overdose or grind too fine it all stays under pressure with the resulting spurt of grinds everywhere when the handle is released. Also makes inspection of the puck difficult. Im still making coffee however and when I get it right it is as good as ever. The gauge is registering no pressure but it does work (used martrix air trick to check it) so it all points to a blockage in that line b/w C and B.

                Im fairly certain the blockage is in/near C just where the tunnel does the right angle turn to the rear of the head.

                The spring/non-return valve in the centre (A) was removed and cleaned. It appeared to have no problems.

                The fact that I can still make coffee has me tossing up whether I should live with it as it is :-/ However now that I know its not meant to be like that itll play tricks with my head

                Comment


                • #38
                  Re: EM6910 Sidecover removal

                  Originally posted by 6C5C4B59434F402E0 link=1254111162/36#36 date=1254697630
                  Originally posted by 3F332026203B2A520 link=1254111162/34#34 date=1254659804
                  are you gettingany coffee through when you try and pull a shot as normal?  
                  Originally posted by 133C3537201F333C3335373F373C26520 link=1254111162/35#35 date=1254662753
                  And what happens if you try for HOT Water...If that little spring valve in the head is playing up you will have all sorts of issues.  
                  Everything is working as normal except for the pressure relief in the head when you cut the brew cycle. This is ok if I get it right as the liquid can still trickle out the group handle but if I overdose or grind too fine it all stays under pressure with the resulting spurt of grinds everywhere when the handle is released. Also makes inspection of the puck difficult. Im still making coffee however and when I get it right it is as good as ever. The gauge is registering no pressure but it does work (used martrix air trick to check it) so it all points to a blockage in that line b/w C and B.

                  Im fairly certain the blockage is in/near C just where the tunnel does the right angle turn to the rear of the head.

                  The spring/non-return valve in the centre (A) was removed and cleaned. It appeared to have no problems.

                  The fact that I can still make coffee has me tossing up whether I should live with it as it is :-/ However now that I know its not meant to be like that itll play tricks with my head

                  ROFLMAO...  So true.... Many a time I have persisted and ended up mush worse off and then questioned my intent  ;D

                  However, in this case, it is about getting a dry puck and allowing excess pressure to be safely managed...  Thus I would persist from a WHS point...  

                  As to teh gauge working... That is a side issue  

                  UPDATE: With teh system OFF - Using my small compressor; air was input at C and the gauge moved slightly, with the excess coming out the drain..

                  Thus I can only assume that there is a blockage in the head and or tubing from the take off for the gauge to the head...

                  CLEAN and SUCK and BLOW - Do this for the actual components ONLY... Other wise you could move the offending crap into another section and cause further issues...


                  Comment


                  • #39
                    Re: EM6910 Sidecover removal


                    Originally posted by 5D6D7A68727E711F0 link=1254111162/12#12 date=1254365433
                    facts dont have to be presented in a drab manner (that can be left to accountants
                    Not the good ones.... we can make "youre business is heading down the gurgler" sound like a real attention getter

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