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Lack of flow thru group

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  • #16
    Originally posted by Dimal View Post
    Do you have a new OPV as yet?
    As "sprezzatura" pointed out above, this can be replaced easily and is likely the main issue...

    Mal.
    Hi Dimal, if the plastic part is the OPV no I don't. I now believe it's the brass fitting between the pump and the plastic part which I think is the priming valve, correct me if I'm wrong.
    I took the plastic part off, the OPV? (which I thought must have been cracked because it was leaking), cleaned it up and screwed it back in with some sealant, the leak has now gone but there is still back flow into the tank as soon as the pressure starts to build up.
    If it is the Primer Valve can they be disassembled and cleaned or does it need to be replaced?

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    • #17
      Out of interest....

      Does the Leva on the side of the Group still feel normal in its operation? That is, you can feel the internal valves being operated by the Leva Cam?
      If your machine has a Brew Pressure Gauge, does this indicate normal pressure when the pump is running?

      I'm not familiar with your specific machine but in general, the OPV (Over Pressure Valve) is that component that has the water return line heading back into the water reservoir. If this is stuck open or a bit of foreign matter has become lodged in the valve seat, water will be continually redirected to the reservoir.

      I'll leave it to those familiar with your machine to make any further suggestions...

      Mal.

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      • #18
        Mal is as ever the diplomat.

        My feeling is it's time to take the machine to someone who knows what their doing, notice your in Adelaide, these people are pretty switched on.
        Complete Cafe Services 45 Charles Street Unley, Phone08 8338 0600
        Last edited by Yelta; 21 July 2016, 11:49 AM. Reason: Removed Commercial Link(s)

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        • #19
          Thanks Mal and Yelta, I have taken the brass fitting apart (OPV) and given it a good clean out, put it back together and I'll give it another try when the sealant has had time to set. If it still leaks I'll take it down to CCS.
          Last edited by b430m; 21 July 2016, 12:35 PM. Reason: removed commercial name

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          • #20
            Just a quick update on my machine.
            Apparently the only major problem was fixed by me by removing the leaky part, applying some sealer and putting it back together. The plastic or nylon part in the photo is actually a diaphragm that reduces the noise of the pump.
            i did take the machine to the service department as per Yelta's suggestion, I dropped it off at 10:00am on the Friday and they called me at 2:00pm to let me know it was ready to pick up, excellent service.
            All they had to do was a general service, adjusted the steam boiler temp and the pump pressure via the (brass) OPV, not what I originally thought was the brass fitting attached to the nylon fitting. They also pulled the E61 apart changed some washers and gave it a lube and now it's working as good as new.
            Thanks again Yelta for pointing me in the right direction, I would certainly recommend them to anybody looking to have some repairs done.
            The only downside to going there is seeing all the new shiny machines, they had a lovely Profitec Pro 700 waiting for someone to take home!

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            • #21
              Originally posted by b430m View Post
              Just a quick update on my machine.
              Apparently the only major problem was fixed by me by removing the leaky part, applying some sealer and putting it back together. The plastic or nylon part in the photo is actually a diaphragm that reduces the noise of the pump.
              i did take the machine to the service department as per Yelta's suggestion, I dropped it off at 10:00am on the Friday and they called me at 2:00pm to let me know it was ready to pick up, excellent service.
              All they had to do was a general service, adjusted the steam boiler temp and the pump pressure via the (brass) OPV, not what I originally thought was the brass fitting attached to the nylon fitting. They also pulled the E61 apart changed some washers and gave it a lube and now it's working as good as new.
              Thanks again Yelta for pointing me in the right direction, I would certainly recommend them to anybody looking to have some repairs done.
              The only downside to going there is seeing all the new shiny machines, they had a lovely Profitec Pro 700 waiting for someone to take home!
              Well done, good outcome.

              Comment

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