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Faema Due - $100

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  • #16
    Whoa that's noisy! So that was with the pump hose off aye? It seems excessive and I'm wondering if it's because of the gravity feed setup. You can just pull the hirschman plug off the 3 way valve to remove any other noises so as to eliminate them.

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    • #17
      I haven't actually looked at your latest photos yet as the c.s app on my phone never lets me see them but I could see your video fine. But I'll check them out asap.

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      • #18
        Faema Due - $100

        I've only just stumbled onto this thread and don't have time to read it all, so sorry if I duplicate any answers.
        I had a Faema Due D92/A1 a couple of years ago. Awesome machine and now that I'm a home owner again I regret selling it. The Due models were Faema's non-E61/91 machines. They had a slightly lighter group head, but were otherwise very similar to other Faema models. So you should be able to find some compatible parts on an E91 machine. Certainly general parts like pipe, fittings and some wiring. Group head and control circuit parts could be the only things that won't transfer over.
        Stop using tank water. If yours is the 2 group version of mine it won't work and you'll wreck the pump. I can't say for sure regarding your machine, but I know that after a LOT of research I found that the particular rotary pump used in my Faema and the way Faema connected it meant that it could only be used with pressurized water. I never found out what the minimum pressure was, but gravity wasn't enough and it definitely couldn't draw from a tank sitting below the bench.
        Mine needed a proper 15A circuit to run. At one stage I tried to run it through a mates 'modified' 10A extension cord. It didn't work, and thankfully no damage was done.
        Mine was in much better nick when I got it, but it still needed a bit of a spruce up and a service. Here's how it came up:
        Click image for larger version

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        • #19
          Originally posted by 260zman View Post
          Whoa that's noisy! So that was with the pump hose off aye?
          Yep, I've disconnected the pump outlet from the boiler fill valves.

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          • #20
            Originally posted by LeroyC View Post
            Stop using tank water. If yours is the 2 group version of mine it won't work and you'll wreck the pump. I can't say for sure regarding your machine, but I know that after a LOT of research I found that the particular rotary pump used in my Faema and the way Faema connected it meant that it could only be used with pressurized water. I never found out what the minimum pressure was, but gravity wasn't enough and it definitely couldn't draw from a tank sitting below the bench.
            Thanks for the info. Do you know if the pumps in the E91 machines are the same? Or are they ok with a gravity supply?

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            • #21
              No idea sorry. Can you see a model number on the pumps anywhere to see if they're different?

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              • #22
                I don't have the E91 machine (yet) so can't check numbers.

                Plumbing the Due into mains water is not an option in the short term so I'll have to continue the testing/rebuild using a gravity fed supply. I'll get the storage container lifted up higher which should help a bit.

                I suppose I'll also look around for a replacement pump capable of drawing from a reservoir below the pump.
                Last edited by greencardigan; 28 January 2016, 03:19 PM.

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                • #23
                  Any idea how much citric acid I'd need to do a full descale after stripping it down?

                  Or how much 'off the shelf' descale solution would I need if I was descaling as decribed here (http://coffeesnobs.com.au/brewing-eq...-properly.html)

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                  • #24
                    Hi mate.
                    Citric acid is cheap, but you'll prob only need 1/2 a kg max. Prob not even 300g.

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                    • #25
                      Thanks. I'll go looking for some. Seems like I have a blockage somewhere in Group 1 or its plumbing.

                      I disconnected the 3-way solenoid and the the pump noise is actually much better. Still a bit loud but it seems the solenoid was making the loud buzz. The group 2 solenoid is quieter.

                      I'm getting flow out of group 2 but it looks a bit slow?

                      Pump without solenoid.


                      Group 2 running. Low flow rate?

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                      • #26
                        Originally posted by greencardigan View Post
                        I don't have the E91 machine (yet) so can't check numbers.

                        Plumbing the Due into mains water is not an option in the short term so I'll have to continue the testing/rebuild using a gravity fed supply. I'll get the storage container lifted up higher which should help a bit.

                        I suppose I'll also look around for a replacement pump capable of drawing from a reservoir below the pump.
                        Rather than replace the pump altogether you could install another one externally on the line between your tank and the machine. This is not uncommon for this type of set up.

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                        • #27
                          Yep, I'm on the lookout for a replacement pump and motor. There's a few Procon pumps for auction ATM but they're clamp mount ones.

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                          • #28
                            Why would my boiler be filling when running only the pump? Could the manual fill valve or auto fill valve be stuck open a bit? I have the drain on the boiler open and the water flows out once the pump starts. The pump pressure gauge rises to 3 bar.

                            I found that my boiler was 2/3 full. No wonder it was heavy trying to shoehorn it into the car when I picked it up!

                            Also, after draining the boiler, the water level in the sight tube hasn't moved and still shows over full. Must be a blockage.

                            Boiler filling whenever pump is on.

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                            • #29
                              So I picked up some Caffetto descaler from the local supermarket. It's a 250ml bottle and should mix to 2 litres of descaler. Will that be enough to descale both HXs? I don't intend to descale the boiler just yet.

                              Also, will the descale solution descale the water inlet pipes, inlet valves and pump given that they will contain cold descaler? I understand the descaler needs to be hot to work?

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                              • #30
                                You do realize that if you heat the machine up to operating temperature and then pump the descaler through the HX/Grouphead it will flash to steam in the HX leaving behind all those wonderful chemicals in the HX right?


                                Java "Fun with HX's" phile
                                Toys! I must have new toys!!!

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