Cuprajake

I happened to come across this video and realised it was shot by Antonio nurri showing him using his machine with a blind filter and then releasing the pressure with the left paddle. As the video shows the lever handle rises smoothly and at a safe speed. I trust that this video is what you were looking to see, Jake?

(Unfortunately this forum doesn’t seem to allow Facebook links but the video can be googled by searching for Talk Coffee’s #2 video on the nurri.)

Despite Nurri only keeping the lever depressed (and the pump switched on) for only 3 to 4 seconds, the rate of ascent of the leve handle once the left paddle is engaged is still at a safe speed.

    Cuprajake

    Cuprajake I was always told, if it ain’t broke don’t fix it 🤣

    Nah, if it ain’t broke, then you can spend time improving it rather than fixing it.

    That’s the great thing about being hobbyists - we don’t have to work to a budget.

        chlorox I think the only situation where one could be in danger for any lever is if one pulls down the lever of any machine out there on an empty portafilter - the one big no no of spring lever practice.

        Another situation that happened to me a few times with the Izzo until I found the cause - group seal drying out to be rock hard causing portafilter to unlock during extraction. No damage though beyond a broken cup once. I don’t expect it to be an issue with the Nurri though as the quick warmup doesn’t mean 16 hours of heat per day like the Izzo had (plus maybe silicone standard?)

            simonko

            That’s interesting- I didn’t change the gaskets on my izzo for a very long time and towards the end of my ownership of it, it did have the tendency to require me to crank the portafilter extra deep in just to make sure it didn’t work itself loose and pop the portafilter out. So your story may have resolved that particular mystery for me.

            On the nurri - u r right there; I generally leave it on for only as long as it takes to warm up (15 mins) and to make my shots and then I turn it off.

                chlorox On the nurri - u r right there; I generally leave it on for only as long as it takes to warm up (15 mins) and to make my shots an

                Most energy efficient way to use the machine.

                Contact me

                  chlorox

                  Short heatup’s definitely a killer feature.

                  Plus additional pros:
                  - Protection of electronics - I’ve seen heat shields in other machines
                  - kitchen will be a few degrees cooler!
                  - colleagues on web meetings will no longer be able to say, “Heh Google, turn off coffee machine”

                  Cons:
                  - Too convenient to have another coffee.

                  The group seal was crazy hard, shattering when getting it out (I thought only latex could get that hard.)

                    12 days later

                    To all Nurri users-

                    After the pump has built up pre-infusion pressure in the coffee-filled basket….and the first droplets drop into your cup and you lift the lever (with the shot now under spring pressure)…how many seconds more does the pump keep running in your machine?

                      Paolo5 I’ll time it next time but from memory it cuts right away. And you’re asking because…???

                          Paolo5 there is an issue on some machines with the pump not activating automatically when the lever is pulled down. Mine has that issue. A part is in transit to me from Antony at Casa Espresso to rectify that. It slips on over the rear of the paddle area I think. It may be that your issue is related. Suggest you contact Antony. Any easy fix apparently.

                          It hasn’t been a problem for me because I’ve simply activated the pump by pressing the right paddle towards the machine. That said, I’m still looking forwardto having rectified.

                          Paolo I’ve been using the 9barista this last week almost exclusively so my memory of the Nurri is a little hazy but as I think about it I seem to recall that I am often deactivating the pump after I lift the lever, by nudging the right paddle towards me.

                          I’ll fire her up tomorrow and report back.

                            Paolo5 The paddle system of springs and switches has to be adjusted just right. If not, the pump will continue to run until the switch actually finally deactivates to stop it. Check to see if there’s an adjuster you can tweak slightly.

                            Contact me

                              I’m doubtful the issue has anything to do with paddle adjustments.

                              The pump is triggered when pulling down the lever by pushing past the black, cylindrical piece of rubber at the top of the post. If this piece of rubber is loose and lifts up rather than pushing out the post for the pump, then the pump doesn’t work correctly. In my case, I simply re-attached the piece of rubber and everything then functioned as it should.

                                cyclezib It’s difficult to remember, I should have looked at a photo of the test machine I had…I remember a network of springs and levers that had to be adjusted correctly. The pump I remember was actuated by a switch, which is why it runs continuously when the lever is down.

                                Contact me

                                  Thr paddle system is a mechanical system and originallly it didnt have the black plastic or rubber clip. The plastic piece was a recent addition to alleviate some users experience whereby the paddle system didn’t cut out immediately once the lever was released. So the plastic clip is supposed to increase the surface area or something like that to enable it to engage. Sometimes the pump doesn’t cut out immediatrly for me too once the lever is released so I jog the paddle or that actuator piece (the piece in cyclezib’s photo on which the black clip.is mounted) a little and that usually works. My machine was delivered without the plastic piece so I’m looking forward to getting the plastic or rubber clip (along with the lovely zebrawood covers for the paddles) to see if it makes it better.

                                  BTW Antonio is finishing up the prototype for the control dial for the pump and its looking sweet. You are going to like how it looks on the back of your machine once the retrofit is ready.

                                    2 months later

                                    My dealer tells me he has received the programming for the firmware for the PID upgrade from Antonio. Looking forward to see how that turns out.

                                    23 days later

                                    LMSC No matter what we do, no product is perfect. Take the Nurri as an example. Not every sample is arriving fully functional to consumers. Still a lovely machine that I’d buy if I needed another one on the table…