I am sure you have done this, but make sure you check the PID settings. The default (factory) should be all my recommended settings except for 1 setting, unless they decided to only do this for the UK machines (I never asked)?another_jim wrote:It appears that my PID is lazy; while everyone else's works fine (is there a "why me" emoji?). I was wondering why the machine was delivered set at 95C, and I had to set it up to 98C based on taste. So instead of a temperature study; you'll get a trouble shooting guide over the next few days. That's good for the review, a PITA for me.
It's possible for the thermosyphon to airlock if there are leaks in the brew circuit and then you might get a "cold nose" as you put it. When I am involved in a machine design early enough, I always ensure a boiler with the top plate thermosyphon pipe has a dipper tube around 3cm in (ACS Minima), or like the Duetto has a side tube around 20% down from the top. The Bianca tube comes right out the top (common in lots of dual boiler machines), so any drop in brew boiler level can airlock it.
After so many years of experience, I can usually tell instantly if a group is too cool with a touch on the edge of the saucer and definitely the Bianca doesn't run a cold group, it also has a temperature offset that's the lowest I've ever needed on an E61 dual boiler (a good thing). Normally they are up at 12-15C offset.
I purchased the prototype for my collection, but it's in storage at the moment as I already have 3 running machines. I wish I could share all the videos I have done for the UK user guide, but I can't. What I can say is; there is a lot of depth to using the machine, much more than Lelit have mentioned and at least 8 different shot techniques they don't even touch on. The best method of making a shot is absolutely not even mentioned by them. I think I have hinted at it a lot in my review, so there will be some free guidance there in the videos.
Someone else asked about brew pressure. I recommend setting it at 10 bar....simply close the paddle completely, run the pump and from underneath adjust the screw to 10 or 10.5 bar. This gives the ability to profile up to and from 10 bar. Remembering the 8-9 bar standard is just an idealised pressure averaged out. I found some excellent shots from a 10 bar max and then dropping down.
Also remember to set (normalise) the paddle position, hugely important to get the correct flow profile from the machine. You basically want all the way to the left to be "just" off, giving the widest range of flow possible within a limited arc of movement. Again some hints in the review videos, the review was of the final production model, not the prototype I purchased..
https://coffeeequipmentreviews.wordpres ... /#more-301
It's a really good machine Jim, something is probably not right with yours. No way would I have purchased the prototype for my collection if it wasn't and with 3 dual boilers I didn't actually need a 4th machine!