This forum is now read-only
To login to the new support channel and community forums, go to the Support Portal
LR PreInfusion Module Check Expvalve warning
Hello! Just wanted to see if anyone has run into this before. I recently opened up my LR to adjust my PI for a lighter roast I'm using. I noticed that my PI module is displaying "Check Expvalve" or something along those lines. I'm going to order some things from the store and want to see if I should add any parts to address this if it's an issue. I don't recall seeing this message when I last changed my PI settings. Any input would be appreciated so I can combine things into one order to save on shipping.
Reiss migh add / correct.
when we added the digital pre-infusion module to the LR we kept using the same manifold with the expansion valve in the top that has been used for years in many thousands of Fracino machines without issue
however with the addition of the digital module it brings the ability to display an over pressure message, and so it was felt we should add one
unfortunately this was programmed to display at 12.7 bar, which i think is too low, my preference is for it to show at 12 bar plus 10%, which would be 13.2 bar
so your choices are to ignore it, or if you prefer you can adjust the expansion valve fractionally so it opens at closer to 12 bar, but you are likely to need less than an eighth of a turn counter-clockwise to achieve this
there is a post on this in the permanent file
i am also available on video call if you want me on hand to step you through it
the message will show at 12.7bar; 12.3 might be the last number you see before the message appears if the pressure is rising quickly
its nothing to worry about; a future release will show the warning at 13.2 bar
As per message on another thread, I'm going on what the app is showing me - it never reads higher than 12.3, at which point the display on the actual PI unit displays the warning.