looking at the picture of the grinds, that seems amazing (albeit really coarse). are you able to produce grinds of around 200-300 um? this could be great for all the pour-over methods where fines migration cause clogging of the filter papers

aah, Turkish burrs aren't they? why bother... the chamber is fine

Hey there mate, you say Berlin? BWT Bestmax premium is as far as you can get taste-wise without going for RO. Berlin water has really high sulphates content so problem with most decarbonisation filters (Bestmax) is the precipitation of gypsum. The only way to prevent that is RO or using water soften...

worn valve pins or blocked ports

can you take at least one picture of that whateveristhat machine and what you call "opened grouphead"? it might be helpful to guide you where to look. anyway - if there is no water going to the grouphead, I would take the 3-way valve off to see if there is any water coming from HX

speedster? two rounds of teflon tape, must be good quality and stretched into thin layer. or loxeal thread sealant (white sticky stuff), one drop is enough

replace the brew solenoid (3-way valve)

just keep your 1/4" lines as short as (reasonably) possible and attach 3/8" as close after the expansion tank as possible. we have many clients with commercial size RO units running at 3 bar all internally connected with 1/4" - it's all fine but the expansion tanks are usually 10-50 l just to keep u...

bad pump. it could be actually the motor (tried replacing starting capacitor? that is the most common problem). does the pump shaft rotate relatively easy when moved by hand? it should. if you feel excessive resistance there is something wrong. also, the RO has to provide enough flow for the pump to...

hit it with hammer. give it a solid tap or two (the diffusor) so the thread will unseize. like first, before you continue to damage it even more with whatever screwing tool you plan to use. give it a hit