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Rob1 last won the day on August 8

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  1. The service/steam boiler will lose pressure when steaming because....you're steaming. You shouldn't be running out of steam but the pressure can drop quite a bit, but it's designed to take this into account. What valve have you been told about?
  2. It shouldn't be an issue with machines of this type. I'm not sure it would be an issue with any machine without a fault. Maybe if you have a machine prone to water levels in the brew boiler dropping but the Minima avoids the usual cause of that....unless there's a leak somewhere between the brew boiler and the group that allows the level to drop and the group to cool?
  3. It's extremely unlikely to be temperature related assuming the machine has been heated for 30-40 minutes. Fairly certain there is something to be gained from running water through the group for 5 or so seconds prior to the shot (I use the water to heat the cup), you probably gain an extra degree in the portafilter and group. I don't know what you mean by 'pressure working' but there's no need to backflush.
  4. Halving the recipe won't solve the issue. You wouldn't be weakening the shot, you'd be producing half of the same. You don't need a 2:1 and you don't need to get it in 30 seconds. No magic happens with that recipe. If a drink is perceived as too strong it's likely the ratio is too short. Using the single basket will result in a different taste though, likely much less body and more clarity which might solve this but then you're going to have to change grind setting.... In answer your question, as you can probably guess now, no you wouldn't just halve everything.
  5. You should be able to see where those notes are coming from even if you don't agree. The water could well be the issue of not technique. I always say switch roasters if you don't agree with tasting notes.... though you might want to try water with a higher alkalinity first. Maybe mix volvic and Ashbeck or some other combo.
  6. Doesn't look like Lelit made a mistake.
  7. I grind into the portafilter, tap the side to level it, tap once on the counter to settle and tamp. Otherwise I might stir it with a prong thing, use a spinning 'distribution tool' (they all just level) and then tamp. Not noticed any real difference with different methods or different variations of the above. Main thing is to get it done quickly with a repeatable level tamp and to tamp onto an even bed. After trying soft and hard tamps I've settled in between.
  8. Inconsistent prep. e.g. -Dose out by a fraction of a gram or more depending on the accuracy of the scales. -Inconsistent bean quality/roast (not something you can control except for removing obviously pale beans). -Other inconsistency with routine like the way the coffee is dosed into the portafilter (how evenly it goes in in the first place), how much you move the coffee with your palm, how hard you tap and how many times and how these things affect how the ocd tool moves things around.
  9. I'm assuming that's 1/4 open in the second picture not full closed.....
  10. With a coarser grind? You can get a higher flow rate and lower pressure with a very long pre-infusion or bloom phase using the same grind size you'd use for an ordinary shot and normal conditions.
  11. Not necessarily. If there's less compression you should get a higher flow rate. I'm not sure how the opv fits into things re flow rate. I want to say you'll get a higher flow rate to the group but maybe it'll just be the return to the tank that changes. If you're pulling at a lower pressure and coarser grind are you not just getting a lower EY unless you go for a significantly longer ratio like 1:5?
  12. I'd have thought the slightly slower ramp up would help with this type of this...I assumed the whole point of 6 bar was to prevent the puck being compressed and essentially allow a higher flow rate so you can grind finer at 6bar than 9bar?
  13. Looks too fine based on clumping but really impossible to judge grind by looking at it unless differences are extreme.
  14. I'd rather go for the Minima purely for the solenoid e61. My beta is louder than production machines and it is annoying but it's not like it makes noise beyond the 40 or so seconds it takes to make coffee and clean the group. I'm still tempted to look into getting the Mara X pump in there though.... If they were both the same price or close the Bianca is better value objectively speaking though. There are other machines worth considering as mentioned above (discounted V if you have the space).
  15. Afraid not, no idea what the filter does. I'd assume it's a salt softener but maybe not. IIRC volvic will scale the brew boiler too. I was never really happy with volvic muting acidity too much anyway.
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