Hi, are you still having a thermometer in the e61 group? Do boiler pid variations modify the thermometer temperature of the group? What temperature do you normally work with and what do you dial on your thermometer? And finally, is this content with your machine? and I'm evaluating between bezzera unica and lelit mara with or without pid Greetings and thank you.
@skkane
6 жыл бұрын
Hi, it's my machine, got it used almost 2 years ago. I have only changed the water pump so far (which costs 15-20$ and can easily be swapped at home) and did a complete descaling and cleaning at a service center last year. Other then the pump, there were no problems with the machine. I was also looking at bezera's when i was searching but found this lelit used for a good price and with the thermometer already added to the group head.. so I couldn't resist :) I did not measure myself the exact temperature but read multiple posts on home-barista that the therm shows around ~2C higher then the actual water temp coming out of the group head. So with the machine idle, PID at 120 (~1.1bar of steam pressure) the grouphead thermo shows 98C. I do a flush (pretty big flush, i'd love a dual boiler :)) untill it drops to 96C then pull the shot. That would make the whole shot pull between 92-94C, which in reality is around 90-92C (so start shot with 96C showing, drops to 94 after first coffee comes out and ends @ 91-92C when i stop the shot. Heard shots taste best at this range, tried @88C but think it works better on african beans vs south american which i use mostly. I'd like to set the pid at 125 for higher steam pressure but the flushes would become way to long with a clean machine (therm shows 100C for a long time even when flushing). When it gets scaley you can up the PID value as the group temp would go lower, due to the scale buildup in the mushroom. Worse scale I got would make the group idle at 83C, PID set at 123. After taking it to service to descale it was 118C PID, 99C group head.
@lorenmark
5 жыл бұрын
If you were to do it over again, would you still get this machine? Am thinking a rotary pump is quieter, and a switchable tank is nice if I ever move into a house, but these things add considerably to the expense. Trying to think long-term.
@skkane
5 жыл бұрын
I would add a couple of extra hundred bucks (1k seems more like it) and get a rotary / dual boiler setup. It's not the pump's noise that disturbs me, it's the very long flushes to get the grouphead down to 94-95c. I keep my pid at only 119, steam pressure only 0.9 bar. I'd like to go to 1.2-1.3 bar on the steam but then the group head would idle at 99.9c or something and the flushes would be WAY longer to get it down to the 94-95C range. A full tank (2.7l i think) makes me like 7 cups, most of it gets wasted during the flushing routine :))
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