Originally posted by 424D574B4F50230 link=1289144599/43#43 date=1313933646
Hi anthls and welcome to coffeesnobs.
The gauge shows you brew pressure. I can think of 3 scenarios when you would refer to it.
1. Backflushing - when it maxes out its time to turn the pump off (but you could listen for this too because the pump gets quieter when it is under load)
2. extraction quality (but you can watch the extraction instead)
3. something goes wrong and you suspect the machine isnt delivering enough pressure - no workaround I can think of except for getting your hands a portafilter pressure gauge which most people wont have at home. The most likely scenario here is that you dont get any coffee coming through even though you are sure youve ground coarse enough. Without the gauge, you suspect the pump isnt delivery full pressure but you wont know for sure ...
The pressure gauge is a bit like one of those gauges on your car dashboard that you dont need in order to drive the car, but might come in handy when something isnt going the way you thought it should ...
The main difference with the PL41TEM is that it adds a PID temperature controller which makes the brew water temperature more stable than on the other models. It also gives you the ability to change the brew water temperature so that you can experiment.
charlie

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