Having only recently started using a machine with a Heat Exchanger Im still getting used to the idiosyncrasies that come with it. At first I thought my Diadema was running a bit hot. I had the boiler set between 1 and 1.1 bar so I drop the pressure down to 0.8 bar but the steaming power was ordinary and I still had to flush what I thought was a lot of water.
Current status is:
Cycling between 0.9 and 1.0 bar
I need to flush approx 240ml to get brew water temperature down to 95*C but I wouldnt mind if the brew water was closer to 93*C
Im measuring the brew water temperature using a K-type thermocouple shoved up the spout of the portafilter if this no good please tell me
I guess my concern is that Im having to flush too much water and or if I dont flush heaps of water Ill burn the coffee resulting in bitter brew...
Please flood me with information and advice. It might be that Im just new to the world of HXs and what it takes to achieve appropriate brew temperatures. I may well be overanalysing things as the coffee produced tastes very good but if there are some experienced HX users out there with tips Id like to hear them.
Ive read http://www.home-barista.com/hx-love.html and it helped a lot.
Current status is:
Cycling between 0.9 and 1.0 bar
I need to flush approx 240ml to get brew water temperature down to 95*C but I wouldnt mind if the brew water was closer to 93*C
Im measuring the brew water temperature using a K-type thermocouple shoved up the spout of the portafilter if this no good please tell me

I guess my concern is that Im having to flush too much water and or if I dont flush heaps of water Ill burn the coffee resulting in bitter brew...
Please flood me with information and advice. It might be that Im just new to the world of HXs and what it takes to achieve appropriate brew temperatures. I may well be overanalysing things as the coffee produced tastes very good but if there are some experienced HX users out there with tips Id like to hear them.
Ive read http://www.home-barista.com/hx-love.html and it helped a lot.

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