Hi guys,
I am currently in the process of adjusting the OPV in my e61 HX machine to get the optimal 9bar brew pressure. the machine gives me > 12bar peak from the factory which is on the high side.
I know in order to get 9 bar at the brew head I will need to get 10bar at the pressure gauge. but the thing I am not sure of is how do you measure the 10bar, I had adjusted the OPV to get around 10.5bar at the gauge by using a blind disc in the PF. however when I actually make a coffee the reading is a bit lower (<9 bar).
Can someone shed some light on this?
Cheers.
I am currently in the process of adjusting the OPV in my e61 HX machine to get the optimal 9bar brew pressure. the machine gives me > 12bar peak from the factory which is on the high side.
I know in order to get 9 bar at the brew head I will need to get 10bar at the pressure gauge. but the thing I am not sure of is how do you measure the 10bar, I had adjusted the OPV to get around 10.5bar at the gauge by using a blind disc in the PF. however when I actually make a coffee the reading is a bit lower (<9 bar).
Can someone shed some light on this?
Cheers.



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