Making some great shots with my superlever, but I am wondering about the "pre-infusion position" (first position) on the switch - it does nothing - zilch - zero....I presume it just puts you into position to lift up slightly for pre infusion - as you move the lever up from the middle position the water does start to flow before the cam operates the pump. From what I have read some E61 machines the valves actually open in the first position without lifting up further - does my machine need adjustment or is it the way it is supposed to be
Looking at the manual it seems to indicate the position does nothing then says leave it in this position for pre infusion
"When the lever is lifted just past the first click stop the passive pre-infusion
begins. This allows a slight flow of water onto the coffee. This gentle flow of water
wets the puck slightly which helps with extraction and can also help eliminate
channeling (disruption of the coffee causing a fast flow). If is not necessary to
use this position, but leaving it in this mode for about two or three seconds can
be useful.
Lifting the lever to its full up position
(shown in the photo to the left) closes the
3-way valve and open the brewing path between
the heat exchanger and the coffee.
At the same time, the cam to which the
lever is attached depresses the switch on the
front of the Domobar Super, just to the right
of the E-61 grouphead, behind the cam. This
switch activates the pump.
Thanks for any assistance with my question :-/
Looking at the manual it seems to indicate the position does nothing then says leave it in this position for pre infusion
"When the lever is lifted just past the first click stop the passive pre-infusion
begins. This allows a slight flow of water onto the coffee. This gentle flow of water
wets the puck slightly which helps with extraction and can also help eliminate
channeling (disruption of the coffee causing a fast flow). If is not necessary to
use this position, but leaving it in this mode for about two or three seconds can
be useful.
Lifting the lever to its full up position
(shown in the photo to the left) closes the
3-way valve and open the brewing path between
the heat exchanger and the coffee.
At the same time, the cam to which the
lever is attached depresses the switch on the
front of the Domobar Super, just to the right
of the E-61 grouphead, behind the cam. This
switch activates the pump.
Thanks for any assistance with my question :-/

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