I wanted to to change a small chain in Angels Petrochem. To get sodium hydroxide you have to use the electrolyser.
I changed the recipe to get chlorine, hydrogen and sodium hydroxide solution. With FNEI and Helmod all things seems to be fine.
BUT in the recipie list of the electrolyser the water saline separation is not available, most probably because there are 3 fluid products.
So next step was to modify the electrolysers fluid box to 3 outputs (added one in the middle output side). But still no effect.
The already placed electrolysers have still 2 outputs. If I craft a new one still 2 outputs and no chance to activate the recipie.
I change he water saline separation recipie to 2 fluid output (chlorine and sodium hydroxide solution) and it worked missing the hydrogen.

The continued "chain" is the crystallisation of sodium hydroxide solution to solid form. It worked so far.
My first question is: why does the electrolyser not work with 3 outputs (where do I find the working script [is there one])?
Secondly, is there a possibillity to adjust the fluid box outputs depending on the chosen recipie like assembling machines with optional fluidbox (different topic I guess, because its more on/off rather than switching in between)?
Third, is there a list to show the variables like in the assembling machine script "off_when_no_fluid_recipe = true"? I guess, its hidden in the control script section.
Hope someone can clarify some things to me.
Thanks.
Baruk