this is a very interesting thing. In the previsious save (spray gun machine) you could add a continuous system with wi-fi that triggers pscn and pbcn (i think) to start/stop a battery with a switch that activates the whole system.
THEN press the button to load oil , first it will only load a small amount oil as the pressure difference will keep the oil from entering the pressure chamber, then wait for the pressure in the oil chamber and the pressure chamber to equalize and then load more oil so that pressure chamber is full
if it does not automatically reload press the fire button again
i was bored so i added a fun little "purge" button on the back, if purged the system will still have enough pressure to reload for a PERIOD OF TIME it will eventually lose enough pressure to not be able to sustain the reaction if the purge button is pressed for to long