The system only have the basic failsafe such as loss of pressure, cut pipe and clogged nozzle (50%). But by using two flow sensors per 3-jet we have track any unbalance in flow and identify one of the branch has a clogged nozzle. But if one nozzle on each brach is clogged at the same time, we can't.
The system has 100um primary filter and immediately followed by 30um filter for each pump. Each jet (0.3mm) has it own internal 25um filter inbuilt.
Richard