Is it possible to have like a SSR Relay hooked up to some pin (like Flood) and have it periodicaly sucking up the dirt automaticaly.
I mean I don't want to reinvent the wheel. But can somebody head me the right direction. Just like the Spindle enable/disable .
And you probably have to insert the gcode manualy, right ?

Well - yes it is.  If you look at the video tutorials it shows you how to hook up inputs and outputs.
You could also run a script on a G code or M code to do just this.

Look at the tutorials.

The other way, of course is to do it manually when you see a problem.