I am dispensing epoxy resin and at times epoxy hardener through a filler machine. It needs to be cleaned after each run, but rather than do a complete tear down, I'd rather be able to complete a "soft clean" between like materials. For example, doing a soft clean between two runs of different colors. By "soft clean", I mean running a cleaner through the machine on a cycle mode where the cleaner is run through a 100+ cycles to essentially remove any standing material within any lines and pipe work on the machine.
I'd also prefer to use something to clean with that is not prone to fires or explosion. I use things like acetone on tools and such but that can be pretty volatile. I have soaked things in benzyl alcohol before, but that type of alcohol tends to soften/swell things like rubber o rings and such and I need to avoid that.
Does anyone have a cleaning fluid in mind that may work for me? Thanks.