Flushing Latex Striper

In Kalifornia we are mostly limited to latex paint. In the past I would flush with water and would be ready for the next job. I'm no longer striping full time as I am managing a branch location of asphalt oils application company and tank farm for the last few years. My stripers are sitting longer between week end jobs and paint reformulation has me concerned about keeping my 5900 and 3900 reliable. I plan on doing a through service on my machines in the next several weeks. I was thinking of flushing with solvent to remove built up paint on the interior. Any suggestions as to what solvent to use and how long to leave it in the system. Or am I better off not messing with it for fear of softening up paint without removing it that might create problems down the road. Prefer specific experience versus opinion

If you wash it out then the innerds should be reasonably clean, it's the pick up tube that gets all the buildup. The metal part you could fill with paint remover and let sit a bit,

I use paint thinner for extended storage and as far as build up goes id address it if your are having problems but if its not releasing and causing problems id leave it alone. the best cure ive found for removing build up is replacing the hoses and cleaning or replacing the pickup tube.

Since it's sitting longer between uses I was wondering if I should do something different. I will be replacing the pick up hoses along with general cleaning and bearing packing, spark plugs oil changes. Since it's latex only I don't want to run solvent through it if there's a chance it is going to cause problems without any real benefit. As usual my instincts seem to be the way to go. Thanks for your input.

Always seems like our troubles start when we run a hot thinner through a machine after latex. We seem to have the best luck just using lots of hot water and storing with mineral spirits or RV antifreeze.

X2 on the RV antifreeze. I have good luck with it so far. We also use it on our road lazer for the municipality that I work for, it works well, lets us pick right back up where we left off with out an extra step, when it comes time to start painting again.