Never any VFD issues. I really like the single pump set up and coupled with the vfds it is very reliable. Every function you can select hot, cold or a blend for water temperature. Plus the same pump supplies medium pressure spot free rinse. It makes an excellent final rinse. Customers use it frequently.
I encountered issues with the
JBS compass and have been using ChemQuest for about 4 years Rarely have any tips clogs as their products are a very consistent viscosity. Their products are a thinner viscosity without sacrificing the concentration strength which works well for injector tips.
My systems have all of the small hyrdaflex PC1 injectors and the Hyrdaflex SAM manifold. This is what the have been using on the self wash systems for the last 3-4 years. I have never had any manifold/solenoid issues. I replaced one injector that no longer would draw. I never could tell what caused that injector issue but it's well within what I consider very normal repairs and maintenance of the business.