In places with very hard mineral deposits, one solution is to put an inline mechanism that dispenses a very small amount of citric acid into the water supply. I

In places with very hard mineral deposits, one solution is to put an inline mechanism that dispenses a very small amount of citric acid into the water supply. I'd guess that, for the amount of exposure time that your dishwasher components have with vinegar, it's not a problem. Same as the above poster, I've run rinse aid and vinegar both, with very similar results.