I did not run vinegar in my set up. I ran a strip run full of water.
then another strip run using 10 gallons of cheap wine as a sacrifice run
after those 2 runs i was ready to get serious
and run a full 10 gallon sugar wash
saved that run
used it to run sweet feed whisky
You should do a 1:1 water/vinegar cleaning run then do a sacrificial alcohol cleaning run. After that it's good to go. The point of this is to strip away any flux, oils and foreign matter that can otherwise contaminate an ethanol run you intend to drink.
50/50 half gallon of each for 30 minutes or until you get bored. If stainless steel use dawn soap and water to just wash it hefore use....copper, and copper packing need the acid wash....so says George on Barley and Hops (Youtube). Check him out, he has a video for everything concerning distilling.
I use copper packing, and to refresh it between runs I clean it in a sonicator in a hot (~140f) bath of 50/50 vinegar and water with a bit of salt. Always comes out clean, but I rinse it well and air dry completely to eliminate any lingering vinegar stank before re-use.
I did two vinegar runs, then rinsed it, and then did a sacrificial run. The sacrificial run looks, smells and tastes the same as the feints it was that went in. It went into my feints jar and I'll be drinking it in the future. I'm not throwing it away and I don't think there's anything in there that's bad for you. It's an old beer keg with all copper parts from the neck of the keg and up.