I have read the entire thread and there have been some good ideas put forth to solve the problems displayed. I have no doubt that the problems are legitimate. Having been around hundreds of Komori machines for many years, I found them to print great and to be very reliable. In many cases, if a...
There are is a valve inline in both the coating supply and return lines that should close during wash up. These lines are purged and rinsed during the wash-up cycle. If one or both of these valves do not close, then water would be introduced into your coating barrel.
This sounds like you also might have calcium deposited in the ink train rollers. A vinegar wash is cheap and will get a lot of it out to see if this gets you in the right direction
I have had many co-workers over my thirty plus years in printing that will always blame a press manufactuer first, and not their own bad habits, procedures or materials.
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