the temperature for the cooling water is too cold now and it will cause water on the surface of the corona roll.
this is very dangerous because it may burn the corona device and also the m/c can not run.
in order to run the m/c and test the corona device, there are two solutions: first,please fix the cooling device and increase the degree. if the cooling device will be fixed soon, it's ok ,Mr Ye can wait. Second, please connect the normal temperature degree water and we will try the corona device first. After you fixing the cooling device, we will try with the cooling water.