Electronic Hockey How Do I 'refresh' The Top Of An Air Hockey Table?

How do I 'refresh' the top of an air hockey table? - electronic hockey

We just have a table used air hockey with friends. The surface is not bad, but the disc does not "float" very good at it. It is a table-size, not a version for children ... Profile electronics, we have done on top of the vacuum to all the holes and wipe with a damp cloth. What can I clean the surface with the tip or to make it waterproof?