Not sure exactly what you mean, but any transformer that gets wet needs to dry out completely before trying to plug it in again.

On the bottom of it is a tab that you can push in and slide the little cover off. It does not open much, but there is a little space for air to get in and out. So leave that open and blow out with air and shake it until no more water comes out, then bake at 150F for several hours.

Best best is to let is set for a full week.

Then try it and see what happens.