Testing a sump pump is an easy task, whether it is a pedestal or sumbersible. Basically, all you have to do is fill the sump with water and hope that the pump turns on. You probably have a submersible since you cant see the pump very well. Obviously you will have to remove the sump cover, if one is in place before you can fill it with water. Just try this and well go from there if it doesnt work correctly. Hope this helps.