I agree, Iím guessing since it was dry there could be an air lock? Though for this to happen; bubbles where water only should exit, Iíd think there isnít enough water flow- but the gen sensor should shut down the gen. Maybe check that this is working, Iíd look to see if I could hear and feel the water flow in the separator; then inspect the sherwood attached pump
/impeller. Is there water coming out the exhaust
? It could have gotten hot enough to melt and mess up the separator... certainly interesting.