Hopper box empty - pellets ran out

Yesterday, as I was smoking a boneless turkey breast @ 250 degrees, the hopper on my YS640 ran out of pellets. I didn't realize until way later. It could have been running empty for as long as an hour or two. When I realized what I had done, I think I turned the Yoder off and filled it with pellets and then turned it back on again. It did cook/smoke the turkey with no problem after that. Is there anything I should be concerned about as far as the YS640 goes or anything I can check that I may have damaged?