I don't know the answer to the question, however I will say if they can bring the pump as a carryon to allow extra time for screening.
At Christmas we flew with my daughter's nebulizer and meds. I was more concerned about the meds making it thru security. They scanned and swabbed the nebulizer multiple times both outbound and inbound. As he said, it's basically a mini air compressor. I would think the same would happen with an electric pump.