Oh boy, I've never had my hands on one yet and sam has one, but never traced it yet. I do belive I ill ask the factory. dont worry you wont suck beryl dust, you really have to work at it to do it and only the 1-1.5 micron particle size kills you. if the fan powers up, usually the head will start, any clicking noises from the tube area? I'll call the factory on tuesday.