Reply to "Strobic Air Fan Problem"

Bill has a good observation. Either the fan is operating at 1/2 speed or the vibration frequency is at 0.5xSS. If the later case is correct, then looseness or a rub, possibly combined with a resonant structure, could be the problem. If the speed were actually 14.83 Hz then unbalance and possibly resonant structure could be at fault.

Walt
×
×
×
×