Why are we changing it. (the pretty short version)
The blower was originally installed in the church basement. Back in 1965 pipe organ blowers for a medium size or larger organ were pretty loud. The blower had ductwork that ran 2 stories up and fed the bellows which in turn feed the pipes.
But they remodeled the place and removed the blower without telling anyone, remodeled the room and now it has to be installed in the choir loft. In the loft, there is only 120.
Now I have to have them send me the nameplate figures from the blower and the size of the feeder, because if the amps are going up, it's going to exceed the 80% capacity of that circuit.