Apologies if this isn't quite the right forum for this post.
I just got an NOS Dayton, 5 horsepower, 1730RPM single phase motor that was sitting on a shelf for the last 10 years. It is to replace the aging 3 phase OEM motor so that I don't have to have the phase converter on to keep the compressor at pressure. I mounted it to the tank and wired it (2 phases, #8awg from 35a breaker). I wired it for CCW rotation (T1-T5, T4-T8) as per the panel on the motor. When I switch it on with no load it buzzes (60hz) very loudly and the shaft turns slowly. If I wire it CW Rotation (T1-T8, T4-T5) by swapping 2 of the 4 wires coming out of the motor, It runs beautifully. I Called Grainger (dayton) and they were little help. They emailed me 2 schematics which confirm that I have it wired correctly, but the prints are for a later revision and seem to have a slightly different Capaciotor configuration for the start and run Caps. If it is running fine in one direction, doesn't this mean the windings are intact? Can any one offer some trouble shooting guidance?
(yes I know to discharge the caps before handeling them.)
I just got an NOS Dayton, 5 horsepower, 1730RPM single phase motor that was sitting on a shelf for the last 10 years. It is to replace the aging 3 phase OEM motor so that I don't have to have the phase converter on to keep the compressor at pressure. I mounted it to the tank and wired it (2 phases, #8awg from 35a breaker). I wired it for CCW rotation (T1-T5, T4-T8) as per the panel on the motor. When I switch it on with no load it buzzes (60hz) very loudly and the shaft turns slowly. If I wire it CW Rotation (T1-T8, T4-T5) by swapping 2 of the 4 wires coming out of the motor, It runs beautifully. I Called Grainger (dayton) and they were little help. They emailed me 2 schematics which confirm that I have it wired correctly, but the prints are for a later revision and seem to have a slightly different Capaciotor configuration for the start and run Caps. If it is running fine in one direction, doesn't this mean the windings are intact? Can any one offer some trouble shooting guidance?
(yes I know to discharge the caps before handeling them.)