I just powered up the 1943 vintage Cincinnati 16" HD shaper that I have had sitting for about 6 months. It was a working unit when removed from service, I am told, and it is in very nice condition. It has a 5 hp 220/440 motor on it. I verified that it is wired for 220 volts.
My RPC is an Eyelander 10 hp (start 10 hp, run 20hp) that was set up to run a 5 hp 415 volt 50 Hz machine with a set of transformers, so it is a heavy load. I have been using it to power some 1 hp tools w/o problems. When I hit the on switch the motor ground to about 50 rpm and blew one of the cartridge fuses in the mag starter. I replaced all 3 and checked for mechanical trouble. The motor starts with only the load of the belts and the clutch pulley and spins freely, yet won't start. I don't have a good way to measure the amperage at this time, but the voltages unloaded are about 240 volts. Upon closing the contacts the voltage on T1 and T2 drops to about 225. The T3-T1 and T3-T2 voltages drop to about 135 volts as it is trying to start. No smoke or heat anywhere while it is trying to start. This RPC previously ran a 5 hp Quincy air compressor, although it would not reliably start it at full pressure with its broken unloader.
What next?
My RPC is an Eyelander 10 hp (start 10 hp, run 20hp) that was set up to run a 5 hp 415 volt 50 Hz machine with a set of transformers, so it is a heavy load. I have been using it to power some 1 hp tools w/o problems. When I hit the on switch the motor ground to about 50 rpm and blew one of the cartridge fuses in the mag starter. I replaced all 3 and checked for mechanical trouble. The motor starts with only the load of the belts and the clutch pulley and spins freely, yet won't start. I don't have a good way to measure the amperage at this time, but the voltages unloaded are about 240 volts. Upon closing the contacts the voltage on T1 and T2 drops to about 225. The T3-T1 and T3-T2 voltages drop to about 135 volts as it is trying to start. No smoke or heat anywhere while it is trying to start. This RPC previously ran a 5 hp Quincy air compressor, although it would not reliably start it at full pressure with its broken unloader.
What next?
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