Rampage98 wrote: ↑Wed Jan 11, 2023 8:10 am
Thanks for the reply guys. Just so you know what i'm capable of, i'm a retired electronics computer tech with 31 yrs at the Boeing Co in Seattle working robotics & cnc machines in equipment maintenance. I have returned home to my small town in Columbia Falls, Montana to have fun, and as you can guess it, restoring our local fire dept's hall siren as my first hobby project. I will get this going & i appreciate all the comments and the info from everyone. Cheers!
That makes me feel a lot better giving this advice... You will want to find a 60A Dual Pole contactor rated for 240V, and the coil voltage to close the contactor will want to be a 120V contact, unless you have a control system capable of handling 240V as a control circut. As you have some experience, I would recommend attempting to locate an AR timer, but they are occasionally hard to come by. As the controls are entirely gone, I recommend either hooking up an Arduino to a Relay board that has a coil rated for 5V and is Normally Open, and is capable of switching 120v. Then it is a matter of hooking 120v into the relay, and in series with the coil on the contactor. Then you will want to find a 60A 240 service, wire it thru the contactor making the contactor in series with the 240V circuit. It should be pretty easy to make a script that closes the relay for 180 seconds (standard 3 min operation) for steady, and it is a little more intuitive to make a wailing signal. You may also want to look into getting the motor rebuilt with fresh bearings and a turned commutator to ensure full motor health. Good luck with this venture!