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Electric motor from a furnace.

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  • Electric motor from a furnace.

    It has some electronics on it but would it run with out them if I wired it up direct to a switch? Its inside the fan still. I wanted to make it into an air filter. No idea the size think it may be a 1/2 or 1/3 hp.
    https://www.facebook.com/gregsreinventions2016/
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  • #2

    Re: Electric motor from a furnace.

    most likely yes it will run without the board on one speed but will require the run capacitor.

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    • #3

      Re: Electric motor from a furnace.

      Some high efficiency furnaces have DC fan motors that are powered by a variable speed controller.

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      • #4

        Re: Electric motor from a furnace.

        Originally posted by drzaius View Post
        Some high efficiency furnaces have DC fan motors that are powered by a variable speed controller.
        our furnace has a dc motor for the fan, this is becoming quite common, iirc our furnace is about 10 yrs old and the technology wasnt new then
        my shop is a beaver lodge
        steve, sarnia, ont




        1940's Craftmaster Lathe

        https://www.facebook.com/artistryinwoodca/

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        • #5

          Re: Electric motor from a furnace.

          It should have 4 wires and a ground White is natural, Red is low speed, Blue is medium, and Black is high speed. if you know how fast you want it you can just use a common switch or you can use a 3 pole switch to switch speeds.
          Jerome
          Canada's South Coast

          Port Colborne On.
          CARPENTER noun. (car-pun-ter)
          1) A person who solves problems you can't.
          2) One who does precision guesswork based on unreliable data, provided by those of questionable knowledge. see also: wizard, magician.

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          • #6

            Re: Electric motor from a furnace.

            Ok I forgot about the DC power maybe I will use a different one. I have a few other motors laying around.
            https://www.facebook.com/gregsreinventions2016/

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            • #7

              Re: Electric motor from a furnace.

              Originally posted by Greg from K/W View Post
              Ok I forgot about the DC power maybe I will use a different one. I have a few other motors laying around.
              first see if it is dc, the one Jerome and I described is 120v AC

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              • #8

                Re: Electric motor from a furnace.

                Will do Thanks
                https://www.facebook.com/gregsreinventions2016/

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                • #9

                  Re: Electric motor from a furnace.

                  Ok So on the motor there was the standard sticker giving the phase hp and amperage it is 120 volt so that is good. 1/3 hp 5 amp. But there are these mounted on the outside of the cage as well as a circuit board. So I am wondering if I can by pass them. Ok Guess I have to resize the stupid pics. I hate that. Took them with my phone not like they are hi def or anything. My lord.
                  https://www.facebook.com/gregsreinventions2016/

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                  • #10

                    Re: Electric motor from a furnace.

                    One of the items is a transformer says its 40 va 50/60 Hz 24 volts must be for the control system off the furnace.
                    The other thing looks like a capacitor. 12.5 uf 370 vac + or - 6% Protected P021

                    I don't know what the rest of the numbers are at all.

                    The computer board is about 4" X 6" No idea if that is actually for the motor or not. There is a total of 7 wires coming out of the motor plus a green ground.
                    https://www.facebook.com/gregsreinventions2016/

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                    • #11

                      Re: Electric motor from a furnace.

                      If you can post pics, I could probably tell in about 2 seconds what they are, but...

                      BTW, the link in your signature isn't working

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                      • #12

                        Re: Electric motor from a furnace.

                        I tied to post some pics but they are too big. My wife is a wizz at that stuff. but she is working late.
                        https://www.facebook.com/gregsreinventions2016/

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