Dunlap Motor Wiring

[JGHannoosh]

Hi all I have a Dunlap 1/3 Hp Model 115.5454 split phase motor that I need help with connecting the internal wiring. This is the same motor that Franklee restored in late 2015. There is a terminal block in the end bell housing that has two places to attach the ring terminals. There are 5 leads coming from the motor and are shown in the picture. One is from the neutral line and contains the thermal reset switch, one is from the centrifugal switch, 2 are from the stator and connected hot lead and 1 is from the stator and connected to the centrifugal switch. I think that the two from the stator and centrif switch tie together and that leaves the other two. When assembled in this way there is about 4.5 ohms across the input leads. Any advice would be appreciated.
Thanks,
Jim

 

[Larryjones]

Your motor is bi-directional and I think the directions are on the name plate which may give you a clue as to where each wire goes. Also I would expect the power leads to be black and white.

 

[JGHannoosh]

Thanks Larry. No info on the name plate. Am still trying to figure out which internal wire with ring connector goes where. Am not sure I've got it right.

 

[LXCam]

Get yourself a copy of an Ugly's electrical reference book. It has about every motor wiring scenario there is.

http://www.uglys.net

 

[Larryjones]

Well, here is a generic wiring diagram for a starting switch. http://www.disconnecteddocumentary....t-motor-wiring-diagram-additional-open-speed/
I might be wrong but, I think the starting winding will have the lowest resistance. You can always try a motor repair place and they will probably tell you in five minutes.

 

[JGHannoosh]

Hi all Thanks for the many suggestions. The best lead I've found is this picture on Vintage Machinery.

It shows how to wire the motor. I think I've got it figured out and will send the diagrams and pix once assembled and running. The thermal reset switch isn't the best and I'd like to replace it but am not finding one yet online

 

[kujinn]

Did you figure this out? I'm trying to rebuild the same motor for my table saw this weekend. Any help you've got would be appreciated!

 

[FrankLee]

Did you figure this out? I'm trying to rebuild the same motor for my table saw this weekend. Any help you've got would be appreciated!

Please post some photos of the current state of your motor and the motor data plate.

 

[kujinn]

I have replicated the multimeter measurements from this thread: https://www.garagejournal.com/forum...l-115-5454-split-phase-electric-motor.435340/

I think I need to wire up the main loop to AC power gated by the thermal shutoff with the startup loop also gated by the centripetal switch. I just don't know how to determine the polarity of each loop or how to get 2 loops out of 5 wire ends.

edit: I also don't know if it's bad forum etiquette to revive an old post, or if I should just be making my own new one.

 

[FrankLee]

I could not find any photo evidence that I had a Dunlap 115.5454 motor in 2015 as stated in the first post of this thread. I did have a Dunlap 115.7448. These are the only relevant photos I have and they likely won't help much.

I may have some other pictures that may help, but I just have to find them or take new ones.

 

[FrankLee]

This is the wiring I cut from an old fubar Companion cap-start motor. This may help if your wire colors match up.

The wires in each zip tie bundle were relatively close together on the stator when I cut them.

 

[kujinn]

I'm not having much success with the colors. There's one clearly black wire, but the rest are all very sawdust-ey and I'm afraid of damaging them during a concerted cleaning effort.

 

[Just a dude]

I'm working on this same motor. I made the rookie mistake of not taking good notes and pics when I took it apart. I think I have the wires figured out EXCEPT where the other button reset wire goes.

Here are the pics I did take. Maybe these will help someone.

 

[FrankLee]

I believe one wire from thermal switch goes to the ON-OFF switch, if equipped; otherwise to the cord.

 

[Just a dude]

Thank you so much. I think I'll be able to put my motor back together now!

 

[Just a dude]

Ok. So before I wire something wrong and fry some part of the motor, this is how I'm planning to wire it up. I looked at the diagram on a thread on Hobby Machinist. There's another diagram showing where wires connect. From those 2 diagrams and reading this thread and others, ... this is what I've come up with.

Thanks for helping a confused dude.

My understanding of how it should be wired. I understand that to reverse the motor direction, the connections from the outlet can be switched.


The ohms diagram:


Wiring Diagram from a thread I don't remember where: The "terminated near motor switch location isn't very clear to me.


My other question is what do each of the wires do? What part of the stator do they operate?
Again, thank you

 

[mike61]

I have the same motor, trying to rewire, would below be correct? Some pic of what I have below
Wire 1 to ?
Wire 2 to Left terminal
Wire 3 to CS
Wire 4 to Left terminal
Wire 5 to right terminal
Wire from CS to TRS
wire from TRS to Right terminal