Old video, but timeless information. Thanks for keeping this up. I needed this for my dryer. Thanks a bunch.

Such a great explanation. Thank you for helping me. I have come to understand that the “Non Serviceable Switch” attached to the motor is indeed “Serviceable”. I was able to clean the contacts without scratching the plating off. Put it back together and she fired right up! I am sure that sometimes the contacts can fuse together, but they are just dirty, try cleaning them up. (After having taken picks of how it is wired) I would also label the Start and Run wires if they are not color coded. Mine were just bare copper and not labeled.

This was fantastic. Best explanation on this platform.

Thank you! I swear.... I spent hours looking for a simple pinout for the switch... All of the sources gave me wire color but no function or incomplete schematics... I watched your video in desperation and finally... Line on the blue thermal cutout lead and neutral on the far end of the run winding... Thanx Again!

4 being hot always. When you push the switch, you send current to 5 which is in contact to 3. And 3 feeds both the run and start winding and not just the start winding. When the motor starts, then 5 connects to 6 to get current to the run winding since 3 is out.

Do all numbers have same function on all dryer motors

Thanks bud helped me out my switch arm was broke so I just start mine up with a small rope now 😁😂

@gwaygeewaay4253

5 жыл бұрын

Ps it on a homemade lawn mower so now its like starting a traditional push mower haha , with 2 machetes as the blades it cuts very well I would say

Thank you thank you, this video is useful. ❤❤ love it

timer provide hot to motor, start switch provide neutral. when motor started the motor switch did following things: disconnect start coil, connect run coil to neutral, close gas valve or elec heating coil (1-2).

@electronicsprojects4708

2 жыл бұрын

This channel is for technicians, so I don't explain things at a very basic level, the target audience should have a basic understanding already. If you look at my other videos, you will see they are typically medium to advanced. You can find basic explanations of these circuits on KZread, so it doesn't make sense to just put on KZread something that is already on there. In your basic explanation of how a motor works, there is one error, the run coil is engaged when the centrifugal switch is in both positions, it doesn't 'connect' the 'run' or 'main' coil, it's always in the circuit.

Thank you

love when you turn it on the whole thing starts shaking "well that was kinda anticlimactic"

How many working voltage?

This is a very simple circuit, yet I have been confounded. From what I see here, the only thing the centrifugal switch is actually accomplishing is it open-circuits the neutral side of the start winding (disregarding non-motor functions). When still on the dryer, timer set to run/heat and the momentary start switch is pushed? How does that engage the start winding?

@electronicsprojects4708

3 жыл бұрын

when power is applied, the start and run winding both are engaged, after the motor turns fast enough, the centrifugal switch will change states, opening up the start circuit (run winding still gets power) and closing the heat circuit.

This is a perfect example of running a single phase 120VAC induction motor without a capacitor to start it even in cold winter. It does not fall under shaded pole or three phase induction motor. It must belong to split phase single phase or some such thing. But what is the difference in the winding of this to a washing machine motor which needs a start capacitor which they all have? Are there two different type of windings for this type? I assume the motor for the dryer is lighter duty, so it won't need a capacitor to give it enough phase shift for torque, maybe. But all them wet cloth put in a dryer is pretty heavy. Plus I realize that these motors also have to turn just one direction and they only have to have one speed I suppose. ... I don't know if the phase shift of the start winding is different than the washing machine... or how it works out.

@electronicsprojects4708

3 жыл бұрын

yes, single phase split phase. Because of the water in the tub, there is much more torque needed for washing machine motor. They operate at higher current, that's why you don't see 3 phase dryer motors, they don't draw so much current. Like 3 amps or so. Old washing machine motors were drawing 8 to 9 amps. Dryers definitely do the light duty between the two.

I have a whirlpool. My question is what is the clutch for on the front of the motor? Is it even needed? The dryer repair man took mine off and it's working fine. Seems like it's just a round aluminum piece bolted on the front with no special movement. Is it ok to leave it off the motor and operate it?

@electronicsprojects4708

2 жыл бұрын

I am not sure what you are referring to, if you see it in the video, reply with the time stamp and description of the part he removed.

The instant you start the motor, the clutch clicks going in I think. IN a second or so when the motor gathers speed and gets going, should that clutch come back or would it come back at the end once you turn off the motor? Why I am asking because I busted half of the thing pretty much after it fell off the pedestal. I gather I don't have to worry about the heater part of it as I am not using the motor for dryer. Interestingly enough the motor starts fine. However I know the contacts as you are describing. That arm is lame dangling down there inside. It is down instead of up. I need to check to see what is happening. I don't want to be in start winding after the motor is running and the contact not disengaging.

@electronicsprojects4708

4 жыл бұрын

Sounds exactly like what you are saying, start winding is staying engaged. You can test this with an amp clamp, normal running current is 3 to 4 amps. If it's higher the Start Winding is not disengaging.

@alchemy1

4 жыл бұрын

@@electronicsprojects4708 Well, it doesn't appear that there is any start contact because to keep the arm up to contact the start winding require that plastic arm by the clutch to stay proper up. Since as I said it is just dangling, it implies down position. Not only that when I unplugged the motor that arm was actually in the way down there between that washer ( that washer thing that it typically sits on riding on it) and the housing neck. I actually left it up with a screw driver the first time around so the clutch washer comes back by the housing neck. From the look of it is the clutch itself that is the cause of start contact or not contact. My feeling is that the reason the motor starts is probably due to some residual magnetism or something. I notice the contact you are talking about and it is not contacting because the plastic arm is down due to gravity, plus broken. At least now I know what is going one and what does what. If I can find all the bits and pieces I will glue it al together and get I going or I will make plastic cover with a profile that will do the job just for shits and giggles. :-)

How many passes is it do you know?

I noticed there a terminal missing with a slot. Is that an additional ground. On my it is ground, but I have no number labels.

@electronicsprojects4708

4 жыл бұрын

I see that a lot in appliances, that centrifugal switch may be used on other motors that use an added terminal.

Can you use it for a swamp cooler motor

@electronicsprojects4708

2 жыл бұрын

mounting and speed would be different, I would recommend just buying a new motor for the swamp cooler.

Is a dryer motor an AC induction motor or a brushless DC? Sounds too quiet to be a universal motor.

@physicsguybrian

3 жыл бұрын

These are AC induction motors. They run off 110Vac-120Vac so not a DC motor.

I think presenter knows how it is working, yet poorly explained. First, no schematics to match the real wiring; Second, no step by step how motor runs; third, no explanation when he right hand screw driver turns the switch, nor how clutch activates. I know dryer motor working from its schematics, but need further steps to try to repair. In my understanding - not from this video - user pushes button and hold a while, which kicks in the start coil, when he releases the speed activated switch keep the coil powered.