AFCA Forums Home
Home Search search Menu menu Not logged in - Login | Register
AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > ~1958 Emerson 79648-SD wiring diagram?

 Moderated by: Steve Cunningham, Stan Adams, Rod Rogers
New Topic Reply Printer Friendly
~1958 Emerson 79648-SD wiring diagram?  Rate Topic 
AuthorPost
 Posted: Sat Dec 14th, 2019 04:23 am
  PMQuoteReply
1st Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Just bought this puppy for $20. I'm fairly positive it's been rewired incorrectly. Does anyone have one that works? It looks like someone worried the positive directly from the wall to the motor. The negative goes into the speed control and then to the motor.
Also had dirt dobber nests in it. 

Attached Image (viewed 305 times):

IMG_20191212_141014.jpg

Back To Top PMQuoteReply  

 Posted: Sat Dec 14th, 2019 04:27 am
  PMQuoteReply
2nd Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Nests

Attached Image (viewed 307 times):

IMG_20191212_170110.jpg

Back To Top PMQuoteReply

 Posted: Sat Dec 14th, 2019 04:28 am
  PMQuoteReply
3rd Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Wiring. Bad picture.

Attached Image (viewed 293 times):

IMG_20191213_223948.jpg

Last edited on Sat Dec 14th, 2019 04:29 am by Thomas Nicholson

Back To Top PMQuoteReply  

 Posted: Sat Dec 14th, 2019 01:00 pm
  PMQuoteReply
4th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Those are very simple as they are shaded pole. One motor wire goes straight to the cord (neutral side), the other goes to the far right position on the switch looking down on it from coil side. The hot wire of the cord goes the the terminal under the switch.

Back To Top PMQuoteReply

 Posted: Sat Dec 14th, 2019 01:09 pm
  PMQuoteReply
5th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Do you know if anyone has a diagram? It is currently wired (from the wall to the motor) red straight to the motor, black into the speed control and then out of the other side of the speed control and into the motor. Definitely not doubting you, busy want to know what the pinout on the speed control is.

Back To Top PMQuoteReply  

 Posted: Sat Dec 14th, 2019 02:23 pm
  PMQuoteReply
6th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Here you go.

Attached Image (viewed 279 times):

8B60B115-40C5-4CC4-ADBA-0FF06ED0EDFA.jpeg

Back To Top PMQuoteReply

 Posted: Sat Dec 14th, 2019 02:28 pm
  PMQuoteReply
7th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Perfect! Thanks! This is my first resto.

Back To Top PMQuoteReply  

 Posted: Mon Dec 16th, 2019 02:47 pm
  PMQuoteReply
8th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Got it wired up and for some reason it seems as though it is going waaay too fast. I've seen talk of adding a capacitor. Would you do that in this case or no?

Back To Top PMQuoteReply

 Posted: Mon Dec 16th, 2019 03:52 pm
  PMQuoteReply
9th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Also I think it is spinning the wrong direction. It is spinning clockwise and the blade tightens on CCW.

Back To Top PMQuoteReply  

 Posted: Mon Dec 16th, 2019 04:56 pm
  PMQuoteReply
10th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Hey Thomas,
Your motor is a shaded pole, it doesn't use a capacitor. Do the three speeds work? If not, you may have a bad choke coil. All Emerson desk fans run clockwise, the wind load on the blade & the torque of the motor help push the blade counterclockwise keeping it tight.

Back To Top PMQuoteReply

 Posted: Mon Dec 16th, 2019 04:59 pm
  PMQuoteReply
11th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
All three speeds work. I honestly think my blades are unbalanced or something because it sounds like it's fighting itself a bit.

Back To Top PMQuoteReply  

 Posted: Mon Dec 16th, 2019 05:28 pm
  PMQuoteReply
12th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
A 79648 is a normally a very quiet fan, but blows a LOT of air as they were built for commercial use. If your blades are unbalanced, the fan will shake. I have also seen a lot of instances where the blades had been "flattened out" reducing the pitch to reduce the amount of wind they produce. This causes the fan to be rather noisy.

Back To Top PMQuoteReply

 Posted: Mon Dec 16th, 2019 05:42 pm
  PMQuoteReply
13th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
https://youtu.be/8N3vhnLjdEI
I know I'll get flack for the color, but happy wife, happy life.

Back To Top PMQuoteReply  

 Posted: Mon Dec 16th, 2019 05:49 pm
  PMQuoteReply
14th Post
Thomas Nicholson
Guest
 

Joined: Thu Dec 12th, 2019
Location:  
Status: 
Offline
Stan,
Thanks for all your help. This was a fun project. Still got some finishing touches to do, but it works!

Back To Top PMQuoteReply

 Posted: Tue Dec 17th, 2019 12:58 am
  PMQuoteReply
15th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
The speed looks right Thomas, the blade looks a bit out. I could barely pick up a rattle while it was oscillating, if it has a rattle, you may need to shim the rotor. Paint job looks great!

Back To Top PMQuoteReply  

Current time is 11:25 pm  
AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > ~1958 Emerson 79648-SD wiring diagram? Top



Beige Theme By: Di @ UltraBB
UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1951 seconds (24% database + 76% PHP). 27 queries executed.