AFCA Forums Home
Home Search search Menu menu Not logged in - Login | Register

 Moderated by: Steve Cunningham, Rod Rogers, Larry Hancock
New Topic Reply Printer Friendly
Emerson 89649  Rate Topic 
AuthorPost
 Posted: Tue Jun 11th, 2019 01:06 am
  PMQuoteReply
1st Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
Can someone tell me what size capacitor is used on the Emerson 89649?

Back To Top PMQuoteReply  

 Posted: Thu Jun 27th, 2019 06:28 pm
  PMQuoteReply
2nd Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
The CAPACITOR looks exactly like the one pictured in the first post of the following link: https://www.afcaforum.com/forum5/25589.html

The FAN is exactly like the one shown in the following post: https://www.afcaforum.com/forum5/39433.html

I would like to know what size capacitor is required for this particular fan? I'm sure I won't find one configured like the original, but surely I can locate the correct size capacitor, if I can just determine what is required!

PS: This fan was purchased new by my wife's parents just after my wife was born in Jan. of 1954. The fan has been babied and stored for many years. It still looks extremely good - the paint is still in great shape and there is only a small hint of rust in a couple of spots.

Last edited on Thu Jun 27th, 2019 06:40 pm by Tony Lunn

Back To Top PMQuoteReply

 Posted: Fri Jun 28th, 2019 03:41 pm
  PMQuoteReply
3rd Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Tony I wish I had one so I could help you out. Does yours have any numbering at all on it? I think your fan is what is called an Emerson roll about. It was built in response to Westy’s popular Mobileair.

Back To Top PMQuoteReply  

 Posted: Fri Jun 28th, 2019 05:48 pm
  PMQuoteReply
4th Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
Thanks Stan!

It is definitely an Emerson Roll About!

I would have thought that someone on this site would be familiar enough with this model to know what capacitor is required for the motor.

Anyway, there is absolutely no markings on the capacitor and it looks EXACTLY like the one pictured in the link I provided.

Back To Top PMQuoteReply

 Posted: Fri Jun 28th, 2019 06:41 pm
  PMQuoteReply
5th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Electronic caps are cheap on eBay. If no one responds, order a 1.5 & a 2.5. Start with the lower one, if it starts on low & runs at the right speed, you are good. If not, go to the higher one. I have a cap bank on my workbench just for this reason. Also if you don’t have one, get a Kill-A-Watt meter. You can check wattage & power factor. If power factor is around .8 or higher, you cap is close to the right size.
You aren’t located around the Houston area are you? If so, I can help.

Back To Top PMQuoteReply  

 Posted: Fri Jun 28th, 2019 06:52 pm
  PMQuoteReply
6th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Larry Hancock is going to try to see what size his has.

Back To Top PMQuoteReply

 Posted: Fri Jun 28th, 2019 09:02 pm
  PMQuoteReply
7th Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
Thanks Stan!

No, I'm located in SC. I'll give your suggestion a try!

Back To Top PMQuoteReply  

 Posted: Tue Jul 9th, 2019 04:32 pm
  PMQuoteReply
8th Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
I liked the idea of checking the power factor to determine if a certain size capacitor was suitable for the fan. However, I didn't have a
Kill-A-Watt meter, so I ordered one ……….. a Poniie PN2000 since it had such good reviews on Amazon.

While waiting on the meter to be delivered, I came across a 3.0 MFD capacitor. With the capacitor installed, the meter is reading a power factor of 0.913 - based on your comments, that should do just fine OR should I try to get a power factor nearer ONE?

Last edited on Tue Jul 9th, 2019 05:33 pm by Tony Lunn

Back To Top PMQuoteReply

 Posted: Wed Jul 10th, 2019 12:53 am
  PMQuoteReply
9th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Hi Tony, if your speeds are good, sounds good on the cap. You do not want to go above the low 90% range. If your low is too fast, you may want to try a 2.5 mfd. if the low is good, your good!

Back To Top PMQuoteReply  

 Posted: Wed Jul 10th, 2019 05:13 am
  PMQuoteReply
10th Post
Andrew Block
AFCA Member
 

Joined: Thu Apr 26th, 2018
Location: New Orleans, Louisiana USA
Status: 
Offline
What's the voltage rating on that cap vs. what is the voltage across the cap (checked with a meter)?

I learned from experience that a Hunter will generate a higher voltage than 330v, leading to a burned out capacitor.

Back To Top PMQuoteReply

 Posted: Wed Jul 10th, 2019 07:42 pm
  PMQuoteReply
11th Post
Tony Lunn
Guest
 

Joined: Mon Jun 10th, 2019
Location:  
Status: 
Offline
Thanks to both Stan and Andrew!

The voltage rating for the capacitor I installed was 370 VAC. I still don't understand how a simple AC fan motor can generate additional voltage???

I found the following schematic on this site. It isn't for my particular fan, but it should basically represent what I now have. I just don't see how the voltage across the capacitor can be any greater than what is input. What am I missing?

Attached Image (viewed 67 times):

Fan Wiring.bmp

Last edited on Wed Jul 10th, 2019 07:46 pm by Tony Lunn

Back To Top PMQuoteReply  

 Posted: Wed Jul 10th, 2019 07:57 pm
  PMQuoteReply
12th Post
Stan Adams
Super Moderator


Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
Status: 
Offline
Induction motors are interesting creatures Tony. I am not going to write a novel on how everything works, but a PSC induction motor can easily run up to three times line voltage. A 370 volt on an Emmy should be fine, but like Andrew said, some Hunter's will spike those after so long. I normally run a 480 rated cap in a Hunter. If you have insomnia, just type in induction motors & reactance, should get you to sleep fairly quickly. If that doesn't work, add power factor to the equation, sure you will be out in no time.

Back To Top PMQuoteReply

Current time is 07:06 am  
AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > Emerson 89649 Top



Beige Theme By: Di @ UltraBB
UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1643 seconds (13% database + 87% PHP). 29 queries executed.