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AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > Rewiring an Emerson 77648-SG
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AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > Rewiring an Emerson 77648-SG | |||||
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| Rewiring an Emerson 77648-SG | Rating: 
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| Posted: Sat Jan 16th, 2021 08:13 am |
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1st Post |
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Dan Cummings Guest
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While on vacation my roommate decided that a cloth power cord was a threat to the house and removed all the wiring from the cord ALL the way up into the capacitor to the fan motor...!!! Among other things he did to my home while I was gone, he no longer resides in my home. I don't have a wiring guide or know which wire goes where... Is there anyone out there that might know how to help me...?
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| Posted: Sun Jan 17th, 2021 11:49 am |
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2nd Post |
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Mark Olson AFCA Member
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Try this one (found in the info section of the AFCA home page).
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| Posted: Sat Jan 23rd, 2021 12:59 am |
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3rd Post |
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Dan Cummings Guest
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I found the speed coil for it. But, ALL three wires have been disconnected. I see where it is supposed to sit, unfortunately I don't even know if it works or where each wire is supposed to be reattached. My multi-tester tested the (3) wires coming off of the fan motor correctly and was able to actually get them correctly connected and configured. Now I have been trying to get any reading off of the Speed Coil. I need a guiding hand to help me figure out what the "Heck" I'm doing wrong...! I'm also uploading Real Time Photos of this messed up project if ANYONE knows even the smallest detail that might just help me get this thing fixed before January 1st, 2023... (LOL) ...
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| Posted: Sun Jan 24th, 2021 12:48 am |
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4th Post |
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Mark Olson AFCA Member
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Post pictures, perhaps we can pick our way through it.
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| Posted: Tue Feb 2nd, 2021 01:21 am |
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5th Post |
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Dan Cummings Guest
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| Posted: Thu Feb 4th, 2021 12:10 am |
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6th Post |
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Mark Olson AFCA Member
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Hi Dan, sorry I have'nt gotten back to you sooner, my computer suffered a hard drive crash and I am attempting a data recovery. I can not see the wires coming off the speed coil in the photograph. I assume that there are three leads in a row. Can you get an ohm measurement from 1-2, 2-3, and 1-3?
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| Posted: Thu Feb 4th, 2021 01:44 am |
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7th Post |
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Dan Cummings Guest
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I get nothing from them once so ever... And I know that I should get some kind of measurment. Now on to something I might be able to help you with... I'm a retired software engineer... Do you have access to another computer... If so download HBCD (Hiren's boot cd) It can and will solve all your problems with your computer.
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| Posted: Thu Feb 4th, 2021 01:52 am |
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8th Post |
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Dan Cummings Guest
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Ok I just got another speed coil. I get readings from all three lines... Now do I use the same logic that I use for the run start connections? Meaning hi, med and low?
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| Posted: Thu Feb 4th, 2021 04:33 am |
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9th Post |
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Dan Cummings Guest
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What reading should I be able to get from the sardine can? Or do I have to wait for power to be applied before I can even get a reading...? And did youy save your drive?
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| Posted: Thu Feb 4th, 2021 08:04 am |
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10th Post |
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Levi Mevis AFCA Member 
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The Sardine Can is a Motor Run Capacitor, you should be getting about 2 or 3 MFD out of it in the capacitor setting if you have that on your DMM.
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| Posted: Thu Feb 4th, 2021 01:30 pm |
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11th Post |
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Mark Olson AFCA Member
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Dan Cummings wrote: Ok I just got another speed coil. I get readings from all three lines...Yes. The only question is which end is low. I would try the highest resistance from the common or middle leg to the end legs as low, unless the physical construction of the coil indicates otherwise.
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| Posted: Sat Feb 6th, 2021 07:44 am |
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12th Post |
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Dan Cummings Guest
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I tried the setup but all I got from the fan was a very large humming...So why am I now getting the humming instead of movement from the fan? Do you think that the idiot that took the fan apart and added three (3) new wires from the motor wired those up wrong? And if so why would I get the 3 different, but correct, readings from the ohm meter?
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| Posted: Sun Feb 7th, 2021 08:34 pm |
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13th Post |
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Mark Olson AFCA Member
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Did the fan ever run since you had it? Are the bearings too tight, does it spin easily by hand? Did you check the capacitor? Is it possible that you made a wiring error? What readings did you get from the new speed coil? I know, a lot of questions, but I am trying to get enough information to go on.
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| Posted: Thu Feb 11th, 2021 08:21 pm |
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14th Post |
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Tom Newcity Guest 
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This is an old diagram that I did many years ago. Hope it helps.
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