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Post by vorloi on Jun 7, 2009 18:02:50 GMT -5
I am rebuilding a Hunter Original model 23855 circa 1999.
The fan sometimes turns slower than normal then picks up some speed and works fine. This fan as you know has a PSC motor, the capacitor has 2 wires and the part number is 637570000.
Does anyone know what is the microfarad value for this capacitor?
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Post by JW on Jun 7, 2009 21:19:11 GMT -5
7.5
Be aware that I pulled one from a restaurant that ran at exactly 100 RPM on all three speeds (even low, which is usually much slower); changing out the capacitor, which is somewhat of a pain by the way, did not fix the problem. I hope your case is different.
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Post by Andrew G. on Jun 7, 2009 21:49:31 GMT -5
I have working stators if necessary.
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Post by Deleted on Jun 11, 2009 0:19:39 GMT -5
Yeah JW sounds like yours needs a stator. UNLESS a wire is just shorted somewhere. I'm ASSUMING you checked the pullchain.
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Post by vorloi on Jun 11, 2009 22:53:17 GMT -5
I did check the chain switch it was OK, one disturbing fact I found was that both the chain and slider switches use spring contacts. They are so cheap that with time the spring contact will relax and cause a loose connection.
I will eliminate the slider switch and the chain switch, since I never reverse rotation and I have a wall mount reactor to control speed.
Now the stator configuration on this fan is not familiar to me.
It looks like a L type winding configuration, I'll investigate with more detail since I did not find any info on the web.
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Post by JW on Jun 11, 2009 23:24:56 GMT -5
I parted mine out a long, long time ago.
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Post by Deleted on Jun 15, 2009 23:51:19 GMT -5
It should work fine with a new cap.
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Post by vorloi on Jun 21, 2009 22:56:30 GMT -5
OK I put some work on the fan and it has payed off, the fan works beautifully. I will document the work done later and post details on another thread.
This is what I found while overhauling the fan.
Oil level at the reservoir was very low and contaminated. The grooves on the fan center shaft were clogged cutting out lubrication to the top part of the shaft and forcing oil out of the reservoir.
Capacitor is tested OK.
Had to perform repairs on the stator windings connected to Yell ow and Black wires, winding was shorted 1.9 ohms.
I still do not entirely understand this winding configuration but I repaired the bad winding.
Can anyone tell me were I can find technical information or service manuals in conection to Hunter Original Fans
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Post by Deleted on Jun 22, 2009 22:25:59 GMT -5
What did you repair in the windings? Winding repairs are tricky.
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Post by vorloi on Jun 25, 2009 22:06:49 GMT -5
Dan now I have a better grasp on the coil configuration though I would still love to confirm my findings with Hunter service literature...
The problem with the stator coil resided in the multi-tap winding.
I located a short (1.5 ohms) that was reducing the stator field voltage by 75% . Murphy being Murphy means that the repair is going to take place in the worst location, the stator outer perimeter slots. The short was located adjacent to the power lead-magnet wire junction point, on the same slot.
Now I am working on a second unit which also appears to have a weak field. Will let you know how that turns out
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Post by Deleted on Jun 29, 2009 18:00:54 GMT -5
If I have any bad windings I will be sending them to you!
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