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My fan motor is not working totaly - Dryers

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PROBLEM; My fan motor is not working totally!
So, i guess that your fan motor is working partially
because it is not working totally.
Please try to be more vague, if you posibably can be.
You will loose 10 points if you actually give any one an idea of what could be wrong with your fan.---ha-ha! sorry,it just seemed too funny to me.
Sounds like:----option #1------- your fan motor is either not running at proscribed speed (fer instance, high is not high enough or low is too low.) This is usually caused by lack of oil on the fan motor bearings.,easy to oil the bearings & dirt cheap too.
but could be caused by an almost burnt out fan motor.In that casethe Motor is not fixable, & needs 2 -B replaced, but dont bother to. It is cheaper to buy another fan at wal marts.
option #2
that portions of the 2 speed or 3 speed selector switch are not totally making contact.
or --option # 3, one of your motor windings could be burnt open.
So,let me start with --#3-- the worst case senarieo
Diagnostic proceedure for Dr. Fixit
You need to supply 120 volts ac in turn to winding lead #1, then to winding lead #2 and then to winding lead #3----
There are 4 wires on a 3 position fan speed switch.
1 wire for low speed,1 wire for medium speed and 1 wire for high speed. This looks like the letter Y with each leg of the Y
[ around the outside of the Y ] being one speed winding. THe neutral return wire would hook up to the center of the Y and this would give you your 3 circuits, depending on which outside leg
that the speed selector switch selects. lo,med or hi--- the neutral return wire at the center of the Y will compleate the circuit, one winding at a time ,depending on speed selector switch setting, for all 3 speeds.
All 3 speed windings need to work for the fan motor to work totally.
If one speed winding is burnt open, the fan motor will only work partially, 2/3rds ,that is. You can still use the fan by cutting off the lead of the bad speed winding and using the other 2 windings.
If 2 wings are bad and dont run, the fan will still work partially with only 1 speed.
If you have no-- or intermittant contact on your fan speed switch,
you will have to order a new replacement switch. This is assume-ing that all 3 speed windings worked properly at their respective speeds , when you tested them earlier , with the speed selector removed from the circuit for testing of the motor windings to see if they each work with the selector switch out of the circuit
If you know that all 3 speed windings run ok , with the selector switch cut out of the circuit, then you know that the speed selector switch is bad.
Firstly,unplug the fan from the electricity so that your hair does not stand up on end, which would surely be a shocking experience.
secondly,
remove the old speed selector switch, noting down on paper, what color wires go where and put the same color wires from the new switch back in the same place that that color wire of the old switch came off of.
(i know this sounds funny, but it really totally works.)
use electrical tape and/ or wire nuts to make electrical connections, if necessary.
With the new switch installed, the 2 or 3 fan motor speed settings will now totally all work.
most electric fans have steel rotor shafts with bronze bearings.
they "call" them oilite bearings,susposedly because the bronze bushing (it is really a bronze bushing) but called a bearing, is oil impregnanted and susposed to be good for the life of the fan.
that is only true if you expect the life of the fan to be ONLY 18 to 24 months which is the average time that the factory oil lasts.
the oil dries up the longer the fan runs and the shaft makes the bronze bushing begin to heat up due to increased friction and eventually wear the round bronze bushinhg egg shaped.
Try giving your bearings a good healthy squirt of sae 30 wieght oil from a zoom spout-- [pull out straw squeeze bottle refillable oiler.]
I recommend oiling both the front and real fan motor bearings once a month.
This is the most common cause of fan failure.
Because I oil my fans bearings once a month,I still have fans that run from 1940,1950,1960 and 1970. The 1940 GE fan lasted 70 years and is still running strong.
Some newer fans have chinese ball bearings , but the ball bearings also die prematurely from lack of needed oil.
Sometimes, you can pry off the bearing race cover to get oil into the bearing.
a good trick here is to use wd40 if you think you cant get sae 30 into the bearing.
wd40 is a n extreemly light wieght oil that penetrates very well
and gets into places where you think it wont get into .
You can totally wet up a fan motor with either
sae 30 or wd 40 or both without worrying about the electric
motor being harmed by the oil.
the oil,sae 30 or wd 40 wont hurt the motor.
On badly rusted and nearly siezed fan motor bushings , or any electric motor as well, I use first wd40 for penetration and then sae 30 for good long duty lubricatin.
You may have to keep squirting ioil in the motor for 1/2 hour and end up with a puddle of oil under the fan motor, but about 40 % of the time ,you can bring back to life what yo thought was a dead motor. Perserverance is required and faith that you can fix the motor. 40 % of the time you get sucess to one degree or another and 60 % of the time ,its kaput for good.
I got all those fans i mentioned before because other people thought the bearing were seized and shot, and put the fans in the garbage pail where I rescued the fans from.
the bearings were almost siezed but far from shot becaue i got oil in to the shafts and bearings and another 12 to 20 years of life from the fans. However,i do oil them monthly in fan season, which is winter time for me, since I use fans to blow the hot air off of my wood stove.

Posted on Oct 11, 2013

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