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CBHvac
 
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Default Blower on furnace hums and doesn't start


"klm" wrote in message
...
On Sun, 23 Nov 2003 20:15:02 GMT, "volts500"
wrote:



Do you think this could be a problem with the capacitor, solenoid or
transformer?

Yep - or about 100 other things.


Bad cap, bad start winding, bad centrifugal switch, whats the other 97?



Switch off the furnace power. Disconnect the fan belt.


FAN BELT??
Geeezeus..I hope his isnt that old..

Try turning
the motor first then the fan drum next by hand.


Fan drum? It better NOT move...

If either device
feels stiff then the bearings are seized and you can try fixing the
problem if this is what the problem is.

The fan axle is designed to run on dry bronze bearings.


Really? When? Even the old 1950's stuff I work on has oil cups on the
bearings...

If oiled or
greased the heat quickly boils the oil or grease off.


Thats a new one...again...if thats the case..name a model of furnace made
that uses this...

The residue
forms a thick crud that grabs the fan axle. The motor may have the
same problem.


Not if you use the correct oil, like is stated on the units...