I have a Ducane outside unit that I noticed was buzzing today and the fan was not spinning. The motor model - K48hxffy-3798. I am a mechanic so obviously the first thing I did was bang on the top where the motor sits. It spun a little, so I did it some more, spun a little more, after hitting for about 30 seconds straight it was spinning fast enough to self sustain. I could also feel the heat from the motor. I'm sure the fan motor bearings are bad and the motor needs to be replaced, but while I'm waiting for the new motor to be mailed out will it do damage to the unit if I don't turn it off until the fan is replaced?