| Original message
|
Replies:
|
| Dixoncc
 |  "Re(1):help with commercial carrier unit"
, posted Sat 26 Aug 15:52  
Also what is the amp draw on the fan motor itself, is it pulling LRA ....alot more than its supposed to!!! if it is you will need a new one
|
| Dixoncc
| "Re(1):help with commercial carrier unit" , posted Sat 26 Aug 15:47
you need to ohm out the fan motor, is this a three phase fan motor or a single phase motor, I would guess it is a single phase fan motor, Disconnect all power to the unit. Then check Common to start, then common to run, then start to run. if any of them show infinite ohms then yo have an open winding, no resistance and you have a short in one of the windings of the motor.also you need to check to see if the motor is grounded out, that is, check you start to ground, run to ground and then common to ground.. Scratch the side of the motor to removee the paint and expose the bare metal of the motor or compressor that is where to check your ground, if a winding has broken and is touching the metal casing this is how you determine if it is grounded out, Also, if this is a single phase motor you will need to test the run cap, you have to have a meter that measures Uf which is micro ferads and the ammount is located on the cap or on the motor plate..if i cah help any more let me know///
GO NAVY!!!!
|
| | fixitnow
| "Re(2):help with commercial carrier unit" , posted Sat 26 Aug 20:48
i believe this is a 3 phase condensing fan motor. there was
no capacitor attached to motor...
|
| | Shawn T
| "Re(3):help with commercial carrier unit" , posted Fri 15 Sep 17:13
If the fan motor were a three phase, there would be no capacitor.
Remember to vote Republican!
|
| | Dog Biscuit
| "Re(3):help with commercial carrier unit" , posted Sun 27 Aug 00:43
Follow the two brown wires coming from the fan motor and you might find a capacitor remotely located.
To err is human to repair divine
|
|
|
