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-   -   Inside Central air not working (https://www.askmehelpdesk.com/showthread.php?t=757693)

  • Jul 15, 2013, 05:11 PM
    smoothy
    There are plenty... but I can't personally recommend any specific ones.

    If you use a credit card you are pretty well covered. Perhaps Stratmando has a personal favorite or two.
  • Jul 15, 2013, 06:28 PM
    hedwards89
    Would taking the motor out and visibly verifying the part number be the best way to find the correct motor? Or is there an easier way to tell?
  • Jul 15, 2013, 06:50 PM
    smoothy
    Quote:

    Originally Posted by hedwards89 View Post
    Would taking the motor out and visibly verifying the part number be the best way to find the correct motor? or is there an easier way to tell?

    Without access to the service manuals for that furnace (something I don't have) that might be the only way.

    You can clean out the crud while its apart too.
  • Jul 16, 2013, 03:48 AM
    hedwards89
    Yessir, that sounds like the plan.. I might post some sort of instructional video for future problems that other people have while I'm at it.
  • Jul 16, 2013, 05:09 AM
    Stratmando
    Maybe try Marcone or Grainger for the motor, may be better places?
    HP, RPM, Voltage, and the rotation are most important.
    Verify correct rotation when installed, may have to swap with 2 pairs of wires, may come with the capacitor, or the capacitors value may be on a diagram on the motor, good luck.
    I am sure you verified It had 240 volts to the motor at the time of testing?
  • Jul 17, 2013, 04:04 PM
    hedwards89
    No I haven't checked the 240 volts, I was under the impression that only 115 was running to it. At what time and where should I check for 240? On the motor itself when it tries to kick on?
  • Jul 18, 2013, 06:58 AM
    Stratmando
    You want to verify voltage as close to the motor as you can, If you can follow the wires back to an easier place to test, that's OK.
    Not testing anything between the motor and your voltage may still be suspect. If you have your voltage to the motor and it doesn't work, the motor IS bad. Verify 240 or 120 volts.
  • Jul 22, 2013, 09:32 AM
    hedwards89
    Is there any instruction you can give me for replacing the motor? Things I should be careful doing, inspecting stuff while I'm replacing, that you guys can give me?
  • Jul 22, 2013, 09:37 AM
    smoothy
    Pictures and notes as to what goes where... and make sure the power is turned off to the breaker... confirm it with a meter. Too many places to ground yourself out which is dangerous with live power.

    This is one of those times where a picture really is worth a thousand words.

    Perhaps Stratmando has something more specific...

    Me personally... I look for rthings like companenet and wires that have been overheated... even if they weren't hot enough to burn out... just pushing that limit over long periods will visually leave indications.
  • Jul 22, 2013, 11:51 AM
    Stratmando
    Sometimes the whole assembly will slide out after removing a couple of screws.
    Be sure power is off as mentioned by smoothy

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