Correct condenser fan motor??

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  • georgen
    New Member
    • Sep 2006
    • 5

    #1

    Correct condenser fan motor??

    Circa 1974 Bryant 5 ton condenser fan motor bearings went out. No info on motor housing. Install sheet stated full load amps were 2.3. Grainger replaced with 1/3 hp 1075 rpm 2.5 FLA motor which seems ok but I think not as much air is blowing over coils. Is hp and fan speed right? The replacement fan on my 3 ton Bryant is 1/3 hp also. Can my digital laser thermmeter reading heat off the 2 sets of coils help me? Thanks
  • HayZee518
    Deity
    • Jul 2004
    • 8747

    #2
    central a/c or unit a/c?

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    • georgen
      New Member
      • Sep 2006
      • 5

      #3
      Central AC. to HayZee, Thanks for info. Here is more info on my unit. Motor is lug mount, 1/2 in shaft. My specific question is regardding rpms and HP. The unit has worked ok fsor a week since the installation of new motor, I just think air flow over coil is perhaps less than with ood motor. Shold I be checking air over coil exit temp and compare to my 3 ton Bryant unit which is beside the 5 ton unit.???
      Last edited by georgen; 09-20-2006, 12:04 PM. Reason: more info

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      • HayZee518
        Deity
        • Jul 2004
        • 8747

        #4
        I would say to look into grainger or baldor electric for a motor with more rpm-s given your shaft diameter and amperage.
        I'll look but I don't think I can find a motor specifically for a Bryant a/c condenser fan. It'll probably be a "C-Frame vertical mount"

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        • HayZee518
          Deity
          • Jul 2004
          • 8747

          #5
          check out www.shortyshvac.com, second page under "motors and Capacitors"

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