Home Improvement Asked by mdtx001 on March 25, 2021
I have a Trane XR13 AC Condenser. The motor started running really loud, and then the fan blade came off the shaft. I put the blade back on the shaft twice… making sure to really tighten it the second time it came off. Eventually the motor stopped running, although I can manually spin the blade without issue.
I want to change out the motor, the capacitor and the blade (I am not sure if the blade was damaged when it detached from the shaft, and I don’t know if that will degrade efficiency or cause issues with the motor.)
The original motor has the following specs on the nameplate: HP: 1/5, RPM: 850 (service Facts that came in the manual say 835 RPM), V: 200/230, Cap: 7.5, Hz:60. The blade is 27.6 diameter – 2 blade.
The closest matches I can find online are HP: 1/4 RPM: 825 and HP: 1/5 RPM: 825.
My question is, can I replace the original motor with the 1/4 – 825rpm or the 1/5 – 825rpm without causing any issues, such as loss of efficiency, or problems with the draw on the system?
As @Ed Beal wrote, check the frame number so that the physical size is the same as well as other specs he mentioned. You can buy a motor of the same HP or more but not any less, so a 1/4 HP will work. As far as the fan blade, I would consult Trane for the exact replacement so the unit moves the same amount of condensing air. After market blades may not match the air moving capabilities.
Answered by d.george on March 25, 2021
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