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DE | Have 36" three blade direct drive fan in wooden box frame powered by Dayton 1/2 hp 850 rpm teao fan motor that sits right outside of cow stable door on ground where we milk for years with no problems. Rain and wind storm came up and blew fan over backwards, no visible damage. Fan would only run up to about 1/3 normal speed and over heat. Took access plate off, no burning smell or burnt wires. Changed start capacitor, no difference. Went and got new identical Dayton motor. Would run for about 20 minutes, over heat and stop. Took it back and got another motor, it ran about 50 minutes and over heated and stopped. The fan blade hub is pretty darn stout, don't see how anything can be bent simply falling over backwards, fan runs without any noticeable vibration. What gives? any ideas? I've read on here on where today's motors just don't have the power rating like older ones. It's wired for 220. Went and got cousins 48" two blade fan that he no longer uses, 1 hp 220v direct drive fan plugged in same receptacle and works fine. I've looked quickly for 3/4 hp motor but can't find a 850 rpm or one that has same frame size that will bolt up to the two angle iron that supports motor.
should add, the two replacement motors would get up to rated speed but you could tell they were struggling a bit to hold the rpm.
Edited by cowhater 7/23/2011 13:59
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anybody else having problems with Dayton electric fan motors?
