So I installed a 30in by 30in Dayton Upblast exhaust fan on a roof. The last exhaust fan's bearings failed and the shroud was torn up from the blower blades. I used the Single Phase Motor that was in the original in the new unit. I got the proper pulley, set up the V belt, and wired for low voltage at 120VAC. I tested the motor in the shop and it ran no load without any problems. When it was installed however it ran for 5 seconds shut off for 20 secs and continued in that loop. The motor began to get hot after running through that loop three times. I plan on opening up the motor and checking continuity throughout, but I was wondering if anybody is experienced this before.
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