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DAE ever get a weird vibration after swapping out a 5-year-old sheave?
I replaced a worn traction sheave in a 10-story building last Thursday and now there's a high-frequency hum above the 7th floor that wasn't there before, so has anyone else dealt with a harmonic issue after what seemed like a straightforward swap?
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stone.jesse16h ago
That high-frequency hum above the 7th floor is a classic sign of a harmonic. Check the sheave alignment and belt tension first. I've seen new sheaves with a slightly different groove profile set up a whole new vibration pattern.
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jaken2315h ago
Wouldn't that hum start below the 7th floor, @stone.jesse?
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