Relationship between cooler fan vibration and speed
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We have a new unit equipped with an oil-cooled variable-frequency fan; the vibration is low at low speeds, but increases significantly when the speed rises. I was wondering whether the vibration is proportional to the speed? ? ?
Does increasing the speed bring it close to the critical speed?
Vibration will definitely increase as the speed rises, especially when the base is not properly installed or the foundation is uneven.
There shouldn’t be any, 30HZ was mentioned
Does that mean vibration is proportional to rotational speed? ?
As long as there is eccentricity in the rotor mass, vibration increases as the speed rises
1. It may be a quality issue in manufacturing, with vibrations caused by unbalanced forces. 2. It might be resonating at a certain frequency; try increasing the speed to see if the vibration improves