Close-up of a stainless steel industrial ventilation fan

Dynamic balancing of AHU fan

Rotor mass imbalance is a common cause of excessive vibration in rotating equipment and fans, and the benefits of rotor balancing are undisputed. Decreasing the level of noise and vibration in the machine, it can extend bearing life and increase equipment availability. This case study is an example of the successful balancing of an air handling unit (AHU) fan in the Shangri-La Hotel in Singapore.

The dual-plane balancing procedure was carried out with the handheld Leonova Diamond instrument. Initial measurements on the motor and fan showed that the vibration levels were related to the rotational frequency (1X), and an out-of-balance condition on the fan was thus determined.

After completing two-plane balancing, follow-up measurements showed a significant drop in the amplitude at 1X to within accepted ISO levels. As a consequence, the vibration amplitude on the motor also dropped.

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Case Study
Filename/description Language Size Modified
CS_037B_Fan balancing_Shangri-La_SG.pdf English (United Kingdom) 3 MB 4/19/2023
This case study is an example of the successful balancing of an air handling unit (AHU) fan at the Shangri-La Hotel in Singapore.

HD Technologies

High-definition condition monitoring technologies provide exceptional pre-warning times, maximizing the planning horizon for maintenance and repairs. In turn, this enables fully utilizing asset life, cutting repair costs, and minimizing the consequences of unplanned downtime.

Leonova Diamond

Leonova Diamond® is an advanced and powerful data analyzer for high-efficiency measuring routes in rough industrial surroundings.

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