In order to ensure proper function, how should belts be adjusted?

Belts should be adjusted with just enough tension to ensure proper function because this allows for optimal performance while minimizing wear and strain on the equipment. Adequate tension helps maintain effective power transmission and prevents slipping, which can lead to inefficiency and potential damage to both the belt and the drive components.

If the belt is too loose, it may not effectively transfer power, leading to reduced performance. However, excessive tension can cause increased friction, higher wear rates, and potential failure of both the belt and the bearings or pulleys involved. Therefore, achieving the correct balance with just enough tension is crucial for longevity and effective operation of the machinery.

Adjusting belts only under load would not provide an accurate assessment of the necessary tension since the load conditions may vary and could lead to incorrect adjustments.