Amcot ST Series - V-Belt Reducers - Belt Tensioning

AMCOT ST SERIES FIBERGLASS COOLING TOWER
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GENERAL MAINTENANCE
Mechanical Systems
V-Belt Reducers – Belt Tensioning
For belt adjustment, remove the outer cover to your reducer. This will reveal the internal components.
The adjustment assembly consists of an adjusting lever, gauge, spring, washer, and bolt. See below
diagram.
Turning the adjusting nut clockwise will compress the adjusting spring and move the adjusting washer
closer to the adjusting gauge. Turning the adjusting nut counter-clockwise will loosen the assembly.
Proper belt tension is when the adjusting washer and end of the adjusting gauge
are aligned with one another.
If there is a gap between the adjust washer location and the end of the adjusting gauge, this means that
there is too much slack.
If the adjusting washer and end of the adjusting gauge overlap, then the belts are too tight.
The adjusting gauge itself is set by the factory and should never be altered or changed in anyway other
than when replacing the entire adjustment assembly.
For seasonal shutdowns, it is recommended that you turn the adjusting nut ¼ to ½ turn
counterclockwise to slightly loosen the pressure being applied to the belts to prevent them from
continuing to stretch during this extended shutdown period.