When a belt is running but not conveying material, there is no reason for the belt cleaning system to be activated.

By applying a cleaner blade to an un-loaded belt, particularly a fast belt, unnecessary mechanical and thermal wear occurs to both the belt and the cleaner.

However, the Dirtwhacker No-Load Device is able to detect no load conditions using an ultrasonic sensor, and remove pressure from the bladder for the duration the belt runs dry. Operation is completely hands-off.