How do I determine what height to set the vacuum pick-up nozzle?
The height of the vacuum pick-up nozzle is normally set between 1/8″ and 1/4″. The intent is to remove the abraded material. If the nozzle is set too close, you run the risk of lifting flexible test specimen and preventing sufficient cooling of the vacuum motor. If the nozzle is set too high, the suction may not be great enough to remove the abradant material.
