In the use of woodworking sander sensor swing how to solve?

Exist in using wood sanding machine, woodworking sander sensors in sand creation does not swing. Alien sanding machine of the oscillating roller to adjust to and cantilever beam sand roller on a vertical line, adjust the oscillating cylinder according to the actual situation, wide different sanding machine, if not yet you are about to see whether the different sanding machine photoelectric fast pass too close cause penetration, can choose to try in the deformed on one side of the photoelectric switch sanding machine abrasive belt inside daub is the color of water, is to verify through. Pulled one of the oscillating cylinder without gas pipe down, see if there are gas spewing from the oscillating cylinder, this is to check whether the cylinder piston seal leakage.