Use two hands to operate sanders - one on a trigger switch and the other on a front handle knob. Keep all cords clear of sanding area during use. Clean dust from a motor and vents at regular intervals. Do not use a sander without an exhaust system or a dust collector present that is in good working order. The dust created when sanding can be a fire and explosion hazard.
Proper ventilation is essential.
Do not exert excessive pressure on a moving sander. The weight of the sander supplies adequate pressure for the job. Do not work on unsecured stock unless it is heavy enough to stay in place. Do not overreach. Always keep proper footing and balance.