Hair and other fibers can easily work their way under the caps at the end of the revolving brush, straining the brush bearings and burning up the belt. Belts stretch with use, and a stretched belt slips on the revolving brush - not only reducing cleaning ability, but also wasting energy. For instruction, refer to your owner's manual. Know your vacuum's limits. Most vacuums are not built to pick up larger objects such as coins, crayons and bobby pins.
Large debris can damage the motor fan and the brush roll bearings.
Once a month, check the vacuum's airflow and suction, while the unit is on, to make sure that the hoses are not clogged. To do this, place your hand or another object over the opening of the stretch hose. They are known to clog the bag and create an unwanted lining on the inside of the vacuum, which can potentially damage the motor. If you are interested in a perfume scent, talk with a vacuum specialist about special bag tablets. Motors are equipped with bearings, which contain sufficient lubrication for the life of the motor.