An air compressor takes in air at atmospheric pressure and delivers it at a higher pressure. This compressed air is used to power small tools and fill vehicle tires. Portable air compressors are easy to move from one place to another, and using air-compressor tools with quick-connecting mechanisms makes changing from one tool to another a snap. Although air compressors are pretty straightforward to operate, you must follow certain procedures to prevent serious injury.
Locate the portable air compressor near an electrical outlet and at least 12 inches away from the wall or other obstruction. Plug it in.
Place the On/Auto/Off lever in the "Off" position. Turn the regulator counterclockwise all the way.
Attach your hose and accessories to the air compressor. Turn the On/Auto/Off lever to the "On" position. Allow the air compressor to run until the tank is fully pressurized; it will automatically shut off.
Grasp the regulator knob and turn it clockwise until it reaches your desired pressure. The air compressor will cycle on and off as you use your air tools to maintain the discharge air pressure that you set with the regulator.
Turn the On/Auto/Off lever to the "Off" position once you're finished using your air tools. Open the drain valve on the bottom of the tank. Allow it to drain fully.
Disconnect your air hoses and accessories. Unplug and store your air compressor for future use.