Safety Points The VX520 terminal has a plug with a grounding pin. Plug only into a receptacle equipped with a ground connection terminal. Do not use a ground adapter plug. Make sure the power cord is away from walkways and nothing is resting on it. Clean the terminal with a soft, dry cloth. Do not use aerosol cleaners on the terminal. Do not use the terminal in wet conditions or near water. Keep it away from coffee pots. Take precaution to avoid spilling anything on the terminal. Do not remove the cover or open the terminal in any way. Opening the terminal voids the warranty. Do not stick or poke foreign objects like pencils, wires, or paper clips into the magnetic strip swiping slot on the terminal or into any of the ports on the terminal.