Using your Westinghouse cooktop control knob is easy. Simply turn it to adjust the heat settings on your cooktop. When using it, make sure to turn it gently to avoid any damage. If you notice any unusual resistance while turning, stop and check for any obstructions. As for maintenance, keep the knob clean by wiping it with a soft, damp cloth regularly. Avoid using abrasive cleaners as they can scratch the surface. If you're not sure whether this knob fits your cooktop, don't hesitate to contact us with your model and PNC numbers before making a purchase. This way, we can double - check with the manufacturer to ensure a perfect fit.