How do I refill the rinse aid dispenser, and how often does it need to be refilled?

The rinse aid dispenser holds 5 oz (150 mL) of liquid rinse aid, which typically lasts 1 to 3 months under normal conditions. To refill, turn the dispenser knob to 'Open,' lift it out, pour rinse aid until the indicator points to 'Full,' then replace the knob and turn it to the 'Lock' position. Clean up any spilled rinse aid with a damp cloth and do not use solid or bar-type rinse aid. (Page 14)