When the system flips over, replace the SmartChlor® Cartridge by twisting to the two cartridges until the arrows align and pull apart. Drain the water from the old SmartChlor® Cartridge and shake slightly to see if it is empty. Discard in trash or offer for recycyling if available. Replace with a new SmartChlor® Cartridge.
Note: Do not discard or recycle cartridge if a small amount of chlorine remains. Place in hot tub to float on its own until completely empty.