Those seeking a fuel-efficient alternative to a standard oven often turn to convection ovens. Faster and more economical than its conventional counterpart, the convection oven uses fans to push hot air through its cooking area. This allows the food to be cooked evenly and at a lower temperature, while reducing cooking times by an average of 30 percent. Not only does this save on electricity, but the consistent cooking temperatures of a convection oven make the successful preparation of delicate dishes, such as soufflés, less difficult. Convection ovens require regular cleaning to achieve peak performance.
Cut three or four lemons into wedges and place the wedges into an ovenproof bowl. Add just enough water to cover the fruit. Place the bowl into the convection oven and set the temperature to 350 degrees Fahrenheit. Close the door and allow the oven to warm up for 30 minutes, then turn off the heat. Leave the bowl inside the oven and wait for the oven to cool down. The acid in the lemon juice helps loosen any baked spills and eases the removal of greasy residue.
Open the oven door and verify that the interior is cool enough to safely touch it prior to cleaning. Remove the bowl and discard the lemons. Pull out the racks and set them aside. Wipe down the interior with a damp cloth or sponge, cleaning away the grease and softened food deposits.
Pour 1/4 cup of baking soda into a small bowl and add enough water to make a thick paste. Apply the paste to any areas where baked-on food or debris remains. Allow the baking soda to sit for 30 minutes and then scrub gently with an old toothbrush. Rinse any residue from the interior of the oven by wiping it away with a clean, damp cloth.
Wash the racks in hot, soapy water. Scrub any stubborn food spills with a scouring pad. Allow the racks to air dry and then return them to the oven.