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How to Repair Common Oven Parts Oven is a common kitchen appliance used to cook food. The heat produced by the oven sterilizes food items and kills most of the micro-organisms present in them. An accurate oven thermometer is essential for all bakers. Knowing how your oven functions can help you improve your baking and roasting skills and eliminate those irritated hot spots that can cause havoc with cakes, cookies and other baked products. Thermostat The thermostat is one of the most crucial components of your oven, helping to make sure that the temperature of your food is in line with what you've set on your control panel. hob can be problematic, just like any other switch or sensor that is electro-mechanical. The oven can overheat or underheat, or simply not keep the temperature you set. The oven thermostat is a small strip of two different metals bonded together. When heated by the oven, the metals expand or bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature you set on your control panel, it will shut off the power to the heater. When the oven cools down, the bimetallic strip contracts to re-establish the circuit before turning on the heating element. This process continues to ensure a constant temperature within your oven. To identify a issue with the thermostat, you'll need to disconnect the oven and make sure that all screws holding it in place have been removed. If you own a multimeter (which is a device that analyzes electrical current) set it to the ohms setting, and then test the thermostat. If the multimeter shows zero or close to zero it means that the thermostat is working correctly and doesn't require to be replaced. If the multimeter fails to show anything, the thermostat is faulty. It is time to get it replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the previous one. These thermostats are available at a reasonable price online or at the kitchen store. Bake Element Ovens are not complete without the bake element which provides heat to make your oven cook food. It's a basic element that converts electricity into the high temperatures required for baking, roasting and broiling. Heating elements are usually found in electric ovens and ranges and can be covered or hidden beneath the oven's floor. The majority of oven heating elements are made from high-resistance components like nickel-chromium alloy. They work by converting electrical energy into heat by the process of resistance, which then radiates throughout the oven interior to raise the temperature to the desired temperature for cooking different types of food. When you switch on the oven, the heating elements begin to generate heat by the high-voltage current that flows across the metal's surface. When electric current flows through it the element is heated. When the element reaches its temperature it starts to glow red hot. The baked element is the primary source of heat used in most oven functions. It's usually found in the bottom of the oven, and is used to clean the oven in many automatic oven models. You might be noticing that your oven doesn't warm up as quickly, or that your food hasn't fully cooked. Plug your multimeter in to its red and black ports. Then, touch the probes made of steel on one side of the element against each other. Place the other end against one of its terminals, and put your hand on it to determine whether the element is warm to the contact. If not, remove it and try again. Broil Element The broil element is typically located in the top of your oven and can provide the same high temperature as grills to cook or brown food items. The broil setting of your oven is an excellent option for quickly searing meat, crisping vegetables, reheating lasagna, or making caramel on top of a casserole. The broiler heating element has a similarity to the bake element in that it converts electrical energy through resistance into heat. It consists of an inner core of wires made of metal wrapped in insulating perlite material. The inner core is then enclosed in an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer structure reduces the broil element's temperature, making it more durable and safer than older types of elements. You can use any heating element for baking or broiling in your oven. But, you must choose one that is compatible with the wattage of your oven's rating. Using a different wattage can cause damage to your oven or cause it to overheat. You can verify the wattage of your oven and the rating of the new heating element by looking at their current and voltage ratings on the control panel of your oven. You should also test the resistance of your previous element and compare it with the power of the new broiler heating element. The higher the resistance, the greater power an oven element uses. Replace your broiler element immediately if it is not functioning or if it's acting up. Your oven must function correctly to be able to cook your favorite foods. If your oven isn't functioning at all, or is only working intermittently, the issue may be in a different area of your oven. Light Bulb and Assembly The oven light helps keep an eye on the food cooking without having to open the door to let heat escape. The light will also notify you when the casserole is done. It's not uncommon for the light bulb to fail. It can be a hassle, but you can fix it yourself. Check that the breaker is not tripped and that the connector has three prongs. Remove the old bulb, and then locate the new one. You may need to look online to find the correct replacement bulb that is compatible with your oven's wattage. Some ovens use standard appliance bulbs that run at 40 watts, while others need lamps that are halogen up to 50 watts. Be aware that the oil in your hands can damage a halogen bulb, so you should use cotton gloves when handling it. Remove the glass casing from the bulb before replacing it. Do this slowly so that you don't break it. Then, you'll need to remove the air from the bulb and fill it with an amalgamation of gases. This will extend the lifespan of the filament. If your bulb keeps being replaced, it could be a bigger electrical problem that needs to be handled by a professional. Be sure to double check that you're using the correct bulb for your oven, and consult your Use and Care Guide for additional troubleshooting suggestions. Remember that it's an excellent idea to unplug your oven and disconnect it from the outlet before you begin any repair. This will prevent you from suffering an electric shock. Vent Tube The vent tube is a vital oven component that allows for a small airflow inside the cavity. This allows the bake element to circulate heat throughout the oven, ensuring that the temperature is evenly distributed. It also allows the vapors to escape from the oven, and smoke to be drawn from the cooking surface. It is essential for the proper operation of any gas or electric oven. Vents for ovens can become clogged by various reasons. Accidental spills or splatters while cooking can leave sticky residues on oven vents, which can attract dust and other particles that can eventually cause blockages or clogs over time. Grease and oil may also become airborne, and build up around vents. Other environmental factors, like kitchen renovations and construction work could introduce dust or other contaminants into the vents, which can cause clogs or blockages. Based on the model of the oven the vent tube could include a spreader, the fill tip 12, and the bottle guide 20 which are integrally formed into the pipe 32. The bottle guide 20 can be fitted with a tapered outer edge that is complemented by the tapered inner edge of the spreader, allowing the vent tubes to be placed smoothly into different sizes and shapes of bottle necks. A blocked vent tube could cause a loss in pressure inside the enclosure, which can lead to a downdraft that pulls exhaust forward and down the vent, causing damage to oven's components. Consult a professional if suspect that your vent tube may be clogged or blocked. They will determine the cause and offer suggestions on how to remove or clean the vent.