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How to Repair Common Oven Parts Oven is a common kitchen appliance used to cook food. The heat from the oven sterilizes food and kills the majority of microorganisms. A reliable oven thermometer is a necessity for bakers of all kinds. Understanding how your oven functions can help you improve your baking cooking, roasting and cooking skills. It will also help eliminate those annoying hot spots which can ruin cakes, cookies and baked goods. Thermostat The thermostat is an essential part of your oven. It is used to ensure that the temperature of food is in line with the temperature you set on the control panel. However, just like any other electronic mechanical switch or sensor, it can have issues that cause the oven to over heat or under heat, or just not be able to keep the temperature you've set. The oven thermostat is tiny strips of two different metals that are bonded. When exposed to heat the various metals expand and contract at different rates, creating or breaking an electrical circuit. When the thermostat's metal attains the temperature you've set on your control panel it shuts off the power to the heating element. As the oven cools it expands the bimetallic strip in a circuit, re-establishing it and activating the heating element. This cycle is repeated continuously to ensure that the oven remains at a constant temperature. The oven must be disconnected and all screws removed in order to determine a thermostat problem. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads 0 or very close to it the thermostat is working correctly and doesn't require to be replaced. If the multimeter does not read anything it means that the thermostat is defective. It is time to get it replaced. Cooker Spare Parts suggests that you replace your thermostat with a similar type as the previous one. They can be purchased through the internet or at the kitchen store, and are available at a reasonable cost. Bake Element The bake element is essential to the functioning of your oven. It provides heat that allows it to cook food. It's a simple element that converts electricity into high temperatures for baking, roasting and broiling. Electric ovens and ranges usually include heating elements that can be exposed or hidden under the floor. The majority of oven heating elements are constructed of high-resistance materials such as nickel-chromium alloy. They convert electricity into heat via resistance. This heat is then radiated through the interior of the oven to attain the temperature required for cooking different types foods. When you switch on the oven the heating elements start to generate heat by the high-voltage current that flows across the metal surface. The element is a coil or ribbon (straight or corrugated) of wire, and when the electric current flows through it, it starts to heat up. When the element reaches its desired temperature it begins to shine red hot. The baked element is the primary source of heat for most oven functions. It's usually found in the bottom of the oven, and is used for the self-cleaning feature in many ovens with automatic cleaning. You might be noticing that the oven doesn't get hot as fast, or that your food isn't fully cooked. Connect your multimeter to its red and black ports. Then, touch the probes made of steel on one side of the element to each other. The other end of the baking element against one terminal and place your hand on it. If the element feels warm, take it off it and start testing again. If not, remove it and try again. Broil Element The broil element is usually situated in the top of your oven's cavity and produces high-temperature heat similar to grills to roast or grill food. The broil setting in your oven is a great option for quickly searing meat or vegetables, crisping them up, reheating lasagna or caramelizing the top of a casserole. Similar to the bake element, the broiler heating element converts electrical energy into heat via the process of resistance. It is composed of an inner core consisting of metal wires, which are wrapped in an insulating, expanded material known as perlite. The core of the element is covered with an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer design helps lower the temperature of the broil element, making it safer than older styles. You can use any heating element for baking or broiling in your oven. However, it is important to choose one that is compatible with the wattage that your oven is rated for. A different wattage may harm your oven, or cause it overheat. You can check the power of your oven as well as the rating of the new heating element by examining their current and voltage ratings on the control panel of your oven. Examine the resistance of the old element, then compare it to the wattage ratings of the new one. The higher the resistance, the greater energy an oven element consumes. Replace the element in your broiler immediately If it's not working or is acting up. It is crucial that your oven function correctly to be able to cook all your favorite foods. If your oven doesn't function at all, or only intermittently then the problem may be with another part. Light Bulb and Assembly The light lets you keep an eye on your food while it cooks without opening the doors and let the heat escape. The light will also notify you when the casserole has been cooked. It's not uncommon for the light bulb to fail. It can be quite frustrating, but you can do it yourself. Check that the breaker isn't tripped and that the connector has three prongs. First, take out the old light bulb and locate the new one. It is possible to look online to find a replacement that is compatible with the wattage and model of oven you have. Some ovens use normal appliance bulbs of 40 watts some require an halogen lamp that can reach 50 watts. You should consider using cotton gloves to protect the bulbs from the damage caused by oil. Before putting the new bulb into place it is important to first remove it from its glass casing. It is important to do this slowly so that you don't break it. After that, you'll need to evacuate the air inside the bulb and fill it with an amalgamation of gases. This will provide a longer life for the filament. If your light bulb is always going out, there could be a bigger electrical problem that needs to be handled by a professional. Make sure you're using the correct oven bulb and check your Use and Care Guide for more troubleshooting advice. Also, remember that it's an excellent idea to unplug your oven and disconnect it from the outlet prior to you start any repair. This will prevent you from suffering an electric shock. Vent Tube The vent tube is a vital oven component that permits an airflow within the cavity. This allows the bake element to circulate heat around the oven , ensuring that the temperature is evenly dispersed. It also allows the vapors that are released from the oven to escape and allows smoke to be removed from the cooking surface. It is vital for the proper functioning of any electric or gas oven. Vents for ovens can become blocked by many factors. Accidental spills and splatters from cooking can leave sticky residues on the oven vents, which attract dust and other particles which can lead to clogs or blockages over time. Grease and oil particles can become airborne and settle around the vents, as well. Other environmental factors, such as kitchen construction and renovations, could introduce dust or other pollutants into the vents, leading to obstructions or clogs. Depending on the oven model the vent tube may comprise an a bottle guide 20 and spreader 46, as well as fill tip 12 that are constructed with the pipe 32. For instance, the bottle guide 20 could have a tapered exterior surface that is complemented by the tapered inside of the spreader 46, allowing the vent tube to be smoothly inserted into different sizes and shapes of bottle necks. A clogged or blocked vent tube could cause an increase in pressure within the enclosing structure. This can result in a downdraft that pushes exhaust down the vent and backwards towards the oven's burners, causing damage to oven components. Consult a professional if you think your vent pipe may be clogged or blocked. They will determine the cause and make recommendations on how to clean or clean the vent.