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How to Repair Common Oven Parts The oven is an appliance in the kitchen that is typically used to cook food. The heat of the oven sterilizes food and kills the majority of microorganisms. Every baker needs an accurate oven thermometer. Understanding how your oven works can help you improve your baking and roasting skills, and eliminate those irritated hot spots that wreak havoc with cookies, cakes and other baked items. Thermostat The thermostat is among the most vital components of your oven, assisting to ensure that the temperature of your food matches what you've set on the control panel. As with any electro mechanical switch or sensor, it may have issues that result in the oven going over or under heat, or just not be able to keep the temperature at the level you've set. The oven thermostat is basically a small strip made of two different metals joined. When heated to a certain temperature, the two metals expand or flex at different rates. This creates an electrical circuit. When the thermostat's metal reaches the temperature you've set on your control panel it shuts off the heating element's power. As the oven cools down, the bimetallic strip contracts to re-establish the circuit before activating the heating element. This process is repeated repeatedly to ensure a constant oven temperature. The oven must be disconnected and all screws removed to identify 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 then the thermostat is operating properly and doesn't need to be replaced. If the multimeter doesn't read anything, it's likely that the thermostat is not working properly and requires replacement. 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 cost on the internet or in the kitchen store. Bake Element The bake element is essential for the proper operation of your oven. It generates the heat needed to cook food. It's a small component that turns electricity into the high temperatures required for baking, roasting and broiling. Electric ovens and ranges typically contain heating elements, which can be exposed or hidden beneath the floor. In general oven heating elements are made up of high-resistance metals like nickel-chromium. They work by converting electrical energy into heat via the process of resistance which then radiates through the oven interior to raise the temperature to the desired temperature for cooking different types of foods. When you start your oven, the heating element begins to generate heat from the high-voltage electrical energy that flows across its metallic surface. The element is a ribbon or coil (straight or corrugated) of wire, and as the electric current passes through it, it starts to increase in temperature. The element will appear red hot when it reaches the desired temperature. The baked element is the main source of heat in all oven functions. It is typically located at the in the bottom of the oven. Many ovens with automatic heating also utilize it to clean themselves. If it starts to smoke, you might be noticing that your oven doesn't warm as quickly or your food is not cooked through completely. Plug your multimeter in to its black and red ports. Then, touch the probes made of metal on one side of the device against each other. The other end of the element on one terminal and place your hands on it. If the element feels warm, remove it and test it 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 a grill to brown or char food items. The broil setting of your oven is an excellent choice for quickly searing meat and vegetables, crisping up vegetables, warming lasagna or caramelizing the top of a casserole. The broiler heating element is similar to the bake element in that it converts electrical energy via resistance into heat. It is made up of an inner core made up of metal wires, which are wrapped in an insulating expanded product called perlite. The inner core is then encased in an outer layer of stainless steel to protect the wires from direct contact with the oven. The three-layer design helps reduce the temperature of the broil element, making it safer than the older models. While you can use any heating element in your oven, it is important to choose one that is in line with the rated wattage of your oven. Using a different wattage can damage your oven or cause it to overheat. You can verify 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. Check the resistance of your old element, then compare it to the wattage ratings of the new one. The greater the resistance of an oven element the more power it uses. If the heating element in your broiler is malfunctioning or isn't working in any way, you should replace it right away. Your oven must work correctly to be able to cook your favorite foods. If, however, your oven isn't functioning in any way or only intermittently, the issue may lie with another part of your oven. Light Bulb and Assembly The light allows you to monitor your food while it cooks without opening the door and letting heat escape. The light also lets you know when your casserole is ready. However, it's not uncommon for the light bulb to fail. It can be a hassle, but you can do it yourself. Before you begin, be sure that the breaker hasn't tripped and that the three-prong connector is intact. Remove the old bulb and then find the new one. You may have to search the internet for a replacement bulb that matches the wattage and the type of your oven. Some ovens use standard 40-watt appliance bulbs and others require halogen bulbs up to 50 watts. You should consider using cotton gloves to shield halogen bulbs from the damage caused by oil. Remove the glass casing of the bulb before you replace it. It's important to do this slowly so that you don't fracture it. Then, you'll have to remove the air from the bulb and fill it with gas mixture. oven with hob will provide a longer life for the filament. If your light bulb is constantly blinking it could be an electrical problem that requires an expert to fix it. Make sure you're using the correct oven bulb and look over your Use and Care Guide for more help in troubleshooting. Also, remember that it's an excellent idea to unplug your oven and disconnect it from the outlet prior to you begin any repair. This will prevent you from suffering an electric shock. Vent Tube The vent tube is an essential oven component because it allows a small amount of airflow inside the cavity. This allows the bake element to circulate heat throughout the oven, making sure that the temperature is distributed evenly. It also allows vapors to escape from the oven, and smoke to be drained from the cooking surface. It is essential to ensure the proper operation of any gas or electric oven. Oven vent tubes may become clogged by many factors. Accidental spills and splatters from cooking can leave sticky residues on oven vents, which can attract dust and other debris that could eventually cause clogs or blockages over time. Grease and oil may also become airborne, and build up around vents. Other environmental factors such as kitchen and construction projects can create dust in the vents. This can cause clogs. Based on the model of the oven the vent tube could include a spreader 46, a fill tip 12, and an a bottle guide 20 that are integrated into the pipe 32. For instance, the bottle guide 20 may have a tapered outer surface that is complemented by the tapered inner surface of the spreader 46. This allows the vent tube to be effortlessly inserted into different sizes and forms of bottle necks. A clogged vent tube can cause a reduction in pressure inside the enclosure, which can lead to an exhaust downdraft, which pulls the exhaust forward and down the vent, causing damage to oven's components. Consult a professional if you think your vent pipe might be blocked or clogged. They will determine the cause and offer suggestions on how to clear or clean the vent.