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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 items. The heat generated by the oven sterilizes food items and kills the majority of microorganisms. All bakers require an accurate oven thermometer. Knowing how your oven functions will help improve your baking and roasting skills, and eliminate those annoying hot spots that wreak havoc with cookies, cakes and other baked goods. Thermostat The thermostat is an essential component of your oven. It is used to ensure that the temperature of food corresponds to the temperature you set on the control panel. It could be a problem as is any other switch or sensor that is electro-mechanical. The oven can overheat or underheat, or simply not maintain the temperature you have set. The oven thermostat is essentially tiny strips of two different metals that are bonded. When heated by the oven, the metals expand and bend at different rates. This creates an electrical circuit. When the thermostat's metal attains the temperature you've set on your control panel it turns off the heating element's power. As the oven cools, the bimetallic strips contract, re-establishing circuit and turning on heating element. This cycle continues for a long time to ensure a constant oven temperature. To diagnose a problem with the thermostat, you'll need to disconnect the oven and make sure that all of the screws holding it in place have been removed. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads zero or very close to it then 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 recommends that you replace the thermostat with a brand new one of the same type that your old one. They can be purchased through the internet or at the kitchen store, and are available at a reasonable price. Bake Element Ovens are not complete without the bake element which creates heat to make your oven cook food. It's a simple component that transforms electricity into high temperatures for baking, roasting, and broiling. Electric ovens and ranges typically include heating elements that can be exposed or hidden under the floor. In general, oven heating elements consist of high-resistance elements such as nickel-chromium. They convert electricity into heat via resistance. The heat then radiates through the interior of the oven to attain the temperature required for cooking different types foods. When you turn on the oven the heating elements start to produce heat due to the high-voltage current flowing across the metal's surface. The element is a ribbon or coil (straight or corrugated) of wire, and when the electric current passes through it, it starts to heat up. When the element reaches its temperature it starts to glow red hot. The baked element is the main source of heat in all oven functions. It's typically located in the bottom of the oven and is also used to perform the self-cleaning function in many automatic oven models. You might be noticing that your oven doesn't get hot as fast or that your food hasn't been cooked completely. Plug your multimeter in to its red and black ports. Then, press the metal probes on one side of the element against each other. Place the other end of the element on one terminal and then place your hand on it. If the element feels warm, remove it and test it again. If not, take it off and try again. Broil Element The broil element, which is typically located at the top of your cavity allows high-temperature heat to cook or char the food. The oven's broil setting can be a great way to quickly sear meat crisp vegetables, heat lasagna, or caramelize the topping of the casserole. The broiler heating element is comparable to the bake element in that it converts electrical energy via resistance into heat. It is made up of an internal core of metal wires wrapped in an insulating expanded perlite material. The inner core is then wrapped in an outer layer of stainless steel, which protects the wires from direct contact with the oven. The three-layer structure helps reduce the temperature of the broil element, making it more durable and safer than older styles of elements. You can use any heating element to bake or broiling in your oven. However, it is important to choose one that is compatible with the wattage that your oven is rated for. Utilizing a different wattage may damage your oven or cause it to overheat. You can determine the wattage of your oven and the rating of the new heating element by examining their voltage and current ratings on the oven's control panel. Check the resistance of your old element, then compare it to the wattage rating of the new element. The greater the resistance, the more energy an oven element consumes. If the heating element in your broiler is malfunctioning or isn't working at all, you should replace it as soon as possible. It is essential that your oven function properly to cook all of your favorite food items. If your oven does not operate in any way, or just intermittently, the issue may be a problem with a different component. Light Bulb and Assembly The oven light helps you keep an eye on the food cooking without opening the door to let heat escape. The light will also notify you when the casserole is finished. But it's not uncommon for the light to go out. It can be a hassle, but you can fix it yourself. Before you begin, be sure that the breaker isn't tripped and that the three-prong connector is intact. First, take out the light bulb that was in use and then locate the new one. You may need to look online for a replacement that is compatible with the wattage and model of your oven. Some use standard 40-watt appliance bulbs, while others require a halogen bulb up to 50 watts. Be aware that the oil in your hands can cause damage to the halogen bulb, so you should use cotton gloves when handling it. Remove the glass casing from the bulb before replacing it. It's important to take this step slowly to ensure that you don't break it. Then, you'll need to eliminate the air inside the bulb and fill it with a mixture of gases. This will ensure a longer lifespan for the filament. If your bulb keeps going out it could be an electrical issue that needs the assistance of a professional. Be sure to double check that you're using a correct bulb for your oven and consult your Use and Care Guide for additional troubleshooting suggestions. Make sure to unplug the oven and shut off the power before beginning any repairs. This will help prevent suffering an electric shock. Vent Tube The vent tube is an important oven component that allows for a tiny airflow inside the cavity. This allows the bake element to circulate heat throughout the oven and ensures the temperature is evenly dispersed. It also allows the vapors to be released from the oven, and smoke to be drawn from the cooking surface. It is crucial for the proper operation of any gas or electric oven. Vents for ovens can become clogged or blocked by several reasons. Accidental spills or splatters can leave sticky remnants in oven vents. These can attract debris, dust and other contaminants that could cause clogs in the course of time. Grease and oil can also be airborne and then settle on vents. Best place to buy oven and hob , like kitchen renovations and construction work, can introduce dust or other pollutants into the vents, resulting in blockages or clogs. Depending on the oven model the vent tube may include a bottle guide 20 and spreader 46, as well as fill tip 12 that are integrally formed by the pipe 32. The bottle guide 20 may have a tapered edge that matches the tapered inside edge of the spreader, allowing the vent tubes to be inserted smoothly into different sizes and shapes of bottle necks. A blocked vent tube could cause a loss in pressure inside the enclosure, which could cause an exhaust downdraft, which pulls the exhaust backwards and down the vent, causing damage to the oven's components. Contact a professional if you think your vent pipe may be clogged or blocked. They will identify the problem and make recommendations on how to remove or clean the vent.
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