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How to Repair Common Oven Parts The oven is an appliance in the kitchen that is used to cook food. The heat generated by the oven sterilizes food items and kills the majority of micro-organisms present in them. Every baker needs an accurate oven thermometer. Knowing how your oven functions will help improve your baking and roasting skills and eliminate those irritated hot spots that can cause havoc with cookies, cakes and other baked items. Thermostat The thermostat is a crucial part of your oven. It assists in ensuring that the temperature of food matches the temperature you have set on the control panel. It can be problematic as with any other sensor or switch that is electro-mechanical. The oven could overheat or underheat, or not maintain the temperature you have set. The oven thermostat is an extremely small strip of two different metals connected. When exposed to heat, the different metals expand and bend at different rates, creating or breaking an electrical circuit. When the metal in the thermostat is at the temperature you've set on your control panel, it shuts off the heating element's power. As the oven cools it expands the bimetallic strip to re-establish the circuit before activating the heating element. This process continues to maintain a constant temperature in your oven. It is necessary to disconnect the oven and all screws removed in order to determine the problem with the thermostat. Set your multimeter to the Ohms setting and then test the thermostat. If the multimeter reads zero or close to it then the thermostat is operating properly and doesn't require to be replaced. If the multimeter does not show anything then the thermostat is not working properly. 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 are available online or at the kitchen store, and are available at a reasonable price. Bake Element Ovens aren't complete without the bake element which is the element that heats up to help your oven cook food. It's a simple component that converts electricity into high temperatures for baking, roasting, and broiling. Electric ovens and ranges often contain heating elements, which can be exposed or hidden beneath the floor. Generally, oven heating elements are constructed of high-resistance materials such as nickel-chromium alloy. They work by converting electricity into heat through resistance. The heat then radiates through the oven's interior to achieve the temperature required to cook different kinds of food. When you start the oven the heating elements begin to produce heat due to the high-voltage electric current flowing across the metal's surface. The element is a ribbon or coil (straight or corrugated) of wire, and as the electric current flows through it, it begins to increase in temperature. When the element reaches its temperature it starts to shine red hot. The baked element is the primary source of heat for most oven functions. It's usually located in the bottom of the oven and is used for the self-cleaning feature in many automatic oven models. You might notice that the oven does not get hot as fast or that your food hasn't been fully cooked. Plug your multimeter in to its red and black ports. Then, you can press the metal probes on one side of the device against each other. The other end of the element on one terminal and place your hand on it. If the element feels warm, remove it and start testing again. If it's not, remove the element and start testing again. Broil Element The broil element is typically situated in the upper part of the oven and can provide the same high temperature as grills to roast or grill food items. The broil setting of your oven is an excellent choice for quickly searing meat, crisping vegetables, reheating lasagna, or making caramel on top of a casserole. Similar to the bake element the broiler heating element transforms electrical energy into heat via the process of resistance. It is comprised of an inner core consisting of metal wires, which are wrapped in an insulating and expanded product called perlite. The inner core is encased in an outer layer of stainless steel to protect the wires from direct contact with the oven. The three-layer design can help reduce the temperature of the broil element, making it more secure than older styles. While you are able to use any baking or broiling heating element in your oven, it is important to choose one that matches the wattage that is recommended for your oven. A different wattage can harm your oven, or cause it to overheat. The voltage and current ratings of the latest heating elements can be found on the control panel of your oven. oven hob allows you to determine the ratings and wattage of your oven. Check the resistance of the previous element, and compare it to the wattage rating of the new element. The higher the resistance of an oven element, the more power it uses. If your broiler heating element is acting up or doesn't work in any way, you should replace it right away. Your oven must function properly to be able to cook your favourite meals. If your oven does not work at all, or only intermittently, then the issue could be a problem with a different component. Light Bulb and Assembly The oven light helps you keep an eye on your food while it cooks without opening the door and let the heat escape. The light will also notify you when the casserole is finished. However, it's not uncommon for the light to go out. It can be a hassle however, it's an easy repair that you can do yourself. Make sure the breaker is not tripped and that the connector has three prongs. Remove the old bulb, and then look for the new bulb. You may have to look online for a replacement that matches the wattage and the type of oven you have. Some use standard 40-watt appliance bulbs some require a halogen bulb that is up to 50 watts. Consider using cotton gloves to shield bulbs from the damage caused by oil. Before you place the new bulb in place, you should first take it out of its glass casing. Do this slowly to avoid breaking it. Then, you'll need to remove the air from the bulb and replace it with an appropriate mixture. This will ensure a longer lifespan for the filament. If your bulb keeps blinking it could be an electrical issue that needs a professional to fix. Be sure to double check that you're using the right bulb for your oven and look over your Use and Care Guide for additional troubleshooting suggestions. Be sure to unplug your oven and shut off the power before you start any repairs. This will protect your from electrical shock. Vent Tube The vent tube is an essential oven part as it allows a small amount of airflow within the cavity. This permits the bake element to circulate heat throughout the oven, ensuring that the temperature is evenly distributed. It also allows vapors to escape from the oven and smoke to be drained from the cooking surface. It is crucial for the proper operation of any electric or gas oven. Vents in ovens can get blocked by many factors. Accidental spills or splatters could leave sticky residues on oven vents. They can attract dust, debris and other contaminants that could cause blockages in the course of time. Grease and oil may also be airborne and then settle on vents. Other environmental factors, such as kitchen renovations and construction work, can introduce dust and other contaminants into the vents, leading to obstructions or clogs. Based on the model of the oven, the vent tube can include a spreader 46 and an fill tip 12 and an a bottle guide 20 that are incorporated into the pipe 32. best oven may be fitted with a tapered outer edge that is complemented by the tapered inner edge of the spreader to allow the vent tubes to be placed easily into different sizes and shapes of bottle necks. A blocked vent tube may cause a decrease in pressure within the enclosure, which can cause an exhaust downdraft, which pulls the exhaust backwards and down the vent, damaging the oven components. Consult a professional if suspect that your vent tube might be blocked or clogged. They will diagnose the issue and provide suggestions on how to remove or clean the vent.