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How to Repair Common Oven Parts The oven is an appliance used in kitchens that is typically used to cook food items. The heat from the oven sterilizes food items and kills the majority of microorganisms. Every baker needs an accurate oven thermometer. Understanding how your oven functions will help improve your baking cooking, roasting and cooking skills. It will also help eliminate the annoying hot spots that can ruin cakes, cookies and baked items. Thermostat The thermostat is an essential component of your oven. It helps to ensure that the temperature of food matches the temperature you have set on the control panel. However, just like any other electronic mechanical switch or sensor it can have issues that result in the oven going over heat or under heat, or not be able to maintain the temperature you've set. The oven thermostat is basically a small strip made of two different metals that are connected. When heated, the different metals expand and bend at different rates, forming or breaking an electrical circuit. When the thermostat's metal is at the temperature you've set on your control panel, it shuts off the power to the heating element. As the oven cools the bimetallic strips expand in a circuit, re-establishing it and turning on heating element. This process is repeated over and over to ensure that the temperature remains constant in your oven. To identify a problem with the thermostat, you'll need to disconnect the oven and verify that all screws that hold it in place have been removed. If you own a multimeter (which is a tool that measures the electrical current), set it to the ohms level and then test the thermostat. If the multimeter displays zero or close to zero, the thermostat is functioning correctly and doesn't require to be replaced. If the multimeter doesn't show anything then the thermostat is not working properly. It must be replaced. Cooker Spare Parts recommends that you replace the thermostat with a new one that is the same model that your old one. The thermostats are available for purchase at a reasonable cost online or in a kitchen products shop. Bake Element The bake element is vital to the operation of your oven. It provides the heat needed to cook food. It's a basic component that transforms electricity into the high temperatures needed for baking, roasting and broiling. Heating elements are typically found in electric ranges and ovens and are either covered or concealed under the oven's floor. In general, oven heating elements consist of high-resistance materials such as nickel-chromium. They work by converting electricity into heat via resistance. This heat then radiates through the interior of the oven to achieve the desired temperature for cooking different types foods. When you turn on the oven the heating elements start to generate heat by the high-voltage current that flows across the surface of the metal. The element is a ribbon or coil (straight or corrugated) of wire, and as the electric current flows through it, it begins to get hotter. The element will glow red hot when it is at the desired temperature. The baked element is the main source of heat for most oven functions. It's typically located at the bottom of the oven and is used to clean the oven in a variety of ovens that are automatic. You might be noticing that the oven does not heat up as quickly or that your food hasn't been cooked completely. To verify that you have a working oven baking element plug your multimeter into its red and black ports, then rub the probes made of steel against each other on the opposite side of your element. Place the other end against one of its terminals and put your hand on it to feel if the element is warm to the contact. If not, take it off the element and start testing again. Broil Element The broil element, typically located at the top of your cavity provides high heat to brown or char the food. Broil settings in ovens are an excellent way to quickly cook meat crisp vegetables, heat lasagna, or caramelize the topping of the casserole. Similar to the bake element the broiler heating element converts electrical energy into heat via the process of resistance. It is comprised of an inner core of metal wires wrapped in an insulating expanded perlite product. The inner core of the element is covered with an outer layer of stainless steel to protect the wires against direct contact with the oven. The three-layer structure helps lower the broil element's temperature making it more secure and efficient than the older designs of elements. 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 rating of your oven. 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 looking at their current and voltage ratings on the oven's control panel. It is also advisable to check the resistance of your old element and compare it with the wattage of your new broiler heating element. The higher the resistance, the more power an oven element uses. Replace your broiler element immediately If it's not working or is acting up. It is crucial that your oven functions properly to cook your most loved food items. If your oven does not function at all, or only intermittently, then the issue could be with another part. Light Bulb and Assembly The oven light lets you keep an eye on your food cooking without having to open the door and let heat escape. The light will also inform you when the casserole has been cooked. It's not uncommon for the bulb to die. This can be very frustrating but it's an simple fix that you can accomplish yourself. Before ovensandhobs begin, be sure that the breaker hasn't tripped and that the three-prong connector remains intact. Take out the old bulb and then look for the new bulb. You may have to search online for the right replacement bulb that matches the wattage of your oven. Some ovens use standard 40-watt appliance bulbs, while others require halogen bulbs up to 50 watts. It is recommended to use cotton gloves to protect the halogen bulbs from the damage caused by oil. Remove the glass casing from the bulb prior to replacing it. You should do this slowly to avoid breaking it. Then, you'll need to remove the air from the bulb and replace it with a mixture. This will provide a longer life for the filament. If your bulb keeps blinking, it could be an electrical issue that needs the assistance of a professional. Double check that you are using the correct oven bulb and look over your Use and Care Guide to get more help in troubleshooting. Remember that it's an excellent idea to unplug your oven and disconnect the power from the outlet before you start any repair. This will protect you from electric shock. Vent Tube The vent tube is a vital oven component that allows for a tiny airflow inside the cavity. This permits the bake element to circulate heat throughout the oven, making sure that the temperature is distributed evenly. It also allows the vapors that are released from the oven to escape and allows smoke to be drawn away from the cooking surface. It is crucial for the efficient operation of any electric or gas oven. Oven vent tubes may become blocked by a variety of factors. Accidental spills or splatters could leave sticky residues in oven vents. These can attract dust, debris and other contaminates that could cause clogs over time. Grease and oil particles may become airborne and settle on the vents, too. Other environmental factors, like kitchen renovations and construction work can introduce dust or other pollutants into the vents, leading to clogs or blockages. Based on the type of the oven the vent tube could include a spreader 46, an fill tip 12 and an a bottle guide 20 that are integrated into the pipe 32. For instance, the bottle guide 20 might have a tapered outer layer which is in harmony with the tapered inner surface of the spreader 46 to allow the vent tube to be easily fitted into various sizes and designs of bottle necks. A blocked vent tube may cause a loss in pressure within the enclosure, which can cause an updraft that pulls exhaust forward and down the vent, damaging the oven components. If you believe that your vent tube is blocked or blocked, contact a professional for help. They will identify the issue and give suggestions for clearing or cleaning the vent.