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How to Repair Common Oven Parts Oven is an appliance in the kitchen that is used to cook food. The heat of the oven sterilizes food items and kills the majority of microorganisms. An accurate oven thermometer is essential for all bakers. Understanding how your oven functions can help you improve your baking cooking, roasting and cooking skills. It will also help eliminate the annoying hot spots that can cause damage to cakes, cookies and baked goods. Thermostat The thermostat is among the most important parts of your oven, helping to ensure that the temperature of your food matches what you've set in the control panel. Unfortunately, like any other electro mechanical switch or sensor it can sometimes have problems that result in the oven going over or under heat, or not be able to maintain the temperature you've set. The oven thermostat is essentially tiny strips of two different metals bonded together. When exposed to heat the different metals expand and bend at different rates, forming 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 heating element's power. As the oven cools, the bimetallic strip contracts, re-establishing the circuit and activating the heating element. This cycle is constantly repeated to maintain a constant temperature in your oven. To identify a problem with the thermostat you'll have to remove the oven and verify 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 displays zero or close to zero the thermostat is operating correctly and doesn't require to be replaced. If the multimeter fails to read anything it means that the thermostat is defective. It needs to be replaced. Cooker Spare Parts suggests that you replace your thermostat with one of the same type as the previous one. They can be purchased through the internet or at an appliance 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 transforms electricity into high temperatures for baking, roasting and broiling. Heating elements are usually found in electric ovens and ranges and are either covered or concealed under the oven's floor. In general, oven heating elements are made from high-resistance materials like nickel-chromium alloy. They convert electricity into heat through resistance. This heat is then radiated through the interior of the oven to attain the temperature required to cook various types of food. When you turn on your oven the heating element gets to produce heat from the high-voltage electrical energy moving across its metal surface. When electricity runs through it the element is heated. When the element reaches its desired temperature, it starts to glow red hot. The baked element is the main source of heat in most oven functions. It's usually located at the lower levels of the oven. Many automatic oven models also have it for self-cleaning. When it starts to burn out, you might be noticing that your oven doesn't heat up as fast or that your food is not fully cooked. Connect your multimeter to its black and red ports. Then, press the probes made of metal on one side of the device against each other. Place the other end against one of its terminals and then place your hands on it to determine if the element is warm to the contact. If not, take it off and try again. Broil Element The broil element, which is usually located on the top of the cavity, offers high temperatures to brown or char food items. The broil setting of your oven is an excellent option for quickly grilling meat and vegetables, crisping up vegetables, warming lasagna or caramelizing the top of a casserole. Similar to the bake element the broiler heating element transforms electrical energy into heat via the process of resistance. It consists of an inner core of metal wires wrapped in insulating perlite material. The inner core is then encased in an outer layer of stainless steel, which protects the wires from direct contact with the oven. The three-layer structure helps reduce the broil element's temperature which makes it safer and more efficient than older styles of elements. While you may use any heating element in your oven, you should choose one that matches the wattage that is recommended for your oven. Using a different wattage can harm your oven or cause it to overheat. The current and voltage ratings of the latest heating elements are available on the control panel of your oven. This will allow you to examine the power and rating of your oven. You should also check the resistance of your previous element and compare it to the wattage of your new broiler heating element. The higher the resistance of an oven element, the greater power it draws from it. Replace the element in your broiler immediately if it is not working or is acting up. Your oven needs to function properly for you to be able to cook your favorite foods. If your oven doesn't work in any way, or just intermittently, then the issue could be in a different part. Light Bulb and Assembly The light lets you monitor your food as it cooks without opening the door and let heat escape. The light will also inform you when the casserole has been cooked. It's not unusual for the bulb to die. This can be frustrating however, it's an simple fix that you can tackle yourself. Check that the breaker is not tripped, and that the connector has three prongs. Remove the old bulb and then find the new one. You may have to search online to find a replacement that matches the wattage and type of oven you have. Some ovens use standard appliances with bulbs that are 40 watts in power some require lamps that are halogen up to 50 watts. Be aware that the oil from your hands could damage the bulb, so you should use cotton gloves when handling it. Remove the glass casing from the bulb prior to replacing it. You should do this slowly so that you don't break it. Then, you'll need to eliminate the air inside the bulb and fill it up with an amalgamation of gases. This will ensure a longer lifespan for the filament. If your bulb keeps going out, there could be a bigger electrical problem that needs to be dealt with by an expert. Verify that you're using the correct oven bulb and consult your Use and Care Guide to find more help in troubleshooting. Remember to unplug the oven and turn off the power before you start any repairs. This will prevent you from getting an electric shock. Vent Tube The vent tube is a crucial oven element because it allows a small amount of airflow to be created inside the cavity. This allows the bake element to circulate heat throughout the oven, ensuring that the temperature is evenly distributed. It also allows the vapors escape from the oven, and smoke to be drained from the cooking surface. It is essential for proper functioning of any gas or electric oven. Vents for ovens can become clogged or blocked by several factors. Accidental spills or splatters can leave sticky residues in oven vents. They can attract debris, dust and other contaminants that could cause obstructions in the course of time. Grease and oil particles can become airborne and settle around the vents, too. Other environmental factors like kitchen and construction projects can cause dust to enter the vents. This can lead to clogs. Based on the oven model the vent tube could comprise a bottle guide 20 or spreader 46 as well as a fill tip 12 that are constructed with the pipe 32. The bottle guide 20 may have a tapered outer edge that is complemented by the tapered inside edge of the spreader, allowing the vent tubes to be placed easily into different sizes and shapes bottle necks. hobs and ovens Ovens & Hobs blocked vent tube could cause a loss in pressure within the enclosure, which can cause an updraft that pulls exhaust forward and down the vent, causing damage to oven's components. Consult a professional if you believe that your vent may be clogged or blocked. They will determine the cause and offer suggestions on how to clear or clean the vent.