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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 and kills the majority of microorganisms. A reliable oven thermometer is essential for all bakers. 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 one of the most important parts of your oven, helping ensure that the temperature of your food is exactly the temperature you've set on your control panel. However, just like any other electro mechanical switch or sensor it can sometimes have problems that can cause the oven to over heat or under heat, or just not be able to maintain the temperature at the level you've set. The oven thermostat is essentially tiny strips of two different metals that are bonded. When heated, the different metals expand and flex at different rates, forming or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you set on the control panel it will turn off the heating element's power. As the oven cools down the bimetallic strip expands to re-establish the circuit before turning on the heating element. Best ovens is repeated continuously to maintain 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. If you have a multimeter (which is a device that analyzes electrical current), set it to the ohms setting and then test the thermostat. If the multimeter reads 0 or very close to it then the thermostat is working correctly and doesn't require to be replaced. If the multimeter isn't reading anything, it's likely that the thermostat is defective and requires replacement. Cooker Spare Parts suggests that you replace your thermostat with a similar type as the previous one. The thermostats are available for purchase at a reasonable cost online or at the kitchen store. Bake Element Ovens can't be 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 typically contain heating elements, which can be either exposed or hidden under the floor. Generally, oven heating elements are made from high-resistance materials like nickel-chromium alloy. They work by converting electrical energy into heat by the process of resistance which then radiates throughout the oven's interior, causing it to increase the temperature to the desired degree to cook various types of food items. When you start the oven, the heating elements begin to generate heat by the high-voltage current flowing across the surface of the metal. When the electric current runs through it, the element heats up. When the element reaches its desired temperature it starts to shine red hot. The baked element is the main source of heat for most oven functions. It's typically located in the bottom of the oven and is used to perform the self-cleaning function in many automatic oven models. If it starts to burn out you may be noticing that your oven doesn't preheat as quickly or that your food is not cooked through completely. Plug your multimeter in to its black and red ports. Then, you can press the metal probes on one end of the element against each other. Place the other end against one of its terminals and place your hand on it to determine whether the element is warm to the contact. If not, remove it and try again. Broil Element The broil element is usually situated in the upper part of the oven and can provide high heat like a grill to cook or brown food. Broil settings in ovens are an excellent way to quickly sear meat or crisp vegetables, to heat up lasagna or caramelize the top of a casserole. Similar to the bake element, the broiler heating element converts electrical energy into heat by the process of resistance. It is made up of an inner core made up of metal wires, wrapped in an insulating, expanded material called perlite. The inner core is wrapped in an outer layer of stainless steel, which protects the wires from direct contact with the oven. The three-layer structure helps lower the broil element's temperature making it more secure and efficient than older types of elements. While you may use any heating element in your oven, make sure to select one that is compatible with the wattage that is recommended for your oven. Utilizing a different wattage may cause damage to your oven or cause it to overheat. You can check the power of your oven and the rating of the new heating element by looking at their current and voltage ratings on the oven's control panel. Verify the resistance of your old element, and compare it to the wattage rating of the new one. The higher the resistance of an oven element, the more power it uses. Replace your broiler element immediately in the event that it isn't working or is acting up. Your oven must function correctly to to cook your favorite meals. If, however, your oven isn't working at all or only intermittently, the issue may be in a different area of your oven. Light Bulb and Assembly The oven light lets you keep an eye on your food while it cooks without opening the door to let heat escape. The light also alerts you when the casserole is ready. But it's not uncommon for the light bulb to fail. It can be frustrating but you can fix it yourself. Make sure that 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 need to look online to find a replacement that matches the wattage and the type of oven you have. Some ovens use normal appliance bulbs that are 40 watts in power, while others need a halogen lamp up to 50 watts. You should consider using cotton gloves to protect the bulbs from damage caused by oil. Remove the glass casing of the bulb before replacing it. It is important to do this slowly to avoid breaking it. Then, you'll need to evacuate the air inside the bulb and fill it with gas mixture. This will prolong the lifespan of the filament. If your bulb keeps running out it could be an electrical problem that requires an expert to fix it. Be sure to double check that you're using the correct 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 prior to beginning any repairs. This will keep you from being shocked by electricity. 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, ensuring that the temperature is evenly dispersed. It also allows vapors from the oven to escape, and allows smoke to be drawn away from the cooking surface. It is essential for proper functioning of any electric or gas oven. Vents in ovens can get clogged or blocked by several reasons. Accidental spills or splatters while cooking can leave sticky residues on oven vents, which could attract dust and other particles which can lead to clogs or blockages over time. Grease and oil may also become airborne, and then settle around vents. Other environmental factors, like kitchen renovations and construction work, can bring dust and other contaminants into the vents, which can cause clogs or blockages. Depending on the model of the oven, the vent tube can include a spreader 46, the fill tip 12, and the bottle guide 20 which are incorporated into the pipe 32. For example the bottle guide 20 could have a tapered exterior surface that is complemented by the tapered inner surface of the spreader 46, allowing the vent tube to be smoothly placed into various sizes and shapes of bottle necks. A clogged vent tube can cause a reduction in pressure inside the enclosure, which could cause an exhaust downdraft, which pulls the exhaust backwards and then down the vent, damaging the oven's components. If you think that your vent tube is blocked or blocked, call an expert for assistance. They will diagnose the issue and offer suggestions on how to clear or clean the vent.