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How to Repair Common Oven Parts Ovens are a kitchen appliance that is commonly used to cook food. best hob Ovens & Hobs generated by the oven sterilizes food items and kills the majority of microorganisms. An accurate oven thermometer is essential for all bakers. Knowing how your oven functions can help you improve your baking and roasting skills, and eliminate those frustrating hot spots that cause havoc with cookies, cakes and other baked items. Thermostat The thermostat is one of the most crucial components of your oven, assisting to make sure that the temperature of your food is exactly what you've set on the control panel. It could be a problem as with any other switch or sensor that is electro-mechanical. The oven may overheat or underheat, or not keep the temperature you have set. The oven thermostat is basically a small strip made of two different metals connected. When exposed to heat the different metals expand and bend at different rates, forming or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you have set on the control panel it will turn off the power to the heater. When the oven cools down the bimetallic strip contract in a way, reestablishing the circuit and activating the heating element. This cycle continues for a long time to maintain a constant oven temperature. The oven must be disconnected and all screws removed to diagnose the problem with the thermostat. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter shows zero or close to zero the thermostat is operating properly and doesn't need to be replaced. If the multimeter does not read anything, then the thermostat is not working properly and requires replacement. Cooker Spare Parts suggests that you replace your thermostat with a similar type as the old one. The thermostats are available for purchase at a reasonable price online or in the kitchen store. Bake Element Ovens are not complete without the bake element, which creates heat to make your oven cook food. It's a simple element that transforms electricity into high temperatures for baking, roasting and broiling. Electric ovens and ranges typically have heating elements, which can be either exposed or hidden beneath the floor. In general oven heating elements are made up of high-resistance metals such as nickel-chromium. They work by converting electrical energy into heat using resistance. The heat then radiates through the oven's interior to attain the desired temperature to cook different kinds of food. When you turn on the oven the heating elements start to produce heat through the high-voltage current flowing across the metal's surface. The element is a coil or ribbon (straight or corrugated) of wire, and as the electric current passes through it, it begins to increase in temperature. When the element reaches its temperature it starts to glow red hot. The baked element is the main source of heat for the majority of oven functions. It is typically located at the in the bottom of the oven. Many ovens with automatic heating also utilize it to clean themselves. You might observe that the oven does not get hot as fast or that your food isn't cooked to perfection. To verify that you have a working oven baking element connect your multimeter to its red and black ports, then rub the probes made of steel against each other on one side of your device. The other end of the element against one terminal and place your hands on it. If the element feels warm, remove it and test it again. If it's not, take off the element and start testing again. Broil Element The broil element is usually located at the upper part of the oven cavity and provides high heat like grills to roast or grill food items. The broil setting in your oven is a great choice for quickly searing meat and vegetables, crisping up vegetables, warming lasagna or caramelizing the top of the casserole. The broiler heating element has a similarity to the bake element in that it converts electrical energy through resistance into heat. It is comprised of an inner core made up of metal wires, wrapped in an insulating expanded product called perlite. The inner core is enclosed 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 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 select one that matches the wattage of your oven's rating. A different wattage could cause damage to your oven or cause it to overheat. You can verify the power of your oven and the rating of the new heating element by examining their voltage and current ratings on the control panel of your oven. Examine the resistance of your old element, then compare it with the wattage rating of the new one. The higher the resistance of an oven element, the more power it draws. If your broiler heating element is acting up or doesn't work at all, you should replace it right away. Your oven needs to function correctly to to cook your favorite meals. If your oven does not function in any way, or just intermittently then the problem may be with another part. Light Bulb and Assembly The light allows you to keep an eye on your food while it cooks, without opening the door and letting heat escape. The light will also notify you when the casserole is finished. It's not uncommon for the bulb to fail. This can be frustrating however, it's an simple fix that you can do yourself. Check that the breaker isn't tripped and that the connector has three prongs. Take out the old bulb and then locate the new one. You may have to search the internet to find the correct replacement bulb that is compatible with the wattage of your oven. Some ovens use standard appliances with bulbs that run at 40 watts some require a halogen lamp up to 50 watts. Be aware that the oils from your hands could damage a halogen bulb, so consider using cotton gloves when handling it. Before putting the new bulb into place You must first remove it from its glass casing. Do this slowly to avoid breaking it. Then, you'll need to evacuate the air inside the bulb and fill it with an amalgamation of gases. This will prolong the filament life. If your light bulb is always being replaced, it may be a larger electrical issue that should be handled by a professional. Make sure you double-check that you're using a correct bulb for your oven, and consult your Use and Care Guide for more troubleshooting advice. Remember to unplug the oven and shut off the power before you start any repairs. This will keep you from getting an electric shock. Vent Tube The vent tube is an important oven component that permits a small airflow 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 vital for the proper operation of any electric or gas oven. Oven vent tubes can become blocked or blocked due to several factors. Accidental spills and splatters from cooking can leave sticky residues on oven vents, which could attract dust and other particles that could eventually cause obstructions or blockages in the course of time. Grease and oil particles can be blown into the air and settle around the vents, as well. Other environmental factors, like kitchen construction and renovations, can bring dust and other contaminants into the vents, which can cause clogs or blockages. Based on the oven model the vent tube may comprise a bottle guide 20 and spreader 46, as well as fill tip 12 that are constructed with the pipe 32. For example, the bottle guide 20 might have a tapered outer layer which is in harmony with the tapered inside of the spreader 46. This allows the vent tube to be effortlessly fitted into various sizes and shapes of bottle necks. A blocked vent tube could cause a decrease in pressure inside the enclosure which can cause an exhaust downdraft, which pulls the exhaust forward and down the vent, causing damage to oven's components. If you suspect that your vent tube is clogged or blocked, call a professional for help. They will identify the issue and offer suggestions for removing or cleaning the vent.