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How to Repair Common Oven Parts The oven is a kitchen appliance that is typically used to cook food items. The heat generated by the oven sterilizes food items and kills most of the micro-organisms that are present in them. A precise oven thermometer is essential for bakers of all kinds. Understanding how your oven functions can help you improve your baking, roasting and cooking skills. It will also eliminate those annoying hot spots which can ruin cookies, cakes and baked items. Thermostat The thermostat is an important component of your oven. It helps to ensure that the temperature of food is in line with the temperature that you set on the control panel. It can be problematic as with any other switch or sensor that is electro-mechanical. The oven may overheat or underheat, or simply not keep the temperature you have set. The oven thermostat is basically an extremely small strip of two different metals connected. When exposed to heat, the various metals expand and contract at different rates, forming or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you have set on your control panel, it will shut off power to the heater. As the oven cools the bimetallic strips expand, re-establishing circuit and turning on heating element. This cycle continues for a long time to ensure a constant oven temperature. To diagnose a problem with the thermostat you'll need to unplug the oven and verify that all of the screws that hold it in place have been removed. If you have a multimeter (which is a device that detects the electrical current), set it to the ohms setting and then test the thermostat. If the multimeter reads zero or very close to it, then the thermostat is functioning properly and doesn't require to be replaced. If the multimeter does not read anything at all, then the thermostat is not working properly and must be replaced. Cooker Spare Parts suggests that you replace your thermostat with one of the same type as the old one. They can be purchased online or at the kitchen store, and are available at a reasonable price. Bake Element Ovens can't be complete without the bake element, which provides heat to make your oven cook food. It's a simple component that converts electricity into high temperatures for baking, roasting and broiling. Heating elements are typically found in electric ovens and ranges and are either uncovered or hidden under the oven's floor. In general oven heating elements comprise of high-resistance materials such as nickel-chromium. They convert electricity into heat via resistance. This heat is then radiated through the interior of the oven to reach the temperature required to cook different kinds of food. When you switch on the oven, the heating elements begin to generate heat by the high-voltage electric current flowing across the metal's surface. When electricity flows through it the element is heated. When hobs and ovens reaches its temperature it begins to glow red hot. The baked element is the main source of heat for most oven functions. It is usually located at lower levels of the oven. Many ovens with automatic heating also utilize it to clean themselves. If it starts to burn out, you might find that your oven isn't able to warm as quickly or your food isn't cooked through completely. To check for a working oven baking element plug your multimeter into its red and black ports, then touch the probes made of metal against each other on the opposite side of your element. Place the other end of the element on one terminal and place your hands on it. If the element feels warm, remove it and try testing it again. If it's not, remove the element and test again. Broil Element The broil element, typically located at the top of your cavity, provides high heat to cook or char food items. Broil settings in ovens are an excellent way to quickly grill meat or crisp vegetables, to heat up lasagna or caramelize the topping of a casserole. The broiler heating element has a similarity to the bake element in that it converts electrical energy through resistance into heat. It is made up of an internal core of wires made of metal wrapped in an insulating expanded perlite product. The inner core of the element is covered with an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer design helps reduce the temperature of the broil element, making it more secure than older styles. You can use any heating element to bake or broiling in your oven. However, it is important to select one that matches the wattage that your oven is rated for. A different wattage may harm your oven, or cause it overheat. The voltage and current ratings of the new heating elements can be found on the control panel of your oven. This will allow you to check the ratings and wattage of your oven. Verify the resistance of the old element, and compare it with the wattage rating of the new one. The greater the resistance of an oven element the greater power it draws from it. If your broiler's heating element is not working or functions at all, you must replace it as soon as possible. It's important for your oven to function properly to cook all of your favorite food items. If your oven does not work in any way, or just intermittently then the problem may be in a different part. Light Bulb and Assembly The oven light lets you keep an eye on your food while it cooks without opening the door and let heat escape. The light will also notify you when the casserole has been cooked. It's not uncommon for the light bulb to fail. This can be frustrating but it's an simple fix that you can do yourself. Before you start, make sure that the breaker hasn't tripped and that the three-prong connector is in good condition. First, take out the light bulb that was in use and find the new one. You may need to search online to find a replacement that matches the wattage and the type of your oven. Some ovens use standard 40-watt appliance bulbs and others require halogen bulbs up to 50 watts. Be aware that the oil from your hands can cause damage to a halogen bulb, so consider using cotton gloves when handling it. Remove the glass casing of the bulb before you replace it. It is important to take this step slowly to ensure that you don't break it. Then, you'll need to eliminate the air inside the bulb and fill it with an amalgamation of gases. This will extend the lifespan for the filament. If your bulb keeps running out it could be due to an electrical problem that requires the assistance of a professional. Make sure you're using the correct oven bulb and check your Use and Care Guide for more troubleshooting advice. Make sure to unplug the oven and shut off the power before you start any repairs. This will help 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 allows the bake element to circulate heat throughout the oven, ensuring that the temperature is evenly distributed. It also allows vapors from the oven to escape, and allows smoke to be removed from the cooking surface. It is essential for the proper operation of any gas or electric oven. Vents in ovens can get blocked due to many factors. Accidental spills and splatters from cooking can leave sticky residues on the oven vents, which could attract dust and other particles that could eventually cause clogs or blockages over time. Grease and oil may also become airborne, and build up around vents. Other environmental factors, such as kitchen renovations and construction work can bring dust or other pollutants into the vents, leading to obstructions or clogs. Based on the oven model, the vent tube may comprise an a bottle guide 20 or spreader 46 as well as a fill tip 12 that are integrally constructed with the pipe 32. The bottle guide 20 could have a tapered outer edge that complements the tapered inside edge of the spreader, allowing the vent tubes to be placed smoothly into different sizes and shapes of bottle necks. A blocked vent tube could cause a reduction in pressure within the enclosure, which can lead to an updraft that pulls exhaust backwards and down the vent, damaging the oven's components. If you believe that your vent tube is blocked or blocked, contact a professional for help. They will identify the issue and offer suggestions for removing or cleaning the vent.
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