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How to Repair Common Oven Parts Ovens are an appliance in the kitchen that is used to cook food. The heat generated by the oven sterilizes food items and kills the majority of microorganisms. All bakers need an accurate oven thermometer. Knowing how your oven functions will help improve your baking and roasting skills, and eliminate those annoying hot spots that can cause havoc with cakes, cookies and other baked goods. Thermostat The thermostat is an essential part 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, just like any other sensor or switch that is electro-mechanical. The oven could overheat or underheat, or not keep the temperature you set. The oven thermostat is essentially a small strip of two different metals joined. When heated to a certain temperature, the two metals expand and bend at different rates. This creates an electrical circuit. When the metal in the thermostat attains the temperature you've set on your control panel, it shuts off the power to the heating element. As the oven cools the bimetallic strip expands, re-establishing the circuit and turning on the heating element. This cycle continues for a long time to ensure a constant oven temperature. To determine if there is a issue with the thermostat, you'll need to unplug the oven and ensure that all screws holding it in place have been removed. If best hobs uk own 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 zero or very close to it the thermostat is operating properly and doesn't need to be replaced. If the multimeter isn't reading anything, then the thermostat is faulty and must be replaced. Cooker Spare Parts suggests that you replace your thermostat with a similar model as the one you have. They are available online or at a kitchen goods store, and can be purchased at a reasonable cost. Bake Element Ovens can't be complete without the bake element which creates heat to make your oven cook food. It's a simple component that transforms electricity into high temperatures for baking, roasting and broiling. Electric ovens and ranges typically contain heating elements, which are either visible or hidden beneath the floor. In general, oven heating elements consist of high-resistance materials such as nickel-chromium. They work by converting electrical energy into heat through the process of resistance, which then radiates through the oven's interior, causing it to increase the temperature to the desired temperature to cook different kinds of food. When you start the oven the heating elements start to produce heat due to the high-voltage electric current flowing across the metal's surface. The element is a coil or ribbon (straight or corrugated) of wire. When the electric current flows through it, it begins to increase in temperature. The element will appear red hot when it reaches the temperature you want. The baked element is the primary source of heat for the majority of oven functions. It's usually located at the lower levels of the oven. A lot of ovens that are automated also have it to clean themselves. When it begins to smoke, you might be noticing that your oven doesn't preheat as quickly or that your food isn't cooked through completely. Plug your multimeter in to its red and black ports. Then, press the probes made of metal on one end of the device against each other. Set the other end of the probe against one of its terminals and then place your hands on it to feel whether the element is warm to the contact. If it's not, remove the element and test again. Broil Element The broil element is typically situated in the top of the oven's cavity and produces high heat like grills to cook or brown food items. The oven's broil setting is a great way to quickly grill meat crisp vegetables, heat 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 consists of an inner core of wires made of metal wrapped in an insulating expanded perlite material. The inside of the element is then covered with a stainless steel outer layer to protect the wires against direct contact with the oven. The three-layer structure helps reduce the broil element's temperature, making it more secure and efficient than older types of elements. You can use any heating element for baking 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 can cause damage to your oven or cause it overheat. You can determine the power of your oven and the rating of the new heating element by checking their current and voltage ratings on the oven's control panel. You should also 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. If your broiler's heating element is malfunctioning or isn't working in any way, you should replace it as soon as possible. Your oven must work properly for you to be able to cook your favourite meals. However, if your oven isn't working at all, or is only working intermittently, the issue may be with a different part of your oven. Light Bulb and Assembly The light allows you to monitor the food that is cooking, without opening the door and letting heat escape. The light also lets you know when the casserole is ready. It's not uncommon for the bulb to go. This can be frustrating but it's an simple fix that you can do yourself. Make sure that the breaker is not tripped and that the connector has three prongs. First, take out the light bulb that was in use and find the new one. You may have to look online for a replacement bulb that matches the wattage and type of oven you have. Some use standard 40-watt appliance bulbs, while others require a halogen bulb that is up to 50 watts. Be aware that the oil from your hands could damage a halogen bulb, so it is recommended to use cotton gloves when handling it. Remove the glass casing of the bulb before you replace it. It is important to do this slowly so that you don't fracture it. Then, you'll need to remove the air from the bulb and replace it with a mixture. This ensures a longer life for the filament. If your light bulb is constantly going out it could be due to an electrical issue that needs a professional to fix. Make sure you double-check that you're using a correct bulb for your oven, and look over your Use and Care Guide for more troubleshooting tips. And remember that it's always a good idea to unplug your oven and disconnect the power from the outlet before you start any repair. This will prevent you from suffering an electric shock. Vent Tube The vent tube is an important oven component that allows for a small airflow inside the cavity. This allows the bake-element to circulate heat throughout the oven, ensuring that the temperature is distributed evenly. It also allows vapors to escape from the oven, and smoke to be drawn from the cooking surface. It is crucial for the efficient operation of any gas or electric oven. Vents for ovens can become clogged or blocked by several reasons. Accidental spills and splatters from cooking can leave sticky residues on oven vents, which attract dust and other debris that could eventually cause clogs or blockages over time. Oil and grease particles can be blown into the air 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 may include a bottle guide 20 or spreader 46 as well as a fill tip 12 that are constructed with the pipe 32. For example, the bottle guide 20 might have a tapered exterior surface that is complemented by the tapered inside of the spreader 46 to allow the vent tube to be easily inserted into different sizes and forms of bottle necks. A clogged or blocked vent tube can cause a loss of pressure within the structure that surrounds it, which could result in a downdraft that pushes exhaust down the vent and backwards through the oven's burners, causing damage to oven components. If you suspect that the vent tube in your oven is clogged or blocked, consult an expert for assistance. They will determine the cause and provide recommendations for removing or cleaning the vent.