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How to Repair Common Oven Parts The oven is an appliance in the kitchen that is commonly used to cook food items. The heat generated by the oven sterilizes food and kills most of the micro-organisms in them. A precise oven thermometer is an essential for bakers of all kinds. Knowing how your oven functions can help you improve your baking and roasting abilities and eliminate those annoying hot spots that wreak havoc with cakes, cookies and other baked items. Thermostat The thermostat is an essential component of your oven. It helps to ensure that the temperature of food corresponds to the temperature you have set on the control panel. Unfortunately, like any other electro mechanical switch or sensor, it may have issues that cause the oven to over heat or under heat, or not be able to maintain the temperature you've set. The oven thermostat is basically an extremely small strip of two different metals that are joined. When heated the various metals expand and contract at different rates, creating or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you set on the control panel it will shut off power to the heater. As the oven cools, the bimetallic strips contract to re-establish the circuit before turning on heating element. This cycle is repeated continuously to maintain a constant oven temperature. You'll need the oven 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 it means that the thermostat is working properly and doesn't need to be replaced. If the multimeter doesn't read anything, it's likely that the thermostat is not working properly and must be replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the old one. They can be purchased online or at an appliance store and can be purchased at a reasonable price. Bake Element The bake element is crucial for the proper operation of your oven. It generates the heat needed to cook food. It's an easy component that transforms electricity into high temperatures for baking, roasting, and broiling. Heating elements are typically found in electric ovens and ranges, and they can be covered or hidden beneath the oven's floor. In general oven heating elements comprise of high-resistance metals like nickel-chromium. They work by converting electricity into heat via resistance. The heat then radiates through the oven's interior to attain the temperature required to cook different kinds of food. When you start the oven the heating elements begin to generate heat by the high-voltage electric current flowing across the metal surface. When electricity is flowing through it, the element heats up. The element will appear red hot when it reaches the desired temperature. The baked element is the main source of heat for the majority of oven functions. It's typically located in the bottom of the oven and is also used for the self-cleaning feature in a variety of ovens that are automatic. When it starts to smoke you may notice that your oven doesn't warm as quickly or your food isn't cooked through completely. To verify that you have a working oven baking element plug your multimeter into its red and black ports, and then place the probes made of metal against each other on the opposite side of your element. Set the other end of the probe against one of its terminals and then place your hands on it to test whether the element is warm to the contact. If not, take it off and try again. Broil Element The broil element, which is typically located at the top of the cavity, allows high-temperature temperatures to brown or char the food. The broil setting of your oven is a great option for quickly searing meat and vegetables, crisping up vegetables, warming lasagna, or caramelizing the top of the casserole. The broiler heating element is similar to the bake element in that it converts electrical energy by resistance into heat. It is composed of an inner core comprised of metal wires, which are wrapped in an insulating expanded product called perlite. The inner core is enclosed in an outer layer of stainless steel to shield the wires from direct contact with the oven. The three-layer design helps to lower the temperature of the broil element, making it more secure than older designs. While you can use any baking or broiling heating element in your oven, it is important to choose one that is in line with the rated wattage of your oven. Using a different wattage can damage your oven or cause it to overheat. The current and voltage ratings of the latest heating elements can be found on the control panel of your oven. This allows you to determine the ratings and wattage of your oven. You should also test the resistance of your previous element and compare it with the wattage of your new broiler heating element. The higher the resistance, the greater energy an oven element consumes. If your broiler heating element is not working or functions at all, you should replace it as soon as possible. Your oven must function properly to be able to cook your favourite 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 monitor your food while it cooks without opening the doors and letting heat escape. The light also informs you when your casserole is ready. It's not uncommon for the light bulb to fail. It can be quite frustrating, but you can do it yourself. Before you begin, be sure that the breaker hasn't tripped and that the three-prong connector is in good condition. Take out the old bulb and then find the new one. You may need to search the internet to find the correct replacement bulb that is compatible with the wattage of your oven. Some ovens use standard appliance bulbs that run at 40 watts some require a halogen lamp up to 50 watts. Be aware that the oil from your hands could damage the halogen bulb, so it is recommended to use cotton gloves when handling it. Remove the glass casing of the bulb before you replace it. You should do this slowly to avoid breaking it. After that, you'll need to remove the air from the bulb and fill it up with an amalgamation of gases. This will ensure a longer lifespan for the filament. If your light bulb is always going out, there could be a wider electrical issue that must be dealt with by a professional. Be sure to double check that you're using the correct bulb for your oven and check out your Use and Care Guide for additional troubleshooting suggestions. Be sure to unplug your oven and turn off the power before beginning any repairs. This will prevent you from suffering an electric shock. Vent Tube The vent tube is an important oven part as it allows for a small amount of airflow to flow within the cavity. This allows the bake element to circulate heat throughout the oven and ensures that the temperature is evenly dispersed. It also allows vapors from the oven to escape as well as allows smoke to be drawn away from the cooking surface. It is crucial for the proper operation of any electric or gas oven. hob uk for ovens can become blocked or clogged due to a variety of factors. Accidental spills or splatters while cooking can leave sticky residues on oven vents, which attract dust and other debris that can eventually cause obstructions or blockages in the course of time. Grease and oil can also be airborne and then settle around vents. Other environmental factors, like kitchen construction and renovations, can introduce dust or other contaminants into the vents, resulting in obstructions or clogs. Based on the type of the oven, the vent tube can comprise a spreader 46, an fill tip 12 and the bottle guide 20 which are integrated into the pipe 32. The bottle guide 20 could be fitted with a tapered outer edge that matches the tapered inside edge of the spreader to allow the vent tubes to be inserted smoothly into different sizes and shapes bottle necks. A clogged vent tube can cause a decrease in pressure within the enclosure, which can lead to an updraft that pulls exhaust forward and down the vent, causing damage to oven components. Consult a professional if suspect that your vent tube may be clogged or blocked. They will identify the problem and make recommendations on how to clear or clean the vent.