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How to Repair Common Oven Parts Ovens are a common kitchen appliance used to cook food. The heat from the oven sterilizes food items and kills the majority of microorganisms. Every baker needs an accurate oven thermometer. Knowing how your oven works will help improve your baking cooking, roasting and cooking abilities. It will also eliminate those annoying hot spots which can ruin cakes, cookies and baked goods. Thermostat The thermostat is among the most crucial components of your oven, assisting to make sure that the temperature of your food is exactly what you've set in your control panel. It could be a problem as with any other sensor or switch that is electro-mechanical. The oven can overheat or underheat, or simply not keep the temperature you have set. The oven thermostat is essentially a small strip of two different metals bonded together. When heated by the oven, the metals expand or bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature you have set on your control panel it will turn off the heating element's power. As the oven cools down, the bimetallic strip contracts in a way, reestablishing the circuit and turning on the heating element. This cycle is repeated continuously to ensure a constant oven temperature. The oven must be disconnected and all screws removed in order to determine the problem with the thermostat. If you own a multimeter (which is a tool that measures electrical current) set it to the ohms level and then test the thermostat. If the multimeter reads zero or close to zero it means that the thermostat is working correctly and doesn't require to be replaced. If the multimeter doesn't read anything at all, then the thermostat is faulty and must be replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the previous one. They can be purchased online or at the kitchen store, and can be bought at a reasonable cost. Bake Element The bake element is essential to the operation of your oven. It provides heat that allows it to cook food items. 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 can be exposed or hidden under 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 via 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. When you switch on your oven the heating element starts to produce heat from the high-voltage electrical energy flowing across its metal surface. The element is a coil or ribbon (straight or corrugated) of wire. When the electric current passes through it, it begins to increase in temperature. The element will turn red hot when it reaches the desired temperature. The baked element is the main source of heat used in most oven functions. It's usually found in the bottom of the oven, and is used for the self-cleaning feature in a variety of ovens that are automatic. You might be noticing that the oven doesn't heat up as quickly or that your food hasn't been fully cooked. To determine if you have a functioning oven baking element, plug your multimeter into its red and black ports, then rub the metal probes against each other on one end of your device. The other end of the baking element against one terminal and place your hands on it. If the element feels warm, take it off it and start testing again. If not, remove it and try again. Broil Element The broil element, typically located at the top of your cavity, offers high temperatures to brown or char the food. The broil setting of your oven is a great option for quickly grilling meat, crisping vegetables, reheating lasagna, or caramelizing the top of a casserole. The broiler heating element is comparable to the bake element in that it converts electrical energy through resistance into heat. It is comprised of an inner core of metal wires wrapped in an insulating expanded perlite material. The inner core is enclosed in an outer layer of stainless steel to protect the wires from direct contact with the oven. The three-layer design can help lower the temperature of the broil element, making it safer than the older models. While you are able to use any heating element in your oven, you should choose one that matches the rated wattage of your oven. A different wattage can damage your oven, or cause it to overheat. The voltage and current ratings of the latest heating elements can be found on the control panel of your oven. This will allow you to check the wattage and rating of your oven. Verify the resistance of the previous element, and compare it to the wattage rating of the new one. The higher the resistance, the greater power an oven element uses. Replace the broiler element as soon as possible if it is not functioning or if it's acting up. Your oven must function properly for you to to cook your favorite foods. If your oven does not operate at all, or only intermittently, the issue may be a problem with a different component. Light Bulb and Assembly The light lets you monitor your food while it cooks, without opening the door and letting heat escape. The light will also let you know when the casserole is finished. It's not uncommon for the bulb to go. This can be frustrating but it's an simple fix that you can tackle yourself. Check that the breaker isn't tripped and that the connector has three prongs. Remove oven hob , and then locate the new one. It is possible to look online to find the correct replacement bulb that is compatible with your oven's wattage. Some ovens use standard appliance bulbs that run at 40 watts some require an halogen lamp that can reach 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. Before you put the new bulb in place, you should first take it out of its glass casing. You should do this slowly to avoid breaking it. After that, you'll need to remove the air from the bulb and fill it with a mixture of gases. This will ensure a longer filament life. If your bulb is constantly going out, there could be a bigger electrical issue that should be addressed by an expert. Be sure to double check that you're using the right bulb for your oven and consult your Use and Care Guide for more troubleshooting advice. Remember to unplug the oven and turn off the power prior to beginning any repairs. This will help protect you from electrical shock. Vent Tube The vent tube is a crucial oven part as it allows a small amount of airflow to be created within 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 that are released from the oven to escape, and allows smoke to be drained away from the cooking surface. It is essential for proper functioning of any electric or gas oven. Oven vent tubes can become blocked or blocked due to several factors. Accidental spills or splatters can leave sticky remnants in oven vents. These can attract debris, dust and other contaminates that could cause obstructions over time. Grease and oil particles may become airborne and settle around the vents, as well. Other environmental factors, such as kitchen construction and renovations, can introduce dust or other contaminants into the vents, which can cause blockages or clogs. Based on the oven model the vent tube could comprise an a bottle guide 20 or spreader 46 as well as a fill tip 12 that are constructed with the pipe 32. The bottle guide 20 can have a tapered outer edge that is complemented by the tapered inside edge of the spreader, allowing the vent tubes to be placed easily into different sizes and shapes of bottle necks. A blocked vent tube may cause a reduction in pressure inside the enclosure which can lead to an updraft that pulls exhaust backwards and down the vent, causing damage to the oven's components. Contact a professional if you suspect that your vent tube could be blocked or clogged. They will determine the cause and make recommendations on how to remove or clean the vent.