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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 and kills the majority of microorganisms. A reliable oven thermometer is essential for all bakers. Understanding how your oven functions can help you improve your baking cooking, roasting and cooking abilities. It can also help you avoid those hot spots that can cause damage to cakes, cookies and baked goods. Thermostat The thermostat is among the most vital components of your oven, helping to ensure that the temperature of your food is in line with what you've set in the control panel. However, just like any other electro mechanical switch or sensor it can sometimes have problems that result in the oven going over or under heat, or simply not be able to maintain the temperature at the level you've set. The oven thermostat is basically a small strip made of two different metals connected. When heated, the different metals expand and flex at different rates, making 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 the power to the heater. As the oven cools, the bimetallic strip contracts in a way, reestablishing the circuit and turning on the heating element. This process continues to ensure a constant temperature in your oven. To determine if there is a problem with the thermostat, you'll have to remove the oven and ensure that all screws holding it in place have been removed. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter shows zero or close to zero, the thermostat is functioning correctly and doesn't require to be replaced. If the multimeter does not read anything at all, then the thermostat is not working properly and needs to be replaced. Cooker Spare Parts recommends that you replace the thermostat with a new one of the same type that your old one. They can be purchased online or at a kitchen goods store, and can be bought at a reasonable price. Bake Element Ovens aren't complete without the bake element, which provides heat to make your oven cook food. It's a simple element that transforms electricity into high temperatures for baking, roasting and broiling. my sources and ranges often contain heating elements, which are either visible or hidden under the floor. The majority of oven heating elements are constructed of high-resistance materials such as nickel-chromium alloy. They convert electrical energy into heat via the process of resistance which then radiates through the oven interior to raise the temperature to the desired degree for cooking different types of foods. When you switch on your oven, the heating element begins to generate heat through the high-voltage electricity that flows across its metallic surface. When the electric current runs through it, the element heats up. The element will glow red hot when it reaches the desired temperature. The baked element is the primary source of heat in most oven functions. It's usually located at the bottom of the oven, and is used for the self-cleaning feature in a variety of ovens that are automatic. You might observe that the oven does not warm up as quickly, or that your food hasn't been cooked to perfection. To determine if you have a functioning oven baking element plug your multimeter into its black and red ports, then rub the probes made of steel against each other on one end of the element. The other end of the element on one terminal and place your hand on it. If the element feels warm, take it off it and start testing again. If not, take it off and try again. Broil Element The broil element is typically located in the top of the oven cavity and provides high-temperature heat similar to grills to cook or brown food items. The broil setting of your oven is an excellent option for quickly grilling meat and vegetables, crisping up vegetables, warming lasagna or making caramel on top of a casserole. Similar to the bake element, the broiler heating element converts electrical energy into heat via the process of resistance. It is made up of an internal core of metal wires wrapped in insulating expanded perlite material. The core 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 lower the temperature of the broil element, making it more secure and efficient than older styles of elements. You can use any heating element to bake or broiling in your oven. But, you must choose one that is in line with the wattage of your oven's rating. Utilizing a different wattage may cause damage to 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 will allow you to check the power and rating of your oven. You should also test the resistance of your old element and compare it to the power of the new broiler heating element. The greater the resistance of an oven element, the greater power it draws from it. 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 function properly to to cook your favorite foods. If your oven doesn't function at all, or only intermittently, then the issue could be with another part. Light Bulb and Assembly The light lets you keep an eye on your food while it cooks, without opening the door and letting heat escape. The light also alerts you when your casserole is ready. It's not unusual for the bulb to go. It can be a hassle but it's an easy fix you can tackle yourself. Before you begin, make sure that the breaker hasn't tripped and that the three-prong connector is intact. First, remove the light bulb that was in use and find the new one. You may have to look online for a replacement that is compatible with the wattage and model of your oven. Some ovens utilize standard appliance bulbs that run at 40 watts and others require an halogen lamp that can reach 50 watts. Consider using cotton gloves to protect the halogen bulbs from damage caused by oil. Remove the glass casing from the bulb before replacing it. It's important to take this step slowly to ensure that you don't fracture it. After that, you'll need to evacuate the air inside the bulb and fill it with gas mixture. This will ensure a longer lifespan for the filament. If your bulb is always blinking it could be due to an electrical issue that requires a professional to fix. Make sure you double-check that you're using the correct bulb for your oven, and consult your Use and Care Guide for more troubleshooting tips. Remember to unplug the oven and turn off the power prior to beginning any repairs. This will protect your from electrical shock. Vent Tube The vent tube is an important oven part as it allows for a small amount of airflow to be created within the cavity. This allows the bake element to circulate heat around 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 drawn away from the cooking surface. It is essential for the proper operation of any gas or electric oven. Vents for ovens can become blocked due to a variety of factors. Accidental spills or splatters could leave sticky residues on oven vents. They can attract debris, dust and other contaminants that can cause clogs in the course of time. Oil and grease particles can be blown into the air and settle around the vents, as well. Other environmental factors, such as kitchen construction and renovations, can bring dust or other pollutants into the vents, resulting in blockages or clogs. Depending on the model of the oven, the vent tube can include a spreader 46, the fill tip 12, and the bottle guide 20 which are incorporated into the pipe 32. The bottle guide 20 could have a tapered edge that is complemented by the tapered inside edge of the spreader, allowing the vent tubes to slide smoothly into different sizes and shapes of bottle necks. A clogged or blocked vent tube can result in the loss of pressure inside the enclosing structure. This can create a downdraft situation which pulls exhaust down vent and then backwards over the oven burners, causing damage to oven components. Consult a professional if you suspect that your vent tube may be clogged or blocked. They will identify the problem and offer suggestions on how to clean or clean the vent.