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How to Repair Common Oven Parts Ovens are a kitchen appliance that is commonly used to cook food. The heat generated by the oven sterilizes food items and kills the majority of micro-organisms present in them. A reliable oven thermometer is an essential for bakers of all kinds. Knowing how your oven works can help you improve your baking cooking, roasting and cooking abilities. It will also help eliminate those hot spots that can cause damage to cakes, cookies and baked items. Thermostat The thermostat is among the most vital components of your oven, helping to make sure that the temperature of your food matches what you've set in the control panel. As with any electronic mechanical switch or sensor, it may have issues that can cause the oven to over heat or under heat, or just not be able to maintain the temperature at the level you've set. The oven thermostat is tiny strips of two different metals joined. 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 set on the control panel it will shut off power to the heater. As the oven cools the bimetallic strip contract in a way, reestablishing the circuit and turning on the heating element. This cycle is constantly repeated to maintain a constant temperature within your oven. You'll need the oven disconnected and all screws removed to diagnose a thermostat problem. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads 0 or very close to it then the thermostat is operating 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 recommends that you replace the thermostat with a fresh one that is the same model that your old one. The thermostats are sold at a reasonable price online or at a kitchen goods shop. Bake Element The bake element is essential for the proper operation of your oven. It generates heat that lets it cook food items. It's an easy component that transforms electricity into high temperatures for baking, roasting, and broiling. Electric ovens and ranges usually have heating elements, which are either visible or hidden beneath the floor. In general, oven heating elements are made from high-resistance components like nickel-chromium alloy. They work by converting electrical energy into heat by the process of resistance which radiates outwards into the oven's interior, causing it to increase the temperature to the desired temperature for cooking different types of food items. When you switch on your oven, the heating element begins to produce heat from the high-voltage electrical energy moving across its metal surface. When electric current runs through it, the element heats up. 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 located at the bottom 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 is not fully cooked. Connect your multimeter to its red and black ports. Then, touch the probes made of steel on one side of the element to each other. The other end should be placed against one of its terminals and place your hand on it to test whether the baking element is warm to the contact. If not, take it off and try again. Broil Element The broil element, usually found at the top of the cavity, provides high heat to brown or char the food. The broil setting in your oven is a great option for quickly grilling meat and vegetables, crisping up vegetables, warming lasagna or making caramel on 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 consists of an inner core of wires made of metal wrapped in insulating perlite product. The core of the element is then covered with a stainless steel outer layer to shield 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 older designs. You can use any heating element to bake or broiling in your oven. But, you must select one that matches your oven's rated wattage. A different wattage may damage your oven, or cause it to overheat. The current and voltage ratings of the new heating elements are available 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 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 the heating element in your broiler is acting up or doesn't work in any way, you should replace it right away. It is essential for your oven to function correctly to be able to cook all your favorite food items. If, however, your oven isn't functioning at all or only intermittently, the issue may lie with another part of your oven. Light Bulb and Assembly The light lets you monitor your food while it cooks, without opening the door and letting heat escape. The light also alerts you when your casserole is ready. However, it's not uncommon for the light bulb to go out. This can be very frustrating, but it's a relatively easy fix you can tackle yourself. Before best ovens and hobs 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 need to search online for a replacement that is compatible with the wattage and model of oven you have. Some ovens use standard 40-watt appliance bulbs and others require a halogen bulb that is up to 50 watts. Be aware that the oil from your hands can cause damage to the halogen bulb, so consider using cotton gloves when handling it. Before putting the new bulb in, you should first remove it from its glass casing. It is important to do this slowly so that you don't break it. You'll have to remove the air from the bulb and replace it with the mixture. This will ensure a longer filament life. If your bulb keeps going out, there may be a larger electrical problem that needs to be handled by a professional. Double check that you are using the correct oven bulb and look over your Use and Care Guide to get additional troubleshooting tips. Remember that it's recommended to unplug your oven and disconnect it from the outlet prior to you start any repair. This will prevent you from getting an electric shock. Vent Tube The vent tube is an essential oven part that allows for a small airflow inside the cavity. This allows the bake element to circulate heat throughout the oven and ensures that the temperature is evenly dispersed. It also allows the vapors escape from the oven, and smoke to be drawn from the cooking surface. It is essential for proper operation of any electric or gas oven. Vents for ovens can become blocked by many factors. Accidental spills or splatters may leave sticky residues in oven vents. These can attract dust, debris and other contaminants that could cause blockages in the course of time. Grease and oil can also be airborne and settle around vents. Other environmental factors such as construction and kitchen renovations can introduce dust into the vents. This can cause clogs. Based on the model of the oven, the vent tube can include a spreader 46, the fill tip 12, and an a bottle guide 20 that are incorporated into the pipe 32. The bottle guide 20 could have a tapered outer edge that complements the tapered inner edge of the spreader, allowing the vent tubes to be placed effortlessly into various sizes and shapes bottle necks. A blocked or clogged vent tube can result in the loss of pressure inside the structure that surrounds it, which can result in a downdraft which pulls exhaust down vent and backwards through the oven burners, causing damage to the oven components. Contact a professional if you suspect that your vent tube may be clogged or blocked. They will determine the cause and give suggestions for clearing or cleaning the vent.