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How to Repair Common Oven Parts The oven is an appliance used in kitchens that is typically used to cook food items. The heat generated by the oven sterilizes food and kills the majority of micro-organisms in them. A reliable oven thermometer is an essential for bakers of all kinds. Knowing how your oven functions can help you improve your baking cooking, roasting and cooking skills. It can also help you avoid the annoying hot spots that can ruin cakes, cookies and baked goods. Thermostat The thermostat is an important element of your oven. It helps to ensure that the temperature of food matches the temperature you set on the control panel. It can be problematic as is any other sensor or switch that is electro-mechanical. The oven may overheat or underheat, or not maintain the temperature you set. The oven thermostat is an extremely small strip of two different metals bonded together. When heated the different metals expand and flex at different rates, creating or breaking an electrical circuit. When the metal in your thermostat reaches the temperature that you have set on the control panel it will shut off the power to the heater. As the oven cools down the bimetallic strip contract to re-establish the circuit before turning on the heating element. This cycle continues for a long time to maintain a constant oven temperature. It is necessary to disconnect the oven and all screws removed to identify a thermostat problem. Set your multimeter to the Ohms setting, and then test the thermostat. If the multimeter reads zero or very close to it then the thermostat is working correctly and doesn't need to be replaced. If the multimeter doesn't read anything, the thermostat is faulty. It is time to get it replaced. Cooker Spare Parts suggests that you replace your thermostat with one of the same type as the old one. They are available online or at the kitchen store, and are available at a reasonable price. Bake Element Ovens can't be complete without the bake element, which creates heat to make your oven cook food. It's a small component that transforms electricity into the high temperatures needed for baking, roasting and broiling. Heating elements are commonly found in electric ranges and ovens, and they can be either uncovered or hidden under the oven's floor. Generally, oven heating elements are made of high-resistance materials such as nickel-chromium alloy. They convert electrical energy into heat through the process of resistance which radiates outwards into the oven's interior, causing it to increase the temperature to the desired degree to cook different kinds of foods. When you turn on your oven the heating element starts to produce heat by the high-voltage electricity moving across its metal surface. The element is a coil or ribbon (straight or corrugated) of wire, and when the electric current flows through it, it begins to get hotter. The element will appear red hot when it is at the desired temperature. The baked element is the main source of heat in all oven functions. It's usually found in the bottom of the oven and is used to perform the self-cleaning function in many automatic oven models. When it starts to burn out, you might notice that your oven doesn't preheat as quickly or that your food is not fully cooked. To determine if you have a functioning oven baking element connect your multimeter to its red and black 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 then place your hand on it. If the element feels warm, remove it and try testing it again. If not, remove it and try again. Broil Element The broil element is usually located at the top of your oven cavity and provides high-temperature heat similar to a grill to cook or brown food. The oven's broil setting is a great way to quickly sear meat, crisp vegetables, reheat lasagna or caramelize the top of a casserole. Similar to the bake element the broiler heating element converts electrical energy into heat by the process of resistance. It is comprised of an inner core consisting of metal wires, wrapped in an insulating and expanded product known as perlite. The inner core of the element is then covered with an outer layer of stainless steel to protect the wires against direct contact with the oven. The three-layer structure helps reduce the broil element's temperature making it safer and more efficient than the older designs of elements. While you may use any heating element in your oven, it is important to choose one that is in line with the rated wattage of your oven. A different wattage can cause damage to your oven or cause it overheat. The voltage and current ratings of the new heating elements can be located on the control panel of your oven. This will allow you to examine the power and rating of your oven. Examine the resistance of the previous element, then compare it to the wattage rating of the new element. The higher the resistance, the greater power an oven element uses. Replace your broiler element immediately in the event that it isn't working or is acting up. It is crucial that your oven functions properly to cook all of your favorite foods. If, however, your oven is not working in any way or only intermittently, the issue may lie with another part of your oven. Light Bulb and Assembly The oven light helps you keep an eye on the food cooking without having to open the door to let heat escape. The light will also inform you when the casserole is done. But it's not uncommon for the bulb to fail. This can be very frustrating, but it's a relatively easy fix you can do yourself. Make sure that the breaker isn't tripped and that the connector has three prongs. Remove the old bulb, and then look for the new bulb. It is possible to search online for a replacement that matches the wattage and the type of your oven. Some appliances use standard 40-watt bulbs some require a halogen bulb that is up to 50 watts. You should consider using cotton gloves to shield the halogen bulbs from damage caused by oil. Before you put the new bulb in it is important to first take it out of its glass casing. It is important to do this slowly so that you don't break it. You'll then need to remove the air from the bulb and replace it with an appropriate mixture. best ovens and hobs uk will ensure a longer lifespan for the filament. If your light bulb is constantly going out it could be an electrical issue that requires the assistance of a professional. Make sure you double-check that you're using a correct bulb for your oven and check out your Use and Care Guide for additional troubleshooting suggestions. Also, remember that it's a good idea to unplug your oven and disconnect it from the outlet before you start any repair. This will prevent you from getting an electric shock. Vent Tube The vent tube is an important oven element because it allows for a tiny amount of airflow to be created inside the cavity. This allows the bake element to circulate heat throughout the oven and ensures the temperature is evenly distributed. It also allows the vapors to be released from the oven, and smoke to be drained from the cooking surface. It is necessary for the proper operation of any gas or electric oven. Vents in ovens can get blocked by many factors. Accidental spills and splatters from cooking can leave sticky residues on oven vents, which can draw dust and other debris that can eventually cause obstructions or blockages in the course of time. Oil and grease can also become airborne and build up on vents. Other environmental factors, such as kitchen construction and renovations, could introduce dust or other pollutants into the vents, resulting in obstructions or clogs. Based on the oven model, the vent tube may comprise the bottle guide 20 and spreader 46, as well as fill tip 12 that are integrally constructed with the pipe 32. The bottle guide 20 can have a tapered outer edge that matches the tapered inner edge of the spreader to allow the vent tubes to slide effortlessly into various sizes and shapes of bottle necks. A blocked vent tube may cause a reduction in pressure within the enclosure, which can lead to an updraft that pulls exhaust backwards and then down the vent, causing damage to the oven components. If you suspect that your vent tube is clogged or blocked, contact a professional for help. They will identify the problem and make recommendations on how to remove or clean the vent.