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How to Repair Common Oven Parts Oven is an appliance in the kitchen that is used to cook food. The heat from the oven sterilizes food items and kills most of the micro-organisms present in them. All bakers require an accurate oven thermometer. Understanding how your oven works will improve your baking and roasting abilities and eliminate those frustrating hot spots that can cause havoc with cookies, cakes and other baked items. Thermostat The thermostat is a crucial part of your oven. It helps to ensure that the temperature of food is in line with the temperature you set on the control panel. It can be problematic, just like any other switch or sensor that is electro-mechanical. The oven can overheat or underheat, or simply not maintain the temperature you have set. The oven thermostat is tiny strips of two different metals that are bonded. When heated to a certain temperature, the two metals expand or bend at different rates. This creates an electrical circuit. When the metal in your thermostat reaches the temperature you set on your control panel, it will turn off the heating element's power. As the oven cools down the bimetallic strip contract to re-establish the circuit before activating the heating element. This cycle is repeated continuously to ensure a constant oven temperature. To determine if there is a problem with the thermostat you'll need to unplug the oven and ensure that all of the screws that hold it in place have been removed. Set your multimeter to the Ohms setting and then test the thermostat. If the multimeter reads 0 or very close to it the thermostat is working correctly and doesn't need to be replaced. If the multimeter doesn't detect anything then the thermostat is not working properly. It needs to be replaced. Cooker Spare Parts recommends that you replace the thermostat with a new one of the same kind as the one you have. They are available online or at the kitchen store, and can be bought at a reasonable price. Bake Element Ovens are not complete without the bake element which provides heat to make your oven cook food. It's a small element that converts electricity into the high temperatures required for baking, roasting and broiling. Electric ovens and ranges typically have heating elements, which can be either exposed or hidden under the floor. Generally, oven heating elements are made from high-resistance materials like nickel-chromium alloy. They work by converting electrical energy into heat through the process of resistance, which then radiates throughout the oven interior to raise the temperature to the desired temperature to cook different kinds of food. When you turn on the oven the heating elements begin to generate heat by the high-voltage current flowing across the metal's surface. The element is a coil or ribbon (straight or corrugated) of wire. When best ovens and hobs through it, it starts to get hotter. The element will turn red hot when it reaches the desired temperature. The baked element is the primary source of heat in most oven functions. It is usually located at in the bottom of the oven. A lot of ovens that are automated also have it to clean themselves. When it begins to get hot you may notice that your oven doesn't preheat as quickly or that your food isn't fully cooked. Plug go source in to its black and red ports. Then, press the metal probes on one side of the element against each other. Place the other end of the element against one terminal and then place your hand on it. If the element feels warm, remove it and start testing again. If not, take it off and try again. Broil Element The broil element, typically located at the top of the cavity, provides high temperatures to brown or char the food. Broil settings in ovens are a great way to quickly cook meat or crisp vegetables, to heat up lasagna or caramelize the topping of a casserole. The broiler heating element is similar to the bake element in that it converts electrical energy via resistance into heat. It is comprised of an inner core comprised of metal wires, wrapped in an insulating, expanded material called perlite. The inside 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 design can help reduce the temperature of the broil element, making it safer than the older models. You can use any heating element to bake or broiling in your oven. But, you must select one that matches the wattage that your oven is rated for. A different wattage could harm 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 will allow you to examine the wattage and rating of your oven. It is also advisable to check the resistance of your previous element and compare it with the power output of your new broiler heating element. The greater the resistance, the more the power that an oven element draws from. Replace the element in your broiler immediately in the event that it isn't working or if it is acting up. Your oven must function correctly to be able to cook your favorite meals. If your oven is not working in any way or only intermittently, the issue may be in a different area of your oven. Light Bulb and Assembly The light lets you keep an eye on your food as it cooks without opening the doors and letting heat escape. The light also alerts you when your casserole is ready. It's not uncommon for the bulb to go. This can be frustrating, but it's a relatively easy repair that you can tackle yourself. Before you begin, be sure that the breaker hasn't been tripped and that the three-prong connector is in good condition. Remove the old bulb and then locate the new one. It is possible to search online to find the correct replacement bulb that matches your oven's wattage. Some appliances use standard 40-watt bulbs some require a halogen bulb up to 50 watts. Be aware that the oil in your hands can damage the halogen bulb, so consider using cotton gloves when handling it. Before putting the new bulb in You must first take it out of its glass casing. It's important to do this slowly so that you don't break it. Then, you'll need to remove the air from the bulb and fill it with gas mixture. This will ensure a longer lifespan for the filament. If your light bulb is constantly going out it could be due to an electrical issue that needs the assistance of a professional. Be sure to double check that you're using the right bulb for your oven and consult your Use and Care Guide for additional troubleshooting suggestions. And remember that it's always recommended to unplug your oven and disconnect the power from the outlet before you start any repair. This will keep you from getting an electric shock. Vent Tube The vent tube is an essential oven part that allows for a tiny airflow inside 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 be released from the oven, and smoke to be drawn from the cooking surface. It is essential to ensure the proper operation of any gas or electric oven. Vents for ovens can become blocked by a variety of 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. Grease and oil particles may be blown into the air and settle around the vents, and vice versa. Other environmental factors such as kitchen and construction work can introduce dust into the vents. This can lead to clogs. Based on the type of the oven, the vent tube can include a spreader 46, an fill tip 12 and an a bottle guide 20 that are incorporated into the pipe 32. The bottle guide 20 could have a tapered edge that is complemented by the tapered inner edge of the spreader. This allows the vent tubes to be inserted smoothly into different sizes and shapes of bottle necks. A blocked or clogged vent tube can cause an increase in pressure within the enclosing structure. This could result in a downdraft that pulls exhaust down the vent and backwards through the oven burners, causing damage to the oven components. If you suspect that the vent tube in your oven is clogged or blocked, consult a professional for help. They will diagnose the issue and provide suggestions on how to clear or clean the vent.