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How to Repair Common Oven Parts The oven is a common kitchen appliance used to cook food. The heat generated by the oven sterilizes food items and kills the majority of microorganisms. All bakers need an accurate oven thermometer. Knowing how your oven functions will improve your baking and roasting skills and eliminate those annoying hot spots that can cause havoc with cakes, cookies and other baked products. Thermostat The thermostat is among the most vital components of your oven, helping to ensure that the temperature of your food matches what you've set in your control panel. It can be problematic as is any other switch or sensor that is electro-mechanical. The oven can overheat or underheat, or simply not maintain the temperature you set. The oven thermostat is a small strip made of two different metals bonded together. When heated, the various metals expand and contract at different rates, making or breaking an electrical circuit. When the metal in your thermostat reaches the temperature you set on your control panel it will shut off heating element's power. As the oven cools, the bimetallic strips contract in a circuit, re-establishing it and activating the heating element. This process continues to ensure a constant temperature in 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 zero or close to it, then the thermostat is operating properly and doesn't need to be replaced. If the multimeter fails to read anything then the thermostat is not working properly. It needs to be replaced. Cooker Spare Parts suggests that you replace your thermostat with a thermostat of the same type as the old one. The thermostats are available for purchase at a reasonable price on the internet or in a kitchen goods shop. Bake Element Ovens aren't complete without the bake element which creates heat to make your oven cook food. It's a basic element that converts electricity into the high temperatures needed for baking, roasting, and broiling. Heating elements are typically found in electric ovens and ranges and can be covered or hidden beneath the oven's floor. In general oven heating elements comprise of high-resistance materials like nickel-chromium. They convert electrical energy into heat using resistance. The heat then radiates through the oven's interior to reach the desired temperature to cook various types of food. When you start your oven the heating element gets to work by generating heat from the high-voltage electrical energy that flows across its metallic surface. The element is a ribbon or coil (straight or corrugated) of wire. When the electric current passes through it, it starts to increase in temperature. When the element reaches its desired temperature it starts to be lit up in red hot. The baked element is the main source of heat in most oven functions. It's usually located at the in the bottom of the oven. Many ovens with automatic heating also have it to clean themselves. When it starts to get hot, you might find that your oven isn't able to preheat as quickly or that your food isn't fully cooked. Connect your multimeter to its black and red ports. Then, touch the probes made of metal on one end of the device against each other. Place the other end of the element on one terminal and then place your hand on it. If the element feels warm, remove it and start testing again. If not, take Ovens & Hobs off the element and start testing again. Broil Element The broil element, usually found at the top of the cavity, allows high-temperature temperatures to brown or char the food. The broil setting of your oven is an excellent option for quickly searing meat or vegetables, crisping them up, reheating lasagna, or making caramel on top of the casserole. Similar to the bake element the broiler heating element converts electrical energy into heat via the process of resistance. It consists of an inner core of wires that are wrapped in insulating perlite material. The inner core is then encased in an outer layer of stainless steel to protect the wires from direct contact with the oven. The three-layer structure helps reduce the broil element's temperature which makes it more durable and safer than the older designs of elements. While you can use any baking or broiling heating element in your oven, make sure to select one that is compatible with the wattage rating of your oven. A different wattage could cause damage to your oven or cause it overheat. The voltage and current ratings of the latest heating elements can be located on the control panel of your oven. This will allow you to check the wattage and rating of your oven. Check the resistance of the old element, and compare it with the wattage rating of the new one. The greater the resistance of an oven element the more power it uses. If your broiler's heating element is acting up or doesn't work in any way, you should replace it right away. Your oven must function correctly to be able to cook your favourite meals. If your oven isn't functioning at all, or is only working intermittently, the issue may lie with another part of your oven. Light Bulb and Assembly The light allows you to keep an eye on your food while it cooks without opening the doors and let heat escape. The light also alerts you when your casserole is ready. It's not unusual for the bulb to go. It can be frustrating but you can do it yourself. Before you begin, be sure that the breaker hasn't been 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 search the internet for the right replacement bulb that is compatible with the wattage of your oven. Some ovens use standard 40-watt appliance bulbs, while others require a halogen bulb that is up to 50 watts. Be aware that the oils from your hands can damage the bulb, so you should use cotton gloves when handling it. Before putting the new bulb in place You must first take it out of its glass casing. It is important to do this slowly so that you don't damage it. Then, you'll need to remove the air from the bulb and replace it with the mixture. This will ensure a longer lifespan for the filament. If your bulb is always running out it could be due to an electrical issue that needs an expert to fix it. Make sure you double-check that you're using the right bulb for your oven, and check out your Use and Care Guide for additional troubleshooting suggestions. And remember that it's always an excellent idea to unplug your oven and disconnect it from the outlet before you begin any repair. This will protect you from electric shock. Vent Tube The vent tube is an essential oven part as it allows for a tiny amount of airflow to flow within 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 crucial for the proper operation of any electric or gas oven. Vents for ovens can become blocked or blocked due to several factors. Accidental spills or splatters can leave sticky residues in oven vents. These can attract dust, debris and other contaminants that can cause blockages over time. Grease and oil may also become airborne and then settle on vents. Other environmental factors, like kitchen construction and renovations, can introduce dust or other pollutants into the vents, resulting in blockages or clogs. Depending on the oven model the vent tube could comprise the bottle guide 20 and spreader 46, as well as fill tip 12 that are formed with the pipe 32. The bottle guide 20 may have a tapered edge that complements the tapered inside edge of the spreader to allow the vent tubes to slide easily into different sizes and shapes bottle necks. A blocked vent tube may cause a reduction in pressure within the enclosure, which can cause an exhaust downdraft, which pulls the exhaust backwards and down the vent, damaging the oven's components. If you suspect that the vent tube in your oven is clogged or blocked, consult an expert for assistance. They will determine the cause and give suggestions for clearing or cleaning the vent.