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How to Repair Common Oven Parts Oven is a common kitchen appliance used to cook food. The heat from the oven sterilizes food items and kills the majority of microorganisms. Every baker needs an accurate oven thermometer. Understanding how your oven works can help you improve your baking and roasting abilities and eliminate those irritated hot spots that wreak havoc with cakes, cookies and other baked items. Thermostat The thermostat is a crucial part of your oven. It is used to ensure that the temperature of food matches the temperature that 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 not maintain the temperature you set. The oven thermostat is essentially a small strip of two different metals joined. When heated the various metals expand and contract at different rates, forming or breaking an electrical circuit. When the metal in the thermostat is at the temperature you've set on your control panel, it turns off the heating element's power. When the oven cools down, the bimetallic strip contracts in a way, reestablishing the circuit and turning on the heating element. This cycle is repeated continuously to ensure that the oven remains at a constant temperature. To diagnose a problem with the thermostat you'll need to disconnect the oven and verify that all screws that hold it in place have been removed. If you have a multimeter (which is a tool that detects electrical current), set it to the ohms setting, and then test the thermostat. If the multimeter reads 0 or very close to it, then the thermostat is working correctly and doesn't need to be replaced. If the multimeter does not read anything, it's likely that the thermostat is faulty and requires replacement. Cooker Spare Parts recommends that you replace the thermostat with a fresh one of the same type as your old one. The thermostats are sold at a reasonable price on the internet or in the kitchen store. Bake Element The bake element is vital to the operation of your oven. It produces heat that lets it cook food. It's an easy component that transforms electricity into high temperatures for baking, roasting and broiling. Heating elements are commonly found in electric ranges and ovens, and they can be covered or hidden beneath the floor of the oven. In general, oven heating elements consist of high-resistance elements like nickel-chromium. They convert electrical energy into heat by the process of resistance which then radiates through the oven's interior to raise the temperature to the desired level to cook various types of food items. When you turn on your oven the heating element starts to generate heat by the high-voltage electricity moving across its metal surface. When electric current is flowing through it, the element heats up. The element will turn red hot when it is at the desired temperature. The baked element is the primary source of heat for most oven functions. It is typically located at the in the bottom of the oven. A lot of ovens that are automated also utilize it to clean themselves. If it starts to burn out, you might notice that your oven doesn't preheat as quickly or that your food isn't fully cooked. To check for a working oven baking element, plug your multimeter into its red and black ports, then rub the probes made of metal against each other on the opposite side of your element. Place the other end against one of its terminals, and then place your hands on it to determine whether the baking element is warm to the contact. If it's not, remove the element and start testing again. Broil Element The broil element, which is usually located on the top of your cavity provides high heat to brown or char food items. The broil setting of your oven is a great choice for quickly searing meat and vegetables, crisping up vegetables, warming lasagna, or caramelizing the top of the casserole. The broiler heating element has a similarity to the bake element in that it converts electrical energy via resistance into heat. It is made up of an internal core of wires made of metal wrapped in insulating expanded perlite product. The inner core is encased in an outer layer of stainless steel, which protects the wires from direct contact with the oven. The three-layer structure helps lower the temperature of the broil element which makes it more secure and efficient than the older designs of elements. You can use any heating element you want to use for baking or broiling in your oven. But, ovens hobs must choose one that is in line with your oven's rated wattage. Utilizing a different wattage may cause damage to your oven or cause it to overheat. The current and voltage ratings of the new heating elements can be found 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 output of your new broiler heating element. The greater the resistance, the more power an oven element uses. If your broiler heating element is acting up or doesn't work at all, you should replace it as soon as possible. It is crucial for your oven to function properly to cook your most loved food items. If your oven isn't functioning in any way or only intermittently, the issue may be with a different part of your oven. Light Bulb and Assembly The light lets you monitor your food while it cooks without opening the doors and let the heat escape. The light will also notify you when the casserole is finished. It's not unusual for the bulb to die. It can be frustrating but you can fix it yourself. Check that the breaker isn't tripped and that the connector has three prongs. First, take out the old light bulb and then locate the new one. You may have to search the internet to find the correct replacement bulb that is compatible with the wattage of your oven. Some ovens use standard 40-watt appliance bulbs, while others require halogen bulbs up to 50 watts. Be aware that the oil in your hands can cause damage to the bulb, so you should use cotton gloves when handling it. Remove the glass casing of the bulb before you replace it. You should do slowly to avoid breaking it. You'll have to remove the air from the bulb and replace it with an appropriate mixture. This will ensure a longer filament life. If your bulb keeps running out it could be due to an electrical issue that requires an expert to fix it. Double check that you are using the correct oven bulb and check your Use and Care Guide to get more troubleshooting advice. Also, remember that it's a good idea to unplug your oven and disconnect the power from the outlet prior to you begin any repair. This will help protect you from electrical shock. Vent Tube The vent tube is a crucial oven part as it allows for a small amount of airflow to flow inside the cavity. This allows the bake-element to circulate heat throughout the oven, ensuring that the temperature is distributed evenly. It also allows the vapors to be released from the oven, and smoke to be drained from the cooking surface. It is crucial for the proper operation of any gas or electric oven. Vents in ovens can get blocked or blocked due to several factors. Accidental spills and splatters during cooking can leave sticky residues on oven vents, which could draw dust and other debris that could eventually cause obstructions or blockages in the course of time. Oil and grease can also become airborne and build up around vents. Other environmental factors, such as kitchen renovations and construction work could introduce dust or other pollutants into the vents, resulting in clogs or blockages. Based on the model of the oven the vent tube may include a spreader, the fill tip 12, and the bottle guide 20 which are incorporated into the pipe 32. For instance, the bottle guide 20 may have a tapered outer surface that compliments the complementarily tapered inner surface of the spreader 46, allowing the vent tube to be easily fitted into various sizes and shapes of bottle necks. A blocked or clogged vent tube can cause an increase in pressure within the enclosing structure. This can create a downdraft situation that pushes exhaust down the vent and backwards towards the oven burners, causing damage to oven components. Consult a professional if think your vent pipe might be blocked or clogged. They will determine the cause and offer suggestions on how to remove or clean the vent.