breakdown gas oven
Breakdown of the asset.
While gas ovens can differ from model to model, they operate on similar principles. First lets explain how a typical gas oven operates and which problems may occur.
A gas oven ignition system consists of three basic components; the oven controls, the igniter and the oven safety valve. In newer models the igniter will be a glow igniter, or in ovens that are a few years old, an electrical igniter. Old ovens may work with a pilot light igniter. In this breakdown we will take the glow igniter as example.
The oven control may be switch based with a thermostat and sensing bulb assembly or an electronic control board that works with an oven sensor. When you select the bake or broil function the control sends 230 volts of alternating current to the appropriate igniter. The igniter is wired to the safety valve and as the igniter starts to get hot it draws an increased current, or amps, thru the valve. Inside the valve is a bimetal arm that reacts to the heat generated by the amps. Once sufficient amps pass thru the valve, the arm flexes and opens, releasing gas into the oven burner tube. The gas travels thru the burner tube until it reaches the bake or broil igniter by this time the igniter is over a 1000 degrees Celsius. So the gas is easily ignited and the appropriate burner will begin to heat. The igniter remains on to keep the safety valve open until the oven reaches the designated cooking temperature. The temperature is monitored by the sensing bulb on the thermostat or by the oven sensor. When the selected temperature is reached the oven control shuts off the voltage to the igniter. The arm inside the safety valve closes shutting off the gas supply to the burner. This cycle repeats throughout the cooking process to maintain the proper temperature. The cooking temperature designated by the control is only an average. The actual temperature will fluctuate throughout the cycle. If any of the ignition system components fail, the oven
While gas ovens can differ from model to model, they operate on similar principles. First lets explain how a typical gas oven operates and which problems may occur.
A gas oven ignition system consists of three basic components; the oven controls, the igniter and the oven safety valve. In newer models the igniter will be a glow igniter, or in ovens that are a few years old, an electrical igniter. Old ovens may work with a pilot light igniter. In this breakdown we will take the glow igniter as example.
The oven control may be switch based with a thermostat and sensing bulb assembly or an electronic control board that works with an oven sensor. When you select the bake or broil function the control sends 230 volts of alternating current to the appropriate igniter. The igniter is wired to the safety valve and as the igniter starts to get hot it draws an increased current, or amps, thru the valve. Inside the valve is a bimetal arm that reacts to the heat generated by the amps. Once sufficient amps pass thru the valve, the arm flexes and opens, releasing gas into the oven burner tube. The gas travels thru the burner tube until it reaches the bake or broil igniter by this time the igniter is over a 1000 degrees Celsius. So the gas is easily ignited and the appropriate burner will begin to heat. The igniter remains on to keep the safety valve open until the oven reaches the designated cooking temperature. The temperature is monitored by the sensing bulb on the thermostat or by the oven sensor. When the selected temperature is reached the oven control shuts off the voltage to the igniter. The arm inside the safety valve closes shutting off the gas supply to the burner. This cycle repeats throughout the cooking process to maintain the proper temperature. The cooking temperature designated by the control is only an average. The actual temperature will fluctuate throughout the cycle. If any of the ignition system components fail, the oven