Oil Burner Components ID Questions
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Burner Blower - ANSWER✔✔This component has a squirrel cage design and
provides a way to regulate the amount of air entering the blower. It forces air in the
combustion chamber through the air tube where it gets mixed with atomized oil for
combustion purposes. Too little air in the combustion area would cause poor
combustion, so the blower must be cleaned periodically.
Burner Motor - ANSWER✔✔This component is responsible for applying
rotational force to the blower and the fuel pump of the oil burner. The motor
speeds can either be 1750 or 3450 rpm; most modern burners use the 3450 rpm
motors. The most common type of motor for oiler burners is the permanent split-
capacitor, which is efficient and long-lasting. Although they have low starting
torque, they are great for oil burners because they wouldn't experience too many
high load conditions.
CAD Cell Relay - ANSWER✔✔This component can be found on all modern oil
burners. It's made from a chemical called cadmium sulfide, which changes its
resistance depending on the number of photons that hit it. It senses the light
produced by the combustion of the burner oil in the combustion area.
Electrodes - ANSWER✔✔These are ceramically insulated conductors that use a
high-voltage spark to vaporize atomized oil droplets and ignite the vaporized air
and oil mixture. The high voltage comes from a source such as an ignition
transformer. These components are typically positioned close to the nozzle of the
burner for proper ignition. The two types of ignition are interrupted ignition and
intermittent ignition. Interrupted ignition causes the electrodes to spark only at the
start of the burner's run cycle. Intermittent cause the spark to appear periodically
during the burner's operation.
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