[HayZee518]

A typical oil burner for fuel oil or kero uses a cadmium sulphide cell to detect the flame. it is located on the aperture plate just behind the spark electrodes. Once the pump is running and fuel is ejected from the nozzle, the spark is established and continues to spark throughout the burner operation. A flame is detected by the Cd cell and feeds a signal back to the burner relay and lockout circuitry. If a flame isn't detected within a certain time period, the lockout energizes and locks out the burner.
#1 clean or replace the Cd cell. 2. replace the felt filter in the fuel line. 3. Add a water scavenger to the fuel tank - kerosene and fuel oil floats on top of water. If there's water in your tank, bleed off about a gallon of fuel from your tank. the water should go with it and looks like "fat globules" in the fuel oil. The hi limit shuts down the burner if the trunk temperature gets too hot. The blower limit is adjustable and varies the on - off cyclic rate of your blower. The fan control can be automatic or manual - you just pull out on the white knob for manual. and the fan runs all the time. the door switch is a safety device for the burner and pump. The pump is a gear pump and is connected on the same motor shaft as the blower.