How are oil burner transformers maintained for reliable ignition?

Oil burner transformers are maintained through regular inspection of electrical connections, insulation integrity, and output voltage stability. Technicians check for cracks, carbon tracking, moisture ingress, and overheating. Spark gap alignment and electrode condition are also verified. Periodic testing ensures the transformer delivers sufficient voltage for ignition. Preventive replacement is common because declining transformer performance can lead to ignition failure, misfires, and increased burner downtime.