Red Seal Oil Heat System Technician Practice Questions - Red Seal Oil Heat System Technician (Interprovincial) Exam

Before working on the electrical components of an oil burner primary control, the technician should first:

Increase the pump pressure to 200 psi Lock out and de-energize the circuit supplying the appliance Open the barometric damper fully Replace the nozzle

Correct Answer:

Lock out and de-energize the circuit supplying the appliance

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