10 Questions
What could happen if the low atomizing medium cut-off switch is defective or improperly adjusted?
The burner may not extinguish before flame failure occurs.
What is a common reason for flame scanners to fail sooner than their expected lifespan of 40,000 hours?
Exposure to high temperature
What should be checked during annual burner maintenance in relation to flame rods?
Warpage and alignment
What can cause ceramic insulators to fail and short out the flame rod?
Warping
In the case of repeated flame failures, what could be a potential issue if all normal operating parameters are met?
Defective programmed combustion control or flame amplifier
What should be done immediately if an FD fan fails and the combustion air proving switch does not shut down the burner?
Close the FD fan damper
Why is it important to thoroughly purge the furnace after repairing an FD fan and ensuring the combustion air proving switch operates correctly?
To sweep carbon monoxide and unburned fuel
What action is recommended if there is a failure of the electric motor in an FD fan?
Replace the forced draft fan
What is a potential consequence of inadequate atomizing medium pressure for air or steam-atomized burners?
Poor quality flames
What is an expected lifespan for UV scanners before they need replacement?
40 000 hours
Learn about the procedures to follow when a flame failure occurs in a boiler, including shutting off valves, investigating the cause, and testing flame safeguard controls. Understand the importance of safety protocols and maintenance in boiler operations.
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