Pre-Startup Safety Checks
Before starting an industrial burner, operators must verify that all safety devices are functioning correctly. Check the gas supply pressure to ensure it falls within the specified operating range. Inspect the combustion air supply system for obstructions and verify adequate airflow. Confirm that all gas shut-off valves operate properly and close completely when de-energized. Test the flame detection system by simulating flame failure to ensure the burner shuts down within the specified time limit.
Runtime Monitoring Parameters
During operation, continuously monitor key parameters including combustion air pressure, gas supply pressure, and exhaust gas temperature. The burner combustion air pressure must be tested to verify that the pressure meets safe combustion requirements. Gas test port pressure should be tested and calibrated to the value specified in the product manual to ensure stable gas supply pressure. Any deviation from normal operating parameters requires immediate investigation and corrective action.
Shutdown Procedures
Proper shutdown procedures are critical for safety and equipment longevity. Follow the manufacturer recommended sequence for shutting down the burner. After the main flame is extinguished, perform a post-purge cycle to clear any residual unburned gas from the combustion chamber and flue. Verify that the main gas shut-off valve closes completely and that no gas leakage occurs during the standby condition. The gas pipeline pressure reducing valve should be checked for normal operation and diaphragm working condition to ensure stable downstream gas pressure.
Common Fault Troubleshooting
Ignition failure is one of the most common burner faults. Check the ignition transformer for proper output voltage, inspect the ignition electrode for carbon buildup or damage, and verify the gas supply pressure is within the ignition range. Flame failure during operation may be caused by a dirty flame detector, unstable gas pressure, or insufficient combustion air. Check the flame detector surface for carbon deposits and clean if necessary. Unstable flame or fluctuating fire may indicate improper air-fuel ratio adjustment, requiring recalibration of the gas flow regulating valve and air damper position.
Preventive Maintenance Best Practices
Establish a documented maintenance schedule with clear responsibilities and deadlines. Keep detailed records of all inspections, repairs, and component replacements. Train operators to recognize early warning signs of potential problems such as unusual flame patterns, abnormal sounds, or fluctuating pressure readings. Stock critical spare parts including ignition electrodes, flame detectors, solenoid valve coils, and gas filters to minimize downtime when repairs are needed.
