When an industrial boiler is in operation, its built-in alarm system monitors the equipment\u2019s operating status in real time. If an anomaly occurs, an alarm signal is triggered to alert operators to take prompt action. Many operators panic when an alarm sounds, unsure of the cause or how to respond. Below is a summary of common boiler alarm causes and their solutions\u2014be sure to save this for future reference.<\/p>\n
Alarm 1: High-Pressure Alarm (Most Common). Causes: Safety valve malfunction, inaccurate pressure gauge, excessive fuel combustion, poor circulation, etc. Solution: Immediately shut off the fuel supply and stop combustion; open the safety valve or relief valve to slowly relieve pressure. Once the pressure drops to the normal range, investigate the cause and take corrective action\u2014repair the safety valve, calibrate the pressure gauge, adjust the combustion settings, or clear any blockages in the circulation lines. After the fault is resolved, reset the alarm and restart the boiler.<\/p>\n
Alarm 2: Low Pressure Alarm. Causes: Pipeline leaks, excessive blowdown, feed pump failure, incomplete fuel combustion, etc. Remedial Action: Inspect the pipelines for leaks and repair any seals promptly; close the blowdown valve to stop blowdown; inspect the feed pump, repair any faults, and promptly replenish the working fluid (water or heat transfer oil); adjust the combustion settings to ensure complete fuel combustion and improve energy efficiency. Once the pressure returns to normal, reset the alarm.<\/p>\n
Alarm 3: High Water Level Alarm (Steam Boilers Only). Causes: Feedwater pump failure, damaged feedwater valve, operator error (excessive water replenishment), water level gauge failure, etc. Remedial Action: Immediately shut off the feedwater pump and feedwater valves to stop water replenishment; open the blowdown valve to slowly drain excess water while closely monitoring water level changes; close the blowdown valve once the water level returns to the normal range; identify the cause of the malfunction, repair the feedwater pump or feedwater valves, or calibrate the water level gauge, then reset the alarm.<\/p>\n
Alarm 4: Low Water Level Alarm (Steam Boilers Only). Causes: Pipe leaks, excessive blowdown, feed pump failure, water level gauge malfunction, etc. Remedial Action: Immediately shut down the boiler and stop the fuel supply; assess the severity of the water shortage\u2014if minor, slowly replenish with softened water; if severe, do not add water under any circumstances; identify the cause of the fault, repair the leak, fix the feed pump, or calibrate the water level gauge; after the fault is resolved, reset the alarm and restart the boiler.<\/p>\n
Alarm 5: Over-Temperature Alarm. Causes: Poor circulation, excessive fuel combustion, thermostat malfunction, degraded heat transfer oil (for heat transfer oil boilers), etc. Remedial Action: Immediately reduce the fuel supply and adjust the combustion conditions; inspect the circulation system, clear blockages in the pipes, and repair the circulation pump to ensure smooth circulation; inspect the thermostat and calibrate or replace any faulty thermostats; For thermal oil boilers, check the condition of the thermal oil; if it has deteriorated, replace it promptly. Once the temperature returns to normal, reset the alarm.<\/p>\n
Alarm 6: Gas Leak Alarm (specific to gas-fired boilers). Causes: Gas pipeline leaks, damaged gas valves, aged seals, etc. Action: Immediately shut off the main gas valve to stop the gas supply; strictly avoid turning on or off any electrical appliances or using open flames; open doors and windows to ventilate the area; Evacuate personnel to a safe area, locate the leak, and repair the fault. After ventilation for a period of time, reset the alarm and restart the boiler.<\/p>\n
Alarm 7: Fan Failure Alarm. Causes: Blower or induced draft fan motor failure, impeller jamming, power supply failure, etc. Action: Immediately shut down the boiler and cut off power to the fan; troubleshoot the fan failure, clear debris from the impeller, and repair the motor or power supply to ensure normal fan operation; after the fault is resolved, reset the alarm and restart the boiler.<\/p>\n
Note: When an alarm signal occurs, remain calm and follow the principle of \u201cshut down the boiler first, investigate the cause, then address the issue.\u201d Never ignore an alarm or force the boiler to continue operating. If the fault cannot be diagnosed, contact professional maintenance personnel promptly to prevent the problem from escalating.<\/p>","protected":false},"excerpt":{"rendered":"
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