**Technical Articles on Fume Hoods**
In daily operations, it is common for a generator set to fail to start, which can prevent the use of critical equipment. The most frequent causes of this issue include:
1. **Battery Failure**: If the diesel engine rotates slowly or not at all when the start button is pressed, the battery should be checked immediately. Use a multimeter to confirm that the battery voltage reaches the rated DC 24V (for Jiangsu Starlight diesel generators). When the generator is in automatic mode, the ECM (Electronic Control Module) relies on battery power. If the external charger fails or the battery self-discharges, voltage drops may occur. In such cases, the battery must be charged or replaced if necessary. It's recommended to install an automatic charger to maintain consistent voltage. Weekly voltage checks are also essential. For wet batteries, check and top up the electrolyte level between the minimum and maximum marks to avoid undercharging or overflow during charging.
The chemical reaction in lead-acid batteries is:
$$
\text{PbO}_2 + 2\text{H}_2\text{SO}_4 + \text{Pb} \rightarrow 2\text{PbSO}_4 + 2\text{H}_2\text{O}
$$
During charging, water decomposes into oxygen and hydrogen, which is why regular maintenance with acid and water is required.
2. **Poor Battery Terminal Contact**: Overfilling the battery with electrolyte can cause leakage and corrosion on the terminals, increasing resistance. Clean the terminals and tighten the connections to ensure good contact. Applying grease can help prevent future corrosion.
3. **Starter Motor Issues**: Loose wiring from vibration can lead to poor contact, preventing the generator from starting. If the starter motor does not turn or becomes excessively hot, it may be damaged and require replacement.
4. **Fuel System Problems**: Air in the fuel system, often due to improper filter replacement, can reduce fuel pressure and prevent the engine from starting. Bleeding the system or using a manual pump may resolve the issue. Fuel line blockages, such as clogged nozzles, should also be cleared.
5. **Air Intake System Malfunction**: A dirty air filter can restrict airflow, leading to failure to start. Regular cleaning or replacement of the air filter is necessary.
**No Output Voltage**: This is another common fault. Causes include rectifier failure, which prevents both voltage output and frequency display. Replacing the rectifier is usually required. If the generator coil is burned, it may emit a burning smell and show zero or infinite resistance on a multimeter, requiring repair or replacement. A faulty output switch may also be the cause, and replacing it can resolve the issue.
**Oil Leaks**: Oil leaks from the diesel engine casing are often due to damaged gaskets or improperly tightened screws. Replacing gaskets or tightening bolts correctly—following a diagonal order and pre-tightening—can fix this problem.
**Daily Management of Generator Sets**: Routine maintenance is crucial. Establishing proper procedures ensures preparedness for emergencies. Key steps include locking the generator room, training staff on basic operations, monitoring fuel and coolant levels, setting the generator to automatic mode, conducting weekly no-load tests, and inspecting the unit after operation. Maintaining clean and ventilated rooms, avoiding flammable materials, and checking fire safety equipment are also important.
Standardized records, such as daily inspections, operation logs, and maintenance reports, help track performance and identify potential issues early. By following these practices, generator reliability is improved, reducing downtime and ensuring continuous power supply during outages.
Proper management and maintenance are essential for the safe and efficient operation of generator sets, especially as backup power sources in modern life and industry.
Mianyang Shengshi Health Technology Co.,Ltd , https://www.shengshiaminoacid.com