Maximizing the Longevity of Your Standby Generator

Ensuring the longevity and reliability of a standby generator is essential, especially given its crucial role in keeping people and buildings safe during an emergency. The strongest way to significantly extend their lifespan is through proper maintenance. Here are key factors that affect the longevity of standby generators and best practices to maximize their operational life.

Regular Maintenance and Servicing

Routine maintenance is the cornerstone of generator longevity. This includes:

1. Oil and Filter Changes: Just like any engine, standby generators require regular oil changes and filter replacements. Typically, this should be done after every 100-200 hours of operation, but always refer to the manufacturer’s recommendations.
2. Coolant System Maintenance: Ensuring the coolant system is free from debris and leaks, and the coolant levels are adequate, helps prevent overheating.
3. Battery Inspection: Check and test the batteries regularly to ensure they are holding charge and are free of corrosion. Batteries should be replaced every 2-3 years as a preventive measure.
4. Fuel System Checks: For diesel generators, inspect the fuel system for leaks, sediment, and water contamination. Fuel filters should be replaced annually.

Environmental Factors

The environment where the generator is installed plays a crucial role in its longevity.

1. Location: Install the generator in a well-ventilated area, away from direct sunlight, moisture, and corrosive environments. Enclosed generators should have proper ventilation to prevent overheating.
2. Climate Control: In regions with extreme temperatures, consider climate control solutions such as heating pads for the engine block in cold climates or ventilation enhancements in hot climates.
3. Rodent and Pest Control: Rodents and insects can cause significant damage by chewing through wires and nesting in the generator’s components. Regularly inspect and secure the area to prevent infestations.

Load Management

Proper load management ensures that the generator is neither underloaded nor overloaded, both of which can reduce its lifespan.

1. Regular Load Testing: Perform regular load bank testing to ensure the generator can handle its rated capacity. This also helps burn off carbon deposits and ensures the engine is operating at optimal efficiency.
2. Avoid Light Loading: Running the generator at less than 30% of its rated capacity can cause wet stacking, where unburned fuel accumulates in the exhaust system, leading to decreased efficiency and potential damage.
3. Overloading Prevention: Overloading the generator can cause overheating and mechanical failure. Always monitor the load and ensure it stays within the manufacturer’s recommended limits.

Fuel Quality and Storage 

The quality of the fuel used and how it is stored can greatly impact the generator’s performance and longevity.

1. Fuel Quality: Use high-quality fuel and regularly test it for contamination. For diesel generators, consider fuel additives to prevent microbial growth and stabilize the fuel.
2. Fuel Storage: Store fuel in a cool, dry place, and use tanks that are resistant to corrosion. Regularly inspect fuel tanks for water contamination and sediment buildup.

Exercising the Generator

Regular exercise of the generator keeps the engine and its components lubricated and ensures reliable performance.

1. Exercise Schedule: Most manufacturers recommend running the generator under load for at least 30 minutes every month. This helps keep the engine components in good working order and ensures the generator will perform when needed.

Monitoring and Diagnostics

Modern generators come equipped with advanced monitoring and diagnostic tools that provide real-time data and alerts.

1. Remote Monitoring: Utilize remote monitoring systems to keep track of the generator’s performance and receive alerts for any issues. This allows for proactive maintenance and quick response to potential problems.
2. Diagnostics: Regularly review diagnostic reports to identify and address any minor issues before they escalate into major problems.

Professional Inspections

While routine maintenance can be performed by on-site staff, periodic professional inspections are crucial.

1. Annual Inspections: Schedule annual inspections by certified technicians to thoroughly check all aspects of the generator. These inspections can identify potential issues that might be missed during routine maintenance.

By adhering to these best practices, facility managers can ensure their standby generators operate efficiently and have a long service life. Randy Gross, Duthie Power Services Director of Operations, adds one last consideration, “Don’t overlook the importance of keeping tabs on the availability of parts for your generator. I’ve seen units last decades, but it can get harder to procure replacement parts over time.”

Regular maintenance, proper environmental conditions, load management, fuel quality, regular exercise, monitoring, and professional inspections are all critical factors. Investing time and resources in these areas will pay off in the form of reliable power generation during emergencies and extended equipment lifespan.

For more information on parts, repair services, or annual inspections, request a quote or give us a call at 1-800-899-3931 to learn more about how Duthie can help lengthen the life expectancy of a whole house generator.