Why Generator Maintenance Matters
Over time, your generator can develop issues that could prevent it from operating in an emergency. Scheduling regular service with GenServe can help you to address these and other issues that could affect the performance and operation of your commercial generators.
At GenServe, we consider generator maintenance the most important thing we offer. Our technicians are trained to conduct a 105-point inspection of your system and perform maintenance in adherence with NFPA 110 guidelines. This enables us to make the best recommendations for your system and keep it in compliance with local code requirements.
Learn more about our maintenance below, or explore our upgrades to maximize the efficiency of your backup power source.
Commercial Generator Maintenance Types

Coolant System Service

Electrical Checks

Building Load Tests
Preventative Maintenance / Service Plans (Yearly, Semi-Annual, Quarterly & Custom)
• Minor Service:
Performed as needed (monthly, quarterly or semi-annually). Depending on the industry and type of facility being operated.
The minor service covers the following important checks and inspections:
• Air Filter
• Cooling System
• Fan Belts
• Block Heater
• Flex Connections
• Mountings
• Battery
• Battery Charger
• Governor Linkage
• Louvers
• Fittings
• Engine Oil
• Day Tank
• Fuel System
• Light Bulbs
• Coolant, Oil, Fuel or Exhaust Leaks
• Building Load Test:
Performed as needed (monthly, quarterly or semi-annually). Depending on the industry and type of facility being operated.
The technician will manually shut off utility power to the facility signaling the transfer switch to run the generator automatically testing operation during an emergency.
• Major Service:
Typically performed annually or as operating hours require it. This service includes everything covered by the minor service and a complete change of lubricating oil and oil filters with spark plug and coil inspection.
• Load Bank Test:
Performed as needed (typically yearly or every three years).
A load bank can be used to test the system’s ability to generate power and maintain voltage and current levels within specified limits verifying that the system is capable of supplying the power required to run a business or facility during an emergency.
Transfer Switch Maintenance Helps Keep the Power On
Generator Fuel Polishing and Maintenance
Over time contaminants and sludge build up in the fuel tank of your backup power system. This foreign matter can clog filters, reduce engine performance, create carbon deposits, cause incomplete combustion and loss of power, and simply wear down fuel system components.
Fuel polishing removes these contaminants from the bottom of the tank and adds a fuel catalyst. The fuel is then circulated through a fuel conditioner and a series of filters that will clean and restore the fuel to a clear and bright condition — saving you fuel costs and ensuring the generator engine will operate efficiently at a moment’s notice.
AquaFighter: GenServe’s Fuel Maintenance Solution
Aquafighter® is, by a wide margin; the most effective, efficient, affordable and green solution for, preserving fuel quality and maintaining a clean tank at all times for continuous-use generators as well as intermittent-use back-up generators.
Uninterruptible Power Supply Services
Proper maintenance of the UPS and the generator, which act together as the heart of your emergency power backup system, keep power pumping through your buildings without a flicker.
GenServe can provide UPS Service as a part of any maintenance package.
Backup Commercial Generator Load Bank Testing
You don’t want to find out that your backup generator cannot handle the electrical load of your facility when you try to use it in an emergency. Through load bank testing, we can test your backup generator’s capabilities and make sure it will be prepared to handle the full force of your facility’s energy needs when needed.