The Essential Guide to Automatic Transfer Switch (ATS) Maintenance for Commercial Generator Owners
As a commercial generator owner, ensuring the reliability of your power system is crucial for the smooth operation of your business or household. A key component of this system is the Automatic Transfer Switch (ATS). The ATS is responsible for automatically transferring the power load from the utility to the generator in the event of a power outage and back to the utility once power is restored. Proper maintenance of the ATS is essential to ensure it functions correctly when needed. Check out the Duthie Power video above, featuring Generator Technician Steve Saari. And read below for a comprehensive guide to the elements of ATS maintenance:
Regular Visual Inspections & Cleaning
When servicing an Automatic Transfer Switch, visual inspections are the first line of defense. Look for any obvious signs of wear, corrosion, or damage. Telltale signs of wear and tear are loose connections, discoloration, or any signs of overheating. Regular inspections can help you catch small issues before they turn into significant problems.
Johnny Bradford, Duthie Power’s Safety and Quality Assurance Manager, adds, “Loose connections can usually be fixed with a quick tightening. In general, we want to make sure that there is no binding and everything works as expected.”
Cleaning and lubrication are also crucial. Dust, dirt, and grime can accumulate on the ATS components, leading to poor performance or failure. Regular cleaning with appropriate cleaning agents will ensure that all parts are free of debris. Any moving parts should also be adequately lubricated as recommended by the manufacturer to ensure smooth operation.
Electrical Testing & Battery Maintenance
Conducting regular electrical tests is vital to ensure the ATS is operating correctly. This includes voltage checks to ensure that the voltage levels are within the manufacturer’s specified range, transfer tests to simulate a power outage and check if the ATS correctly transfers the load to the generator and back to the utility, and insulation resistance tests to measure the insulation resistance of the wiring and components to detect any potential breakdowns. Finally, time delay checks confirm that the ATS will transfer power as expected during an emergency.
The ATS often relies on batteries for control and monitoring functions which makes battery maintenance another important step in ATS maintenance. Regularly check and maintain the batteries by inspecting battery terminals to ensure they are clean and free of corrosion, checking battery voltage to make sure it is within the recommended range, and replacing batteries as per the manufacturer’s guidelines.
Mechanical Testing & Calibration
Mechanical testing involves physically operating the switch to ensure it moves freely and correctly. This includes checking the manual transfer handle and regularly operating the ATS under load to ensure all components are functioning properly. Duthie Power Generator Tech Steve Saari adds, “All transfer switches are different. Generally a relay or coil may burn and that could be due to a micro switch that gets stuck from idle/non-use.” Over time, the ATS components may drift from their original settings. Regular calibration ensures that the ATS operates within the manufacturer’s specifications. This might require professional service, but it is crucial for maintaining the reliability of the switch.
As with all modern technology, many ATS units come with software and firmware that need regular updates to ensure optimal performance and security. Check for updates from the manufacturer and install them as needed. Software updates not only protect your unit from a cybersecurity perspective but also keep important functions up-to-date with the latest upgrades to a system.
Professional Inspection & Documentation
While regular in-house maintenance is important, having a professional inspection at least annually is advisable. A certified technician can perform in-depth checks, identify potential issues, and carry out complex maintenance tasks that may be beyond the scope of routine checks.
Finally, keep detailed records of all maintenance activities, including inspections, tests, repairs, and replacements. Documentation helps in tracking the performance of the ATS over time and is invaluable during troubleshooting or when making warranty claims.
Conclusion
An annual transfer switch service test will give you peace of mind it will work every time. Regular and thorough maintenance of your Automatic Transfer Switch is essential for the reliability and efficiency of your commercial power system. By following these maintenance steps, you can ensure that your ATS will function correctly when you need it most, minimizing downtime and protecting your business operations. Invest in proper ATS maintenance today to safeguard your business against unexpected power disruptions.
For further guidance or professional assistance, feel free to request a quote or give us a call at 1-800-899-3931. We are here to help you keep your power systems running smoothly and efficiently.
