Case Study
Case Study #145 | Another Reason Why Preventive Maintenance Is So Important (Liebert NX 40kVA)
At Nationwide Power, we make it a top priority to educate our customers on their critical power equipment and keep them informed of any maintenance items on the horizon.
In this case study, a customer had regularly scheduled preventive maintenance (PM) for their Liebert NX 40kVA Uninterruptible Power Supply (UPS) system. Recommendations were made that saved the customer both money and possible downtime.
The customer was so impressed with the service and recommendations, he provided the following comment:
“Fantastic job by Darren. This is why everyone should have a maintenance contract in place. Had I not had a contract, then I would not have known I had batteries failing and would have been up a creek if something had happened. Darren explained in detail what needed to be done, and I am thankful you have such a conscientious worker. Hats off once again for his dedication to his job and working with us to ensure we don’t have any issues with our UPS. Thanks Darren.”
| Product | Liebert NX 40kVA |
| Application | Restaurant Equipment Supplier |
| Synopsis | A Critical Power Professional™ (CPP™) conducted regularly scheduled preventive maintenance on the customer’s Liebert NX 40kVA UPS. During the PM, faulty batteries were detected and recommended for replacement. |
| Preliminary Actions |
As part of standard PM protocols, the CPP reviewed alarms and unit performance; recorded measurements for line input/output, bypass, and battery voltages and currents; verified meter calibrations; performed infrared temperature checks; and inspected fans for proper operation. While measuring battery system line voltages, currents, and ohmic values, the CPP identified four weak and/or failing batteries. |
| Resolution | The CPP recommended immediate replacement. Had the failing batteries gone undetected, those batteries could have brought down the entire string and ultimately, the entire UPS system. |
| Root Cause | Through regular routine maintenance, this issue was detected in the very early stages, and as a result, had minimal impact to the customer. |
| Additional Reading |
For a common list of questions to ask when receiving quotes from multiple service providers, visit us at: |
Nationwide Power provides 24/7/365 technical support to ensure that everything operates and transitions successfully before, during, and after any power outage.
Request a quote Call | 800-868-2780 E-Mail
We are your critical power infrastructure partner!
Latest News
Case Study #156 | Importance of Following Age Based Recommendations
Case StudyIn this Nationwide Power™ (NP™) case study, we highlight the importance of following your service provider’s age-based components. The most common age-based components are batteries (every 3-5 years), fans (every 5 years), capacitors (every 5-7 years), and...
Case Study #155 | Knowing Your Infrastructure
Case StudyIn this Nationwide Power™ (NP™) case study, we highlight the importance of knowing what your electrical infrastructure is, and what is supported by your UPS. This case study specifically looks at the Eaton Powerware 9330-15kVA UPS. Product 9330-15kVA UPS...
Case Study #154 | Check Battery Alarm
Case StudyIn this Nationwide Power™ (NP™) case study, we show the importance of regularly scheduled maintenance inspections and replacements of age-based components. This case study focuses specifically on the replacement of batteries on a Best FerrUPS FE18kVA. An...
0 Comments