866-204-3706 info@nationwidepower.com CUSTOMER SUPPORT Services Products Resources Reviews REQUEST QUOTE CASE STUDY Case Study #151 | The Cost Of Deferred Maintenance Nov 10, 2021 | Case Study In this Nationwide Power™ Case Study, we show the importance of performing preventive maintenance and completing recommendations. This case study is about a Mitsubishi 9900A 150kVA UPS. After several attempts over the course of many months trying to schedule the first major preventive maintenance inspection (PM), a new customer finally responded by placing an emergency call indicating that there was smoke coming from their uninterruptible power supply (UPS). Product Mitsubishi 9900A 150kVA UPS Application Communications/Technology Synopsis The customer was notified by the original equipment manufacturer (OEM) of an AC capacitor recall, which was covered under warranty at no cost. For over a year, the customer did not respond to the OEM to take corrective action, and as a result the AC capacitors failed. This caused smoke, damage, and forced the UPS into bypass, putting their critical load at risk to downtime. Preliminary Actions A Critical Power Professional™ (CPP™) was dispatched to the site for the first time since this was a new customer. Upon arrival, the CPP found the UPS against a wall with no rear access and was unable to remove the rear panels for proper inspection. The customer was notified that the UPS requires three feet of rear clearance and the CPP returned two days later, after rear access clearance had been provided. Resolution After the customer cut the wall open behind the UPS for access, the CPP was able to remove the rear panels where a visual inspection presented damage to 3 of the 4 capacitor assemblies. The CPP then shut the UPS down with the load on maintenance bypass. The OEM was onsite two days later and replaced the recalled capacitors, followed by the CPP performing the major PM. Root Cause Often, businesses choose to defer maintenance for a variety of reasons. In this case study, a deferred recall preceded a PM that may have identified the failing capacitors and avoided an outage. Additionally, the UPS was installed with no rear access, significantly increasing the time to repair. Fortunately, the section of wall that needed to be removed was not a block or exterior wall. In this scenario, it is reasonable to expect that the customer would have avoided all the risk for downtime and costs of having a unit on bypass had the recall been performed. Additionally, the failing capacitors and lack of rear access that hindered the repair would have been identified sooner had Nationwide Power been allowed to perform the major PM. Additional Reading https://nationwidepower.com/news/case-study-150-the-importance-of-prevention https://nationwidepower.com/news/case-study-145-another-reason-why-preventive-maintenance-is-so-important-liebert-nx-40kva/ 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 | 866-204-3706 E-MAIL We are your critical power infrastructure partner! Latest News Case Study #150 | The Importance of Prevention Jul 8, 2021 Case Study #149 | The Additional Hidden Costs of Choosing the Lowest Price Apr 15, 2021 Case Study #148 | The Cost of Deferred Maintenance Mar 9, 2021 Newsletter Signup Sign up below to stay informed with latest industry trends, products, and news. First Name Last Name E-Mail Name SUBMIT send Submit a Comment Your email address will not be published. Required fields are marked * Save my name, email, and website in this browser for the next time I comment. Submit Comment Solutions Services Preventive Maintenance Proactive maintenance to verify equipment is operating properly Emergency Service Covers all of the critical components with emergency response UPS Batteries Maintenance and replacement to help minimize downtime and maximize value UPS Design & Site Survey We offer a wide variety of services to meet your critical infrastructure needs Products All Products We have the right hardware for any critical infrastructure requirement Follow LinkedIn Facebook Twitter YouTube Question? Our UPS Design & Site Survey team will assess your current configuration and build a solution to fit your needs. Feedback November 29, 2021 "Technician was personable, took the time to offer insight on the equipment, and answered all the questions I had." 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