UPS Maintenance

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UPS Maintenance

About Uninterruptible Power Supply (UPS)

A UPS is essentially a series of batteries that maintains power to critical pieces of equipment that cannot withstand a power interruption. A UPS protects equipment from such elements as power interruptions, voltage variations, frequency variations, and transient disturbances.

As technology evolves, more parts of equipment require uninterruptible power, making a reliable UPS increasingly crucial in any facility. Upon losing utility power to a facility, it often takes 10 seconds or more for the genset to start and supply the electricity as an emergency source, but most electronic equipment cannot tolerate more than a few cycles of power disruption without shutting down. Repeated maintenance is indispensable for prolonging the UPS lifespan and ensuring long-lasting reliability.

UPS Maintenance

Like any other complex electronic equipment, all UPS products require maintenance to ensure optimal performance and reliability. During a maintenance visit Neeco technicians inspect, test, calibrate, update, and clean components. A written report is provided detailing the results of the inspection, and specific recommendations are made for remedial actions, proactive replacements, and upgrades. With more than 5 years of experience servicing industry-leading UPSs, Neeco can help you maintain the reliable performance of your UPS, resulting in a higher return on your investment.

Preventive Maintenance

Preventive maintenance consists of a scheduled list of activities whose main goal is to minimize equipment operating problems and prevent failures by making minor or necessary repairs before major operating difficulties occur. One of the most important activities is periodic maintenance to ensure the integrity and lifetime of the batteries as well as your own electronic equipment. Without proper PM, a UPS will eventually deteriorate and expose the facility to an electrical malfunction or equipment failure. A scheduled preventive maintenance program for the UPS will ensure equipment reliability and benefit the organization’s bottom line.

Corrective Maintenance

Corrective Maintenance is done in order to identify, isolate, and rectify a particular fault of a UPS. This is performed in order to restore the failed UPS equipment to operational condition. Carrying out recurrent corrective maintenance will have a negative impact on operational costs. Performing regular preventive maintenance will prolong the UPS lifetime and minimize the impact on operational costs. Less corrective maintenance also leads to less downtime, increased uptime, increased production, and improved service to clients.

Preventive Maintenance Checklist

Our trained technicians regularly test your UPS systems’ safety functions, control functions, batteries, and connections to ensure proper operation. This also includes load testing and determining the backup time available on your batteries, spare parts, or time and material services which are available for customers who do not have a full maintenance contract. Last but not least, detailed reports are provided after every PM visit.

Regular equipment testing should be part of a facility’s UPS maintenance schedule. The testing framework and its activities are customizable and significantly depend on Client requirements, but most typically include the following procedures:


  • Visual inspection of equipment for loose connections, burned insulation, or any other signs of wear.
  • Functional checkout and test of the UPS diagnostic systems.
  • Check of environment, temperature, dust, moisture, room vents, etc.
  • Inspection of all power cabling for abrasions and burn spots, signs of overheating, swelling, leaking, etc.
  • Examination of printed circuit board alignments.


  • Replacement of the air filters. Visual check for liquid contamination from batteries and capacitors.
  • Cleaning and vacuuming of UPS equipment enclosures.
  • Check of HVAC equipment and performance related to temperature and humidity.
  • Check and calibration of each system, to include switchgear and circuit breakers, meters, and alarm levels for frequency, voltage, current, transfer, trip, alarm, etc.
  • Cleaning and tightening all power connections at the input and output terminals, at all circuit breakers, and at the terminal posts and fuses on the rectifier and inverter legs.


  • Conduction of thermal scans on electrical connections to ensure all are tight and not generating heat, which is the first and sometimes only indication of a problem. A non-evasive diagnostic tool helps technicians identify hot spots invisible to the human eye.
  • Provisioning of a complete operational test of the system, including a monitored battery-rundown test to determine if any battery strings or cells are near the end of their useful lives.
  • Off-line load test the UPS system to ensure that the system is completely functional.


  • Control battery replacement: if the control batteries have been used without an inverter or bypass AC po wer, they may need replacement sooner.Testing the UPS transfer switches, circuit breakers, and bypasses.
  • Whenever UPS testing occurs, our technicians place the system into bypass mode or transfer the load to the redundant system, if designed this way. They are especially cautious when maintaining the equipment to prevent an outage. Our technicians are also familiar with most standard UPS equipment, manufacturers’ testing requirements, specifications, and of course, safety precautions.

Corrective Maintenance

Additionally, just in case any unexpected issues happen to our clients with their UPS devices, Neeco is able to immediately provision the spare parts from our local warehouses and field engineers to deliver remedial support activities on a global basis. We supply our clients with robust 24×7 remote support as well as SLA based on-site support, which all together significantly smoothen and speed up the corrective maintenance process. There are several SLA options at disposal.

Warehousing and Spare Parts Management

A comprehensive spectrum of warehousing services is offered at the central warehousing locations (typically one or two per region) that are the fundamental part of Neeco Supply Chain solutions. The storage areas include larger hub locations in major regions, as well as smaller warehousing facilities in remote areas, with a total of 60.000+ m2 of available storage space worldwide.

Once Neeco receives the list of sites and the on-site equipment as fundamental information for the spare management, an assessment for reliable and time efficient solutions is prepared. As a part of the assessment, spare parts identification and forecasting will be done by a service delivery team to define the amount of spare parts needed at each local warehouse in the vicinity of a site, using the spare management analytics.

Why to use Neeco

  • Benefits of Annual Maintenance from Neeco
  • Guaranteed protection of the significant investment into UPS by prolonging equipment life through preventive maintenance.
  • Complex maintenance packages with customizable services and fixed costs for ease of use and peace of mind.
  • Spare parts (most common battery sets, DC capacitors, fans, cables, etc.) are available at Neeco warehouses located all around the world.
  • Reliable service response times according the agreed SLAs which significantly lowers the mean time between failure and repair.
  • If any UPS reaches its end of life, Neeco provides upgrade recommendations which will minimize the probability of failure.
  • 24/7 remote support provided by our multilingual TAC.

Our ultimate goal is to provide everything our Clients need for successful deployment of global networking solutions. Through our expertise in the field of technical and local environment knowledge, we are able to deliver, deploy, and maintain ICT solutions worldwide, cost effectively, and in the shortest lead times.