UPS Maintenance & Repairs

UPS preventative maintenance ensures your system runs smoothly and UPS repairs are identified

Keep your UPS system running smoothly with technical support and preventative maintenance

The key to an efficient and reliable UPS is careful upkeep. Mitsubishi Electric’s multifaceted maintenance services and power supply repairs keep your UPS running at optimal performance while identifying potential threats. Our comprehensive testing makes us a leading performer in UPS parts replacements and maintenance services. In addition to UPS system maintenance and repairs, providing a healthy string of batteries is an essential step in protecting your critical load. In fact – failed batteries are the number one cause of UPS system failures. Our technicians will ensure your batteries are fully charged and replaced when necessary.

Battery Maintenance, Replacement, & Upgrades

Batteries are a vital component of any UPS and considered the last line of defense against expensive downtime. They are also highly vulnerable when not managed properly. Mitsubishi Electric offers maintenance, monitoring and replacement services that keep your batteries fully charged and your UPS fully operational. All services are conducted in strict adherence to IEEE guidelines – including complete battery removal and recycling. We can work with any battery make or model, and even offer flywheel service and repair. From large-scale change outs to single string or individual battery replacements, Mitsubishi Electric is your DC power partner.



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UPS Maintenance, Replacements, & Upgrades

Our customer service team will work with you to determine the ideal plan to service your equipment. With UPS technical support, preventative maintenance becomes predictive – we’ll help you know what updates and upgrades are coming so you have replacements installed onsite before you need them.

UPS technical support and maintenance may vary by contract, but generally includes component verification, fan trending, thermal scans, and IEEE battery checks. Field service technicians use industry leading tools, meters, and expertise to troubleshoot, diagnose, and repair system irregularities found in the steps detailed below.

Initial/Annual UPS Maintenance

It’s important to schedule annual service to ensure your uninterruptible power supply and batteries are running smoothly and reduce your need for UPS parts replacements. Mitsubishi offers annual inspections as part of our standard contracts and they include physical and electrical inspections as well as adjustments or recommendations for action.

Annual UPS battery maintenance may include:

  • Measurement of the battery system’s ambient temperature and the individual battery’s temperature at the negative post.
  • Measurement of battery system float voltage and charge current, open circuit voltage, ground fault.
  • Measurement of individual battery unit strap resistance, unit impedance, conductance or load capacity.
  • Inspection of the battery cabinet and individual battery units for signs of leakage, dirt or damage.
  • Environmental inspection to eliminate anything that might interfere with battery operation.

Annual system maintenance may include:

  • Visual inspection of internal components and wiring for loose connections, deterioration or damage – anything that could impact proper operation
  • Verification of proper software, control power devices, converter/rectifier operation, inverter operation, and cooling fan operation.
  • Test of static/internal maintenance bypass operation and system voltages and currents.
  • Verification of transfer operations and emergency (backup) mode operation and emergency power off (EPO test).
  • Verification that UPS is supporting the critical load.

With annual UPS preventative maintenance, we’ll provide a fast follow through with comprehensive documentation of findings, required UPS repairs, and adjustments or remedial action plans when necessary.

Quarterly/Semi-annual UPS Maintenance

While annual service is the suggested minimum, we recommend our technicians come out and perform battery and system maintenance at least twice a year to ensure your system is functioning properly and will back up power in the event of loss or fluctuation. There may also be value in quarterly inspections, especially as your equipment and batteries age. UPS quarterly/semi-annual preventative maintenance includes:

Battery testing:

  • Visual inspection of battery storage and individual battery units for contamination and damage, including leaks, overheating, terminal integrity and corrosion, bulging and more.
  • Measurement of ambient and individual battery temperature, float voltage and current charge, and individual battery unit impedance, conductance and load capacity - scaled-down from annual testing.

System testing:

  • Physical environment inspection for any elements that could impact operation.
  • Verification of proper software versions and adjustable parameters
  • Verifications of proper cooling fan operation and display of system values
  • Review of event or fault history
  • Verification UPS is supporting the critical load and no alerts/alarms are present

As with annual UPS preventative maintenance, we’ll generate a test report and discuss any necessary UPS repairs while we’re onsite.

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Contact our customer service team for maintenance requests and power supply repairs

For immediate UPS technical support, phone us at 800-887-7830 and select option #1. For all other UPS service, repair or maintenance requests, fill out our Contact Form and select Service. For UPS parts, select Options and Parts.

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