Simple tips to maintain your UPS system

Last Updated on: 11-01-2023

The Uninterruptible Power Supply- UPS system plays a critical role in every segment, and it is important to maintain the same regularly to ensure optimal performance and protection capabilities. This article will provide basic knowledge to end-users about how to maintain UPS batteries.

It is a known fact that good maintenance of any equipment shall yield the best performance for years. When talking about the UPS system, it is doing regular maintenance. There is one more important point to think of.

Yes, it is a good installation with the necessary precautions.

The formula behind is
‘Good and Proper Installation’ + ’Regular Maintenance’ = “Trouble-Free Operation For Years”.
Let us understand the context with the following tips.


  • Install the modem UPS system in a cool, ventilated and dry place. Refer to the user manual for temperature requirements.
  • Install the modem UPS system in a cool, ventilated and dry place. Refer to the user manual for temperature requirements.
  • For non air conditioner sites, an exhaust fan is recommended to ensure the ambient temperature is well maintained as per UPS system manufacturer requirements.
  • The UPS system installed must be free from dust, moisture, corrosive chemicals, water spillages, rodent entries etc.,
  • Allow at least 2 feet distance from the wall for installing UPS systems.
  • Any objects must not block the air vents of UPS systems.
  • Do not store any unwanted materials, inflammable materials near the UPS battery.
  • Do not allow either direct sunlight falling over the modem UPS system or hot objects nearby.
  • Ensure only your authorized electrical person visits the UPS system room with electrical safety PPEs and do periodic checks like measuring input voltage and frequency, output voltage and load current, battery voltage etc.
  • For any abnormal annunciations, please call our experts for necessary advice and solutions.
  • Connect only recommended types of loads to the UPS system.
  • Connect the loads as per UPS capacity and ensure no overloading.
  • Choose suitable MCBs, MCCBs for UPS input and output circuits. “C” curve MCBs are recommended.
  • Lightning arrestors are recommended for UPS installations in hilly areas.
  • Good quality Cables of suitable rating must be used for UPS input and output terminations.
  • Maintain minimum distance between UPS and batteries to prevent voltage drops.
  • The capacity of available Energy metres must be well assessed before purchasing UPS.
  • Earthing must be properly connected to UPS as per standards.
  • Choose the battery capacity by assessing the Load level, UPS capacity, frequency of power fluctuations and outages, Backup time etc. Feel free to consult our experts for support.
  • Ensure power continuity to UPS input is always present.
  • Wherever the power outages are more, we recommend that Gensets power up the UPS to charge the batteries. This will extend the battery life.
  • The batteries must be recharged immediately after every discharge to increase battery life.
  • Replace the weak batteries immediately with a new one. Else it will affect the other battery performance.
  • If the power cuts are very rare, it is not recommended to keep the batteries always charged for a prolonged period. In such cases, please do a battery backup test for an hour at least twice a month to extend the battery life span.
  • Do remember not to overcharge, undercharge, or deep discharge the batteries always.
  • To install our UPS remote monitoring software and ensure the normal operation of the UPS system.
  • Call our service support team for scheduled preventive maintenance (PM). Maintain a log register for updating the PM.
  • Preventive maintenance is an active defence against modem UPS downtime. For which we require a complete load shutdown from the end-user.
  • Our preventive maintenance includes:
    • Thorough dust cleaning of UPS and batteries with a soft brush and air blowers
    • Checking the tightness of cable terminations inside the UPS systems, terminal blocks and breakers
    • The healthiness of DC capacitor banks
    • Mounting checks for Power components, PCBs
    • Cooling fan status
    • Battery fastener tight check-up
    • Distilled water top up and petroleum jelly application for flooded batteries
    • Display parameter checks
    • Recording Input and output parameter measurements
    • Battery backup test
    • Annunciation checks
    • Demonstrating SOPs, Dos and Don’ts to customers for good maintenance of UPS systems and batteries

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