Maintenance of UPS (uninterruptible power supply) is essential to ensure its stable operation and extend its service life. The following are some main maintenance methods:
Daily inspection
- Appearance inspection: Check whether the UPS host and battery pack have any shell deformation or damage, whether there is dust or stains on the surface, and whether the connecting cables are damaged or loose.
- Operation status inspection: Observe the UPS panel indicator light to confirm whether the input, output voltage, frequency and other parameters are within the normal range, and whether there are any alarm prompts.
- Battery status inspection: Check whether the battery appearance is bulging or leaking, measure the battery voltage, and if the voltage of a single battery is lower than the standard value, pay attention and find out the cause.
Regular maintenance
- Every 3-6 months: Clean the UPS host and battery pack, wipe the dust with a clean and soft damp cloth, ensure that the heat dissipation holes are not blocked, and ensure good heat dissipation. Perform a load test on the UPS for 15-30 minutes to check whether the UPS is running stably under load and whether the output voltage and frequency are normal.
- Every 6-12 months: Check the electronic components inside the UPS to see if there are any abnormal phenomena such as overheating, discoloration, capacitor bulging, etc., and promptly discover and replace aging or damaged components. Perform a deep discharge test on the battery, discharge the battery to 30%-50% of the rated capacity, and then charge it to activate the active substances on the battery plates and prevent the battery plates from sulfiding. This is usually done every six months.
- Every year: Ask professional technicians to conduct a comprehensive inspection of the UPS, including the inspection of the inverter, rectifier, charging and other functional modules of the UPS to ensure that its performance indicators meet the requirements. According to the battery usage and life, consider whether it is necessary to perform balanced charging of the battery pack to balance the voltage and capacity differences between the batteries. This can generally be done 1-2 times a year.
Environmental maintenance
- Temperature control: The UPS should be placed in an environment with a temperature of 20℃-25℃. Too high a temperature will accelerate battery aging, and too low a temperature will reduce battery performance.
- Humidity management: The ambient humidity should be kept at 40%-60%. Too high a humidity can easily cause internal short circuits and corrosion in the equipment, and too low a humidity can easily generate static electricity.
- Cleaning and ventilation: The room where the UPS is placed should be kept clean, free of dust and corrosive gases, and have good ventilation conditions to ensure air circulation around the UPS.
Other precautions
- Load management: The load of the UPS should be controlled at 60%-80% of the rated capacity to avoid overload operation and frequent power on and off.
- Records and reports: Each maintenance should record relevant data and conditions in detail, such as inspection time, content, problems found and treatment results, etc., to facilitate tracking of the operating status and maintenance history of the UPS.
