Maintenance And Checks - NEC 500 UPS User Manual

11. Maintenance and Checks

Storage
Storage Conditions
Store the UPS covered and upright in a cool, dry location, with its battery fully charged. Before storing, charge the UPS for at
least 4 hours.
Extended storage
At -15 to +30 C (+5 to +86 F), charge the UPS's battery every 6 months.
At +30 to +45 C (+86 to +113 F), charge the UPS's battery every 3 months.
Daily Check
Check the front bezel LEDs and the temperature of the room in which the UPS resides.
Scheduled Check
Once a year check the UPS for discoloration anywhere, frayed cables or power cords, or other signs of deterioration. Check that
the air flow around the UPS is adequate and that the vent is clear.
Battery Life
Temperature
20 C
30 C
40 C
Battery Life
5 years
4 years
2.5 years
11
Change Battery After
4.5 years
3.5 years
2 years