6 maintenance – OPTI-UPS DS120KC33 User Manual
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6 Maintenance
(1) Keep the operating environment clean and clean the inside of the UPS at least once a year.
(2) Discharge and charge the battery at least once every three months to improve the life of the
battery.
(3) Please note the temperature and humidity of the operating environment.
(4) When storing the UPS, use PE plastic bag to pack it.
(5)
Check
the lithium cell on the PCB3304 every year and change it if the cell voltage goes under 2 VDC.