Liebert GXTMT Series Installation and User Manual
1-3 kVA UPS
Page １８ V2.11 Emerson Network Power
Maintenance
9. Maintenance
Operation
The UPS system contains no user-serviceable parts. If the battery service life has been
exceeded, the batteries must be replaced. In this case please contact your dealer.
Battery Maintenance
z This series UPS only requires minimal maintenance. The battery used for standard models are
value regulated sealed lead-acid maintenance free battery. These models require minimal
repairs. The only requirement is to charge the UPS regularly in order to maximize the expected
life of the battery. When being connected to the utility power, whether the UPS is turned on or
not, the UPS keeps charging the batteries and also offers the protective function of
overcharging and over-discharging.
z The UPS should be charged once every 4 to 6 months if it has not been used for a long time.
z In the regions of hot climates, the battery should be charged and discharged every 2 months.
The standard charging time should be at least 12 hours.
z Battery replacement should be performed by qualified personnel.
z Replace batteries with the same number and same type of batteries.
z Do not replace the battery individually. All the batteries should be replaced at the same time
following the instructions of the battery supplier.
z Normally, the batteries should be charged and discharged once every 4 to 6 months. Charging
should begin after the UPS shuts down automatically in the course of discharging, the standard
charging time for the standard UPS should be at least 12 hours.
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