Liebert 1000kVA - Manual (Page 96)

Operation
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The Battery block in the Monitor/Mimic Display indicates the battery voltage and charge current.
Use the Monitor/Mimic Display screen to determine the condition of the UPS module. Press the
Alarm Reset pad to clear the Alarm Messages. Refer to Table 9 for an explanation of any remaining
alarm messages. Call Liebert Global Services if you cannot clear the remaining alarm messages.
If no alarm messages are displayed, the UPS module is now ready to provide filtered, uninterruptible
power to the critical bus. Manually close the module output circuit breaker (CB2, Figure 8) to place
this UPS module on-line.
When all required UPS modules are on-line, return to the SCC (see 3.4.3 - Load Transfer Proce-
dures) to complete your UPS system start-up.
NOTE
The battery charge current may increase quickly, but then should slowly decrease. If you are
recovering from a battery shutdown or an input power failure, the UPS rectifier will be
recharging the battery. Recharge current can be more than 100 Amps. The maximum allowable
recharge current for your unit will depend on the kVA rating and your factory-set battery
recharge current limit.
!
CAUTION
Do not use equalize charging with valve-regulated, sealed-cell batteries. Refer to the battery
manufacturer’s manual, available on the manufacturer’s Web site, for specific information
about equalize charging.