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Battery Maintenance 5-5
Step 1: Preparing the UPS
To replace batteries with the UPS Off
1.
Shut down all load devices.
2.
Press the STANDBY button to take the UPS out of Operate mode. The
ON LED extinguishes, and power to the load receptacles ceases.
3.
Disconnect the UPS from utility power.
4.
Wait at least 60 seconds, while the UPS internal circuitry discharges.
To replace batteries with the UPS in
Operate mode (hot-swapping)
Batteries may be replaced (hot-swapped) without powering off the UPS if both
of the following conditions are met:
■ The UPS is not charging the batteries (Battery Charge LEDs 6, 7, and 8
are all green, indicating that the batteries are fully charged).
NOTE: Older batteries may be fully charged but still incapable of providing adequate
backup for devices. Therefore, the battery charge LEDs can indicate the batteries are fully
charged, while the UPS diagnostics have determined that the batteries need to be
replaced.
■ The UPS is not supplying battery power to devices (AC Input LEDs 1
and 4 are green, indicating that the UPS is supplying utility power).
Step 2: Removing the Battery Pack
Follow this procedure to remove the battery pack:
1.
To obtain access to the battery pack, remove the four screws holding
the faceplate; detach the faceplate sufficiently to disconnect the LED
display cable.