Maintenance 38
Testing the new battery module
After installing the new battery module, press the Test/Alarm Reset button to initiate a self-test ("Initiating a
self-test" on page 30).
IMPORTANT: The UPS does not execute a self-test until the batteries are 90 percent charged.
IMPORTANT: Charge the batteries for at least 24 hours before supplying backup power to
devices. The batteries charge to:
• 90% of their capacity within 4 hours
• 100% of their capacity within 24 hours
If the installation has been successful, the Battery Fault LED is not illuminated. If the installation has not
been successful, the Battery Fault LED illuminates. If this occurs, repeat the UPS battery replacement
procedure (on page 36), and check the battery terminal connections. If the Battery Fault LED is still
illuminated, see "LED and audible alarm troubleshooting (on page 41)."
For the location of buttons, see "UPS front panel controls (on page 7)."
For the location of LEDs, see "UPS front panel LED indicators (on page 8)."
Replacing the UPS
To remove the UPS:
1. Power down all attached load devices.
2. Power down the UPS ("Powering down the UPS" on page 31).
3. Switch the circuit breaker for any attached ERMs to the Off position.
4. Unplug the UPS power cord.
5. Disconnect the communications cable from the option card.
6. Disconnect the ground bonding cable.
7. Disconnect the REPO port.
8. Unplug the load devices.
9. Unplug the ERM connected to the UPS.
10. Remove the UPS front bezel ("Removing the UPS front bezel" on page 33).
11. Disconnect the battery leads.
12. Remove the UPS battery bracket.
13. Remove the UPS battery modules.
14. Remove the screws securing the UPS to the rack.
15. Remove the UPS from the rack.
To replace the component, reverse the removal procedure.
Replacing the ERM
To remove the ERM:
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