To replace the component, reverse the removal procedure.

NOTE: Replacing the option card might require power management software to be restarted or reconfigured.

Replacing the batteries

To replace the batteries:

1.Read and observe the requirements in "Important battery safety information (on page 35)" and "Battery care and storage guidelines (on page 35)."

2.Follow the instructions in "UPS battery replacement procedure (on page 36)."

Important battery safety information

WARNING: The unit contains sealed lead-acid battery modules. To prevent fire or chemical burns:

•Do not attempt to recharge batteries after removal from the unit.

•Do not disassemble, crush, or puncture the batteries.

•Do not short the external contacts of the batteries.

•Do not immerse the batteries in water.

•Do not expose to temperatures higher than 60°C (140°F).

WARNING: To prevent personal injury from hazardous energy:

•Remove watches, rings, or other metal objects.

•Use tools with insulated handles.

•Do not place tools or metal parts on top of batteries.

WARNING: To prevent personal injury, prepare the area and observe all materials-handling procedures when transporting a battery module. Battery modules weigh 20 kg (44 lb).

NOTE: Replace all battery modules at the same time.

Battery care and storage guidelines

•Minimize the amount of time the UPS uses battery power by matching the UPS configuration with the utility voltage. Refer to "Configuring the UPS (on page 28)."

•Keep the area around the UPS clean and dust-free. If the environment is very dusty, clean the outside of the UPS regularly with a vacuum cleaner.

•Maintain the ambient temperature at 25°C (77°F).

•If storing a UPS for an extended period, recharge the batteries every 6 months:

Maintenance 35