Troubleshooting 59
UPS does not provide the expected backup time
Action:
1. If the Overload LED ("UPS front panel controls" on page 7) is illuminated, remove one or more load
devices to reduce the power requirements.
2. Power down the UPS ("Powering down the UPS" on page 44).
3. Allow the UPS batteries to charge for 24 hours.
4. Initiate a self-test ("Initiating a self-test" on page 43).
5. During extended power outages, save your work, power down the load devices, and then power
down the UPS ("Powering down the UPS" on page 44) to conserve battery power.
UPS frequently switches between utility and battery
power
Action:
1. Check the input voltage and reconfigure the UPS ("Configuring the UPS" on page 42).
2. Contact a qualified electrician to verify that the utility power is suitable for the UPS.
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