Fault Isolation
4-8 Firs t Edition 96047
UPS does not provide expected backup time.
•The UPS’s battery is weak because
of a recent power outage or is near
the end of its service life.
Charge the battery. Batteries require recharging
after extended outages. The batteries wear faster
when in service more often and when operated at
higher temperatures. If the battery is near the end
of its service life, consider replacing the battery.
Contact StorageTek’s Customer Support Services. *
•The UPS is overloaded. Check the UPS load display and unplug any less
needed equipment (such as printers).
Front panel indicators flash sequentially.
•The UPS has been shutdown by
remote control.
None. The UPS will restart automatically when
power is restored.
All indicators are lit and the UPS emits a constant beeping sound.
•Internal UPS fault. Do not use the UPS. Turn off the UPS.
Contact StorageTek’ Customer Support Services*
immediately to obtain a new UPS.
All indicators are off and the UPS is plugged into the power sour ce.
•The UPS has shutdown and the
battery is discharged from an
extended outage.
None. The UPS will return to normal operation
when power is restored and the battery has a
sufficient charge.
The Replace Battery light is on.
•Weak batteries. Allow the batteries to recharge for at least four
hours.
If the problem persists after recharging, contact
StorageTek’s Customer Support Services* to replace
the batteries.
•Replacement batteries not
connected properly.
Check or reconnect the battery connections.
Note: * See Chapter 5, “Service” for information about how to contact StorageTek’s
Customer Support Services.
Problem and Possible Cause Solution