StorageTek L180 Reference Manual page 38

Fault Isolation
Problem and Possible Cause
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.
• The UPS is overloaded.
Front panel indicators flash sequentially.
• The UPS has been shutdown by
remote control.
All indicators are lit and the UPS emits a constant beeping sound.
• Internal UPS fault.
All indicators are off and the UPS is plugged into the power source.
• The UPS has shutdown and the
battery is discharged from an
extended outage.
The Replace Battery light is on.
• Weak batteries.
• Replacement batteries not
connected properly.
Note: * See Chapter 5, "Service"
Customer Support Services.
4-8
Solution
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. *
Check the UPS load display and unplug any less
needed equipment (such as printers).
None. The UPS will restart automatically when
power is restored.
Do not use the UPS. Turn off the UPS.
Contact StorageTek' Customer Support Services*
immediately to obtain a new UPS.
None. The UPS will return to normal operation
when power is restored and the battery has a
sufficient charge.
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.
Check or reconnect the battery connections.
for information about how to contact StorageTek's
First Edition 96047