StorageTek L180, Service Manual

Page: 232 / 266

Power System
A-6 Fifth Edition 95897
Uninterruptible Power Supply
The uninterruptible power supply (UPS) is an optional feature designed to
prevent blackouts, brownouts, sags and surges in AC power. This UPS also
filters out small fluctuations and disturbances in AC line voltage.
The UPS comes with a power strip that allows you to connect up to eight
additional components to the UPS. If power fails, the UPS will supply power to
the equipment connected to the power strip until the batteries are exhausted.
While running on battery power, periodic beeps will sound.
• Press the TEST/ALARM DISABLE button to turn off this alarm.
• A continuous beep will sound two minutes before the UPS will shutdown.
Figure A-2 shows the cable diagram for the UPS and the library:
Notes:
• The UPS requires additional cooling if installed in the library. This cooling
fan is also an optional feature for the library. See
“Optional Cooling Fans”
on page A-9 for more information.
• Refer to the L180 and L700 Uninterruptible Power Supply Reference Manual
for more information.
Figure A-2. UPS Cable Diagram (C65293)
C67366
UPS A
REDUNDANT
SWITCH
L180
OUTLET STRIP
FAN
UPS B