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DEFAULT SETTINGS
Voltage Sensitivity
The UPS detects line voltage distortions (such as spikes, notches, dips,
and swells) as well as distortions caused by operation with inexpensive
fuel-powered generators. By default, the UPS reacts to distortions by
transferring to on-battery operation to protect the connected equipment.
Where power quality is poor, the UPS may frequently transfer to on-
battery operation. If the connected equipment can operate normally under
such conditions, reduce the sensitivity setting to conserve battery capac-
ity and service life.
To reduce UPS sensitivity, press the voltage sensitivity button. Use a
pointed object (such as a pen) to do so. Press the button once to set sen-
sitivity to medium. Press it again to set sensitivity to low. Press the but-
ton a third time to reset to high sensitivity. You also can change the sen-
sitivity level through software.
Brightly lit: UPS is set to high sensitivity.
Dimly lit: UPS is set to medium sensitivity.
Off: UPS is set to low sensitivity.
Low Battery Warning
Level
The low battery warning beeps to indicate low on-battery run time. It
beeps periodically (approximately three times per minute) when less than
seven minutes of run time remain. The beeps are continuous when only
two minutes of run time remain.
This may not be enough time to shut down some protected computer
systems. To change the warning interval default setting, press the voltage
sensitivity button while pressing and holding the front-panel
button.
Brightly lit: Low battery warning interval is about two minutes.
Dimly lit: Low battery warning interval is about five minutes.
Off: Low battery warning interval is about seven minutes.
F
AULT LEDS
Input Circuit Breaker
If the plunger on the circuit breaker (located above the input cable con-
nection) pops out, reduce the load on the UPS by unplugging equipment
and press the plunger in.
Site Wiring Fault LED
120V models only: This LED lights up when the UPS is connected to an
improperly wired utility power outlet. Refer to Troubleshooting in this
manual.