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Chronic mild brownouts that cause the UPS to switch to battery
power frequently could leave your batteries low on charge. The
adjustable voltage potentiometer allows you to prevent excessive
battery drain by lowering the voltage point at which the UPS
switches to battery. To keep your UPS from switching to battery
during mild brownouts, turn the potentiometer clockwise to lower
the voltage point as much as 18% below the nominal setting of 99
volts when set fully clockwise.
Note: Your UPS’s optimal setting will depend on the voltage conditions in your area. Adjust it
clockwise only if you want to reduce how often your UPS switches to battery. Your UPS will function
properly at any setting. Use caution when adjusting the potentiometer while the UPS is powering
voltage-sensitive loads.
Other UPS Features

AC Receptacles

The receptacles provide your connected equipment with AC line
power during normal operation and battery power during black-
outs and brownouts. They also protect your equipment against
damaging surges and line noise. Select models, however,
feature “surge-only” receptacle(s) (identified on the back of the
UPS) that provide peripherals with surge protection without
committing precious battery power to support them during
blackouts.

RJ11 Telephone Jacks (Available on select models)

These jacks protect your equipment against telephone line
surges. Connecting your equipment to these jacks is optional.
Your UPS will still work properly without this connection.

Battery Replacement Door

Under normal conditions, the original battery in your UPS will
last several years. Battery replacement should be performed
only by qualified service personnel. Refer to “Battery Warnings”
in the Safety section on page 2.
Indicator Lights
All Indicator Light descriptions apply when the UPS is plugged into a wall outlet and turned ON.
This green light will turn ON whenever your UPS is plugged in and
receiving normal AC line power.
This red light will turn ON when your UPS is providing your
equipment with battery power.
This yellow light will turn ON after you test your UPS battery’s
charge with the “Mute/Test” Switch to indicate that the UPS’s
battery is less than fully charged. If it stays on continuously,
contact Tripp Lite for service. The light will flash after you set the
“OFF/ON” Switch to the “OFF” position to indicate that the UPS
will not provide battery backup during a blackout or brownout.
NORM
Available
on select
models
Available
on select
models
200001071 BC Personal and Internet 120V OM (6 Models).p65 2/10/00, 11:14 AM5