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8
Basic Operation continued
Indicator Lights (Front Panel)
AllIndicatorLightdescriptionsapplywhentheUPSispluggedintoawalloutletandturnedON.
“POWER” LED: ThisgreenLEDlightscontinuouslywhentheUPSisONand
supplying connected equipment with AC power from a utility source. The
LED flashes and an alarm sounds (4 short beeps followed by a pause) to
indicate the UPS is operating from its internal batteries during a blackout or
severe brownout. If the blackout or severe brownout is prolonged, you
should save files and shut down your equipment since internal battery power
willeventuallybedepleted.See“BATTERYCHARGE”LEDdescriptionbelow.
“VOLTAGE CORRECTION” LED: This green LED lights continuously
whenever the UPS is automatically correcting high or low AC voltage on the
utility line without the assistance of battery power. The UPS will also emit a
slight clicking noise. These are normal, automatic operations of the UPS, no
action is required on your part.
“OUTPUT LOAD LEVEL” LED: Thisstackof3LEDs(green,yellow,red)
indicatestheapproximateelectricalloadofequipmentconnectedtothe
UPS's AC outlets. It will turn from green (light load) to yellow (medium load)
to red (overload). If the LED is red (either illuminated continuously or
flashing), clear the overload immediately by unplugging some of your
equipment from the outlets until the LED changes from red to yellow (or
green).CAUTION!Anyoverloadthatisnotcorrectedbytheuserimmediately
may cause the UPS to shut down and cease supplying output power in the
event of a blackout or brownout.
“BATTERY CHARGE” LED: When the UPS is operating from utility power,
thisstackof3LEDs(green,yellow,red)indicatestheapproximatecharge
state of the UPS's internal batteries: red indicates the batteries are
beginningtocharge;yellowindicatesthebatteriesareroughlymidway
throughcharging;andgreenindicatesthebatteriesarefullycharged.When
the UPS is operating from battery power during a blackout or severe
brownout,theseLEDsindicatetheapproximateamountofenergy(ultimately
affecting runtime) which the UPS’s batteries will provide: red indicates a low
levelofenergy;yellowindicatesamediumlevelofenergy;andgreen
indicates a high level of energy. Since the runtime performance of all UPS
batteries will gradually deplete over time, it is recommended that you
periodicallyperformaself-test(seeMUTE/TESTButtondescription)to
determinetheenergylevelofyourUPSbatteriesBEFOREablackoutor
severe brownout occurs. During a prolonged blackout or severe brownout,
you should save files and shut down your equipment since battery power will
eventually be depleted. When the red LED is lit and an alarm sounds
continuously, it indicates the UPS's batteries are nearly out of power and
UPS shut down is imminent.
12-10-307-93-3181.indb 8 11/2/2012 9:27:47 AM