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 eventual- ly 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” LEDs: the LEDs indicate the approximate elec- trical load of equipment connected to the UPS's AC outlets. They 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” LEDs: when the UPS is operating from utility power, the LEDs indicate the approximate charge state of the UPS's internal batteries: red indicates the batteries are beginning to charge; yellow indicates the batter- ies 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, the LEDs indicate the approximate amount of energy (ultimately affecting runtime) which the UPS’s batteries will provide: red indi- cates 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 periodi- cally perform a
“BATTERY WARNING” LED: this LED lights red and an alarm sounds intermittently after you initiate a self test (See “MUTE/TEST” Button descrip- tion) to indicate the UPS batteries need to be recharged or replaced. Allow the UPS to recharge continuously for 12 hours, and repeat the
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