MGE UPS Systems GES-302L User Manual
Always “On” UPS Systems Inc.
13
Battery Charge Bar Graph
This 5 LED display indicates the present charge of the UPS's batteries as a percentage of the total
battery capacity. When all five LED’s are lit, the batteries are fully charged. When only two of
the LED’s are lit, the batteries can supply less than two minutes of power to the load.
This 5 LED display indicates the present charge of the UPS's batteries as a percentage of the total
battery capacity. When all five LED’s are lit, the batteries are fully charged. When only two of
the LED’s are lit, the batteries can supply less than two minutes of power to the load.
Cold Start
When the UPS is off, and there is no utility power, use the cold start feature to apply power to
the loads from the UPS's battery. Press and hold the “ON/TEST” button until the UPS beeps.
When the UPS is off, and there is no utility power, use the cold start feature to apply power to
the loads from the UPS's battery. Press and hold the “ON/TEST” button until the UPS beeps.
Shutdown Mode
In shutdown mode the UPS stops supplying power to the load, and waits for the return of utility
power. If there is no utility power present, external devices (e.g., servers) connected to the
computer interface port can command the UPS to shutdown. This is normally done to preserve
battery capacity. The UPS will scroll the front panel indicators sequentially in shutdown mode.
In shutdown mode the UPS stops supplying power to the load, and waits for the return of utility
power. If there is no utility power present, external devices (e.g., servers) connected to the
computer interface port can command the UPS to shutdown. This is normally done to preserve
battery capacity. The UPS will scroll the front panel indicators sequentially in shutdown mode.
Audible Alarm
Back-Up (Slow Alarm)
When in back-up mode, the Yellow LED illuminates and the UPS sounds an audible alarm. The
alarm stops when the UPS returns to line normal operation. Press the On/Off/Test/Silence
Button during back-up mode to silence the beeping.
When in back-up mode, the Yellow LED illuminates and the UPS sounds an audible alarm. The
alarm stops when the UPS returns to line normal operation. Press the On/Off/Test/Silence
Button during back-up mode to silence the beeping.
Low Battery (Rapid Alarm)
In back-up mode, when the battery energy runs low, the UPS beeps rapidly until the UPS shuts
down from battery exhaustion or returns to line normal operation.
In back-up mode, when the battery energy runs low, the UPS beeps rapidly until the UPS shuts
down from battery exhaustion or returns to line normal operation.
Overload (Continuous Alarm)
When the UPS is overloaded (the connected load exceeds the maximum rated capacity of the
UPS) the UPS sounds a continuous alarm to warn of an overload condition. Disconnect non-
essential loads until the UPS stop the alarm, this will eliminate the overload.
When the UPS is overloaded (the connected load exceeds the maximum rated capacity of the
UPS) the UPS sounds a continuous alarm to warn of an overload condition. Disconnect non-
essential loads until the UPS stop the alarm, this will eliminate the overload.
Replace Battery (Continuous Alarm)
The UPS emits continuous beeps and the REPLACE BATTERY LED illuminates if the battery
fails the self-test. See replace battery section for battery replacement or call your dealer for
service.
The UPS emits continuous beeps and the REPLACE BATTERY LED illuminates if the battery
fails the self-test. See replace battery section for battery replacement or call your dealer for
service.