User Manual

3 OPERATING THE UPS
WARNING! Risk of electric shock. Can cause injury or death. Hazardous mains and/or battery
voltage exists behind the protective cover No user accessible parts are located behind the
protective covers that require a tool for removal. Only qualified service personnel are
authorized to remove such covers. If maintenance for rack is needed, notice that the neutral
line is live.
3.1 Silencingthe Audible Alarm
The audible alarm may sound during UPS operation. To silence the alarm, press and hold the ESC button
for 2seconds. The button is located on the front-panel display, see Operation and Display Panel on
page29.
3.2 Starting-up the UPS
IMPORTANT! Do not start the UPS until after the installation is finished, the system is commissioned
by an authorized engineer, and the external input circuit breakers are closed.
CAUTION: Starting the UPS applies mains/utility power to the output terminals. Make sure that
the load power is safe and ready to accept power. If the load is not ready, isolate the load with
the output terminal.
The UPS starts in Normal Mode.
To start the UPS:
1. Ensure that the REPO connector on the rear of the unit has a jumper between pins 7-8 or that
it is properly wired to an Emergency Power- Off circuit (normally closed).
2. Make sure the breaker supplying power to the UPS is closed, and if necessary press the input
circuit breaker reset buttons at the rear of the UPS.
3. Close all output breakers on the rear of the UPS (or in an external panel board, if used).
4. Power-on the UPS by pressing and holding the power button on the operation and display
panel until the confirmation dialog appears. Use the Up/ Down arrows to select YES, then press
Enter.
5. If this is the first-time start-up of the UPS, the Start-up Guidance wizard opens to set the basic
parameters of the UPS. Follow the prompts.
For detailed description of UPS display functions and settings, see Operation and Display Panel
on page29.
3.3 Transferring to Battery Mode
The UPS operates in Normal mode unless the mains/utility power fails or it is performing a battery self test,
then it automatically transfers to Battery mode for the back-up time available or the mains/utility power is
restored. Once input power is restored, the UPS returns to Normal mode.
NOTE: Battery back-up run times are listed in
Battery Run Times on page63.
3 Operating the UPS
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