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(6002-1646) REV.X8 19
6. At this point in time, the Fire Alarm Back-up UPS1481 should be providing AC line power.
The Fire Alarm Back-up UPS1481 is not operating in the normal mode, turn off the input
circuit breaker. Contact OnLine Power at (800) 797-7782 for technical assistance.
7. Recheck that the output voltage is 120/240 VAC.
• If the output voltage is approximately same as nameplate, turn on the loads which will
be powered from
the Fire Alarm Back-up UPS1481 .
8. The next steps verify battery operation and the inverter test switch.
• To place the Fire Alarm Back-up UPS1481 in battery operation (to simulate loss of
input power), press and hold yellow Inverter Test Switch. With switch in the hold
position, the Fire Alarm Back-up UPS1481 should be running on its internal batteries.
• Verify that the LCD panel displays such.
• Verify that the “Battery Charger” is OFF in LCD panel.
Note: Be sure to release the switch, after the test, so it will not deplete the batteries.
9. The Fire Alarm Back-up UPS1481 is now fully functional - providing clean, sine wave
power to the load with battery back—up in case of an input power failure. This concludes
the start-up procedures.
3-2 Operation
3-2-1 Turning On the Fire Alarm Back-up UPS1481 :
1. Apply input power.
2. With input power available, turn on the main input circuit breaker, CB2 (if provided).
3. Close battery breaker (CB1), only after the LCD display is lit & displays screens per
Appendix D.
4. Wait till you hear the input contactor closing and fan running.
5. Verify that all parameters on LCD display panel are proper. See Appendix D for display
details.
6. Close the output circuit breaker, CB2 (if provided).
7. Turn load breakers On.