- 21 -
7.3.1 Turn on the UPS and then turn on loads..
7.3.2 Turn off INPUT circuit breaker or unplug input cable for model NB 7525 and
NB 1K25 from utility power. Check whether the loads are still working
normally because right now the loads are taking power from backup battery.
7.3.3 If the loads are not working normally, that means backup batteries are
deteriorated. To replace with the new batteries, contact us or our nearest
service center.
7.4 If you have to store UPS for a long period of time, before storing, be sure the battery
is fully charged and it need to be recharged every three months to preserve the
condition of the internal battery by following the procedures below;
7.4.1 Model NB7525 and NB1K25
7.4.1.1 Turn off the UPS by pressing the POWER button at the front panel.
7.4.1.2 Turn off the BATTERY circuit breaker .
7.4.1.3 When user wants to use the UPS, plug the INPUT CABLE to wall outlet
(utility line). Turn on POWER button and wait until the ventilation
fan blows. Then, turn on BATTERY circuit breaker.
7.4.2 Model NB 2K25, NBP 3K25, NBP 5K25 and NBP 6K25
7.4.2.1 Turn off the UPS by pressing the POWER button at the front panel.
7.4.2.2 Turn off the BATTERY circuit breaker.
7.4.2.3 Turn off the INPUT circuit breaker.
7.4.2.4 When user wants to use the UPS, turn on INPUT circuit breaker. Turn
on POWER button and wait until INVERTER indicator is lit. Then, turn
on BATTERY circuit breaker.
7.4.3 Model Model NBP 0811 and NBP 1011
7.4.3.1 Turn off OUTPUT circuit breaker.
7.4.3.2 Turn off the UPS by pressing the POWER button at the front panel.
7.4.3.3 Turn off the BATTERY circuit breaker.
7.4.3.4 When user wants to use the UPS, follow start up procedure in section
5.1.3.
7.5 For your safety, unplug the input cable and turn off input switch or disconnect
from utility power before maintenance.
7.6 When you need to replace input fuse, use the same type and same rating only.
