Emerson Liebert NX 480V - Manual (Page 81)

Operating Instructions
73
6. Press the INVERTER ON control button for 2 seconds.
The inverter will start and the inverter indicator will flash green. After the inverter is ready, the
UPS will transfer from bypass to inverter, the bypass indicator will turn off and the inverter and
load indicators will turn on.
The UPS is operating normally. The UPS Mimic display indicators will:
9.2.2 Verify Switching Between Operation Modes
Switch from Normal Mode to Battery Mode
• Open CB1 to enter battery mode. This breaks the utility connection to the Liebert NX.
To return to normal mode, close CB1 after a few seconds. The rectifier will restart automatically
after 10 seconds and resume feeding power to the inverter.
Switch from Normal Mode to Bypass Mode
• Press the INVERTER OFF button to switch to bypass mode.
Switch from Bypass Mode to Normal Mode
• In bypass mode, press the INVERTER ON button. When the inverter is ready, the UPS will
switch to normal mode.
Indicator State
Rectifier indicator Green
Battery indicator Off
Bypass indicator Off
Inverter indicator Green
Output indicator Green
Status indicator Green
NOTE
In bypass mode, the load is being powered by the utility and is not receiving conditioned power
through the inverter.