Operating Procedures - Liebert Nfinity User Manual

Start-up and Initialization
Follow these steps in order to start up the UPS.
1. Ensure the manual bypass switch is in UPS
position. Close Input Circuit Breaker (CB1)
and close the Control Enable Switch (SW2).
You should see the following on the LCD
display window:
2. Press button.
3. Press to access the main menu.
Shutting down the UPS
Use the following procedure to power down the
UPS.
1. Press to disable power from the
connected equipment.
2. Verify request to disable the output by
pressing .
3. Turn off the Enable Switch (SW2). Open the
Input Circuit Breaker (CB1).

Operating Procedures

Manual Transfer to Bypass
In the event of a UPS overload or failure, the
UPS will transfer to bypass via its automatic
bypass switch.
manually transfer the UPS to bypass by
operating the manual bypass switch located
behind the lowest front cover to the bypass
position. To transfer the UPS from bypass to
normal mode, simply operate the manual bypass
switch back to the UPS position.
It should be noted that the load is not protected
from utility interruptions when in bypass mode.
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It is possible for the user to