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3.4 Orient Display for Installation
The Liebert PSI XR features a rotating display that may be oriented for either tower or rack
installations.
To set the display for your installation, pull out on the display and rotate it until it is oriented
correctly, then press it into the UPS until it is seated.
Figure 9 Orienting the UPS display
3.5 Charge Batteries and Perform Battery Startup
Before connecting input power or connecting the load, Emerson recommends these steps:
• Charge the battery for at least 8 hours.
• Start the UPS on battery to ensure the battery is fully functional and charged.
• Turn the unit Off and proceed to 3.6 - Connect Input Power and Load.
3.6 Connect Input Power and Load
Connect input power to the UPS, then plug the equipment into the outlets on the rear of the UPS.
These UPS outlets provide battery backup and surge protection to the equipment when utility power
fails, spikes or sags (see Figure 10).
Figure 10 Connect input power and load
DC 24V
OUTPUTINPU T
EPO
VOLTAGE=110V
VOLTAGE=120V
VOLTAGE=127V
2 1
FUNCTION