Thomas & Betts 9395 - Manual (Page 57)

UPS 225 - 275 kVA
User’s and Installation Guide
1027212
Revision B 57
Figure 5-6. System controls screen 2
5.2.7 Load off screen
The load off screen appears when the LOAD OFF pushbutton is selected from the main menu
bar or System Controls menu bar. This screen allows the LOAD OFF process to be aborted if
the LOAD OFF pushbutton was pressed accidentally. Figure 5-7 shows the Load Off screen. For
detailed information about using the LOAD OFF and shutdown screens, see Chapter 5, “UPS
operating instructions.”
Figure 5-7. Load off screen
5.3 Operation
5.3.1 Starting the UPS in normal mode
To start the UPS system:
1. If the UPS contains input breaker CB1, verify that input breaker CB1 is open.
2. Close the UPS input feeder circuit breaker.
3. Close the UPS bypass input feeder circuit breaker.
4. Observe the UPS control panel display becoming active, indicating logic power.
5. Press the CONTROLS pushbutton on the main menu bar. The system controls screen
appears.