Liebert 1000kVA - Manual (Page 93)

Operation
87
e. If the UPS Bypass line is available, but not yet supplying power to the load, close the circuit
breakers (external to the UPS) required to provide power to the critical load equipment.
Follow the three steps shown below.
1. Verify the Bypass Input Breaker (BIB) and System Bypass circuit breakers are closed.
2. Close the Maintenance Isolation Breaker (MIB).
3. Open the Maintenance Bypass Breaker (MBB).
Observe the Monitor/Mimic Display screen to confirm that the UPS Bypass line is energized and sup-
plying power to the critical load equipment.
At the System Control Cabinet (SCC), press the Select pad to put the Master Menu on the LCD.
Move the highlighted cursor to Start-Up Procedures (use the Up and Down pads). Press the Select
pad to display the Start-Up Procedures screen. Return to this screen whenever you need to see the
start-up instructions.
Perform a module start-up procedure at each module in your UPS system until all required modules
are on-line. Refer to 3.4.2 - UPS Module Start-Up for instructions. After the module start-up is com-
plete, return to the SCC (see 3.4.3 - Load Transfer Procedures) to complete your UPS system
start-up.
Figure 64 SCC start-up procedures screen
!
CAUTION
Be sure to operate Maintenance Bypass circuit breakers in the proper sequence.
START-UP PROCEDURES
1. Wait approximately two (2) minutes before attempting any other action .
2. Select "SYSTEM CONFIGURATION" screen to verify that the correct model number is
displayed.
3. Go to the modules(s) and follow the module "STARTUP PROCEDURES".
4. Select "MONITOR/MIMIC" screen, verify that the output voltages are at the
proper nominal level and correct number of modules online is displayed.
5. If the bypass or static switch breakers are open, refer to Start-up Procedures
in the UPS manual for instructions on closing these breakers.
6. System is now ready to assume load. Select "LOAD TRANSFER PROCEDURES"
screen for this procedure.
MASTER MENU SELECT :
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