Liebert 610 - Manual (Page 49)

Operation
43
3.2.8 Start-Up Procedures Screen
From the Master Menu, move the highlighted cursor to START-UP PROCEDURES. Press the Select
pad and the Start-Up Procedures screen is displayed.
This two-page screen contains the steps you must follow to start-up the UPS system. The instructions
are listed so you can review them prior to performing the start-up.
Prior to this procedure, supply power to the critical load through the bypass line. Start-up the UPS
module according to the module start-up procedures. When you close the UPS input circuit breaker,
power is provided to the UPS rectifier. The module DC bus voltage ramps up to the nominal battery
voltage and the UPS inverter turns on when the DC bus reaches the proper voltage. You can then
close the battery circuit breaker and transfer the load from bypass to UPS output per instructions on
the Load Transfer Procedures Screen.
Refer to 3.4.1 - Start-Up Procedure for more details.
Figure 31 Start-up procedures screen
Figure 32 Start-up procedures screen, continued
NOTE
If the system was shut down in response to an “Emergency Off” signal (typically because of a
load fault), there may be alarm messages on the LCD screen that describe system conditions
before (or at the time of) the shutdown. Some or all of the alarm conditions may have already
been resolved. To clear these alarm messages, make sure the critical load is on bypass power
and turn off the control power (see Figures 3 and 4). Wait at least ten minutes for the control
power circuitry to completely de-energize. After ten minutes, turn control power back on and
follow the start-up procedures on the UPS screens.
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. Select "WALK-IN" screen and do the following:
a) Close module input circuit breaker. Verify that the DC voltage bar on
the display begins to gradually move to the right and the AC input current
bars do not move to the right more than 10% (40% for modules
with input filters) after the transformer inrush has subsided.
b) Verify that the output voltage bar moves to the right after the DC
bus bar has reached the 90% point. Both bars should settle near
their respective 100% levels.
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START-UP PROCEDURES (Cont'd)
c) If anything happens on the display not mentioned in (a) or (b),
immediately open the module input circuit breaker and investigate.
4. If step 3 is successful, select "MONITOR/MIMIC" screen and verify module
DC bus and output voltages are at proper nominal level. If so, close
module battery circuit breaker.
5. If bypass or static switch circuit breakers (contactor on xxxxx-xx)
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.
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