Eaton Power Xpert 9395 550/275 Installation And Operation Manual page 174

2. On the UPS to shut down, press the CONTROLS pushbutton on the main menu bar. The System Status
screen is displayed.
3. On the System Status screen, select the BYPASS command.
4. Press the CONTROLS pushbutton on the System Status menu bar. The Bypass Control Command screen
is displayed.
5. On the Bypass Control Command screen, select GO TO BYPASS.
6. Press the SELECT pushbutton on the Bypass Command menu bar.
The UPS being shut down transfers to Bypass mode.
The BYPASS status indicator is illuminated. The Bypass status indicates ON. The UPM status indicates
READY. The power module remains on.
NOTE Load Off will turn off only the UPS being shut down. The remaining UPSs will remain
online supplying power to the critical load.
7. Perform the LOAD OFF procedure in paragraph
7.4.27 Using the UPS LOAD OFF Pushbutton or Command
The input, output, battery, and bypass backfeed contactors open, and the power module is turned off on
the UPS being shut down.
Logic power remains on.
8. Verify the battery breaker or disconnect for the UPS being shut down is open. If not, open the breaker.
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
NOTE If the UPS contains an input breaker (CB1), DO NOT open the breaker unless no input
feeder breaker is installed.
9. Open the input and bypass feeder circuit breakers for the UPS being shut down.
The UPS is now completely shut down.
External Communications Failure alarm is active on remaining online UPSs. This is an expected event and
will clear upon UPS restart.
7 7 . . 4 4 . . 2 2 3 3 S S i i n n g g l l e e U U P P S S S S h h u u t t d d o o w w n n u u s s i i n n g g U U P P M M S S h h u u t t d d o o w w n n
NOTE To shut down a single UPS, MOBs with dual auxiliary contacts must be installed and
connected according to the procedure in paragraph .
To shut down a single UPS:
1. Open the MOB for the UPS being shut down.
2. On the UPS being shut down, press the CONTROLS pushbutton on the main menu bar. The System
Status screen is displayed.
3. On the System Status screen, select the BYPASS command.
4. Press the CONTROLS pushbutton on the System Status menu bar. The Bypass Control Command screen
is displayed.
5. On the Bypass Control Command screen, select GO TO BYPASS.
Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201716—Rev 14
UPS Operating Instructions
on the UPS being shut down.
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