UPS OPERATING INSTRUCTIONS
Power Xpert
9395 UPS (450–550 kVA) Installation and Operation Manual
164201701 Rev 3
www.eaton.com/powerquality
7-39
7.
Perform the LOAD OFF procedure in paragraph 7.4.25 on the UPS being shut
down.
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.
W
A
R
N
I
N
G
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.
7.4.21
Single UPS Shutdown using UPM Shutdown
NOTE
To shut down a single UPS, MOBs with dual auxiliary contacts must be installed and connected
according to the procedure in paragraph 5.2 on page 5-4.
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
.
6.
Press the
SELECT
pushbutton on the Bypass Command menu bar.
The UPS being shut down transfer to Bypass mode.
The
BYPASS
status indicator is illuminated. The Bypass status indicates
ON
. The
UPM status indicates
READY
. The power module remains on.
7.
On the System Status screen, select the
UPM
command. The UPS Control
Command screen is displayed.
8.
On the UPS Control Command screen, select the
UPM 1
command.
9.
Press the
CONTROLS
pushbutton on the UPS Control Command menu bar.
10.
On the UPM 1 Control Command screen, select
UPM OFF
.
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