141
9395P 250 kVA / 275 kVA / 300 kVA
User’s and Installation Guide
7.
6
.23
Single UPS Shutdown using UPM Shutdown
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
.
11.
Press the
SELECT
pushbutton on the UPM 1 Command menu bar.
The UPM status indicates SHUTDOWN
.
The input, output, and battery contactors open,
and the
power
module is turned off. The remaining UPMs supply the critical load.
12.
Repeat Steps 8 through 11 selecting
UPM 2
to shut down UPM 2.
13.
If the UPS is a three UPM model, repeat Steps 8 through 11 selecting
UPM 3
to shut
down UPM 3.
14.
If the UPS is a Plus 1 model or an upgraded 825/550, repeat Steps 8 through 11 selecting
UPM 4
to shut
down UPM 4.
15.
Verify the battery breaker or disconnect for the UPS being shut down is open. If not,
open the breaker.
16.
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.
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.
WARNING
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.
Summary of Contents for Power Xpert 9395P 250 kVA
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