1027212
UPS 225 - 275 kVA/300kVAPF0.8
107
Revision E
User’s and Installation Guide
7.4.23 Transfer from Normal to Bypass mode and shut down all UPMs
To transfer the critical load to Bypass mode and shut down all UPMs:
1.
Transfer the critical load to bypass by performing the procedure in Figure 7.4.11 on page 101.
2.
Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
3.
On the System Status screen, select the
UPM
command. The UPS Control Command screen is
displayed.
4.
On the UPS Control Command screen, select the
UPM 1
command.
5.
Press the CONTROLS pushbutton on the UPS Control Command menu bar. The UPM 1 Control
Command screen is displayed.
6.
On the UPM 1 Control Command screen, select
UPM OFF
.
7.
Press the SELECT pushbutton on the UPM 1 Command menu bar.
The UPM status indicates
READY
. The input, output, and battery contactors open, and the power
module remains on.
8.
To turn off the power module, press the CONTROLS pushbutton on the UPS Control Command
menu bar. The UPM 1 Control Command screen is displayed.
9.
On the UPM 1 Control Command screen, select
UPM OFF
.
10. Press the SELECT pushbutton on the UPM 1 Command menu bar.
The UPM status indicates
SHUTDOWN
. The power module is turned off.
Logic power remains on.
11. If the UPS is a multimodule UPM model, repeat Steps 4 through 10 selecting UPMs 2, 3 and 4 to
shut down UPMs 2, 3 and 4.
12. Repeat Steps 2 through 11 for each UPS in the distributed bypass system.
WARNING
Power is present inside the UPS cabinet.
7.4.24 Single UPM shutdown
To shutdown a single UPM:
1.
Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
2.
On the System Status screen, select the UPM Command. The UPS Control Command screen is
displayed.
3.
On the UPS Control Command screen, select the UPM to shutdown.
4.
Press the CONTROLS pushbutton on the UPS Control Command menu bar. The UPM Control
Command screen is displayed.
5.
On the UPM Control Command screen, select
UPM OFF
.
6.
Press the SELECT pushbutton on the UPM Command menu bar.
The UPM status indicates
READY
. The input, output, and battery contactors open, and the power
module remains on. The remaining UPMs supply the critical load.
7.
To turn off the power module, press the CONTROLS pushbutton on the UPS Control Command
menu bar. The UPM Control Command screen is displayed.
8.
On the UPM Control Command screen, select
UPM OFF
.
9.
Press the SELECT pushbutton on the UPM Command menu bar.
The UPM status indicates
SHUTDOWN
. The power module is turned off. The remaining UPMs con-
tinue to supply the critical load.
Logic power remains on.