Service manual

Installation ProceduresConnect an Emergency Power Off Switch
990-1467C InfraStruXure System – Service Manual – Installation and Start-Up 35
3. Test the EPO switch to ensure that it is wired and working correctly:
a. Place the Arm/Test rocker switch in the Test position. The EPO state LEDs will be off and the
PDU display interface will show the following alarm (in addition to any other active alarms):
b. Engage the EPO switch. (If your switch is momentary, engage it with one person watching the
EPO state LEDs, and another at the EPO switch.)
c. Observe the EPO LEDs. If the switch is wired and working properly, when the switch is engaged,
both of the EPO state LEDs are red.
d. If the test was successful, place the Arm/Test rocker switch back to the Arm position. The PDU
display interface will clear the EPO test mode alarm. If the test was not successful, see the
troubleshooting chart:
e. Repeat this test for each EPO switch installed.
4. Ensure that the Arm/Test rocker switch is in the Arm position on the monitoring unit.
Problem Action
Neither state LED was red when
EPO switch was engaged
• Check the wiring to your EPO switch.
• Check to make sure the EPO DIP switch
configuration is correct for your switch
(NO or NC). See step 2 on the previous page for
proper configuration instructions.
Only one of the state LEDs was
red when EPO switch was
engaged
• Check to make sure the EPO DIP switch
configuration is correct for your switch
(NO or NC) and test again. See step 2 on the
previous page for proper configuration
instructions.
• If the switch is configured correctly and both
LEDs are not red after testing again, contact
customer support at a number on the back cover
of this manual.
EPO Ready To Test
Active Alarm xxofxx