User's Manual

Life safety systems 21
Item Component Indicator color Description
7
EPO mode Key control The key control allows you to select the
EPO mode:
•
Armed
•
Test
•
Bypass
8
EPO reset White button Select to reset the EPO system
EPO modes
The EPO system has three operating modes:
• Armed—The EPO system is armed and operational.
• Test—The EPO system is in test mode and will not power off the HP POD 240e NA in the events that
would normally trigger an EPO.
• Bypass—The EPO system is non-operational and will not power off the HP POD 240e NA in any events
that normally trigger an EPO.
For more information, see "ECS touchscreen and EPO indicators (on page 20)."
The illuminated external EPO status indicator displays the current EPO mode.
• White—The EPO system is armed and operational.
• Red—There has been an EPO event and the HP POD 240e NA is shutdown.
• Yellow—The EPO system is operating in test mode.
EPO accidental activation
To help prevent accidentally pressing the EPO button and activating the EPO system, each EPO button is
covered with a clear Lexan cover.
Battery backup during an EPO event
The following components are equipped with a UPS to help be sure that service is not interrupted during a
loss of power to the HP POD 240e NA:
• Environmental control system (on page 34)
• VESDA air sampling smoke detection system (on page 22)
• Fire detection system (on page 22)
• Lighting (on page 33)
IMPORTANT: All critical IT UPS devices with batteries that exceed 700VA must be connected to
the HP POD 240e NA EPO system, to be sure that the UPS batteries are disconnected during an
EPO event. For more information about connecting UPS devices to the EPO system, see the HP
Performance Optimized Datacenter 240e NA Maintenance and Service Guide.