Field Replaceable Units
Page 118 7450 ESS-7
POWER MODULES
This section covers:
• Warnings and Notes on page 118
• DC Power on page 120
→ Removing a DC PEM on page 120
→ Replacing a DC PEM on page 122
• AC Power on page 124
→ Removing an AC PEM on page 126
→ Replacing an AC PEM on page 127
WARNINGS AND NOTES
Danger:
• Only trained and qualified personnel should install or replace this equipment and connect the
power cables.
• Make your ground connections first.
• Even though the power modules are hot swappable, for extra safety, you can turn off power at
the power source and disconnect and unplug the power cables before you remove and replace
a power module.
• You must use power cables which meet local electrical code requirements.
Caution:
• There are no handles or hand grips on the 7450 ESS-7. Lift the chassis from underneath. Do
not lift the by the internal chassis frame.
Warning:
• Do not install equipment that appears to be damaged.
• Blank panels and faceplates are required in all empty card and component slots to prevent
excess dust accumulation and to help control airflow and electromagnetic interference.
Faceplate blanks do not have board components or connector pins.
• Power supply modules are hot insertable. If power cables are plugged into a circuit panel,
always use caution when removing and replacing field replaceable components.
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