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7 Push the power supply in until the latch snaps into place.
Figure 49: Installing a 300 W AC Power Supply
Caution
Do not slam the power supply into the router.
8 Connect the AC power cord to the input connector on the power supply and rotate the wire clip into
place over the power cord connector.
9 Connect the other end of the power cord to an AC power outlet.
Warning
Always be sure that the source outlet is properly grounded before plugging the AC power
cord into the AC power supply.
Replacing a DC Power Supply
Two 300 W DC power supplies are available for use with the E4G-400:
•
Model 10933 can connect to either a –48 V or a +24 V power source.
•
Model 10934A can connect only to a –48 V power source.
We recommend using a Model 10933 power supply, connected to a +24 V power source.
In a redundant power configuration, you can replace one DC power supply without powering down the
router.
Before you start, have the following items on hand:
•
#1 Phillips screwdriver
•
Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
•
Thermal protective gloves (required for removing a power supply)
Warning
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
When replacing a power supply unit, be sure to observe all of the safety recommendations in
Power Supply Units and Connecting Power
E4G Routers Hardware Installation Guide
on page 81.
Maintaining Your Equipment
Installing
66
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