Step 5 Turn ON power to the replacement power supply. Step 6 Check that the LED on the power supply is green. The filler panel ensures proper airflow. Note If your router was ordered with one power supply, the filler panel is factory-installed in the vacant bay. The plug-socket combination must be accessible at all times because it serves as the main disconnecting device.
Caution Never operate the router unl ess the unit is completely closed to ensure adequate cooling.
Ensure that a Listed or Certified fuse or circuit breaker 50A, minimum 60VDC is used on all current-carrying conductors. Step 2 Power ON the router. The Cisco 3660 router allows you to replace similar network modules without powering off the system or affecting the operation of other interfaces. This provides seamless operation to end users on the network, maintains all routing information, and ensures session preservation. Caution Do not hot swap WAN interface cards and voice interface cards in the network modules.