Installation, Maintenance, and Upgrade

Power the Unit via the AC Power Supply

Safety Warnings

Take note of the following warning:


Warning

Ensure the unit's power source(s) have been turned OFF before servicing.

Note

This unit is designed for Common Bonding Network (CBN) installations only.

This unit is suitable for installation in network telecommunication facilities and where the National Electrical Code (NEC) applies.

To power the unit:

Before you begin

  • Make sure that the chassis ground is connected on the chassis before you begin installing the AC power supply. See Ground the Chassis for the procedure.


Note

Powering Options are ordered separately.

Procedure

Step 1

Connect the AC plug to the AC appliance coupler.

Step 2

Plug the power cord into a suitable power outlet.

Step 3

Secure the power cord through the retainer clip.

Warning

 

The AC plug must be connected to a properly grounded AC outlet.

Power the Unit via the DC Power Supply

Safety Warnings

Take note of the following warnings:


Warning

Ensure the unit's power source(s) have been turned OFF before servicing.

An approved external power supply switch or circuit breaker must be installed in the supply lines and be readily accessible to act as a disconnect device. The switch or circuit breaker must disconnect all poles simultaneously and be rated 12 A max.

Connect the protective earthing terminal(s) on the power supplie(s) to the same protective earthing point as used to ground the unit.

DC PSU must be connected to Class 1 Power Source (ES1) only.

The DC Battery Return (BR) input terminal(s) of the unit are not connected to the equipement frame or grounding means of the equipement and must be configured as isolated DC Return (DC-I) in compliance with GR-1089-CORE requirements.


Note

This unit is designed for Common Bonding Network (CBN) installations only.

This unit is suitable for installation in network telecommunication facilities and where the National Electrical Code (NEC) applies.

To power the unit:

Before you begin

  • Make sure that the chassis ground is connected on the chassis before you begin installing the DC power supply. See Ground the Chassis for the procedure.

Procedure

Step 1

Establish the proper connections between the wires and the power sources.

Step 2

Connect wires to the terminal block connector of the power supply.

Note

 

Applicable wire range: 0.75 to 2.5 mm2 (18 to14 AWG)

Connect to the Network

Establish the Ethernet connections to the unit by plugging the appropriate media types to the proper ports of the unit (see the numbered diagram of the front panel).


Note

For more information, refer to the Cisco Provider Connectivity Assurance Sensor F25 User Material.

Remove and Replace the Fan Module

This Method of Procedure describes how to replace a fan in the event of a fan failure.

If a fan failure is reported, it is recommended to plan for its replacement within seven (7) days. Moreoever, as a preventative measure, it is recommended to replace all fans in the event of a failure.

The alarm must be ignored while the fan is being replaced. It is therefore recommended this procedure be performed during a proper maintenance window.


Caution

Removing both dual fan modules exposes the chassis to no airflow. The chassis operates for 30 seconds after either one or both modules are removed. All modules must be reinserted within 30 seconds to avoid overheating the chassis. If you wait longer than 30 seconds, the chassis may power off automatically to prevent damage to components. The chassis does not power up and boot properly if the dual fan modules are missing.


Caution

The fan modules must be replaced one at a time.


Note

The replacement of the fan modules should be carefully planned, as the procedure must be completed within 15 minutes to reduce the thermal impact on the unit.

Safety Warnings

The following are safety guidelines that you must follow for personal safety and to operate the units correctly. All personnel working directly on the units must be trained, authorized and qualified to perform the tasks described herein. You must read and follow these guidelines before you begin.

  • Power to the unit remains on throughout this process.

  • To avoid personal injury, equipment damage and/or service interruptions, keep your fingers away from the fan's moving parts.

  • This equipment is sensitive to electrostatic discharge (ESD). When handling, ensure you wear a properly functioning heel grounder and/or an anti-static wrist strap or another personal-grounding device.

  • Incorrect handling may void warranty.

Take note of the following warnings:


Warning

Statement 1073—No User-Serviceable Parts

There are no serviceable parts inside. To avoid risk of electric shock, do not open.

Warning

Statement 1093—Avoid Sharp Edges

Risk of personal injury. Avoid sharp edges when installing or removing replaceable units.

Replace the Fan Module

To replace the fan module:

Procedure

Step 1

Identify which fan on the unit has malfunctioned.

Step 2

Remove the two screws that are holding the fan module to the unit’s chassis and remove the fan.

Figure 1. Remove the Fan

Step 3

Put the new fan module in place by keeping the same orientation as the original one.

Step 4

Secure the new fan module to the chassis by replacing both screws.

Step 5

Ensure that the fan assembly is fully functional.

Step 6

(Optional) To replace the other fans as a preventative measure, continue with Optional Preventative Maintenance Fan Replacement.

Optional Preventative Maintenance Fan Replacement

To perform an optional fan preventive maintenance:

Procedure

Step 1

Remove the two screws that are holding the fan module to the unit’s chassis and remove the fan.

Step 2

Put the new fan module in place by keeping the same orientation as the original one.

Step 3

Secure the new fan module to the chassis by replacing both screws.

Step 4

Ensure that the fan assembly is fully functional.