Clear "fan shelf failed" alarm

Procedure 5-32: Clear "fan shelf failed" alarm

Overview

This procedure is used to clear a fan shelf failed alarm.

Required equipment

In addition to the equipment listed in Required equipment, the following equipment is also required:

Small phillips-head screwdriver
Small flat-blade screwdriver
Spare Fan Shelf (if necessary)
Spare Fan Filter (if necessary)
- For Alcatel-Lucent 1665 DMXtend comcode: 408 691 111

Before you begin

Prior to performing this procedure:

Refer to Before you begin in this chapter.
Refer to Electrostatic discharge in Chapter 1, Safety.

Steps

Complete the following steps to isolate and clear a fan failure.

Is the power indicator (PWR ON) LED lighted on the Alcatel-Lucent 1665 DMXtend fan shelf?

If...	Then...
Yes	Proceed to Step 4.
No	Continue with the next step.

The Fan Shelf has no power. Check power and alarm cables. If cables are not connected, install power and alarm cables to Fan Shelf and tighten screw locks.

Is Fan Shelf running and working properly (PWR ON LED lighted, FAULT LED off, CLOGGED FILTER LED off)? The Alcatel-Lucent 1665 DMXtend Fan Shelf needs four fans operating to provide the minimum required airflow.

If...	Then...
Yes	STOP! End of Procedure.
No, PWR ON LED off,	Proceed to Step 6 to replace the Fan Shelf.
No, FAULT LED lighted and/or CLOGGED FILTER LED lighted	Continue with the next step.

Replace the fan filter.

Reference:

Procedure 6-15: Replace fan filter

Is Fan Shelf running and working properly (PWR ON LED lighted, FAULT LED off, CLOGGED FILTER LED off)?

If...	Then...
Yes	STOP! End of Procedure.
No	Continue with Step 6 to replace Fan Shelf.

Unscrew the screw locks and disconnect power and alarm cable from fan unit on the Alcatel-Lucent 1665 DMXtend shelf

Back out the screws securing the fan unit.

Figure 5-1, Alcatel-Lucent 1665 DMXtend fan unit screws illustrates the location of the screws on the Alcatel-Lucent 1665 DMXtend shelf.

Figure 5-1: Alcatel-Lucent 1665 DMXtend fan unit screws

Slide the old fan unit out from the fan chassis.

Slide the new fan unit back into the fan chassis. Tighten all screws located in the front of the fan unit for the Alcatel-Lucent 1665 DMXtend shelf.

Hand tighten the #4 steel thread fasteners until "snug tight" and then 1/2 turn with a wrench/screwdriver (torque should be approximately 8 in-lb.).

Reconnect the power and alarm cables to the back of the fan unit.

End of steps