Cisco Model D-PCG1000 PowerKEY CAS Gateway Installation Guide

 

90 

4014102 Rev C 

The GQAM modulator has three dual fan units on the side panel. Each of these units 
contains two fan rotors. You must replace the entire dual fan unit if one of the fan 
rotors should fail. The fan units are designed to be “hot swappable,” meaning that 
you do not necessarily have to power down the GQAM to replace a fan unit that has 
failed. 

Important! In order to hot swap a dual fan unit, you must have the following: 

 

Sufficient length in all cords and cables so you can slide the device forward in the 
rack far enough to fully access the dual fan units on the side panel. 

 

The ability to externally support the GQAM with a cart or table or with the 
assistance of another person. 

Note: If you do not have sufficient length in all cords and cables, you will have to 
power off the unit, disconnect all cords and cables, and completely remove the 
GQAM from the rack to replace a dual fan unit that has failed. 

This section provides the procedure for replacing a dual fan unit on the GQAM by 
either hot swapping the fan unit, or by powering off, disconnecting, and removing 
the GQAM completely from the rack. 

 

If you cannot hot swap the dual fan unit, you need to replace the fan unit during a 
maintenance window. This is necessary because you will have to power off and 
disconnect the GQAM to replace the fan unit, thereby temporarily disrupting all 
broadcast services configured and provisioned on this GQAM. 

Important! Schedule the maintenance window to replace the fan as soon as possible 
to avoid damage to the GQAM. 

 

The fans are located on the GQAM side panel as follows: 

 

Fans 1 and 2 are located nearest to the back panel. 

 

Fans 3 and 4 are the middle fans. 

 

Fans 5 and 6 are located nearest to the front panel.