Unique Broadband Systems Ltd. DRU1KW User Manual

 

SX03-20000-01-M01 6-40 

6.5.11.2  Fan Box Installation 
 

The replacement fan box should be installed in the following sequence: 
 

1.  Before the replacement fan box is installed, ensure that the weatherproof gasket is 

placed on the top of the cabinet where the fan box will be installed – see Figure 

2.  Using two handlers, one located on each side of the cabinet, carefully lift the fan box 

and place it over the opening in the top of the cabinet. 

3.  Replace the eight (8) 1/4-20 socket head cap screws (with 1/4” lock washers and flat 

washers) which secure the fan box to the cabinet – see Figure 6-25.

  A torque rating 

of 45.6 Inch Lbs. must be used to tighten the screws.

 

4.  Route the fan box AC power cables to the HPA compartment frame backplane and 

secure the AC power cables to the cable tie mounts located in the cabinet – see 
Figure 6-24. 

5.  Re-connect the fan box AC power cables to the FAN 1 / FAN 2 or FAN 3 / FAN 4 panel 

mount connectors located on the HPA compartment frame backplane – see Figure 

6.  Using two handlers, one located on each side of the cabinet, carefully lift the cabinet 

hood and place on top of the cabinet hood stands. 

7.  Secure the top hood in place by replacing the four (4) lifting eyes – see Figure 6-22. 
8.  Switch ON the HPA PSU circuit breakers, located on the HB cabinet PDU or LB cabinet 

PDU – please refer to section 2.3.4 or 2.3.5 for breaker designations. 

9.  Using the HBE GUI, place the HB sub-system in broadcast mode or, using the LBE 

GUI, place the LB sub-system in transmit_only mode. 

10. Close the HPA compartment rear door and the electronics compartment front door.