User manual

Wide Bank 28 DS3 - Release 2.4 July 2004 10-3

Maintenance

Removing and Installing Faceplates

DANGER! FIRE HAZARD. STANDARD UL 1950 REQUIRES THAT ALL ACCESS

COVERS BE REPLACED TO PREVENT FIRES FROM SPREADING TO NEARBY EQUIPMENT.

Wide Banks come either with a standard (no-fan) faceplate or with the fan faceplate option (FFO). The

faceplate must be removed and re-installed when replacing a circuit card. If a fan fails on a fan faceplate,

the entire fan faceplate must be replaced because individual fans are not replaceable.

Standard Faceplates

1. Remove the faceplate with a Phillips-head screw driver. Loosen the two captive screws on each

end of the faceplate that secure the faceplate to the Wide Bank chassis.

2. When installiing the faceplate, do not overtighten the captive screws. Carrier Access

recommends a maximum torque of 8 to 10 inch-pounds.

Fan Faceplates

CAUTION! IN HIGH-DENSITY RACKS WITH THE POWER TURNED ON, A FAN

FACEPLATE MUST BE RE-INSTALLED WITHIN 5 MINUTES TO PREVENT THE WIDE BANK

FROM OVERHEATING AND INTERRUPTING SERVICE.

NOTE: Fan faceplates can only be installed on FFO-capable Controller cards equipped

with fan power connectors.

Fan faceplates have two fans that provide extra cooling for high-density installations. Power for the

fans is derived from connections between the faceplate and the two Controller cards. These

connections also include a tachometer lead that allows the fans to be monitored and tested.

Therefore, proper alignment of the power connectors is essential when installing a fan faceplate.

Figure 10-2 Fan Faceplate Installation

Controller Card A

Controller Card B