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ACX7348 Rack and Cabinet Requirements

SUMMARY You must install the ACX7348 router on a rack or in a cabinet that meets specific dimension, strength, and airflow requirements.

Rack Requirements for ACX7348 Routers

You can mount the ACX7348 routers on two-post racks or four-post racks.

The size, strength, and location of the rack must accommodate the router's weight and external dimensions.

Table 1 provides the rack requirements and guidelines for ACX7348 routers.

Table 1: Rack Requirements for ACX7348 Routers

Rack Requirement

Guidelines

Rack type

Use a two-post or four-post rack that provides bracket holes or hole patterns spaced at 1 U increments (1.75 in. or 4.45 cm), and ensure that the rack meets the size and strength requirements to support the weight of the router.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

Mounting bracket hole spacing

Ensure that the holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm) so that the router can be mounted in any rack that provides holes spaced at that distance.

Rack size and strength

  • Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D), published by the Electronics Industry Association.

  • Use an 800-mm rack as defined in the four-part Equipment Engineering (EE) European telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4), published by the European Telecommunications Standards Institute (http://www.etsi.org).

  • Ensure that the rack rails are spaced widely enough to accommodate the external dimensions of the router chassis. The outer edges of the front-mounting brackets extend the width to 19 in. (48.26 cm).

  • Ensure that the spacing of rails and adjacent racks allows for proper clearance around the router and rack.

Rack connection to building structure

  • Secure the rack to the building structure.

  • If earthquakes are a possibility in your geographical area, secure the rack to the floor.

  • Secure the rack to the ceiling brackets and to the wall or floor brackets for maximum stability.

Cabinet Requirements for ACX7348 Routers

You can mount an ACX7348 router in an enclosure or cabinet that contains a two-post or four-post 19-in. open rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D), published by the Electronics Industry Association.

Table 2 provides the cabinet requirements and guidelines for an ACX7348 router.

Table 2: Cabinet Requirements and Specifications

Cabinet Requirement

Guidelines

Cabinet clearance

The minimum total clearance inside the cabinet between the fan tray (excluding the fan tray handle) and inside of the rear door is 2.36 in. (6 cm).

Cabinet airflow requirements

When you mount the device in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.

  • Ensure adequate cool air supply to dissipate the thermal output of the device or devices.

  • Ensure that the hot air exhaust of the chassis exits the cabinet without recirculating into the device. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top ensures the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements help remove the hot air exhaust.

  • Install the device in the cabinet in a way that maximizes the open space on the side of the chassis that has the hot air exhaust.

  • Route and dress all cables to minimize the blockage of airflow to and from the chassis.

  • Ensure that the spacing of rails and adjacent cabinets is such that there is proper clearance around the device and cabinet.

  • A cabinet larger than the minimum required provides better airflow and reduces the chance of overheating.

Securing cabinet to building structure

  • If your geographical area is earthquake-prone, secure the cabinet to the floor.

  • Secure the cabinet to the ceiling brackets as well as wall or floor brackets for maximum stability.