Cisco Systems Cisco XR 12416 manual Top blower module Air exhaust Plenum, Air filter Room air

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Chapter 1 Product Overview

Blower Module

Figure 1-16

Cooling Air Flow

	Power supply shelf
Top blower module		Air exhaust
	(Plenum)
	Upper card cage
Air filter
Room air	Middle card cage
	Lower card cage
	(Plenum)
Bottom blower module		Air exhaust
		Air exhaust
Front	Rear	26204

To ensure that there is adequate air flow to prevent overheating inside the card cages keep the front and back of the router unobstructed. We recommend at least 6 inches (15.24 cm) of clearance.

Cisco XR 12416 Router Installation Guide

1-32	OL-13833-01

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Contents Product Overview Physical and Functional Description of RouterCisco XR 12416 Router Installation Guide Power shelf and power supplies Upper blower module Alarm card Upper card cageAir filter door Switch fabric Card cage Alarm card Lower card cageAC and DC Power Subsystems Standard AC Power ShelfStandard AC-Input Power Subsystem Power cord Retention clipOptional AC Power Shelf Optional AC-Input Power Subsystem Optional Power Shelf AC-Input Connections Power cordsFault Temp AC Power SuppliesDC Power Shelf DC-Input Power Shelf A1- A1+ A2- A2+ B2+ B2- B1+ B1 Ground DC Power Supplies 9identifies the components of a 2400 W DC power supplyChassis Card Cages Upper Card CageSwitch Fabric Card Cage Lower Card CageSwitch Fabric Overview Switch Fabric Card FunctionalitySwitch Fabric Cards Clock Scheduler CardsAlarm Card and Line Card Overview Alarm CardsPin Audio alarm Cutoff switchRoute Processor Line CardsCisco XR 12416 Router Installation Guide Performance Route Processor Overview PRP Pcmcia Card Slots and Status LEDsPRP Ethernet Ports and Status LEDs 12 Port Activity LEDs-Partial Front PanelPRP Reset Switch PRP Auxiliary and Console PortsPRP Alphanumeric Message Displays ProcessorPRP Memory Components Type Size Quantity Description LocationPcmcia slot-1 Slot-2 Behind cover U18 Bank Flash Dram DIMMsU15 PRP Sdram PRP Nvram PRP Flash MemoryBlower Module Upper and Lower Cable Management BracketsBlower Module Top blower module Air exhaust Plenum Air filter Room airProduct Overview Blower Module OL-13833-01