Replacing The Cooling Unit Power Cord On A Multiservice Switch 7480 - Nortel 7400 Hardware Installation

Multiservice switch

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500 Chapter 39 Hardware procedures

Replacing the cooling unit power cord on a Multiservice

Prerequisites

Procedure steps

NN10600-175 6.1S2

Replace the power cord on the cooling unit for a Nortel Networks

Multiservice Switch 7480 if it fails.

Risk of equipment damage

Replace a cooling unit power cord and restart cooling

units within 10 minutes. You can damage the CPs and

FPs and they can fail if the cooling fans are off longer

than 10 minutes.

You need a replacement cooling unit power cord with PEC NTHR66BA.

Disconnect the power cord from the "C.U. Power" connector on the back

of the shelf assembly. Use a 1/8-in. screwdriver to loosen the two screws.

See the figure "Cooling unit power cord" (page 501).

Connect the replacement power cord to the "C.U. Power" connector on the

back of the shelf assembly. Use a 1/8-in. screwdriver to tighten the two

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