Replacement Instructions for the the Management Module HP Modular Cooling System

Replacement Instructions for
the Management Module
HP Modular Cooling System
About this document
This document describes the procedure for replacing the
management module of an HP Modular Cooling System
(MCS).
Customers who order a replacement management module are
supplied with a kit that contains the spare management
module. To replace the original management module, remove
it from the MCS unit and replace it with the new management
module as described in the following instructions.
HP Modular Cooling System Spare
Replacement video
Because of the difficulty of removing and replacing spare
parts, HP recommends watching the HP Modular Cooling
System Spare Replacement video. This video provides further
explanation and detail of replacement strategies and
techniques that might be helpful when attempting to remove
and replace spare parts. You can access the video on the HP
website (http://www.hp.com/go/mcs
).
Before you begin
WARNING: To reduce the risk of electric shock or
damage to the equipment, power off the MCS unit
by disconnecting the two AC power cords connected
to the power inlet box at the rear of the MCS unit
before beginning the removal and replacement
procedures.
CAUTION: To reduce the risk of the servers
overheating, open all of the rack doors of each rack
attached to the MCS unit while completing the
following procedures to increase air flow within the
rack.
Powering down the MCS unit
1. Open the front MCS door.
2. Turn off the AC1 and AC2 breakers on the AC transfer
switch.
3. Open the rear MCS door.
WARNING: To reduce the risk of electric shock or
damage to the equipment:
• Do not disable the power cord grounding plug.
The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed)
electrical outlet that is easily accessible at all
times.
• Unplug the power cord from the power supply to
disconnect power to the equipment.
• Do not route the power cord where it can be
walked on or pinched by items placed against it.
Pay particular attention to the plug, electrical
outlet, and the point where the cord extends from
the storage system.
4. Disconnect the two AC power cables from the power
connectors, labeled Primary and Secondary, on the
power inlet box.
5. Disconnect the network cable from the RJ-45 connector
on the power inlet box.
Required tools
No tools are required for this procedure.
Removing the management
module
1. Power down the MCS unit ("Powering down the MCS
unit" on page 1).
2. Open the front MCS door.
3. Disconnect the electrical cables from the management
module.
© Copyright 2007 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice. The
only warranties for HP products and services are set forth in the express
warranty statements accompanying such products and services. Nothing
herein should be construed as constituting an additional warranty. HP shall
not be liable for technical or editorial errors or omissions contained herein.
Part Number 403357-002
April 2007 (Second Edition)