Replacement Instructions for the HEX Coupling HP Modular Cooling System

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Replacement Instructions

for the HEX Coupling

HP Modular Cooling System

About this document

This document describes the procedure for replacing the HEX

coupling of an HP Modular Cooling System (MCS).

Customers who order a replacement HEX coupling are supplied with

a kit that contains the spare HEX coupling. To replace the original

HEX coupling, remove it from the MCS unit and replace it with the

new HEX coupling 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, use extreme caution when

removing and replacing components that involve water

around the electrical wires and unsecured power inlet box.

There is great risk of electrical shock when water is used

near electricity.

WARNING: To reduce the risk of electric shock or

damage to the equipment, be prepared to clean up the

water from the disconnected water line with towels and

sponges.

Shutting off the water

1. Shut off the water flowing into the MCS unit at the facility-side

shut-off valve.

2. Confirm that no water is flowing into the MCS unit.

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 444987-001

April 2007 (First Edition)

Summary of content (5 pages)

PAGE 1
Replacement Instructions for the HEX Coupling HP Modular Cooling System About this document This document describes the procedure for replacing the HEX coupling of an HP Modular Cooling System (MCS). Customers who order a replacement HEX coupling are supplied with a kit that contains the spare HEX coupling. To replace the original HEX coupling, remove it from the MCS unit and replace it with the new HEX coupling as described in the following instructions.
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Required tools 4. To complete the following steps, you will need: • T-25 Torx driver • Flathead screwdriver • Utility knife • Water hose fitting wrench (included with your original MCS unit) • Counter hold fitting wrench (included with your original MCS unit) Pull the fan unit out toward you, and remove it from the MCS unit. Removing the fan unit 1. Open the rear MCS door. NOTE: The number of horizontal brackets varies depending on the position of the fan unit (top, middle, or bottom). 2.
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Removing the HEX coupling 1. 5. Using a utility knife, carefully trim approximately 0.64 cm (0.25 in) off the water hose. 6. Remove the HEX coupling from the water hose. Disconnect the temperature sensor cable from the heat exchanger unit. 2. Slide back the insulation on either the In or Out water hose. 3. Using the water hose fitting wrench and the counter hold wrench, disconnect either the In or Out water hose from the heat exchanger unit.
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2. 3. Using a flathead screwdriver, tighten the hose clamp. Replacing the air deflector plate 1. Reattach the ground bonding wires to the air deflector plate. 2. Align the two screw holes on the air deflector plate to the two screw holes inside the MCS unit. 3. Secure the air deflector plate to the MCS unit by tightening the two thumbscrews in the two screw holes. Connect the HEX coupling to the heat exchanger unit. Replacing the fan unit 1. Align the fan unit to the sliding rails.
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3. Tighten the two thumbscrews to secure the fan unit to the MCS frame. Operation checklist 1. If water was disconnected, restore water flow to the MCS unit at the facility-side valve. 2. Clear all old logs from the web interface to ensure that any additional alarms are current. 3. Confirm that no additional warning or alarm messages have been detected by looking at the operator display.