HP MCS 5042 Installation Manual

HP mc-Series 5042 Rack Options

HP assumes you are

Part Number: 669031-003

Installation Guide

Abstract

This document is for the person who installs racks and rack products. This procedure is performed only by trained personnel.
qualified in performing installations and trained in recognizing hazards in rack products.

March 2013
Edition: 3

© Copyright 2012, 2013 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.

Contents

About this guide ........................................................................................................................... 5

HP mc-Series 5042 Rack options installation guide ........................................................................................ 5

Safety information ..................................................................................................................................... 5

Optimum environment and site preparation .................................................................................................. 5

MCS 5042 options ....................................................................................................................... 7

Ordering MCS 5042 options ...................................................................................................................... 7

Automatic Door Release Kit ............................................................................................................ 8

Overview ................................................................................................................................................. 8

Kit contents ..................................................................................................................................... 8

Required tools ............................................................................................................................... 10

Installing the front automatic door release kit ............................................................................................... 11

Installing the front electromagnetic lock ............................................................................................ 11

Installing the front strike plate .......................................................................................................... 13

Installing the front door release spring .............................................................................................. 15

Installing the front magnetic lock cable ............................................................................................. 17

Operation of the front door after installing the automatic door release kit .............................................. 19

Installing the rear automatic door release kit ............................................................................................... 19

Removing the rear door lock rods .................................................................................................... 19

Installing the rear electromagnetic locks ............................................................................................ 20

Installing the rear strike plates ......................................................................................................... 22

Installing the rear door release springs ............................................................................................. 23

Installing the rear magnetic lock cable .............................................................................................. 24

Hook Up Kit ............................................................................................................................... 26

About this kit .......................................................................................................................................... 26

Kit contents ................................................................................................................................... 26

Required tools ............................................................................................................................... 27

(Optional) Installing additional components to your facility water line ............................................................. 27

Orientation of the hose ............................................................................................................................ 27

Routing the hose through the MCS 5042 .................................................................................................... 28

Installing the 90° elbow assembly.............................................................................................................. 30

Attaching the main hoses to the MCS 5042 through an opening in the raised floor ......................................... 31

Attaching the main hoses to the MCS 5042 above the floor .......................................................................... 32

Attaching the main hoses to the MCS 5042 through the top of the unit ........................................................... 33

(Optional) Shortening the hoses ................................................................................................................ 34

Attaching the main hose to the facility water line ......................................................................................... 36

(Optional) Attaching the warning label to the hose ...................................................................................... 37

Rack Expansion Kit ..................................................................................................................... 38

About this kit .......................................................................................................................................... 38

Kit contents ................................................................................................................................... 38

Required tools ............................................................................................................................... 38

Installing the expansion rack ..................................................................................................................... 39

Acronyms and abbreviations ........................................................................................................ 50

Documentation feedback ............................................................................................................. 51

Contents 3

Contents 4

About this guide

HP mc-Series 5042 Rack options installation guide

This installation guide includes instructions for installing the option kits that are compatible with the HP
mc-Series 5042 Rack.

For more information, see the HP mc-Series 5042 Rack User Guide on the HP website

Safety information

(http://www.hp.com/go/rackandpower).

The HP mc-Series 5042 Rack is tested to the maximum pressure (PS) of 8 bar (116 PSI) without fluid trapped
inside by closed, external valves.

If valves are installed on the external pipe work that might trap fluid inside the MCS 5042 rack, you must take
special precautions. To prevent severe plumbing failure due to extreme pressure, use an expansion tank with
a preinstalled safety valve in the plumbing circuit connected to the unit.

Optimum environment and site preparation

CAUTION: Contaminated water might cause decreased cooling capacity or disruption in

service. The water flowing into the MCS 5042 unit must meet the guidelines stated in the HP
mc-Series 5042 Site Preparation Guide. The MCS 5042 warranty does not cover damage

To provide optimum performance with minimum maintenance for your unit, environmental requirements must
be met.

The HP mc-Series 5042 Site Preparation Guide provides information about planning your unit configuration
efficiently and organizing your site location before delivery of your MCS 5042 unit.

To locate the latest version of the HP mc-Series 5042 Site Preparation Guide:

1. Go to the HP website (http://www.hp.com/go/rackandpower).

2. Select Rack and Rack Options.

3. Select Modular Cooling System.

4. Select Support and Documents.

5. Select Manuals.

caused by contaminated water.

IMPORTANT: Before you begin the installation process, review the HP mc-Series 5042 Site

Preparation Guide.

6. Select and download the HP mc-Series 5042 Site Preparation Guide.

To route water lines to your MCS 5042 unit, use one of the following methods:

• Through an opening in the raised floor

About this guide 5

• Lying on top of the floor

• Through the top of the MCS 5042 unit

For more information on routing the water lines, see the HP mc-Series 5042 Hook Up Kit Installation
Instructions.

About this guide 6

MCS 5042 options

Ordering MCS 5042 options

HP provides several option kits to complement or complete your MCS 5042 rack. For more information about
ordering MCS 5042 options, see the HP website, or contact your nearest HP authorized reseller.

MCS 5042 option kit Part number Description

Automatic Door Release Kit (on
page 8)

Hook Up Kit (on page 26)

Included with the
MCS 5042

BW971A Required for connection between facility water and the

Enables the rack doors to open automatically to maintain
air flow and cooling to the servers in the event of an
emergency.

MCS 5042.

Rack Expansion Kit (on page 38)

BW973A Enables the connection of a secondary rack of the same

height and depth to the MCS 5042, enabling the cooling
of both racks.

MCS 5042 options 7

Automatic Door Release Kit

•

•

Overview

The HP mc-Series 5042 is designed with a safety mechanism in the event that the HP mc-Series 5042 Rack
experiences a chilled water system pressure or cooling loss. If the MCS 5042 rack experiences such a loss,
the electromagnetic locks on the front and rear doors immediately deactivate. Release springs open the rack

Kit contents

doors and allow air flow and cooling from the room to reach the servers in the rack.

• Front door kit contents (on page 8)

• Rear door kit contents (on page 9)

• Electromagnetic lock assembly contents (on page 10)

Front door kit contents

Callout Description (Quantity)

1
2
3

Electromagnetic lock bracket (1)
Door release spring (1)
Mounting hardware (1)

M5 x 10-mm pan head screw (4)
M5.5 x 13-mm self-tapping screw (4)

Automatic Door Release Kit 8

Callout Description (Quantity)

4
5
6
7

8
9
Not shown

Electromagnetic lock assembly (1)
Spacer block (1)
Strike plate bracket (2)
2-inch x 1-inch plastic adhesive-backed

strip (1)
Washer (4)
Electromagnetic lock cable (1)
Adhesive cable management clip (6)

Rear door kit contents

Automatic Door Release Kit 9

•

•

Callout Description (Quantity)

1
2
3

Electromagnetic lock bracket (2)
Electromagnetic lock cable (1)
Mounting hardware (1)

M5 lock nut (8)
M5 x 12-mm flat-head screw (4)

4
5
6
7
Not shown

Electromagnetic lock assembly (2)
Door release spring (2)
Strike plate bracket (2)
Washer (8)
Cable tie wrap (12)

Electromagnetic lock assembly contents

Callout Description (Quantity)

1
2
3
4
5
6
7

Required tools

The following tools are required for installation:

• T-25 Torx screwdriver

• T-30 Torx screwdriver

• Flathead screwdriver

Magnet (1)
Strike plate (1)
Rubber washer (1)
Roll pin (2)
Flathead screw (1)
Black cap screw (2)
Allen wrench (1)

Automatic Door Release Kit 10

• M5 socket screwdriver

HP recommends keeping your latch handle locked and using the fixed door handles

• Allen wrench (included in the kit contents)

• Measuring tape

A T screwdriver is optional to ease installation.

Installing the front automatic door release kit

1. Using a T-30 Torx screwdriver, remove the existing front door lock catches by removing the screw from

each of the two front door lock catches.

2. Install the front electromagnetic lock ("Installing the front electromagnetic lock" on page 11).

3. Install the front strike plate ("Installing the front strike plate" on page 13).

4. Install the front door release spring ("Installing the front door release spring" on page 15).

5. Install the front magnetic lock cable ("Installing the front magnetic lock cable" on page 17).

Installation is complete.

CAUTION:

above and below the latch to open your rack front door.

Installing the front electromagnetic lock

1. On the front rack frame, count up from the bottom to locate the 40

electromagnetic lock bracket with these holes (1).

th

and 42nd holes. Align the

Automatic Door Release Kit 11

2.

To attach the electromagnetic lock bracket onto the front rack frame, use a T-25 Torx screwdriver to
insert and tighten two M5.5 self-taping screws (2).

3. To secure the electromagnetic lock bracket, pull the bracket forward, and then tighten the thumbscrew

on the top of the bracket.

4. Position the electromagnetic lock on top of the electromagnetic lock bracket so that the magnetic lock

cable connector hangs from the bottom of the assembly.

Automatic Door Release Kit 12

5.

The MCS 5042 comes with two different strike plate brackets for the front. One bracket

To attach the electromagnetic lock to the electromagnetic lock bracket, use the Allen wrench to insert
and tighten two black cap screws.

Installing the front strike plate

NOTE:

is for the MCS installed with a HP 10642 G2 (1,200 mm deep) IT rack and is labeled with an
"A." The other bracket is for the MCS installed with a HP 642 (1,200 mm) deep IT rack and is not

You can install the front strike plate using two options:

• With the full lock position, you attach the strike plate to the electromagnetic lock directly. This option

• With the half lock position, you partially attach the strike plate to the electromagnetic lock. This option

labeled.

offers a very high resistance by securing and locking the front rack door.

offers less resistance by only securing, not locking, the front rack door.

Automatic Door Release Kit 13

To install the front strike plate:

1. Using a T-25 Torx screwdriver, remove the two M5.5 x 10-mm screws from the inside of the rack front

door.

2. Align the strike plate bracket to the holes on the rack front door.

3. Using a T-25 Torx screwdriver, insert and then tighten the two M5.5 x 13-mm screws to attach the strike

plate bracket to the rack.

4. Assemble the strike plate:
a. Insert a flathead screw through the strike plate (2).
b. Slide a rubber washer onto the flathead screw in between the strike plate and strike plate bracket

(3).

NOTE: Do not tighten the strike plate too tightly to the strike plate bracket. The strike plate should

float on the rubber washer providing flexibility to align with the electromagnetic lock.

5. Install the strike plate.

Automatic Door Release Kit 14

o

To install the strike plate in the full lock position, align the strike plate assembly directly to the strike
plate bracket, inserting the flathead screw into the third hole from the top of the strike plate bracket.
Use the Allen wrench to attach the strike plate assembly to the strike plate bracket by tightening the
flathead screw.

o To install the strike plate in the half lock position, align the strike plate assembly to approximately

3/4 of the strike plate bracket, inserting the flathead screw into the fourth hole from the top of the
strike plate bracket. Use the Allen wrench to attach the strike plate assembly to the strike plate
bracket by tightening the flathead screw.

Installing the front door release spring

1. Align the U-loop release spring with the holes in the spacer block.

2. Using a T-25 Torx screwdriver, insert and tighten two M5 x 10mm pan head screws into each hole in

the spacer block.

3. Align the spring on the block with the two holes on the door.

Automatic Door Release Kit 15

4.

Using a T-25 Torx screwdriver, insert and tighten two M5 x 10 mm pan head screws into each hole on
the door.

5. Close the front door, and then verify that the release spring comes in contact with the frame.

6. Install the plastic adhesive backed strip to the frame by removing the adhesive backing and placing the

plastic strip approximately 155 mm (6.1 inches) to the left of the end of the frame.

Automatic Door Release Kit 16

Installing the front magnetic lock cable

1. Plug the magnetic lock cable into the cable connector hanging from the bottom of the electromagnetic

lock assembly.

Automatic Door Release Kit 17

2.

Using the adhesive cable management clips, route the magnetic lock cable up and across the front of
the rack to the panel connector on the MCS 5042 rack.

3. Plug the other end of the magnetic lock cable into the panel connector on the transfer switch.

4. Using the remaining adhesive cable management clips, secure any excess cable.

Automatic Door Release Kit 18

Operation of the front door after installing the automatic door
release kit

After you have installed the automatic door release kit to the front door of your rack, to avoid mishandling the
latch handle of your door, HP recommends that you follow these guidelines when opening your rack front
door.

1. Set your magnetic locks into the half lock position.

2. Insert the key into the latch handle of your rack front door, and lock the latch handle.

3. Use the fixed door handles above and below the latch handle to pull your rack front door open.

Installing the rear automatic door release kit

1. Install the rear electromagnetic locks ("Installing the rear electromagnetic locks" on page 20) to the top

and bottom of the rear rack frame.

2. Install the rear strike plates ("Installing the rear strike plates" on page 22) to the top and bottom of the

rear rack frame.

3. Install the right and left rear door release springs ("Installing the rear door release springs" on page 23).

4. Install the rear magnetic lock cable ("Installing the rear magnetic lock cable" on page 24).

Removing the rear door lock rods

Installation is complete.

1. Insert a flat-head screwdriver between the lock rod mounting points at the handle and the plate that

secures it behind the plate.

Automatic Door Release Kit 19

2. Using a T-25 Torx screwdriver, remove the two M5.5 x 10 mm screws of the top lock plate, and then

remove the plate.

Installing the rear electromagnetic locks

You can install the rear electromagnetic locks using two options.

• With the full lock position, you attach the strike plates to the electromagnetic locks directly. This option

offers a very high resistance by securing and locking the rear rack doors.

Automatic Door Release Kit 20

• With the half lock position, you partially attach the strike plates to the electromagnetic locks. This option

offers less resistance by only securing, not locking, the rear rack doors.

To install the rear electromagnetic locks:

1. Align the electromagnetic lock on top of the electromagnetic lock bracket, routing the magnetic lock

cable through the notch on the electromagnetic lock bracket.

2. Using the Allen wrench, insert and tighten two black cap screws to attach the electromagnetic lock to the

electromagnetic lock bracket on the top of the rear rack frame.

3. Install the electromagnetic lock assembly.

o To install the electromagnetic lock in the full lock position, align the electromagnetic lock assembly

to the sixth round hole from the right on the top of the rear rack frame. To attach the electromagnetic
lock assembly to the top of the rear rack frame, use a T-25 Torx screwdriver to insert and tighten the
two M5.5 self-tapping screws into the inner row of rack holes.

o To install the electromagnetic lock in the half lock position, align the electromagnetic lock assembly

to either the fifth or seventh round hole from the right on the top of the rear rack frame. To attach the

Automatic Door Release Kit 21

electromagnetic lock assembly to the top of the rear rack frame, use a T-25 Torx screwdriver to insert
and tighten the two M5.5 self-tapping screws into the inner row of rack holes.

4. Repeat steps 1 through 3 for the bottom, rear electromagnetic lock.

Installing the rear strike plates

1. Align the strike plate bracket to the two studs on the top of the rear rack right door.

2. Using an M5 socket driver, insert and tighten the two M5 nuts over the studs to attach the top strike plate

bracket to the top of the rear rack right door.

3. Attach the strike plate assembly to the strike plate bracket (2).
a. Using a hammer, insert the two roll pins into the two holes on the strike plate (4).
b. Insert a flathead screw through the strike plate (1).
c. Slide a rubber washer onto the flathead screw in between the strike plate and strike plate bracket

(3).

NOTE: Do not tighten the strike plate too tightly to the strike plate bracket. The strike plate should

float on the rubber washer providing flexibility to align with the electromagnetic lock.

Automatic Door Release Kit 22

d.

Using the supplied Allen wrench, tighten the flathead screw.

4. Repeat steps 1 through 3 for the bottom, rear strike plate.

Installing the rear door release springs

1. Align the door release spring with the studs on the rear right door.

Automatic Door Release Kit 23

2.

Using an M5 socket driver, insert and tighten the two M5 lock nuts over the studs.

3. Close the rear right door and confirm that there is contact with the door release spring.

4. Repeat steps 1 through 3 for the rear left door.

Installing the rear magnetic lock cable

1. Plug one end of the magnetic lock cable into the cable connector hanging from the right of the upper

electromagnetic lock assembly.

Automatic Door Release Kit 24

2.

Plug the other end of the magnetic lock cable into the cable connector hanging from the right of the
lower electromagnetic lock assembly.

3. Using the cable tie wraps, route the magnetic lock cable up the side of the rack to the panel connector

on the AC transfer switch.

4. Plug the center connector of the magnetic lock cable into the panel connector on the AC transfer switch.

5. Using the remaining cable tie wraps, secure any excess cable.

Automatic Door Release Kit 25

Hook Up Kit

Main hose assembly* (2)

About this kit

Before the delivery of your HP mc-Series 5042 Rack, you must install this kit to your facility water line at the
location of your MCS 5042 unit installation.

For location recommendations, see the HP mc-Series 5042 Rack Site Preparation Guide on the HP website

Kit contents

(http://www.hp.com/go/rackandpower).

Item Description (Quantity)

1
2
3
4
5
6
7
8
9
10

*Not drawn to scale. The actual length of the main hose is approximately 3.5 m (11.5 ft).

90° elbow assembly (2)
Viton gasket (2)
M6 screw (4)
5-mm Hex L-key (1)
Warning label (2)
M5.5 x 10 self-tapping screw (8)
Hose mounting brackets with hose clamp (2)
Top cover plate (1)
Rear cover plate (1)

Hook Up Kit 26

Required tools

• Two pipe wrenches

• 5-mm HEX L-key (included in your kit contents)

• (Optional) Hacksaw

• T-25 Torx screwdriver

• T-30 Torx screwdriver

• Phillips screwdriver

(Optional) Installing additional components to your
facility water line

You can install the HP mc-Series 5042 Hook Up Kit in several configurations. The kit itself is sufficient to
operate the MCS 5042 unit; however, in the following circumstances, you might want to install additional
components:

• Ball valves—To enable you to easily turn off the facility water to the MCS 5042 unit for any reason,

install ball valves between the connection of the water hoses and the facility water supply. If you do not
install ball valves, water will drain from the facility piping when you disconnect the hose.

• Filter and bypass—To help improve the quality of water entering the MCS 5042 unit, install a filter. To

aid in the operation and cooling of your equipment, install a bypass for the filter.

• Pressure reducing valve—If the pressure of the MCS 5042 unit exceeds its maximum operating pressure

(approximately 116 psi or 8 bar), install a pressure-reducing valve.

For more recommendations and installation examples, see the HP mc-Series 5042 Rack Site Preparation
Guide on the HP website (http://www.hp.com/go/rackandpower).

Orientation of the hose

The hoses have swivel nuts on both ends. Mechanically, you can connect either end to an MCS 5042 unit or
the facility water connection.

Hook Up Kit 27

For easy installation, connect the end with the clam shell to your facility.

Routing the hose through the MCS 5042

Determine how you will install the main hoses:

• Through an opening in the raised floor

For more information, see "Attaching the main hoses to the MCS 5042 through an opening in the raised
floor (on page 31)."

• Above the floor

Hook Up Kit 28

For more information, see "Attaching the main hoses to the MCS 5042 above the floor (on page 32)."

• Through the top of the MCS 5042

Hook Up Kit 29

For more information, see "Attaching the main hoses to the MCS 5042 through the top of the unit (on
page 33)."

Installing the 90° elbow assembly

1. Insert the Viton gasket into the swivel nut of the union at the 90° elbow assembly.

2. Hold the 90° elbow in the designated direction (towards the top for installation through the top of the

unit, or towards the bottom for rear or bottom installation), and hand-tighten the 90° elbow assembly to
the MCS 5042 unit.

Hook Up Kit 30

3.

Main water

Removes hot water from the MCS 5042

Use two wrenches to tighten the union an additional two flats. Be sure the direction of the elbow does
not change.

Attaching the main hoses to the MCS 5042 through
an opening in the raised floor

1. Route the main hose through the opening in the raised floor at the opening in the bottom of the MCS

5042.

2. Run the hoses up and connect them to the 90° elbow assembly.

3. Hand-tighten the hoses to the 90° elbow assembly.

Callout Component Function

A

Hook Up Kit 31

Callout Component Function

hose—Outlet

B

4. Use a pipe wrench to tighten the hose connections an additional two flats.

Main water hose—Inlet Brings cold water into the MCS 5042

Attaching the main hoses to the MCS 5042 above the
floor

1. Using a T-30 Torx screwdriver, remove the two screws securing the bottom rear panel to the unit. Save

the screws.

2. Re-use the screws to install the rear plate with the cutout facing the unit.

3. Route the main hose through the opening in the rear plate into the MCS 5042.

4. Run the flexible hoses up, and connect them to the 90° elbow assembly.

5. Hand-tighten the hoses to the 90° elbow assembly.

Hook Up Kit 32

6.

Using a pipe wrench, tighten the hose connections an additional two flats.

Attaching the main hoses to the MCS 5042 through
the top of the unit

1. Using a T-30 Torx screwdriver, remove the four screws securing the top panel to the unit. Save the

screws.

2. Re-use the screws to install the top plate with the cutout facing the unit.

3. Route the main hose through the opening in the top plate into the MCS 5042.

4. Run the hoses down, and connect them to the 90° elbow assembly.

5. Hand-tighten the hoses to the 90° elbow assembly.

6. Using the pipe wrench, tighten the hose connections an additional two flats.

Hook Up Kit 33

7.

Using a T-25 Torx screwdriver and the eight M5.5 x 10 self-tapping screws from this kit (four screws per
bracket), secure the two support brackets to the rear frame in approximately equal distances between
the hose connections in the MCS 5042 and the top plate.

8. Open the clamps and insert the hoses. Insert the screws that came with the clamps from the front of the

MCS 5042 to the back, and use a Phillips screwdriver to secure the hoses into the clamps.

(Optional) Shortening the hoses

1. Using the L-key (supplied with this kit), remove the four M6 screws on the clam shell clamp, turning each

screw one turn until they are all equally loose and can be removed. Retain screws to reinsert later.

Hook Up Kit 34

2.

Remove the clam shell clamp from around the hose and remove the swivel nut from the end of the hose.

3. Using a hacksaw, cut the end of the hose to the desired length.

4. Insert the swivel nut into the end of the hose and then replace the clam shell clamp around the hose.

NOTE: The shorter screws do not reach the threads of the clam shell until the clam shell is

tightened. Therefore, you must use the longer screws first to tighten and secure the clam shell, and

then you can replace the longer screws with the original shorter screws.

Hook Up Kit 35

5.

Insert the four longer M6 screws included in the kit to secure the clam shell clamp around the hose.

6. Using the L-key, tighten the longer M6 screws one turn at a time, tightening all four screws evenly. The

clamp must be tight enough for the four shorter M6 screws to reach.

7. One hole at a time, replace the longer M6 screws with the original shorter M6 screws.

8. When you have replaced all four longer M6 screws with the original shorter M6 screws, use the L-key

to fully tighten each screw.

Attaching the main hose to the facility water line

1. Attach the main hoses to the facility water lines, and then hand tighten the swivel nut.

Hook Up Kit 36

2.

Water will drain when disconnected from the facility piping.

Use the hose wrench, included in the kit contents, to tighten an additional two flats.

(Optional) Attaching the warning label to the hose

NOTE: The warning label reminds you:

If your hoses require additional insulation, attach the warning labels to the insulated hoses.

Hook Up Kit 37

Rack Expansion Kit

About this kit

The HP Expansion Rack Kit enables you to connect a secondary rack of the same height and depth to your

Kit contents

MCS 5042. When the expansion rack is installed, the MCS 5042 cools both racks.

This kit includes:

• HP MCS 5042 Expansion Rack (1)

• Automatic Door Release Kit (1)

• Rack Hardware Kit (1)

• HP MCS 5042 Baying Kit (1):

o 1130-mm gasket (2)
o 1870-mm gasket (3)
o 4040-mm gasket (1)
o Baying bracket (6)
o T-30 screw (12)
o Door sensor cable (1)
o Cable ties (8)

Required tools

The following tools are required for installation:

• T-30 Torx screwdriver

• Adjustable wrench

Rack Expansion Kit 38

Installing the expansion rack

1. Using a T-30 Torx screwdriver, remove the eight M6 screws securing the MCS 5042 one-piece side

panel, and then remove the panel from the MCS 5042.

2. Using a T-30 Torx screwdriver, remove the three side panel mounting brackets.

Rack Expansion Kit 39

3.

To remove the panel that covers the cutout on the rear extension kit of the MCS 5042, remove the eight
(seven shown in the following illustration) thumb screws.

4. Attach the gaskets, included in your kit contents, to the MCS 5042:
a. Remove the liner backing from each gasket.
b. Attach the two 1130-mm gaskets to the top and bottom frames on the side of the MCS 5042.
c. Attach the three 1870-mm gaskets to the front, middle, and rear of the side of the MCS 5042.

Rack Expansion Kit 40

d.

Attach the 4040-mm gasket around the cutout of the rear extension.

5. Position the expansion rack next to the MCS 5042 where it will be bayed, ensuring that the rack feet are

on solid flooring.

6. Use an adjustable wrench to adjust each leveling foot of the expansion rack, ensuring that the rack is

level with the MCS 5042.

Rack Expansion Kit 41

7.

Pull the pins on the four hinges of the left rear door on the expansion rack, and then remove the door.

8. Open the front and rear doors of the MCS 5042 to access the baying bracket holes.

9. Install the six baying brackets, included in your kit contents, between the MCS 5042 and the expansion

rack. You must install the brackets in the same holes where you removed the side panel brackets.
Use the following guidelines:

o The top baying brackets must be installed in the holes directly under the top hinge of the rack door.
o The middle baying brackets must be installed in the middle holes of the rack frame.
o The bottom baying brackets must be installed in the holes directly above the bottom hinge of the rack

door.

To install the brackets:

a. From the rear of the MCS 5042 and the expansion rack:

i. Loosely install the three baying brackets to the MCS 5042, inserting one T-30 screw in each

bracket.

ii. Align the expansion rack with the remaining bracket holes.
iii. Insert three T-30 screws into the remaining holes, through the baying brackets, and into the

expansion rack frame.

iv. Using a T-30 Torx screwdriver, tighten all six screws until the baying brackets are secure.

Rack Expansion Kit 42

b.

From the front of the rack, repeat the preceding step for installing the brackets in the rear of the rack.

10. Replace the rear door of the expansion rack:
a. Align the door to the four hinge locations on the rack frame.
b. Squeeze the two pins on each hinge, and then insert each hinge into the hinge bracket.

11. Install the side panel removed from the MCS 5042 to the open side of the expansion rack.

12. Install the front door sensor cable:

Rack Expansion Kit 43

a.

Remove the small connector from the front door sensor in the MCS 5042.

Rack Expansion Kit 44

b.

Using one of the door sensor cables included in the expansion rack, plug one side to the front door
sensor in the MCS 5042.

c. Route the cable through the MCS 5042 behind the management module to the expansion rack.

Rack Expansion Kit 45

d.

Plug the other end of the cable into the bottom of the second front door sensor in the expansion rack.

Rack Expansion Kit 46

e.

Use the cable ties in the kit to secure the cable and wind up any excessive cable.

13. Install the rear door sensor cable:
a. Remove the small connector from the top connection of the rear door sensor in the MCS 5042.

Rack Expansion Kit 47

b.

Using the other side of the door sensor cables included in the expansion rack, plug one side to the
front door sensor in the MCS 5042.

c. Route the cable through the rear of the MCS 5042 behind to the expansion rack.
d. Plug the other end of the cable into the bottom of the second front door sensor in the expansion rack.
e. Use the cable ties in the kit to secure the cable and wind up any excessive cable.
f. If necessary, press and hold the C key on the management module for five seconds, so it will detect

the additional door sensors of the expansion rack.

14. At the top right corner in the expansion rack is the cable that provides power to the door release kit of

the expansion rack. Plug it into the output connector in the MCS 5042.

Rack Expansion Kit 48

Installation is complete.

Rack Expansion Kit 49

Acronyms and abbreviations

MCS

modular cooling system

Acronyms and abbreviations 50

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