HP MCS 5042 User manual

HP mc-Series 5042 Rack Options
Installation Guide
Abstract
This document is for the person who installs racks and rack products. This procedure is performed only by trained personnel.
HP assumes you are
qualified in performing installations and trained in recognizing hazards in rack products.
Part Number: 669031-003
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 3
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 4

About this guide 5
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
(http://www.hp.com/go/rackandpower).
Safety information
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
caused by contaminated water.
IMPORTANT: Before you begin the installation process, review the HP mc-Series 5042 Site
Preparation Guide.
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.
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 6
•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.

MCS 5042 options 7
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)
Included with the
MCS 5042
Enables the rack doors to open automatically to maintain
air flow and cooling to the servers in the event of an
emergency.
Hook Up Kit (on page 26) BW971A Required for connection between facility water and the
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.

Automatic Door Release Kit 8
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
doors and allow air flow and cooling from the room to reach the servers in the rack.
Kit contents
•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 Electromagnetic lock bracket (1)
2 Door release spring (1)
3 Mounting hardware (1)
•
M5 x 10-mm pan head screw (4)
•
M5.5 x 13-mm self-tapping screw (4)

Automatic Door Release Kit 9
Callout Description (Quantity)
4 Electromagnetic lock assembly (1)
5 Spacer block (1)
6 Strike plate bracket (2)
7 2-inch x 1-inch plastic adhesive-backed
strip (1)
8 Washer (4)
9 Electromagnetic lock cable (1)
Not shown Adhesive cable management clip (6)
Rear door kit contents

Automatic Door Release Kit 10
Callout Description (Quantity)
1 Electromagnetic lock bracket (2)
2 Electromagnetic lock cable (1)
3 Mounting hardware (1)
•
M5 lock nut (8)
•
M5 x 12-mm flat-head screw (4)
4 Electromagnetic lock assembly (2)
5 Door release spring (2)
6 Strike plate bracket (2)
7 Washer (8)
Not shown Cable tie wrap (12)
Electromagnetic lock assembly contents
Callout Description (Quantity)
1 Magnet (1)
2 Strike plate (1)
3 Rubber washer (1)
4 Roll pin (2)
5 Flathead screw (1)
6 Black cap screw (2)
7 Allen wrench (1)
Required tools
The following tools are required for installation:
•T-25 Torx screwdriver
•T-30 Torx screwdriver
•Flathead screwdriver

Automatic Door Release Kit 11
•M5 socket screwdriver
•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:
HP recommends keeping your latch handle locked and using the fixed door handles
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 40th and 42nd holes. Align the
electromagnetic lock bracket with these holes (1).

Automatic Door Release Kit 12
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 13
5. 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:
The MCS 5042 comes with two different strike plate brackets for the front. One bracket
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
labeled.
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
offers a very high resistance by securing and locking the front rack door.
•With the half lock position, you partially attach the strike plate to the electromagnetic lock. This option
offers less resistance by only securing, not locking, the front rack door.

Automatic Door Release Kit 14
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 15
oTo 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.
oTo 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 16
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 17
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 18
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 19
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).
Installation is complete.
Removing the rear door lock rods
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 20
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.