Middle Atlantic Products SR Series User manual

SR SERIES
PIVOTING RACK
Instruction Sheet
Thank you for purchasing the SR Series Pivoting Rack. Please read these instructions thoroughly
before installing or assembling this product.
• Lever Lock™ compatible in center section and back pan for small device mounting and cable
management.
• Forward Compatible for 5x faster tool free system integration.
• Available in 23.5” and 29” widths.
• 29” Widths include front vertical cable management for clean and organized look.
• Tool-Free Quick-Mount system for easy mounting of the center section to the
backpan.
• Pivots 90 off the wall for access to rear connections.
• Zero Clearance Latch (Optional) allows side-by-side mounting or interior
corner mounting.
THANK YOU
PRODUCT FEATURES
100-00031 Rev A

Page 2
IMPORTANT SAFETY INSTRUCTIONS
WARNING: Failure to read, understand and follow the following information can result in serious personal injury, damage to the
equipment or voiding of the warranty.
CAUTION: Ensure that the wall has a structural load capacity that will support the weight of the cabinet fully loaded with
equipment.
CAUTION: All installation and assembly steps must be performed by qualified personnel.
CAUTION : To avoid an unstable condition, place heavier components at the bottom of the enclosure. When more than one component
is placed in the enclosure, begin at the bottom of the enclosure and place equipment at the lowest available point, evenly distribute
weight (horizontally) within the enclosure.
Component weight should be distributed as follows:
• 1/2 of the total component weight (at a minimum) placed in the bottom third of the cabinet.
• 1/4 of the total component weight (at a maximum) placed in the middle third of the cabinet.
• 1/4 of the total component weight (at a maximum) placed in the top third of the cabinet.
SEISMIC COMPLIANCE: An engineered system is vital to achieve seismic rating requirements. A licensed professional engineer must
approve the type of fasteners used for where the rack will be mounted. Braced according to specifications set forth by licensed
architects and engineers, the Middle Atlantic Products rack/enclosure you purchased is capable of sustaining a phenomenal lateral
load. Refer to the seismic data published on seismic letter on the Middle Atlantic Product website.
DANGER HAZARDOUS VOLTAGE: The lightning flash with the arrowhead symbol, within an equilateral triangle is intended to alert the user to the
presence of uninsulated dangerous voltage within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to
persons.
WARNING: A warning alerts you to a situation that could result in serious personal injury or death.
CAUTION: A caution alerts you to a situation that may result in minor personal injury or damage to the product and/or property.
NOTE: A note is used to highlight procedures pertaining to the installation, operation, or maintenance of the product.
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Clean only with dry cloth.
• Only use attachments/accessories specified by the manufacturer.
CAUTION : The following parts are not effectively bonded to the protective earth terminal: rack rails, lace bars, Lever Lock™, shelves,
baffle, blanking panels, and cable management. If any part needs to be bonded to the protective earth terminal it shall be done in
accordance with Article 250 of the National Electrical Code.
CAUTION: Power cord, for fans or other accessories, need to be secured to ensure that they are routed away from pinch points
and moving parts.
CAUTION: Do not attempt to unload or move the enclosures alone. Make sure to have sufficient amount of personnel and equip-
ment to safely move this product.
CAUTION : Watch hands and fingers around pinch points.
CAUTION : Individual components mounted inside of the wall mount rack must have their own fire enclosure.
CAUTION : To reduce the risk of personal injury and conform to the UL listing, the system must be grounded and bonded in accor-
dance with Article 250 of the National Electrical Code.
DANGER TENSION DANGEREUSE: Le symbole de la pointe de flèche, dans un triangle équilatéral, est destiné à alerter l'utilisateur sur la
présence de tension dangereuse non isolée dans l'enceinte du produit qui peut être d'une ampleur suffisante pour constituer un risque d'électrocu-
tion.
AVERTISSEMENT: Un avertissement vous avertit d'une situation pouvant entraîner des blessures graves ou la mort.
ATTENTION: Une attention vous avertit d'une situation pouvant entraîner des blessures mineures ou des dommages au produit et/ou à la
INSTRUCTIONS IMPORTANTES SUR LA SÉCURITÉ
• Lire ces instructions.
• Conservez ces instructions.
• Respectez tous les avertissements.
• Suivez toutes les instructions.
• Nettoyer uniquement avec un chiffon sec.
• N'utilisez que des accessoires spécifiés par le fabricant.

Page 3
CONFORMITÉ SISMIQUE: Un système d'ingénierie est essentiel pour répondre aux exigences d'évaluation sismique. Un ingénieur
professionnel agréé doit approuver le type de fixations utilisées pour le montage du rack. Contreventé conformément aux spécifica-
tions établies par des architectes et ingénieurs agréés, le rack/boîtier Middle Atlantic Products que vous avez acheté est capable de
supporter une charge latérale phénoménale. Reportez-vous aux données sismiques publiées sur la lettre sismique sur le site Web du
produit Middle Atlantic.
AVERTISSEMENT: Ne pas lire, comprendre et suivre les informations suivantes peut entraîner des blessures graves, des
dommages à l'équipement ou de la nullité de la garantie.
ATTENTION: Veiller à ce que le mur a une capacité de charge structurelle qui supporter le poids de le cabinet entièrement
chargé avec l'équipement.
ATTENTION: Toutes installation et de montage étapes doivent être effectuées par du personnel qualifié.
ATTENTION : Pour éviter un état instable, placez composants les plus lourds au fond de l'enceinte. Lorsque plus d'un composant est
placé dans la enceinte, commencer par le bas de l'enceinte et placer l'équipement à la point le plus bas disponible, de distribuer
uniformément le poids (horizontalement) dans le enceinte.
Le poids des composants devrait être réparti comme suit:
• 1/2 du poids total de la composante (au minimum) placé dans le tiers inférieur de l'armoire.
• 1/4 du poids total de la composante (au maximum) placé dans le tiers médian de l'armoire.
• 1/4 du poids total de la composante (au maximum) placé dans le tiers supérieur de l'armoire.
REMARQUE: Une remarque est utilisée pour mettre en évidence les procédures relatives à l'installation, au fonctionnement ou à l'entretien du
produit.
INSTRUCTIONS IMPORTANTES SUR LA SÉCURITÉ (A CONTINUÉ)
ATTENTION : Les pièces suivantes ne sont pas correctement liées à la borne de terre de protection: rails de rack, barres à lacets,
Lever Lock™, étagères, déflecteur, panneaux obturateurs et gestion des câbles. Si une partie doit être reliée à la borne de terre de
protection, cela doit être fait conformément à l'article 250 du Code national de l'électricité.
ATTENTION: Le cordon d'alimentation, pour les fans ou autres accessoires, doivent être fixé à veiller à ce que ils sont
acheminés loin des points de pincement et des pièces mobiles.
ATTENTION: Ne essayez pas de décharger ou déplacer les enceintes seul. Assurez-vous d'avoir quantité suffisante de personnel
et de matériel pour déplacer ce produit en toute sécurité.
ATTENTION : Observez les mains et les doigts autour des points de pincement.
ATTENTION : Les composants individuels montés à l'intérieur de montage mural doivent avoir leur propre armoire à incendie.
WEIGHT RATINGS
Model Weight Rating
All 500 lbs. Maximum Total Rated Load
WARNING: This product is intended for use only with the products and maximum weights indicated. Use with other products or
products heavier than the maximum weights indicated may result in instability causing possible injury. Total equipment weight must
not exceed 500 lbs. (226.8 kg).
ATTENTION: Pour réduire le risque de blessure et se conformer à la liste UL, le système doit être mis à la terre et collé
conformément à l'article 250 du Code national de l'électricité.
AVERTISSEMENT: Cette produit est conçu pour être utilisé uniquement avec les produits et les poids maximum indiqué. unique-
ment avec les produits et les poids maximaux indiqués. En cas d'utilisation avec d'autres produits ou des produits plus lourds que
le poids maximal indiqué, le chariot peut devenir instable et causer des blessures. Le poids total de l'équipement ne doit pas
dépasser 226.8 kg (500 lbs).

Page 4
• Power Driver
• ½” Socket
• ⅜” Socket
• 5/16” Deep Socket
• 3/16” Drill Bit
• Slip Joint Pliers
• Level
• 3’ Step Ladder (Optional)
• #2 Phillips Screwdriver
• 9/16” Socket
• 7/16” Socket
REQUIRED TOOLS
WARNING: Use tools with caution and follow all necessary safety
protocols.
AVERTISSEMENT: Utiliser des outils avec prudence et suivre
tous les protocoles de sécurité nécessaires.
INTRODUCTION
NOTE:
• Images of enclosures shown in this instruction sheet may include the zero clearance latch
(model number: DWRSR-ZL) and sub plate (model number: SR-SUB) options, which may or may not
be a part of your configuration.
• Not all options available for the enclosure are included in these instructions and separate instruction
sheets are available for the individual options.
• Topics in this guide indicate that the zero clearance latch and sub plate options must be installed
prior to the enclosure assembly.
For more information, refer to the Zero Clearance Latch (I-00142) and Sub Plate (I-00003) instruction
sheets at www.middleatlantic.com.
SUPPLIED COMPONENTS AND HARDWARE
Backpan
A
Trim
E
(2x)
Key
D
Center Section
B
Support Base
C
Width: 23.5” (597mm) and 29” (736.6mm)
Height: 24, 40, and 46 RU
Depth: 22” (558.8mm), 28” (711.2mm), and 32” (812.8mm)
NOTE: Not all depths available in all heights.
SPEICIFICATIONS
NOTE:
• To order more hardware, contact support at [email protected] or [phone].
• Additional hardware is included that may not be required for your installation.
If any pieces are missing or damaged, please report it immediately to Technical Support at
[email protected] or [phone].

Page 5
FIGURE A
This rack is factory configured for a right-hand pivot and may be
reversed using the following procedure:
1. If upper wire chamber is already installed, use power driver and
5/16” socket to remove (4x) screws and take it off the
backpan (A). (FIGURE A)
NOTE: Verify your power driver torque is on
the lightest setting and only increase as necessary.
2. Remove (4x) screws from the backpan foot to take
it off the backpan.
3. Carefully rotate the backpan 180º.
4. Replace the upper wire chamber using previously removed
hardware.
5. Replace the backpan foot using previously removed hardware.
NOTE: Holes are provided on both sides of center section (B) so
bushing can be moved if rack is loaded and backpan is mounted with pivot
on wrong side. Top and bottom may need to be removed to access bushings.
Upper Wire
Chamber
A
Backpan
Foot
REVERSING THE PIVOT DIRECTION
NOTE: Screws secure wire chamber
and foot on both sides of rack.
A
C
B
NOTE:
• Install the Zero Clearance Latch option before mounting the backpan (A) to the wall and loading
equipment into the rack.
• For installation instructions, refer to the DWRSR-ZL Zero Clearance Latch instruction sheet (I-00142).
• The DWRSR-ZL must be installed for seismic compliance.
.57” (14.47mm) minimum distance
required between SR and wall or other
SR using Zero Clearance Latch.
.57” (14.47mm)
minimum distance
74.53" (1893.06mm), SR-XX-22
86.53" (2197.86mm), SR-XX-28
94.53" (2401.06mm), SR-XX-32
ZERO CLEARANCE LATCH OPTION (DWRSR-ZL)
A
B
FIGURE B

Page 6
FIGURE C
The zero clearance latch
option saves valuable wall
space by allowing wall racks
to be placed side-by-side, in
a corner, or wherever side
clearance is an issue. This
easy to install option upgrades
new SR Series enclosures to
allow the center section (B) to
lock closed without the need
for side latches.
Open by pulling the convenient
front-mounted handle as shown.
(FIGURE C)
Unlike time-consuming threaded rods, the unique latch provides keylocked security from the front and
is keyed differently than the front door option.
NOTE:
• Mount up to (4x) SR-SUB plates to each backpan (depending on model) using mounting
holes and included hardware. (FIGURE F)
• Center section (B) of enclosure removed for clarity.
FIGURE F
A
NOTE: Install the Sub Plate Mounting option (model number: SR-SUB, sold separately) before
mounting the backpan (A) to the wall and loading equipment into the rack.
• Insert self-clinching stud through
mounting holes in backpan (A),
through SR-SUB, and then tighten
flange nuts on self-clinching studs.
(FIGURE D)
NOTE: Hardware included with option.
• Each SR-SUB
allows for the
mounting of up
to (4x) 89-D type
brackets, (4x) 1900
boxes or (1x) Raco
3 gang box.
(FIGURE E)
NOTE: Hardware
included with option.
INSTALLING THE SUB PLATE MOUNTING OPTION (SR-SUB)
Self-Clinching
Stud
89-D Bracket
(Not Included)
ZERO CLEARANCE LATCH OPTION (DWRSR-ZL, CONTINUED)
B
A
SR-SUB
SR-SUB
Flange Nut
FIGURE D FIGURE E

Page 7
MOUNTING THE BACKPAN TO STUDS
FIGURE H
FIGURE G
PRIOR TO MOUNTING BACKPAN TO WALL
NOTE:
• Ensure the backpan (A) is screwed to the
studs. (FIGURE H)
• Use 5/16" diameter lag bolts with a
minimum length of 2" and standard flat
washers for hardware (not provided).
• The standard flat washers must be installed
under the lag bolt heads.
1. Align backpan (A) to selected wall location
and mark pilot holes through wall
mounting points as shown. (FIGURE G)
2. User power driver and 3/16” bit to drill pilot holes on stud
center markings. (FIGURE H)
3. Use ½” socket, 5/16" lag bolts and washers (not provided) in
6 places: (4x) on pivot side and (2x) on latch side.
(FIGURE G)
NOTE: Verify your power driver torque is on the lightest setting and only increase as necessary.
NOTE:
• When installing next to another SR or wall using the zero clearance latch option, perform the support
base (C) installation for access to the base screws before mounting the backpan (A). For more
information, see “Installing the Base” on page 9.
• On 46 space SR enclosures, you may install either a dust cover or upper wire chamber option on top
of the rack. For more information, refer to the Dust Cover and Upper Wire Chamber Options instruction
sheet (I-00155) at www.middleatlantic.com.
CAUTION: The backpan must be installed plumb and level for proper operation.
ATTENTION: La plaque profilée doit etre aplomb et de niveau pour un fonctionnement.
½” Drywall
Stud Lag bolt must
protrude 2”
into the stud.
Drill 3/16"
pilot hole on
stud center.
Wall
Mounting
Points
(Pivot Side)
Wall
Mounting
Points
(Latch Side)
for 16”
Studs
A
A

1. Align backpan (A) to selected wall location and mark pilot holes through wall mounting points as
shown. (FIGURE J)
2. Drill at least 1” into concrete block for your selected hardware (not provided). (FIGURE K)
3. Use toggle bolts and washers (or other appropriate hardware, not provided) in 6 places: (4x) on pivot
side and (2x) on latch side. (FIGURE J)
NOTE: Verify your power driver torque is on the lightest setting and only increase as necessary.
Page 8
MOUNTING THE BACKPAN TO CONCRETE BLOCK (INSTALL NOT EVALUATED BY UL)
CAUTION: The backpan must be installed plumb and level for proper operation.
ATTENTION: La plaque profilée doit etre aplomb et de niveau pour un fonctionnement.
FIGURE J
Wall
Mounting
Points
(Pivot Side)
Wall
Mounting
Points
(Latch Side)
A
FIGURE K
1” Deep
Hole in
Block
A

1. Use power driver and #2 Phillips bit to
remove (4x) screws and take the top
access panel off the upper wire chamber.
(FIGURE M)
NOTE: If using power driver, verify the torque
is on the lightest setting and only increase as
necessary.
2. FOR 46 SPACE SR ENCLOSURES ONLY:
Remove dust cover option, if installed, before proceeding.
For more information, refer to the Dust Cover and Upper
Wire Chamber Options instruction sheet (I-00155) at
www.middleatlanatic.com.
Base mounts to
outside of foot.
Pivoting support base
compensates for
variations in floor. Panel removes
for wire access.
Access
Panel
Upper
Wire
Chamber
Access
Panel
3. Use 5/16” socket to remove (2x) screws
and bottom access panel on the pivot side
of the base (C) only. (FIGURE N)
Page 9
INSTALLING THE BASE
PREPARING TO MOUNT CENTER SECTION
FIGURE L
FIGURE N
FIGURE M
1. Use power driver and 3/8” socket to remove (2x) 3/8” screws pre-installed on the bottom foot of the
backpan (A). (FIGURE L)
NOTE: If using power driver, verify the torque is on
the lightest setting and only increase as necessary.
2. Position the support base
(C) to the outside of the
backpan foot (A).
3. Use hardware from
previous step to attach
the base to the
backpan foot.
A
A
C
C

Page 10
Security Clip
Pivot Pin
NOTE: The pivot pins and security clips needed to mount the center section (B) to the backpan (A) are
pre-installed in the bushings on the backpan top and bottom. (FIGURE P)
1. Remove the clips and unscrew the pins.
NOTE: Use slip joint pliers to carefully
remove the pins, if necessary.
2. Remove wire-tied trim inside of center section and set aside for installation.
3. Place center section (B) up on support base (C) with pivot bushing hanging over side of support base
approximately 3” to 6". (FIGURE R)
4. Push center section (B) back. (FIGURE S)
5. Once pivot has passed lower and upper wear strips located on backpan (A), slide center section (B)
over to engage the pivot bushing. (FIGURE T)
MOUNTING THE CENTER SECTION TO THE BACKPAN
FIGURE P
FIGURE T
B
A
C
A
B
C
B
A
FIGURE S
A
B
Pivot
Bushings
Wear Strip
FIGURE R
C
NOTE: Top view of enclosure.
NOTE: Top view of enclosure.

Page 11
6. Keeping the center section (B) in the closed position,
insert a pivot pin through the bottom access hole into
bushing, hand tighten fully, and then back out one
turn. (FIGURE U)
7. Open center section (B) slightly for top pin alignment.
8. Going through the upper wire chamber, drop the
pivot pin into the top bushing (use tip of pin to find
alignment) and insert, hand tighten fully, and then back
out one turn.
NOTE: Center section
(B) removed for clarity.
9. Re-install the security clips to prevent
unintentional pivot pin removal. (FIGURE V)
Engagement
Area
Handle
NOTE:
• Slide security clip into engagement area. Do not push pin in all the way. (FIGURE V)
• The center section (B) may be secured to the backpan (A) using the latch.
• The keys (D) may be used for additional security when securing your enclosure in the closed position.
10. Re-install access panels by reversing the steps in “Preparing to Mount Center Section” on page 9.
11. FOR 46 SPACE SR ENCLOSURES ONLY: Install dust cover or upper wire chamber option.
For more information, refer to the Dust Cover and Upper Wire Chamber Options instruction sheet
(I-00155) at www.middleatlantic.com.
FIGURE U
FIGURE V
MOUNTING THE CENTER SECTION TO THE BACKPAN (CONTINUED)
Bottom
Access
Hole
Upper
Wire
Chamber
INSTALLING THE TRIM TO THE BACK, PIVOT SIDE OF THE CENTER SECTION
E B
1. Pivot center section (B) into fully open position.
2. Use power driver, 5/16” socket, and the screws pre-installed on
the back of the center section (B) to install trim (E) on the pivot
side of the center section as shown. (FIGURE W)
NOTE:
• If using power driver, verify the torque is on the lightest setting
and only increase as necessary.
• Thread cutting screws are provided on both sides of the center
section for convenience. Leave unused thread cutting screws in
place on opposite side. FIGURE W
Pre-Installed
Thread Cutting
Screw

Page 12
Compatible Middle Atlantic Products power strips can be mounted inside the trim (E) with the included
hardware. This simplifies cable management by requiring no additional accessories.
NOTE: Reference which power strip models are compatible with your specific size enclosure at
www.middleatlantic.com.
INSTALLING POWER STRIPS
1. Use power driver, #2 Phillips bit, and a flat head screw
(provided with clips, not thread forming) to secure
each power mounting clip to the trim (E) in your
enclosure. (FIGURE X)
NOTE:
• Reference the compatible power strip models for your
specific size enclosure at www.middleatlantic.com
to determine whether yours requires the use of 1 or 2
power mounting clips.
• Verify your power driver torque is on the lightest setting
and only increase as necessary.
2. Use a rubber mallet and gently tap your power strip
into the power mounting clip(s), if needed.
TIP: To remove your power strip from the mounting clip(s),
carefully wedge a #2 flat head screwdriver between the
side of your power strip and mounting clip, and gently pry
the strip from the clip(s) as shown. (FIGURE Y)
FIGURE X
Power
Mounting
Clip
E
NOTE: Top view of power strip,
clip, and enclosure trim shown.
FIGURE Y
Power
Strip
Flat Head
Screwdriver Tip
Power
Mounting
Clip
B
Flat Head
Screw
(Provided with
Clips, Not Thread
Forming)

GROUNDING AND BONDING
Page 13
1. Use 7/16” and 3/8” wrenches, and ¼”-20 and 10-32 nuts to attach the backpan bonding wire from
the ¼”-20 backpan protective earth terminal (PET) to nearest 10-32 center section (B) bonding stud.
(FIGURE Z)
NOTE: The main protective earth ground needs to be the first terminal
placed on the PET and this terminal needs to be secured on its own with
a nut. The bonding wire for the center section (B) can be added to the PET
after securing the nut for the main ground.
2. Use 7/16” and 3/8” wrenches, and ¼”-20 and 10-32 nuts to attach a door
bonding wire from a 10-32 upper wire chamber bonding stud to the nearest
10-32 center section (B) stud.
3. Use 7/16” and 3/8” wrenches,
and ¼”-20 and 10-32 nuts to attach
a door bonding wire from a 10-32
support base (C) bonding stud to
the nearest 10-32 center section (B)
stud.
Protective Earth Terminals (PET) are located in backpan of the wall rack. These terminals are marked with the symbol
Wall rack parts, center section and door, contain or are provided with bonding points for connection to the backpan / PET.
Protective earth and bonding connections shall be in accordance with Article 250 of the National Electric Code.
¼-20
Flange
Nut
¼-20
Flange
Nut
12 Gauge Backpan Bonding Wire
14” (355.6mm) Length
(#10 to ¼” ring terminals)
10-32
Locking
Nut
PROTECTIVE EARTH TERMINAL KIT (MODEL NO. PET-K-D/EWR, OPTIONAL)
PROTECTIVE EARTH TERMINAL KIT (MODEL NO. PET-K-SR, OPTIONAL)
(2x) 10-32
Locking
Nut
(2x) 12 Gauge Door Bonding Wire
9” (228.6mm) Length
(#10 to ¼” ring terminals)
B
Backpan PET Studs
(2x Upper, 2x Lower)
C
A
NOTE: View of
bottom from inside of
enclosure.
FIGURE Z
Upper
Wire
Chamber
(2x) 10-32 Upper
Wire Chamber
Bonding Studs
(2x) 10-32 Base
Bonding Studs
Center Section 10-32 Bonding Studs
(4x Upper, 4x Lower) Backpan PET Studs
(2x Upper, 2x Lower)

Page 14
WARRANTY
For warranty information, refer to legrandav.com/policies/warranty_information.
Corporate Headquarters
P: [phone] | F: [phone] | legrandav.com | [email protected]
Middle Atlantic Canada
P: [phone] | F: [phone] | ca.middleatlantic.com | [email protected]
Middle Atlantic EMEA Technical Support
P: [phone] | [email protected]
Factory Distribution
United States: New Jersey, California, and Illinois | Canada: Ontario | The Netherlands: Weert
At Legrand AV Inc. we are always listening. Your comments are welcome.
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