Black Box RM140A-R2 User manual

BL A C K B OX®
Low-profile, 11U high cabinets hold networking
equipment, servers, and phone equipment.
Fit under most desktops in the home and office.
Cabinets are shipped fully assembled.
Small Office/Home Office (SOHO) Cabinets
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]
Customer
Support
Information
RM140A-R2
RM140A-M-R2
RM145A-R2
RM145A-M-R2

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Trademarks Used in this Manual
Trademarks Used in this Manual
Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.
PLEXIGLAS is a registered trademark of Roehm GmbH & Co.
UL is a registered trademark of Underwriters Laboratories.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.
We‘re here to help! If you have any questions about your application
or our products, contact Black Box Tech Support at 724-746-5500
or go to blackbox.com and click on “Talk to Black Box.”
You’ll be live with one of our technical experts in less than 30 seconds.

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Table of Contents
Preface .................................................................................................................................................................4
Safety Symbols Used in This Manual ............................................................................................................................................4
Safety Considerations .................................................................................................................................................................4
1. Specifications .................................................................................................................................................................5
2. Overview .................................................................................................................................................................8
2.1 Introduction........................................................................................................................................................... 8
2.2 Features .................................................................................................................................................................8
2.3 What’s Included .....................................................................................................................................................8
2.4 Optional Accessories...............................................................................................................................................8
2.4.1 Fans ..........................................................................................................................................................8
2.4.2 Bottom Plates ...........................................................................................................................................9
2.4.3 Shelves......................................................................................................................................................9
3. Installation ...............................................................................................................................................................10
3.1 Receiving, Unpacking, and Removing the SOHO Cabinet from the Pallet ............................................................10
3.2 Loading Equipment ..............................................................................................................................................10
3.3 Power ...............................................................................................................................................................10
3.4 Protective Grounding............................................................................................................................................11
3.4.1 Connecting the Main Protective Grounding Stud to the Dedicated Branch Circuit Ground
Connector............................................................................................................................................... 11
3.4.2 Connecting the Main Protective Grounding Stud to the Protective Bonding Conductors....................... 11
3.4.3 Parts Not Bonded to Protective Earthing Terminal .................................................................................. 11
3.4.4 Shelves Bonding......................................................................................................................................11
4. Operation ...............................................................................................................................................................13
4.1 Leveling the Cabinet.............................................................................................................................................13
4.2 Removing the Doors.............................................................................................................................................13
5. Service ...............................................................................................................................................................14

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Preface
Preface
This manual is provided to prevent service personnel from committing an act that results in the risk of fire, electric shock, or injury
to persons. Only trained service personnel should receive, unpack, and assemble the Small Office/Home Office (SOHO) Cabinet.
In addition, only trained service personnel should install equipment in enclosures.
Safety Symbols Used in this Manual
This manual provides general safety guidelines to be observed during installation, operation, and maintenance of the SOHO
Cabinet.
WARNING: Failure to follow directions in the warning could result in injury to persons or loss of life.
CAUTION: Failure to follow directions in the caution could result in damage to equipment or storage data.
Safety Considerations
WARNING: Improper handling and use of the SOHO Cabinet could result in equipment damage, serious injury, or possible death.
Only trained service personnel should be used to remove the enclosure from the pallet. Also, be sure you have a sufficient number
of service personnel. Do not attempt to move enclosures by yourself.
Only UL®Listed ITE units should be installed inside the SOHO cabinet.
Be sure to read and follow all individual manufacturer equipment manuals for safety and installation instructions.
The SOHO Cabinet was not evaluated as a fire enclosure.
Proper spacing is required when installing electrical equipment to avoid electrical shock. Maintain minimum spacing between
the accessories and components and the computer enclosure assembly for safe operation of the equipment when installed
in accordance with the National Electric Code ANSI/NFPA 70-1999.
The ambient temperature operating range for the SOHO enclosure and accessories is +50 to +95° F (+10 to +35° C).
The non-operating temperature is -4 to +140° F (-20 to +60° C).

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Chapter 1: Specifications
1. Specifications
Size: RM140A-R2, RM140A-M-R2: 24.8"H (25.9"H w/casters) x 24"W x 24"D (62.9 [65.8 cm w/casters] x 61 x 61 cm);
RM145A-R2, RM145A-M-R2: 24.8"H (25.9"H w/casters) x 24" x 36"D (62.9 [65.8 cm w/casters] x 61 x 91 cm)
Base Opening: RM140A-R2, RM140A-M-R2: 13"W x 18"D (33 x 45.7 cm);
RM145A-R2, RM145A-M-R2: 13"W x 30"D (33 x 76.2 cm)
Cable Opening: 7"W x 1"H (17.8 x 2.5 cm)
Certifications: UL®Listed (UL60950-1)
Construction: Body: 16-gauge steel;
Doors: 16-gauge steel and PLEXIGLAS®(RM140A-R2, RM145A-R2) or mesh (RM140A-M-R2, RM145A-M-R2)
Rails: 12-gauge steel
Door Width: 21" (53.3 cm)
Door Height: 19.1" (48.5 cm)
Exterior Depth: RM140A-R2, RM140A-M-R2: 24" (61 cm);
RM145A-R2, RM145A-M-R2: 36" (91.4 cm)
Exterior Depth with Hinges: RM140A-R2, RM140A-M-R2: 25.5" (64.8 cm);
RM145A-R2, RM145A-M-R2: 37.5" (95.3 cm)
Exterior Height: 24.8" (63 cm)
Exterior Height with Casters: 25.8" (65.5 cm)
Finish: Black powder coat
Grounding: Studs located on the doors and side panels
Interior Depth (Door to Door): RM140A-R2, RM140A-M-R2: 22.4" (56.9 cm);
RM145A-R2, RM145A-M-R2: 34.5" (87.6 cm)
Interior Height (Base to Top): 22" (55.9 cm)
Interior Width (Side Wall to Side Wall): 23.8" (60.5 cm)
PLEXIGLAS Thickness: RM140A-R2, RM145A-R2: 0.2" (0.51 cm)
Distance to Front and Rear Door at Maximum Rail Depth: 0.25" (0.64 cm)
Rack Units: 11U
Rail Type: Square (M6)
Maximum Rail Depth with Fan Installed: RM140A-R2, RM140A-M-R2: 20" (50.8 cm);
RM145A-R2, RM145A-M-R2: 32" (81.3 cm)
Minimum/Maximum Rail Depth: RM140A-R2, RM140A-M-R2: 2.8"–21.8" (7.1–55.4 cm);
RM145A-R2, RM145A-M-R2: 6.8"–33.8" (17.3–85.9 cm)
Weight Capacity: 500 lb. (227.3 kg)
Weight: RM140A-R2, RM140A-M-R2: 88 lb. (40 kg);
RM145A-R2, RM145A-M-R2: 101 lb. (45.9 kg)
Shipping Weight: RM140A-R2, RM140A-M-R2: 122 lb. (55.4 kg);
RM145A-R2, RM145A-M-R2: 136 lb. (61.8 kg)

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Chapter 1: Specifications
Small Office/Home Office (SOHO) Cabinets arrive fully assembled and fit neatly on the floor under a desk. Their dimensions are
shown in Figures 1-1 through 1-3.
23.990" (60.93 cm)
Figure 1-1. Top view of cabinet.
25.385" (64.448 cm)
24.750" (62.865 cm)
Figure 1-2. Front view of cabinet.

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Chapter 1: Specifications
RM140A-R2, RM140A-M-R2: 23.990" (61 cm)
RM145A-R2, RM145A-M-R2: 35.990" (91.4 cm)
Figure 1-3. Side view of cabinet.
To adjust the rails, use an 7⁄16-mm socket as shown in Figure 1-4.
Figure 1-4. Adjusting the rails.

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Chapter 2: Overview
2. Overview
2.1 Introduction
Small Office/Home Office (SOHO) Cabinets are designed to hold networking equipment, servers, and phone equipment. The
low-profile cabinets fit under most desks in the home and office.
These cabinets feature 11U of mounting space, factory-installed casters, leveling legs, locking front and rear doors, mounting
locations for two 4" (10.2-cm) fans on the rear door, and cable access in the lower rear panel beneath the door.
2.2 Features
• Welded steel frame
• Square hole (M6), 11U mounting rails
• Reversible, locking front and rear doors
• Clear PLEXIGLAS front door or mesh front door
• Rear door provides mounting locations for two 4" (10.2-cm) fans (see Table 2-1)
• Cable access below the rear door
• Solid top and sides
• Open base
• Fits under most desktops
• Leveling legs and casters included
• Ships fully assembled
2.3 What’s Included
Your package should include the following items. If anything is missing or damaged, contact Black Box Technical Support
at 724-746-5500 or [e-mail].
• Fully assembled Small Office/Home Office (SOHO) Cabinet
• (4) non-locking, swiveling casters (installed)
• (4) leveling legs (installed)
• (30) M6 cage nuts
• (30) M6 screws
• (2) pairs of keys
• This user’s manual
2.4 Optional Accessories
2.4.1 Fans
Table 2-1. Fan specifications.
Product Code Number of Fans CFM dB
RM141 2 200 44
RM386 2 150 33
RM386-220V 2 150 33

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Chapter 2: Overview
2.4.2 Bottom Plates
Table 2-2. Bottom plate descriptions and specifications.
Product Code Description
RM140ABGK Mounts in the bottom of the RM140A-R2 and RM140A-M-R2 to close the bottom while stilll
allowing cable access. Includes (1) base plate with cable grommet and (4) 3⁄8" x 10-32
self-tapping panhead screws.
Specifications: Construction: 16-gauge steel
Finish: Black powder coat
Size: Unit: 18.5"H x 14.1"W x 0.5"D (47 x 35.8 x 1.3 cm)
Shipping: 39.5"H x 18"W x 1"D (100.3 x 45.7 x 2.5 cm)
Weight: Shipping: 5.8 lb. (2.6 kg)
RM145ABGK Mounts in the bottom of the RM145A-R2 and RM145A-M-R2 to close the bottom while stilll
allowing cable access. Includes (1) base plate with two cable management grommet brushes
and (4) 3⁄8" x 10-32 self-tapping panhead screws.
Specifications: Construction: 16-gauge steel
Finish: Black powder coat
Size: Unit: 30.5"H x 14.9"W x 0.5"D (77.5 x 37.8 x 1.3 cm)
Shipping: 39.5"H x 18"W x 1"D (100.3 x 45.7 x 2.5 cm)
Weight: Shipping: 8.5 lb. (3.8 kg)
2.4.3 Shelves
Table 2-3. Shelves that work with RM140A-R2, RM140A-M-R2, RM145A-R2, and RM145A-M-R2.
Product Code Description
RM399 22.25" (56.52 cm) deep fixed, vented shelf with 200-lb. (91-kg) weight capacity
Table 2-4. Shelves that work with RM145A-R2 and RM145A-M-R2 only.
Product Code Description
RM047 23.6"–35.4" (60–90 cm) deep tool-less, vented, telescoping shelf, 150-lb. (68-kg) weight capacity
RM403 27.25" (69.22 cm) deep fixed, vented shelf, 150-lb. (68-kg) weight capacity
RM410 30" (76.2 cm) deep fixed, vented shelf, 150-lb. (68-kg) weight capacity
RMS1924S 24" (61 cm) deep sliding, vented shelf, 50-lb. (22.7-kg) weight capacity
RMT411 29" (73.7 cm) deep slding, vented shelf, 125-lb. (56.8-kg) weight capacity
NOTE: All Black Box two-point mounting shelves will also fit RM140A-R2, RM140A-M-R2, RM145A-R2, and RM145A-M-R2.

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Chapter 3: Installation
3. Installation
3.1 Receiving, Unpacking, and Removing the SOHO Cabinet from the Pallet
Inspect for damage and report any before receiving. For what‘s included in the package, refer to Section 2.3.
Unpack the enclosure by carefully removing the corrugated carton and corners. Avoid damaging the enclosure when removing
packaging.
WARNING: Only trained service personnel should be used to remove the enclosure from the pallet. Also, be sure you have a
sufficient number of service personnel. Do not attempt to move enclosures by yourself.
WARNING: Be careful when moving enclosures before installation. Sudden stops and starts, excessive force, obstructed routes,
and uneven floor surfaces may cause the enclosure to topple over.
3.2 Loading Equipment
WARNING: Only install equipment after the SOHO cabinet has been properly secured. Do not move the SOHO cabinet while
loaded.
Once in place at the desired/intended location, deploy the leveling feet for maximum stability.
Rated or maximum load capacity for the SOHO Cabinet is 500 pounds.
To maintain a uniform distribution of the mechanical load in the SOHO Cabinet, load the heaviest modules, equipment first, at
the bottom of the SOHO Cabinet and load the lighter units at the top.
3.3 Power
When using power distribution units (PDUs), each PDU should be connected to a committed branch circuit that is rated for the
continuous load of all the equipment connected.
When not using a PDU, each piece of equipment should be connected to a dedicated branch circuit.

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Chapter 3: Installation
3.4 Protective Grounding
Protective grounding studs are provided along with grounding jumper wires that electrically bond the enclosure doors to the
enclosure chassis.
WARNING: To avoid injury to persons or loss of life, ground each enclosure individually to the dedicated branch circuit ground.
3.4.1 Connecting Main Protective Grounding Stud to the Dedicated Branch Circuit Ground
Connect the dedicated branch circuit ground connector to the main protective grounding stud located inside at the bottom rear
of the enclosure chassis uisng a listed ring or closed-loop terminal.
3.4.2 Connecting Main Protective Grounding Stud to the Protective Bonding Conductors
Connect the rear doors to the main protective grounding studs inside at the bottom and top rear of the enclosure chassis using
a listed ring or closed-loop terminal. Connect the front door to the grounding stud inside at the bottom front of the enclosure
chassis using a listed ring or closed-loop terminal.
3.4.3 Parts Not Bonded to Protective Earthing Terminal
The following parts are not effectively bonded to the protective earthing terminal: rails, front to back rail horizontals. If these parts
need to be bonded to the protective earthing terminal, do so in accordance with Article 250 of the National Electric Code.
3.4.4 Shelves Bonding
Accessory shelves should be reliably secured and bonded to the SOHO Cabinet rails by thread cutting screws, star washers, and
nuts.

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Chapter 3: Installation
Brush grommet on
each end of plate
seals out air and dust
Figure 3-1. Brush grommets on plate.

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Chapter 4: Operation
4. Operation
4.1 Leveling the Cabinet
SOHO cabinets are shipped with both casters and leveling glides for your convenience. You can lower the leveling legs by turning
the leveling glide to the proper height using a 3⁄4" open-ended wrench.
4.2 Removing the Doors
The front and rear locking doors are removable. To remove a door, open the door beyond 90 degrees. Then grasp the door with
both hands and carefully lift upward. When the door is free of the hinge pins, pull the door away from the enclosure. To attach
the door, align all the hinges and slowly slide the door down until seated.

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Chapter 5: Service
5. Service
The SOHO Cabinet should be repaired by personnel trained by Black Box, or returned to Black Box for repair or replacement.
Contact Black Box Technical Support at 724-746-5500 or [e-mail].

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NOTES

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About Black Box
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RM140A-R2, rev. 4
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