- play_arrow Fast Track: Initial Installation
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Initial Installation and Configuration
- play_arrow Maintaining, Installing and Replacing Components
- Maintaining MX240 Components
- Maintaining the MX240 Cooling System Component
- Maintaining MX240 Host Subsystem Components
- Maintaining MX240 Interface Modules
- Maintaining MX-SPC3 Services Card
- Maintaining MX240 Power System Components
- Maintaining MX240 SFP and XFP Transceivers
- Maintaining MX240 Switch Control Boards
- play_arrow Troubleshooting Hardware
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Fire Safety Requirements
- Warning Statement for Norway and Sweden
- Preventing Electrostatic Discharge Damage to an MX240 Router
- Installation Instructions Warning
- MX240 Chassis Lifting Guidelines
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Laser and LED Safety Guidelines and Warnings
- Radiation from Open Port Apertures Warning
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- MX240 DC Power Electrical Safety Guidelines
- DC Power Copper Conductors Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Midplane Energy Hazard Warning
- Multiple Power Supplies Disconnection Warning
- Action to Take After an Electrical Accident
- Site Electrical Wiring Guidelines for MX Series Routers
- Agency Approvals and Compliance Statements
MX240 Air Deflector Kits
Optional air deflector kits are available that let you install the MX240 routers in a ventilation environment with designated hot and cold aisles. These kits convert the MX240 router from side-to-side ventilation into front-to-back ventilation, by directing ventilation with cold air to enter from the front and warm exhaust to exit from the back. The air deflectors contain no additional fans, so they require no additional electrical power.
The air deflector kit must be installed along with the device. It cannot be installed if the device is already installed on the rack.
The air deflector kits consist of four main components: two intake/exhaust boxes and two side plenums.
- Top plenum
- Bottom plenum
- Right plenum
- Left plenum
The top and bottom plenums are identical to each other, as are the right and left or side plenums. See Figure 1 and Table 1 for the list of components that comprise the air deflector kit.
Number | Component |
|---|---|
1 | Two side plenums (one for right and one for left) |
2 and 4 | Top plenum and bottom plenum |
3 | Rear mounting brackets |
5 | Perforated screens |
6 | Mounting brackets supplied with the air deflector kit for the router |
Air flow in the air deflector kit is from front to rear, and the orientation of the top and bottom plenums is critical to ensure air intake happens from the front and exhausts through the rear.
The plenums are installed above and below the router to direct intake air from the air space in front of the router into the side plenum mounted on the intake side of the device. The intake air plenum directs air into the device, and the exhaust air plenum directs the exhaust air to the opposite side of the device. The exhaust plenum directs the exhausted air into the exhaust plenum above the unit, where it is expelled into the air space behind the router.
The air deflector kit requires additional space around the device. Table 2 and Table 3 summarize the physical specifications and rack space requirements for the air deflector kit. See Figure 2 for more information.
Description | Dimensions and Weights | |
|---|---|---|
Top and Bottom Plenums | Side Plenums | |
Width | 26.16 in. (66.44 cm) | 15.64 in. (39.72 cm) |
Length | 17.62 in. (44.75 cm) | 19.9 in. (50.54 cm) |
Height | 3.5 in. (8.89 cm) | 5.55 in. (14.09cm) |
Weight | 16.5 lb (7.45 kg) | 10.6 lb (4.8 kg) |
Description | Dimensions |
|---|---|
Rack height | 9 RU (40 cm) This includes 2 RU (8.89 cm) of the top plenum, 5 RU (22.22 cm) of the router, and 2 RU (8.89 cm) of the bottom plenum. During this installation, we recommend that you allocate an optimum rack height of 18.15RU (80.68 cm) for ease of installation. |
Distance between the rear rack mounting surface and front rack mounting surface | 27.5 in. (69.85 cm) to 29.5 in. (75.43 cm) |
Minimum internal space required to install the side plenums (centered horizontally within the rack) | 29 in. (73.66 cm) |
Maximum depth of space behind the front and rear mounting surfaces | 3 in. (7.62 cm) |
As per EIA Standards, the rack mounting surfaces must conform to 19 in. or 48.26 cm.
Figure 3 shows the MX240 router installed in typical four-post mounting racks with the air deflector kit parts in place.
