The following criteria should be considered when selecting a site to install the switch:
• Temperature and Ventilation: For proper ventilation, install the switch where there is ample airflow to the front and back of the switch. The ambient temperature should not go below 0° or exceed 40° C.
Important! To prevent the switch from overheating, do not operate it in an area where the ambient temperature exceeds 40°C (104°F).
• Airflow Orientation: Determine front and rear aisle temperatures and verify that fan is inserted appropriately for switch installation.
The fan orientation determines the airflow direction through the switch. The fan orientation is changed by removing the fan from the switch, rotating it 180°, then re-inserting it into the switch. The color of the visible label indicates the airflow direction. Figure 2-1
displays the rear panels of two switches with different fan orientations:
• Blue Label visible: Air Inlet direction.
• Red Label visible: Air Exit direction.
Orient the fan direction to assure the air inlet always faces the cool aisle:
• Air Exit label visible: orient front panel toward cool aisle.
• Air Inlet label visible: orient front panel toward hot aisle.
describes the process of changing the fan orientation.
• Rack Space: Install the switch in a 19" rack (cabinet) or place it on a flat surface. The switch height is 1 RU. The accessory kit provides brackets for rack mounting and rubber pads for a flat surface placement.
Two circuits provide redundancy protection. Chapter 4
describes power cable requirements.
Important! The power input plug-socket combination must be accessible at all times; it provides the primary method of disconnecting power from the system.
Figure 2-1: Rear Panels with Contrasting Fan Module Orientation
• Other Requirements: Select a site where liquids or objects cannot fall onto the equipment and foreign objects are not drawn into the ventilation holes. Verify these guidelines are met:
• Clearance areas to the front and rear panels allow for unrestricted cabling.
• All front and rear panel indicators can be easily read.
• Power cords can reach from the power outlet to the connector on the rear panel.
Important! All power connections must be removed to de-energize the unit.
Tools Required for Installation
Each switch provides an accessory kit that contains parts that are required to install the switch. In addition to the accessory kit, the following tools and equipment are required to install the switch:
Rack Mount (Two-Post or Four-Post)
• Screws or rack mounting nuts and bolts.
• #2 Phillips Screwdriver
Flat Surface Placement
No additional equipment required.
Accessory kit does not include screws for attaching the switch to the equipment rack. When installing the switch into an equipment rack with unthreaded post holes, nuts are also required to secure the switch to the rack posts.
Electrostatic Discharge (ESD) Precautions
Observe these guidelines to avoid ESD damage when installing or servicing the switch.
• Assemble or disassemble equipment only in a static-free work area.
• Use a conductive work surface (such as an antistatic mat) to dissipate static charge.
• Wear a conductive wrist strap to dissipate static charge accumulation.
• Minimize handling of assemblies and components.
• Keep replacement parts in their original static-free packaging.
• Remove all plastic, foam, vinyl, paper, and other static-generating materials from the work area.
• Use tools that do not create ESD.