2.1 Site Selection
The following criteria should be considered when selecting a site to install the switch:
Install the switch in an area that provides adequate clearance for removing front and rear components. Figure 2-1
displays switch clearance requirements.
Figure 2-1: Switch Component Removal Footprint
• Temperature and Ventilation: For proper ventilation, install the switch where there is ample airflow to the front and back of the switch. The 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).
Pour empêcher l'interrupteur de surchauffe, ne pas utiliser il dans une zone où la température ambiante est supérieure à 40°C (104°F).
• Airflow Orientation: Determine airflow direction of the fan modules and power supply modules. Fan and power supply module handles indicate airflow direction:
• Blue Handle: Air Inlet module.
• Red Handle: Air Exit module.
displays power supply module locations on the front panel. Appendix E
displays fan module locations on the rear panel (DCS-7316 switches may also contain rear panel power supply modules). Verify the airflow direction of all modules satisfy these criteria:
• All rear panel modules have the same color handles.
• All front panel modules have the same color handles.
• Rear panel modules must have different color handles than front panel modules.
Orient the switch to assure that the air intake modules face the cool aisle. If the airflow direction is not compatible with the installation site, contact your sales representative to obtain modules that circulate air in the opposite direction.
• Rack Space:
Install the switch in a 19" rack or cabinet. The switch height depends on the switch model, as specified in Table 1-1
. Verify that the linecard and supervisor removal clearance ( Figure 2-1
) provide adequate space for the power and data cables that connect to the switch.
When mounting the switch in a partially filled rack, load the rack from bottom to top, with the heaviest equipment at the bottom. Load the switch at the bottom if it is the only item in the rack.
The accessory kit provides mounting brackets for four-post racks. Contact your sales representative to obtain two-post mounting racks.
• Power Requirements:
Power requirements vary by switch. Refer to Table 1-1
for information regarding your specific system.
Multiple circuits provide redundancy protection. The switch uses power cables that have an IEC-320 C19 plug. The accessory kit provides IEC-320 C19 to C20 power cables.
Important! All power input plug-socket combinations must be accessible at all times; they provide the primary method of disconnecting power from the system.
Toutes les combinaisons de fiche-prise d’entrée de puissance doivent être accessibles en tout temps; ils fournissent le principal moyen de coupure d’alimentation du système.
• 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.
• AC power cords can reach from the AC power outlet to the connectors on the front panel.
Important! Disconnecting power to all input sockets is required to completely power off the unit.
Coupure d’alimentation sur toutes les entrées il faut pouvoir complètement l’appareil hors tension.
2.2 Tools Required for Installation
Each switch provides an accessory kit that contains parts for installing the switch into a four-post rack. Two-post rack mount parts are available through your sales representative. Accessory kits do not include screws, nuts, or bolts for attaching the switch to a conventional rack.
In addition to the accessory kit, the following tools are required to install a modular switch:
Mechanical device capable of lifting chassis being installed (chassis weight listed in Table 1-1
Two-Post Conventional Rack
• Screws or rack mounting nuts and bolts.
Four-Post Tool-less Rack
No additional equipment required.
Four-Post Conventional Rack
• Screws or rack mounting nuts and bolts.
2.3 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 surfaces (such as an antistatic mat) to dissipate static charge.
• Wear an ESD 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.