Cabletron Systems Spectrum 2E42-27, Руководство пользователя

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Installing the 2E4X-27
2E42-27/2E42-27R/2E43-27/2E43-27R User’s Guide 3-3
3.3 INSTALLING THE 2E4X-27
The 2E4X-27 may be installed on a tabletop, shelf, or in a 19-inch rack.
Section 3.3.1 describes a tabletop or shelf installation and Section 3.3.2
describes the rackmount installation.
3.3.1 Tabletop or Shelf Installation
The following two subsections provide guidelines for installation on a
tabletop or shelf.
Guidelines for Tabletop and Shelf Installations
Tabletop and shelf installations must be within reach of the network
cabling and meet the requirements listed below:
• Locate the 2E4X-27 within seven feet of an appropriately grounded
power receptacle that meets the power supply requirements listed in
Appendix A .
• In a shelf installation, the shelf must support 13.6 kg (30 lb) of static
weight for each 2E4X-27.
• Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at
the installation site with fluctuations of less than 10°C (18°F) per hour.
• Maintain a 2-inch clearance from the left, right, and rear sides of the
device to provide adequate ventilation.
Installation
For a tabletop or shelf installation, locate the 2E4X-27 within seven feet
of its power source and with an unrestricted free surface area as shown in
Figure 3-1 . Proceed to Section 3.3.3 for 2E42-27/ 2E43-27 power
connection instructions and to Section 3.3.4 for 2E42-27R/2E43-27R
power connection instructions.
To prevent possible personal injury and/or damage to the unit,
do NOT connect power to the 2E4X-27 until instructed to do so.
!
CAUTION
To ensure proper ventilation and prevent overheating, leave a
minimum clearance space of 5.1 cm (2.0 in) at the left, right,
and rear of the 2E4X-27.