Cabletron Systems SEHI-22FL - Manual (Page 26)

Installing the SEHI
SEHI User’s Guide 4-3
4.3.1 Tabletop or Shelf Installation
This section provides guidelines for installation on a tabletop or shelf.
Tabletop and shelf installations must be within reach of the network
cabling and meet the requirements listed below:
• A single phase grounded power receptacle that meets the power supply
requirements listed in Chapter 3 under Power Supply Requirements
must be located within seven feet of the location.
• In a shelf installation, the shelf must be able to support 30 pounds of
static weight for each device in the stack.
• Maintain a temperature of between 5
°
C (41
°
F) and 40
°
C (104
°
F) at
the site with fluctuations of less than 10
°
C (18
°
F) per hour.
For a tabletop or shelf installation, locate the SEHI within seven feet of its
power source and with an unrestricted free surface area as shown in
Figure 4-2.
Figure 4-2 Tabletop or Shelf Installation
If the installation requires that the SEHI is to be stacked, proceed to
Section 4.3.3. Otherwise, continue by connecting power as described in
Section 4.4.
!
C AUT IO N
In order to allow for proper cooling, there must be a two-inch
clearance on either side and the back of the unit.
21 IN.
6 IN.
18 IN.
0165203
7 FT
HubSTACK 10BASE-FL HUB WITH LANVIEW® SECURE
SEHI-22FL
E
1 RCV
LNK
12 11 10 9 8 7 6 5 4 3 2 1
PWR
CPU
CLN
RX TX RX TX RX TX RX TX RX TX RX TX
RX TX RX TX RX TX RX TX RX TX RX TX
1 2 3 4 5 6
7 8 9 10 11 12
EPIM 1 RESET COM
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM