ADC 150-2257-01, User Manual

Page: 20 / 52

Installation 150-712-200-02
12 July 26, 2000 HRE-712 List 1 and List 2
Rack Mounting the HRE-712 List 2
This procedure describes how to mount the enclosure to the two rack-mounting rails that are customarily used in
manholes.
Have the following equipment ready before you begin this procedure:
• Four
5
/
8
-inch (1.6 cm) thru bolts, 1
1
/
2
-inches long for rack mounting.
• Four
5
/
8
-inch (1.6 cm) nonmetallic washers. Nonmetallic washers are required to avoid a ground loop that may
result if both the rack and the enclosure are grounded. Do not use the rack ground for the enclosure ground
since its integrity is not 100 percent reliable.
• One wrench
To rack mount the enclosure, follow these steps:
1 Position the baseplate on the two mounting rails.
2 Attach the baseplate to the mounting rails with the four
5
/
8
-inch (1.6 cm) mounting bolts.
3 Slide the thru-bolts with nonmetallic washers through the outside slots and holes of the mounting bracket
shown in
Figure 5 . Begin tightening the bolts into the mounting holes.
4 Dress out the stub and attach it to the main feeder cables as described in “Splicing Procedure” on page 29 .
5 Activate the desiccant bag shipped with the HRE-712 prior to closing the lid by removing the bags from their
plastic containers and placing them inside the enclosure.
Figure 5. Base Plate Mounting Bracket
6 Ground the enclosure as described in “Grounding the HRE-712 List 1 and List 2” on page 13 .
7 Install doublers or repeaters as described in “Installing Doubler and Repeater Units” on page 15 .
8 Close the enclosure cover as described in “Detaching the Enclosure from the Baseplate” on page 15 .
10.5"
10.5"