Equipment Issue 1
First Printing, May 2009
Section CMPH-75CC-801
−
CMPH
t
CROSS-CONNECT SERIES INSTALLATION GUIDE
−
E
Copyright 2009 Charles Industries, Inc. All rights reserved. Printed in the United States of America.
Charles
r
is a registered trademark of and CMPH
t
is a trademark of Charles Industries, Ltd. Availability of features and technical specifications herein subject to change without notice.
Page 1 of 3
Figure 1. Typical CMPH Enclosure, Dome On and Dome Off Views
Flap Latch
secured via cup-washer
screw (see Steps 5 and 6)
Ground
Line Indicator
Label
or
Decal
Areas
Dome On
Dome
Removed
Cross
Connect
Panel
(one on
both
sides)
- Installation Instructions -
CMPH-75XX Cross-Connect Series of
Charles Multi-Purpose Housing (CMPH
t
) Enclosures
1.
GENERAL
1.1
Document Purpose
This document provides installation instructions for the CMPH-75XX
Cross-Connect Series of Charles Multi-Purpose Housing (CMPH
t
) enclo-
sures, which provide a quick and easy way to cross-connect up to 1200 feed
and distribution wire pairs using high-density terminal blocks in a
single,
above-ground enclosure. See Figure 1 for a typical CMPH-75XX Cross-
Connect series model, see Table 6 for ordering information on all products in
this series, and call Charles Industries (see Part 3) to request more information.
- NOTE -
Hereafter the Charles Multi-Purpose Housing will be referred to as the
CMPH" or enclosure."
1.2
Document Status
Whenever this document is updated, the reason will be stated in this para-
graph.
1.3
Product Purpose and Description
The CMPH-75XX Cross Connect Series is designed to provide quick, flex-
ible, high-density, cross connections between feeder and distribution cables.
The enclosure’s internal framework and large swing-out panels hold up to 24,
50-pair, cross-connect terminal blocks. These pre-stubbed terminal blocks,
which contain factory-wired 25-pair or 50-pair wire-bundles that are termi-
nated with 710 or MS
@
connectors, can be installed initially, or easily added
at a later date without disruption of existing circuits. The swing-out panels
facilitate cable storage in the base prior to cable splicing and installer connec-
tions. This center-fed, cross-connect, interface system accommodates from
300 to 1200 pairs.
1.4 Exterior components.
The CMPH enclosure offers easy installation, su-
perior structural strength, 360
_
technician access, and generous internal
connection capacity. The green light-weight base and dome are made of a dura-
ble material which minimizes condensation and protects against corrosion,
floods, fire, weather, dirt, insects, intrusion, dents and impact. The top piece
of the CMPH is the dome, designed to overlap the base for a flood-protective
bell-jar effect. The base has an open top, corrugated ribbed walls, internal,
dual-purpose, molded-in, channel grooves (which accept most metallic stakes
as well as the vertical channels of the internal framework, see Figure 2), and
an open bottom. Easy replacement installations and easy underground cable
access is provided via this open base bottom.
1.5 Interior components.
At the center of the cross-connect CMPH is an in-
ternal metallic framework that supports two, large, hinged, heavy-duty,
wind-latchable, side panels, both of which are factory-equipped with either
25-pair or 50-pair terminal blocks (see Table 6 for the specific type of terminal
block used). Up to 24 50-pair terminal blocks can be equipped in a single high-
density CMPH. Factory-prewired at the back of each terminal block is a
5-foot-long wire-bundle stub that is terminated with either a 710 connector or
an MS
@
splice connector (per the specific model ordered). New or existing
pre-
connectorized
feed and distribution cables (wire gauge size of 22-26 AWG),
which also are terminated with either 710 or MS
@
connectors, enter the bottom
of the CMPH from a trench or vault and are mated with the connectors at the
end of the terminal blocks’ wire-bundle stubs. After the cable connections are
made inside the CMPH base (lower connections), the installer performs all
wire jumper connections (upper connections). Wire race-ways are provided
for protection of all cable and jumper pairs as they are installed. The hinged,
side-access style, terminal block panels enable the installer to create very
short, easily traceable, jumper runs. The installer routes and connects jumpers
between the proper toggle of the correct terminal block in one door panel (feed-
er side) and the proper toggle of the correct terminal block in the other door
panel (distribution side).
For models equipped with MS
@
splice connectors, the MS
@
connector has a
two part block which contains U-contacts, wire channels, and cut-off blades.
The body of the MS
@
splice cover module assembly and base are crimped to-
gether to terminate Feeder or Distribution pairs. Binder groups may be
identified on the module mouth and pairs can be identified on tagging cable
labels.
Also included with each CMPH is a test kit, a jumper wire spool holder, pair
identification labels, wire race-ways, splice bars, a ground bar, and other ac-
cessories (see Table 6).
1.6
Product Mounting Type and Location
The CMPH is an above-grade enclosure, the base of which is typically
installed in a trench or hole in the ground up to the base’s ground line indica-
tor, either in new or rehab-type installations around existing cables. The base
also can be mounted directly to a concrete pad using a special bracket, as well
as stake mounted. Molded channel grooves, located at the center of each inte-
rior side wall, enable stake mounting using 30”, 36” or 42” stakes. These
grooves accept most new and existing enclosures’ mounting stakes. The
ribbed or corrugated base walls provide excellent stability in most soil types.
The dome mounts on the base and protects all equipment installed or mounted
inside the CMPH.
1.7
Features
D
Side-access terminal blocks on swing-out panels facilitate cable storage
before splicing and provide greater room for spliced connections
D
Weather-resistant, gel-filled, Tyco Dat@ Term terminal blocks provide
application flexibility, rapid, pair-at-a-time, toolless, no-strip wire con-
nections
D
50-pair terminal blocks equipped with 5’ stubs which are terminated
with 3M MS
@
splice terminals
D
Plastic base provides ease of cabinet installation over existing cables
and facilitates cabinet rehabilitation
D
Single cabinet mounting footprint for 300-1200 wire pairs
D
Durable, light-weight, plastic, impact-resistant material provides long
life
D
Base with overlapping dome provides flood proof “bell jar” effect, to
minimize condensation and provide outstanding weather protection
D
Designed to meet Telcordia specification GR-3115-CORE
2. INSTALLATION
See Table 1 to perform a new CMPH enclosure installation. Table 2 describes
a new CMPH installation with stakes, and Table 3 describes an installation to
replace an existing enclosure (rehabilitation installation). Table 4 describes
how to make installer connections to the terminal blocks on the hinged interior
panels.
- CABLE DAMAGE WARNINGS -
Be careful not to damage any buried cables or service wires while digging either
to expose cables or to prepare a hole or trench, or while driving stakes.
- NOTE -
Never grasp or use the flap-latches as handles to lift the dome off the base; latch
breakage and possible enclosure intrusion could result.
Ground
Plate
Figure 2. Typical CMPH Enclosure, Dome Removed, Panels Open
Dome
Cup-washer screw
(attached to base via
lanyard, see Step 7)
Hasp
(see Step 23)
Base
collar
Base
Inside
frame-
work
Locking Pins
Feeder Side Hinged panel
Distribution Side
Hinged panel
Up to 12, 50-pair,
terminal blocks
can be installed
on each door
- GROUNDING WARNINGS -
Always follow local codes and company practices for performing proper cable
and site bonding and grounding, and perform all bonding and grounding prior
to other electrical and communications connections.
Table 1. Installing a New CMPH Enclosure
Step
#
Instruction
1.
h
Obtain tools, materials and equipment.
Gather the following
equipment to perform the CMPH installation.
h
216 tool or can wrench
h
Trenching and digging equipment and tools
h
Charles CMPH model
h
Cable grounding materials and tools
h
Scissors
,
knife or snips
h
Cable opening and management equipment
h
Level
h
Clean, dry, pea gravel
(3/8"-5/8" diameter)
h
Measuring tape
h
Conduit and conduit caps
(optional)
h
Soil tamping tool(s)
h
Wrenches or socket set
h
Soil for backfill
h
Insulated work gloves
(optional, to handle metallic
stakes)
h
Site cleanup tools
2.
h
Prepare trench.
Do not damage any buried cables or wires while
digging.
Dig and prepare the cable trench, per company practice.
3.
h
Place cables (or conduit or innerduct) in trench.
Follow company
practice to lay, place, and cut any cables and innerduct or conduit.
4.
h
Unpack and inspect equipment.
Without damaging the CMPH
exterior, remove the CMPH from its packaging. Inspect the unit upon
delivery; if damaged in transit, report the damage to the shipping
company.
5.
h
Unlock the CMPH.
Unlock
the CMPH using a 216 tool or
can wrench at the two cup-
washer screws (one at each
side of the CMPH); turn the
cup-washer screws counter-
clockwise until they freely
hang from their lanyard.
When locked, the cup-washer
screws prevent movement
of the flap-latches.
Flap Latch
Cup-washer
screw
216 Tool
Lanyard
6.
h
Disengage the flap-latches.
Each limited-flexibility
flap-latch contains a hole in it which accepts the
round standoff protruding from the side of the base
collar. Each latch must be pulled out or away from
base side wall just enough to clear the length
of the protruding standoff. Maintain the
flexed or pulled-out latch position by
temporarily inserting the cup-washer
screw or an item of similar diameter or
thickness under each latch (between
the latch and the side wall). Do not
pry or flex the latches too far, only
enough to clear the standoff.
Never
grasp or use the flap-latches as
handles to lift the dome off the base; latch
breakage and possible enclosure intrusion
could result.
Standoff
Cup-washer screw
Latch
Pull latch out. Insert
cup-washer screw
under latch.
7.
h
Remove the dome.
While the flap-latches
are properly disen-
gaged from the base
standoffs, grasp the
ribs at each side of
the dome and lift up
to remove the dome
from the base
.
The
cup-washer screws
remain attached to the
base via the lanyard (or
chain). Set aside the
dome for later use.
Standoff on Base
Cup-washer screw affixed via lanyard
Pull up on
ribs
