030-300377 Rev. A
Section CMPH-75CC-801
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CMPH
t
CROSS-CONNECT SERIES INSTALLATION GUIDE
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2
0905I1P1
8.
h
Find and remove red plastic bag
.
Remove the red bag labelled
“
moisture barrier
”
hanging on one of the frame’s splice bars or
brackets
.
Set it aside for later use.
9.
h
Optional - Replacement or rehabilitation mountings only.
For
applications to replace old enclosures, continue with the steps in
10.
h
Determine and mark base installation location.
To determine
exactly where to place the base in the trench, use the base itself as a
positioning template by placing it up over the top of the conduit,
innerduct, or cables
(route the cables through the base)
and lowering
the base to the ground. Analyze the site and position the base at its
proposed final orientation and horizontal positioning in the trench or
hole and adjust accordingly. Mark this proposed final spot by remov-
ing a shallow layer of top soil from around the outside perimeter of
the base about 2-4 inches wider than the base. Remove the base
and set it aside.
11.
h
Dig a hole for the base.
Caution: Avoid damaging buried cables,
wires, inner- duct, conduit or ground equipment whenever
digging.
At and within the marked perimeter boundary
,
dig
straight
down to a depth of 9 inches. Do not dig too deep.
12.
h
Optional - Stake mountings only.
For stake mounting applications,
continue with the steps in Table 2.
13.
h
Put base in hole or trench and route cable(s) through base.
Route the cables and conduit or innerduct up through the bottom of
the base,
then put the base in the prepared hole or trench.
14.
h
Verify proper base depth.
Before backfilling, verify the base is at the
proper depth, approximately 9 inches deep. Rest the base on solid or
well-tamped soil when measuring this distance. Verify the base
ground line indicator is at the same level as the final-grade ground
line. Remove, add, or tamp more soil as necessary.
15.
h
Level the base.
Verify the level (or plumb) of the base. Check the
level at either the top surface of the base, or against one of the inter-
ior vertical channels of the metal frame. Check the level in both
dimensions; front to back, and side to side. Make any needed
base-bottom soil adjustments to get a good or true level or plumb
line.
16.
h
Prepare earth ground.
Always follow local codes and company
practice when preparing earth ground and when grounding cables or
equipment.
If an earth ground is not present at the CMPH site and
local code or practice requires an earth ground, prepare one now.
Attach the earth ground to the CMPH’s ground lug on the ground
plate (Step 3) using a ground wire of proper gauge, per company
practice.
17.
h
Backfill soil inside
the base and tamp.
First plug, cap, or
cover all channel,
conduit, or innerduct
openings. Then per
company practice,
backfill soil
inside
the
base, tamping soil
periodically, to the
ground line mark.
This adds stability
and prevents any
company-approved
gravel (Step 19) from
falling or slipping
under the base sides
when it is added.
3-5 inches of
gravel inside
the base
(Step 19)
Base
Top
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Soil
Pea Gravel
Soil
Backfill and tamp outside the base.
With the base in place, backfill
the trench or hole outside of the base. While backfilling, tamp the soil
or fill and check the base level once or twice. Continue to add and
tamp the soil until the soil is at the base ground-line mark.
8"
9"
Side View
Moisture
Barrier
(see
Step 18)
Base
Bottom
Ground
Line
18.
h
Place the red-plastic bag or sheet.
Retrieve the provided, red-plas-
tic, vapor-barrier bag previously set aside, cut it open on all but one
long edge to make one large plastic sheet, verify it does not have any
large holes in it (if it does, seal them with duct tape), and place it into
the base on top of the soil fill. Completely cover the soil. Fit the bag
around and encircle the cables, conduit, or innerduct, spread it
outward from the center, and press all sheet edges downward where
they make contact with the base walls
.
Alternately
,
cut a hole or
“X”
in
the center of the sheet, drop the sheet down over the centered
cables or conduit group, bring it all the way down to the tamped soil
or fill, fit the sheet’s inner hole edges snugly around the cables or
conduit, and spread it out as underlined above. When installed
properly, this sheet acts as a vapor barrier and aids moisture run-off
into the soil.
Failure to use the plastic moisture-barrier bag on
top of the soil significantly increases the risk of condensation
inside the enclosure.
19.
h
Add gravel inside the base.
Pour 3-5 vertical inches of
company-approved gravel (gravel minimizes condensation and drains
well) into the base (about to the top base rib
,
or 1
”
below any
innerduct or conduit opening) on top of the soil. Use 5/8
” (or less)
diameter pea gravel, or clean, dry, non-porous, gravel rock only (cut
stone retains more moisture). Five 18-pound bags work well. Spread
out and level the gravel.
20.
h
End of base installation - determine next procedure.
If cable and
wire connections will now be performed, follow the steps in Table 4
and also follow local practices and equipment manufacturer
instructions for the proper procedures. If further cable work will NOT
be performed at this time, close the CMPH enclosure as described in
the following steps.
21.
h
Install dome.
Locate the
dome and lift it up and over the
interior framework and
equipment. Lower the dome
until it overlaps and
self-latches to the base. Verify
the standoffs protrude through
the holes in the latches
(self-latch feature).
Dome slot
self-aligns
with standoff
on base
Latch
shown
detached
for visual
clarity only.
Base
collar
22.
h
Lock the CMPH.
Lock the
CMPH by re-inserting and
turning the cup-washer
screws clockwise into the
threaded holes provided for
them in the standoffs.
Tighten the cup-washer
screws with a 216 tool or
can wrench.
Flap Latch
Cup-washer
screw
216 Tool
Lanyard
23.
h
(Optional) Padlock
the CMPH.
For
models equipped
with an optional
hasp, the CMPH
also can be locked
by inserting a
padlock through the
holes in the hasp
provided at the front
of the enclosure.
Hasp for padlock
(orderable option)
24.
h
End of CMPH placement. Clean up site.
If no more equipment or
cable work will be performed at this time, clean up the site, fill and
tamp any trenches, replace any removed sod, restore the landscape
to it’s original condition, pick up all equipment, and optionally leave
this document inside the CMPH for future reference.
Table 2. Installing the CMPH with New Charles Stakes
Step #
Instructions
Charles offers some CMPH models which include two mounting stakes (either 30", 36", or 42"
long). All stakes have identical hole patterns. This table describes how to install these models.
1.
h
Prepare the CMPH, trench, and cable.
Table 1 to open the enclosure and prepare the hole or trench and the
cables or conduit. Verify the base installation site is ready and
suitable for metallic stakes.
2.
h
Remove stakes from CMPH
framework.
Two mounting
stakes are packed with the
CMPH and attached to
the frame with cable ties.
Detach the stakes from the
frame and remove the
packing used for shipping
purposes.
Cut the cable ties
which secure the
stakes to the frame
3.
h
Determine which grooves to use for stakes.
The base contains a
molded-in dual-purpose groove at the center of each wall to accept
the U-shaped mounting stakes (as well as the U-shaped vertical
channels of the frame). Per local company practice and site
conditions, select two wall grooves that are appropriate for stake
attachment purposes (the grooves on the narrow walls are typically
used).
Base Bottom View
Open
Inside
Area
Alternate Mounting
Grooves
(generally used
in vault applications)
25.5"
29.5"
2"
1.5"
2"
17"
Base Top View
Preferred U-shaped channel
grooves for mounting stakes
4.
h
1.6"
1.1"
Top View
of Stake
Set stake
into groove
Attach stakes to grooves in base.
Set the base on the ground or a
raised surface to access the grooves through the base bottom. On
the inside of the base, remove the nuts and washers from the bolts
(which are 4” apart) that secure the frame channels in place. On the
mounting stake, the distance between the first and third hole down
from the top of the stake is 4”. Insert the top of the stake into the
base, rotate the stake so it will fit properly into the base groove (so
the perimeter contours match), align the stake holes with the bolts in
the base, and set the stake in place in the groove. Attach the lock
washers and nuts that were removed to secure both the mounting
stake and frame channel in place. Repeat for the other stake.
Base Side View
4"
1"
1.3"
B
olt for frame channel
and stakes
4"
Charles
Stake
Top View of Base
Wall at Groove
1.125"
3"
1"
1"
1.2"
Carriage
Bolt
3"
5.
h
Verify hole or trench accommodates stake length.
Lift the base
and attempt to place it back in place in the trench or hole. If the
trench is deep enough to accommodate the length of stake
protruding from the bottom of the base, skip the rest of this step. If
the hole or trench is not deep enough to accept the stakes, and the
weight of the base is not enough to drive the stakes the length
needed to allow the base to rest at its proper depth, then once again
use the base as a template to mark the exact stake locations in the
ground where more soil must be removed. Remove the base from
the hole, and at the stake-hole indentations, dig down just enough to
accommodate the length of the stake.
6.
h
Set base in place, bring cables into base.
When the hole is deep
enough for the stakes, again lift the base by its walls or ribs and set
it back into the hole, being sure to enclose or encompass within the
base all cables, innerduct, conduit or equipment present at the site
and intended for storage inside the enclosure.
7.
h
Finish the installation.
Perform Steps 14 through 24 in Table 1 to
finish the installation. Be sure to backfill and firmly tamp soil
into the
stake holes
when backfilling.
Table 3. Installing Replacement or Rehabilitation Enclosures
Step #
Instructions
The Charles CMPH has the same footprint as the UPC 1200 series. These instructions describe
how to replace a UPC 1200 with a Charles CMPH. To replace enclosures with smaller footprints,
remove the smaller enclosure and dig a wider hole, as described in Step 10 of Table 1.
1.
h
Prepare the base, trench, and cables.
Locate the old or existing
enclosure (such as the UPC 1200 series) to be replaced. Perform
Steps 1-8 of Table 1 to prepare the new Charles CMPH enclosure,
the hole or trench, and the cables or conduit (skip Steps 2-3 if
trenching and new cable placement is not required).
2.
h
Dig around existing enclosure.
Remove the dirt from around the
existing enclosure. Dig deep enough to allow the enclosure to be
lifted and removed.
3.
h
Prepare existing enclosure for removal.
Remove the bottom
panels of the UPC 1200. Locate the mounting stakes and remove
the nuts and bolts from them. Remove all attachments to the
enclosure, including cable supports and tie wraps, bonding
connections, and grounding connections.
4.
h
Remove the old enclosure.
Completely remove the existing
enclosure.
5.
h
Protect cables and connections.
Per company practice, wrap the
existing splice as tightly as possible without damaging the
connections.
6.
h
Analyze condition of existing mounting stakes.
Inspect the
existing mounting stakes for possible re-use.
If
they are
deteriorated, bent, out of alignment, or have a hole pattern that will
not work with the Charles CMPH base, carefully remove the stakes
and install new ones per company practice (consult Table 2 if
desired).
7.
h
Optional - remove the CMPH’s horizontal splice bars and/or
ground bracket.
Analyze whether or not it will be necessary to
temporarily remove any of the CMPH’s internal, horizontal,
supportive splice bars or brackets in order to fit the existing cabling,
connections, splices, and equipment into the CMPH during the base
installation. After base installation, re-attach the bars and brackets
(Step 10).
