3M™ External Cable Assembly Module
(ECAM) Double Cable Entry Port
ECAM-20MM-D
Instructions
April 2016
78-8140-3820-0-C
1.0 General
1.1 The 3M™ External Cable Assembly Module (ECAM) Double Cable Entry Port ECAM-20MM-D is designed
to accept fiber optic loose buffer tube & central tube ribbon type cables with external diameters of up to
20 mm (0.78"). The kit will accommodate cables with single or dual cable strength members (CSM).
2.0 Kit Contents
2.1 For all loose buffer tube and dielectric central tube cables.
ab
c
d
e
f
g
h
i
j
k
l
m
n
o
p
a. Mastic tape rolls (1)
b. Oval gasket
c. Sheath scuff
d. Silicone lubricant
e. Cable clamp shells (4 sets)
f. Vinyl caps (2)
g. Alcohol wipe
h. Cable clamp with 3 mtg. screws
i. Washers set (1 set shown) (4 sets)
j. Cable ties
k. Cable gauge decal
l. Mastic rope
m. Housing bottom half
n. Housing top half with 3 mtg. screws
o. Strength member clamps (2)
p. CSM bracket (riveted to housing bottom)
q. Instruction Manual 78-8140-3820-0-C
(not shown)
278-8140-3820-0-CApril 2016
2.2 For armored loose tube and armored central tube cables.
a
h
o
p
l
m
g
k
b
i
c
d
e
f
n
j
a. Mastic tape roll
b. Oval gasket
c. Sheath scuff
d. Silicone lubricant
e. Cable clamp shells (4 sets)
f. Alcohol wipe
g. Cable clamp w/3 mtg. screws
h. Washers set (4 sets)
i. Cable ties
j. Cable gauge decal
k. Mastic rope
l. Housing bottom half
m. Housing top half w/3 mtg. screws
n. Number 6 gauge ground wire (2)
o. 3M™ Scotchlok™ Shield Bond Connector
4460-D/FO-SS (2)
p. Instruction Manuals
Note: Visually inspect all components. If any component is missing or appears damaged, do not install.
Call 3M customer service at 1-800-426-8688 for a replacement product.
378-8140-3820-0-C April 2016
3.0 Dielectric Main Cable Preparation
Express loose buer tube cable
Express central tube cable
Branch or drop cable
6" (150 mm)
Trim single OR
dual CSM rods
3" (75 mm)
Scu sheath on
all cables
96" max (2.4 m)
Sheath removed
8" (200 mm)
Central tube
6" (150 mm)
Trim single OR
dual CSM rods
6" (150 mm)
Trim single OR
dual CSM rods
Typical cable prep for
express buer tube cable
Typical cable prep for
express central tube cable
Typical central tube
cable prep
96" max (2.4 m)
Sheath removed
72" (1.8 m)
Sheath removed
8" (200 mm)
Central tube trimmed
Armored Cable Central Strength Member
4" (200 mm)
Leave half of cable sheath
w/ metallic shielding to
attach grounding
6" (150 mm)
Trim CSM rod(s)
Measure sheath
opening to here
Otherwise same as dielectric cable preparation.
Armored Central Tube Cable with Dual Strength Members
4 ¼" (108 mm)
Leave half of cable sheath
w/ metallic shielding to
attach grounding
6" (150 mm)
Trim CSM rod(s)
72" (1.8 m)
Sheath removed
4 ¼" (108 mm)
Central tube trimmed
478-8140-3820-0-CApril 2016
4.0 For Armored Cables Only
4.1 The following two grounding kits are available:
3M™ Internal Ground Kit
ECAM-GND-6-AWG (80-6113-1702-7)
3M™ Internal Ground Kit
ECAM-GND-14-AWG (80-6113-1704-3)
4.2 Prepare cable as described in the previous
armored cable prep setion. Wrap the sheath with
Scotch® All Weather Telephone Vinyl Plastic
Tape 88T or equivalent to protect fiber from the
sharp cable sheath edges. Do not wrap last inch
(25 mm) of the cable sheath.
4.3 Prepare the closure base by locating the ground
studs inside the closure base. Loosen the upper
nut three to four turns on the ground stud inside
the closure using a ½-inch (13 mm) nut driver. It is
not necessary to remove the small vinyl caps.
4.4 Place the forked end of the ground wire between
the pair of washers. Re-torque the ground stud nut
to 30 in-lbs.
4.5 Position and route the grounds to minimize
interference with cable ports and splicing. Cable
end ground connections are made after the cables
are installed in the base.
Note: The installation and removal of the 3M™ External
Cable Assembly Module (ECAM) Double Cable
Entry Port is the same for both the metallic and
the non-metallic versions. For demonstration
purposes, the metallic version will be used
throughout the instruction manual.
578-8140-3820-0-C April 2016
5.0 Cable Assembly Removal
5.1 Using a /-inch (10 mm) nut driver, loosen
the clamp screws on the 3M™ External Cable
Assembly Module (ECAM). Pull the clamps
outward and rotate as shown. Lightly re-tighten
screw to hold clamps in place.
5.2 Loosen the three screws and separate the top and
bottom halves of the 20MM ECAM double cable
assembly using a /-inch (10 mm) nut driver.
Note: Keep the short screw in location shown.
5.3 Loosen the three screws to remove the cable
clamp from the bottom half of the of the 20 mm
ECAM double cable assembly using a /-inch
(10 mm) nut driver.
6.0 Cable Gauge Decal
Use the supplied cable gauge to determine the
proper cable clamp shells, washers and correct
amount of mastic needed to build a sealing collar.
6.1 Place cable gauge decal on cable as shown below.
Be sure to place decal in-line with the cable.
Correct
Incorrect
678-8140-3820-0-CApril 2016
6.2 Read between the arrows on the decal to
determine the amount of mastic, clamp shells
and washer needed to properly assemble the
3M™ External Cable Assembly Module (ECAM)
Double Cable Entry Port ECAM-20MM-D. This
information can be recorded in the log below.
Note: If the arrows on the decal point at the line between
below the line. Also note that no clamp shells
are required if the gauge indicates ‘NONE’ in the
shell column.
procedure for the second cable and record this
information in the Cable 2 section of the log.
Log
Mastic
cut length
Cable
clamp shells Washers
Cable 1
Cable 2
Note: To plug an unused port in the ECAM assembly, use
8.0 inches (203 mm) of mastic rolled into a cylinder.
7.0 Cable Clamp Shell Selection
7.1 Locate the clamp shells on the clamp shell tree.
Note that each clamp shell is numbered. Remove
the required clamp shell sets from part tree. Make
two sets of clamp shells for each cable.
7.2 If multiple shells are required for a specific cable
size, locate these and assemble them into sets.
7.3 Note the orientation of pin and socket and
assemble as shown.
778-8140-3820-0-C April 2016
7.4 Assemble the clamp shell(s) into the cable clamp.
Note the orientation of pin and socket and
assemble accordingly.
7.5 Assemble the clamp shell(s) onto the bottom half
of the cable housing. Note the orientation of the
pin and socket and assemble accordingly.
clamps. Ensure that the correct clamp set matches
the cable when assembling in the bottom housing
and the cable clamp.
8.0 Cable Seal Installation
8.1 First clean the cable sheath thoroughly using an
alcohol wipe. Make sure the cable sheath is free
of any grease or dirt.
Note: Carefully follow health, safety and environmental
instructions as given on the Safety Data Sheet for
the alcohol wipe.
the cable.
narrow strips along the length of the strip.
Washer Selection
8.2 Locate and remove two washers on parts trees for
each cable (four washers total). Note that washer
sizes are labeled on the washer as shown below.
Note that inches are on one side of the washer and
millimeters are on the other side.
Note: See chart in section 6.2 for required washer.
878-8140-3820-0-CApril 2016
Mastic Collar Build
8.3 Mark the cables approximately .25 inches (6 mm)
from the end of sheath. This is to locate the
mastic collar.
8.4 Washers can be split along the notch for
installation over the cable.
8.5 Install two washers on each cable near the sheath
end as shown.
8.6 Unroll the mastic and measure out the required
amount. Repeat for second cable.
Note: See chart in section 6.2 for required mastic length.
Note: Warm mastic before use if temperature is below
8.7 Trim the corners from the mastic, forming points
at both ends.
978-8140-3820-0-C April 2016
8.8 Wrap the mastic starting .25 inches (6 mm) from
the sheath end. Wrap the mastic evenly around
the cable. Do not stretch the mastic.
8.9 The release liner can be wrapped around the
mastic collar temporarily to keep the mastic clean.
cable into 3M™ External Cable Assembly Module
(ECAM) Double Cable Entry Port ECAM-20MM-D
housing. Relocate washers next to the collar.
Repeat for second cable.
8.10 Peel the mastic rope from the liner and place
into the groove in the ECAM Double Cable Entry
Port bottom half. Press the mastic rope in place
and route as shown. Make sure at least .25 inches
(6 mm) of the mastic rope extends out both ends
as shown.
8.11 Install the first cable into ECAM housing bottom
half. Note the grooves in the housing for locating
washers.
is placed into the correct cable clamp shell set in the
bottom housing.
Note: On cables prepared for grounding, install the cable
into the bottom housing with cable sheath tab
facing up as shown.
10 78-8140-3820-0-CApril 2016
8.12 Install the second cable into the housing. Note
that the washers are offset from the first set.
Note: Ensure the washers are properly seated into their
corresponding grooves in the bottom housing.
8.13 Install the cable clamp by positioning it over the
cable set.
cable is placed into the correct cable clamp shell set
in the bottom housing.
8.14 Start the center clamp screw and lightly tighten.
Evenly tighten the two outer screws along with the
center screw by alternating between. Torque the
three clamp screws to 30 inch-lbs.
8.15 Place top half of the 3M™ External Cable
Assembly Module (ECAM) Double Cable Entry
Port ECAM-20 mm-D over the bottom half. Align
the top and bottom housings and squeeze the
halves together evenly.
CAUTION
1178-8140-3820-0-C April 2016
8.16 Start all three of the screws. Then evenly
tighten the three clamp screws by alternating
between screws.
A
A
B
8.17 Finish tightening the two screws marked 'A' until
the gaps between the halves under are closed or
nearly closed. Then finish tightening the screw
marked 'B'. Torque all three screws to 45 in.-lbs.
Note: Do not exceed 50 in.-lbs. of torque.
8.18 Trim excess mastic with snips or a knife.
Leave /-inch (4 mm) of the ends of the rope
mastic protruding.
8.19 Press mastic flat using a finger tip.
9.0 Cable Strength Member
Installation (For all loose
buffer tube and dielectric
central tube cables)
9.1 Remove the vinyl caps and the cable strength
member (CSM) clamps from the CSM bracket.
Position the CSM rod next to the bracket and trim
it to fit as shown.
12 78-8140-3820-0-CApril 2016
9.2 Reinstall the CSM clamps as shown and torque to
25 inch-lbs.
9.3 Cut a ½" (13 mm) slit in each cap. Then install
the protective cap over CSM clamp. Position slit
as shown.
9.4 Color-coded cable ties can be installed at this time
to attach caps and can also be used to identify
feeder or distribution cables.
10.0 Cable Strength Member
Installation (For armored
loose tube cable)
10.1 Please refer to 3M™ Scotchlok™ Shield Bond
Connectors 4460-D, 4460-DS, 4460-D-SS
instruction manual for shield bond installation.
1378-8140-3820-0-C April 2016
11.0 Cable Strength Member
Installation (For armored
central tube cable)
11.1 Please refer to 3M™ Scotchlok™ Shield Bond
Connector Assembly 4460-D/FO-SS instruction
manual (78-8128-0289-6) for shield bond
installation.
12.0 Ground Wire Installation
12.1 Metallic Version: Please refer to 3M™ Scotchlok™
Shield Bond Connector Assembly 4460-D\
FO instruction manual (78-8128-0289-6-C) for
ground wire installation.
12.2 Non-Metallic Isolated version: Please refer
to 3M Scotchlok Shield Bond Connector Assembly
4460-D\FO-SS instruction manual (78-8128-
0289-6-C) for ground wire installation.
13.0 3M™ External Cable Assembly
Module (ECAM) Double Cable
Entry Port ECAM-20 mm-D
Installation
13.1 Lightly lubricate the oval gasket using the supplied
silicone lubricant before installing the gasket into
the groove in the base of the 3M™ Fiber Dome
Closure.
Note: Follow health, safety and environmental
information. Refer to product label or the
Safety Data sheet for silicone lubricant.
13.2 Feed the cable through the oval port.
CAUTION
14 78-8140-3820-0-CApril 2016
13.3 Position the 3M™ External Cable Assembly Module
(ECAM) Double Cable Entry Port ECAM-20 mm-D
assembly with the CSM bracket facing down.
Correct
Incorrect
13.4 Loosen clamps and position over double
Torque screw to 45 inch-lbs.
14.0 Replacement Procedure
The following procedure will outline how to
replace a 3M Double External Cable Assembly
needed with this process, please call 3M Technical
Service at 1-800-426-8688.
14.1 First, remove the dome lid by releasing the bale/
bales of the closure.
14.2 Next, remove the metal bracket from the basket,
if present.
14.3 Unlatch the strap holding the tray/trays in place.
1578-8140-3820-0-C April 2016
14.4 Carefully remove the tray/trays from the basket,
ensuring that no fibers are damaged. Set the tray/
trays aside.
14.5 Next, to allow fiber slack, cut and remove any
cable ties, if present, from the fiber bundle in
the basket.
14.6 Loosen the bolts on the 3M™ Double External
Cable Assembly Module (DECAM) clamps on the
outside of the closure. This can be done with a can
wrench or similar.
14.7 Next, carefully remove the DECAM from the base
of the dome.
Important: As the DECAM is being removed, ensure that
components of the dome.
14.8 If possible, secure the DECAM to a stable surface.
14.9 Loosen the three (3) bolts on the outer shell of
the DECAM. This can be done with a can wrench
or similar.
16 78-8140-3820-0-CApril 2016
14.10 Loosen the three (3) bolts on the inner clamp.
This should be done using a large flat-head screw
driver or a long-shaft narrow nut driver.
14.11 Loosen the dog house nuts holding the central
strength members, if present. This can be done
with a can wrench or similar.
14.12 Next, take a flat-head screw driver and slide it
into the back of the 3M™ Double External Cable
Assembly Module (DECAM), between the cable
clamp sets.
14.13 Use the screw driver to separate the shell halves
from each other.
14.14 Carefully remove the cables from the DECAM
shell and separate the cables from each other.
14.15 Slide the plastic washers down the cable and away
from the mastic material. Using sharp snips cut the
length of the mastic material, getting as close to
the cable as possible.
1778-8140-3820-0-C April 2016
14.16 Next, peel the mastic material off of the cable.
14.17 Lastly, re-scuff the cable ends to ensure all mastic
material has been removed.
Proceed to Section 8, “Cable Seal Installation”
Communication Markets Division
6801 River Place Blvd.
Austin, TX 78726-9000
Phone 1-800-426-8688
Web www.3M.com/Telecom
Please recycle. Printed in USA © 3M 2016.
All rights reserved. 78-8140-3820-0-C
3M, Scotch and Scotchlok are trademarks of 3M Company.
Important Notice
All statements, technical information, and recommendations related to 3M’s products are based on information believed to be reliable, but the
accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended
application. You assume all risks and liability associated with such use. Any statements related to the product which are not contained in 3M’s current
publications, or any contrary statements contained on your purchase order shall have no force or eect unless expressly agreed upon, in writing, by an
authorized ocer of 3M.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture for a period of one (1) year from the time of purchase. 3M MAKES NO OTHER
WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the
3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any direct, indirect, special,
incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted.
