Weatherproofing Kit for Connectors and Antennas

Weatherproofing Kit for Connectors and Antennas
PUBLICATION
Weatherproofing Kit
for Connectors and Antennas
The kit can be used for one or more connections
depending on the configuration and cable type as follows:
Butyl rubber tape
Connection
type
2” (51-mm)
plastic tape
3/4” (19-mm)
plastic tape
Introduction
The application of sealing materials to antenna cable
connections protects them from weather conditions.
These include moisture penetration and loosening of
connections from vibrations caused by strong winds.
Andrew Corporation recommends weatherproofing
these connections according to the following procedures. Standard weatherproofing tapes, both butyl and
plastic electrical tapes, are applied to the following:
• main feeder cable-to-jumper cable connection and
• jumper cable-to-antenna connection.
Become thoroughly familiar with and apply the
Installation Tips given here.
Description
The use of this kit provides an additional moisture seal
for cable connections. It also prevents loosening of connections from vibration or other external stresses which
would eventually allow moisture penetration. The sealed
connection is suitable for typical exposed and buried
cable applications.
Cable
Connections
diameter
per kit
LDF12 (2-1/4") to LDF4 (1/2")
2-1/4” to 1/2”
(57 mm to 13 mm)
2
LDF7/VXL7 (1-5/8" to LDF4 (1/2")
1-5/8” to 1/2”
(41 mm to 13 mm)
2
LDF6/VXL6 (1-1/4") to LDF4 (1/2"
1-1/4” to 1/2”
(32 mm to 13 mm)
2
LDF5/VXL5 (7/8") to LDF4 (1/2")
7/8” to 1/2”
(22 mm to 13 mm)
4
LDF4 (1/2") to LDF4 (1/2")
1/2” to 1/2”
(13 mm to 13 mm)
12
VXL5 (7/8") to Device
7/8” to 1/2”
(22 mm to 13 mm)
12
LDF4 (1/2") to Device
1/2” to 1/2”
(13 mm to 13 mm)
12
Installation Tips
• When applied, the tape must be above 32°F (0°C) to
ensure adhesion. Keep tape warm by carrying in coat
pockets.
• Do not stretch the tape. Apply only enough tension to
provide a smooth wrap.
• Smooth each wrapped layer with your hands to
ensure full adhesion.
• Do not pull the tape to tear it - always cut it. Pulled
tape eventually unravels, decreasing protection.
• Add extra final layers of tape in warmer climates
where there will be long exposure to damaging ultra
violet (UV) rays. Two or thee extra layers of tape will
provide additional UV protection.
• On vertical runs, the last wrap of 3/4" tape should be
wrapped from the bottom to the top. This provides a
shingle effect.
• When wrapping tape, overlap the tape to half-width
as shown here.
Tape overlap
Installation Training Available at Andrew Institute
Andrew Corporation
10500 W. 153rd Street, Orland Park, IL U.S.A. 60462
SP50375-b 2 October 2002
Page 1 of 5
PUBLICATION
Feeder Cable to Jumper Cable Connection
1
Tighten the connection with
a torque wrench to the proper torque value to ensure that
correct internal seals and surface
contacts are made.
Torque wrench
Andrew 244377
Andrew 244379
For 7/8" (22-mm) to 1/2" (13-mm) connections, cut three
4" (102-mm) lengths of tape.
Form a tapered surface by starting with two tapes that
are folded to half-width and finishing with one full-width
tape.
Connector coupling
Connector type
Torque
7-16 DIN
18 - 22 lb·ft
N
15 - 25 lb·in
Rubber tape wrap
Plastic tape wrap
2
Prepare the cable by removing any cable markers
and drying the cable and connectors. Starting at 2"
(51 mm) from the feeder connector, wrap the connection with a layer of 3/4” (19-mm) plastic tape. Overlap
the tape to half-width and extend the wrapping 2” (51
mm) beyond the jumper connector or plastic strain relief
of a SureFlex™ jumper. Note: Do not remove the jumper
strain relief.
the rubber tape into three 12” (305-mm)
4 Cut
lengths for 2-1/4" (57-mm), 1-5/8" (41-mm), and 11/4" (32-mm) to 1/2" (13-mm) connections. For 7/8" (22mm) to 1/2" (13-mm) connections, cut three 8" (203mm) lengths of tape. For 1/2" (13-mm) to 1/2" (13-mm)
connections, cut three 8" (203-mm) lengths of tape.
Lay the three rubber tapes around the entire connection
so that they overlap. Pull the tape as needed for overlap. Press the tapes together along the overlaps.
End of 2" plastic tape wrap
Start of 3/4" plastic tape wrap
Rubber tape fill
the rubber tape into three 12” (305-mm) lengths
3 Cut
for 2-1/4" (57-mm), 1-5/8" (41-mm), and 1-1/4" (32-
mm) to 1/2" (13-mm) connections.
Andrew Corporation
10500 W. 153rd Street, Orland Park, IL U.S.A. 60462
the connection with a layer of the 2” (51 mm)
5 Wrap
tape and then three continuous layers the 3/4” (19
mm) plastic tape. Overlap each tape to half-width and
extend the wrapping 2” (51 mm) beyond the previous
tape.
SP50375-b 2 October 2002
Page 2 of 5
PUBLICATION
Jumper Cable to Antenna Connection
Due to the variability in design of base station antennas
at the point of connector interface, special attention
must be given to the application of weatherproofing
materials. The following illustrations demonstrate the
recommendations of Andrew Corporation in cases
where there is ample access to the connection and
where access is restricted.
Stretch rubber
Ample Access
Wrap
Smooth
an 5" (125-mm) length of rubber tape. Expand
3 Cut
the width of the tape by stretching it so that it will
Torque
wrench
Antenna
wrap completely around the connector and cable. Wrap
the tape around the cable connector and the cable.
Press the tape edges together so that there are no
gaps. Press the tape against the connection and cable.
The tape should extend 1" (25 mm) beyond the plastic
tape on the jumper.
Strain relief on
SureFlex™ cable
Tighten connection
1
Tighten the connection with
a torque wrench to the proper torque value to ensure that
correct internal seals and surface
contacts are made.
Torque wrench
Andrew 244377
Andrew 244379
Connector coupling
Connector type
Torque
7-16 DIN
18 - 22 lb·ft
N
15 - 25 lb·in
Plastic wrap
Cut
wrapping a layer of 2” (50-mm) plastic tape 1"
4 Start
(25 mm) below the rubber tape, overlapping at half
width. Finish the wrap at the flange of the antenna connector and cut the tape. Repeat this process for second
layer.
Start
here
Plastic wrap
Cut
Smooth
the connection with a layer of 3/4” (19-mm)
2 Wrap
plastic tape, starting at 1" (25 mm) from the con-
nector or plastic strain relief of a SureFlex™ jumper.
Overlap the tape to half-width and extend the wrapping
to the flange of the antenna connector. Avoid making
creases or wrinkles. Smooth the tape edges.
Andrew Corporation
10500 W. 153rd Street, Orland Park, IL U.S.A. 60462
Plastic wrap
Cut
wrapping three layers of 3/4” (19-mm) plastic
5 Start
tape 1" (25 mm) below the previous 2" (50-mm)
wrap, overlapping at half width.
SP50375-b 2 October 2002
Page 3 of 5
PUBLICATION
Restricted Access
Where access to the antenna connector and jumper
cable will be restricted for taping, most of the jumper
cable must be prepared before it is connected.
Plastic wrap
wrapping a layer of 2” (50-mm) plastic tape 1"
3 Start
(25 mm) beyond the rubber tape, overlapping at
half width. Finish the wrap at the connector clamping
nut and cut the tape. Repeat this process for a second
layer.
Plastic wrap
the cable and connector body with a layer of
1 Wrap
3/4” (19-mm) plastic tape, starting at 1" (25 mm)
from the connector body. Overlap the tape to half-width.
Do not tape the connector clamping nut. Avoid making
creases or wrinkles. Smooth the tape edges.
Plastic wrap
wrapping a layer of 3/4” (19-mm) plastic tape
4 Start
1" (25 mm) beyond the 2" (50-mm) tape, overlapping at half width. Finish the wrap at the connector
clamping nut and cut the tape. Repeat this process for
a second layer and a third layer.
Rubber wrap
Antenna
Torque
wrench
a 3-1/2" (90-mm) length of rubber tape.
2 Cut
Expand the width of the tape by stretching it so that
it will wrap completely around the connector body and
cable. Wrap the tape around the cable connector body
and the cable. Do not tape the connector clamping nut.
Press the tape edges together so that there are no
gaps. Press the tape against the connector body and
cable. The tape should extend 1" (25 mm) beyond the
plastic tape on the jumper.
Tighten connection
5
Connect the jumper cable to
the antenna connector.
Tighten the connection with a
torque wrench to the proper
torque value to ensure that correct internal seals and surface
contacts are made.
Torque wrench
Andrew 244377
Andrew 244379
Andrew Corporation
10500 W. 153rd Street, Orland Park, IL U.S.A. 60462
Connector coupling
Connector type
Torque
7-16 DIN
18 - 22 lb·ft
N
15 - 25 lb·in
SP50375-b 2 October 2002
Page 4 of 5
PUBLICATION
Hold roll and push tape
Uncoil tape from pencil
Apply tape in strips
wrapping three layers of 3/4” (19-mm) plastic
6 Start
tape 1" (25 mm) at the connector clamping nut,
Apply wide tape
overlapping at half width. The tape should extend 1" (25
mm) beyond the cable connector clamping nut.
The tape can be applied in one or more strips if necessary. A strip can be coiled onto an applicator such as a
pencil. Apply only enough tension to get good adhesion
and keep the tape smooth.
Completed wrapping
Apply narrow tape
two layers of 2" (50-mm) plastic tape and
8 Wrap
then three layers of 3/4” (19-mm) plastic tape to
complete the wrapping. Start each wrap 1" (25 mm)
from the previous wrap.
Rubber wrap
a 2" (50-mm) length of rubber tape. Expand
7 Cut
the width of the tape by stretching it so that it will
wrap completely around the connector body and clamping nut. Wrap the tape around the cable connector.
Press the tape edges together so that there are no
gaps. Press the tape against the connector body.
Andrew Corporation
10500 W. 153rd Street, Orland Park, IL U.S.A. 60462
Note: When removing the weatherproofing from connections, take precautions to not cut through the jacket
of the coaxial cable. If the jacket is cut, the rewrapping
should start at the point of the exposed copper outer
conductor.
Andrew 221213 Weatherproofing Kit Components
Part number
Description
9905-41
3/4" x 66' black plastic tape
9905-71
2" x 20' black plastic tape
42615-4
Butyl rubber tape
SP50375-b 2 October 2002
Page 5 of 5
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