Federal Signal Corporation 2001-130 User manual

FEDERAL SIGNAL CORPORATION
2001-130
ELECTRO-MECHANICAL SIREN
INSTALLATION AND OPERATING INSTRUCTIONS
Copyright 2007 Federal Signal Corporation
255369E
2/13

i
IMPORTANT NOTICE
Federal Signal reserves the right to make changes to devices and
specifications detailed in the manual at any time in order to improve
reliability, function or design. The information in this book has been
carefully checked and is believed to be accurate; however, no
responsibility is assumed for any inaccuracies.

ii
SAFETY NOTICES
People’s lives depend on your selection of suitable equipment and installation sites and your
safe installation, service, and operation of our products. Federal Signal recommends the following
publications from the Federal Emergency Management Agency for assistance with planning an
outdoor warning system: 1. The “Outdoor Warning Guide” (CPG 1-17), 2. “Civil Preparedness,
Principles of Warning” (CPG 1-14), 3. FEMA-REP-1, Appendix 3 (Nuclear Plant Guideline), and
4. FEMA-REP-10 (Nuclear Plant Guideline). Contact Federal Warning System’s Customer Care
Center at: http://www.federalwarningsystems.com or 1-800-524-3021 for further information
about these publications.
It is important to read, understand and follow all instructions shipped with this product. In addition,
listed below are some other important safety instructions and precautions you should follow.
PLANNING
If suitable warning equipment is not selected, the installation site for the siren is not selected
properly or the siren is not installed properly, it may not produce the intended optimum audible
warning. Follow Federal Emergency Management Agency (FEMA) recommendations.
If sirens are not activated in a timely manner when an emergency condition exists, they cannot
provide the intended audible warning. It is imperative that knowledgeable people, who are
provided with the necessary information, are available at all times to authorize the activation of
the sirens.
When sirens are used out of doors, people indoors may not be able to hear the warning
signals. Separate warning devices or procedures may be needed to effectively warn people
indoors.
The sound output of sirens is capable of causing permanent hearing damage. To prevent
excessive exposure, carefully plan siren placement, post warnings, and restrict access to
areas near sirens.
Activating the sirens may not result in people taking the desired actions if those to be warned
are not properly trained about the meaning of siren sounds. Siren users should follow FEMA
recommendations and instruct those to be warned of correct actions to be taken.
A siren that doesn’t work won’t provide any warning. After installation, service, or
maintenance, test the siren system to confirm that it is operating properly. Test the system
regularly to confirm that it will be operational in an emergency.
If future service and operating personnel do not have these instructions to refer to, the siren
system may not provide the intended audible warning and service personnel may be exposed
to death, permanent hearing loss, or other bodily injury. File these instructions in a safe place
and refer to them periodically. Give a copy of these instructions to new recruits and trainees.
Also, give a copy to anyone who is going to service or repair the siren.

iii
SAFETY NOTICES
People’s lives depend on your safe installation, service and operation of our products. It is
important to read, understand and follow all instructions shipped with this product. In addition,
listed below are some other important safety instructions and precautions you should follow:
INSTALLATION & SERVICE
Electrocution or severe personal injury can occur when performing various installation and
service functions such as making electrical connections, drilling holes, or lifting equipment.
Therefore experienced electricians in accordance with national, state and any other electrical
codes having jurisdiction should perform installation. All work should be performed under the
direction of the installation or service crew safety foreman.
The sound output of sirens is capable of causing permanent hearing damage. To prevent
excessive exposure, carefully plan siren placement, post warnings and restrict access to areas
near the sirens. Sirens may be operated from remote control points. Whenever possible,
disconnect all siren power including batteries before working near the siren.
After installation or service, test the siren system to confirm that it is operating properly. Test
the system regularly to confirm that it will be operational in an emergency.
If future service personnel do not have these warnings and all other instructions shipped with
the equipment to refer to, the siren system may not provide the intended audible warning and
service personnel may be exposed to death, permanent hearing loss, or other bodily injury.
File these instructions in a safe place and refer to them periodically. Give a copy of these
instructions to new recruits and trainees. Also, give a copy to anyone who is going to service
or repair the sirens. For additional copies, call the Federal Warning Systems Customer Care
Center at 800-524-3021 or write to them at 2645 Federal Signal Drive, University Park, IL
60466.
OPERATION
Failure to understand the capabilities and limitations of your siren system could result in
permanent hearing loss, other serious injuries or death to persons too close to the sirens when
you activate them or to those you need to warn. Carefully read and thoroughly understand all
safety notices in this manual and all operations-related-items in all instruction manuals shipped
with equipment. Thoroughly discuss all contingency plans with those responsible for warning
people in your community, company, or jurisdiction.

iv
Limited Warranty
The Federal Warning Systems Division of Federal Signal Corporation warrants each
new product to be free from defects in material and workmanship, under normal use and
service, for a period of two years on parts replacement and factory-performed labor (one
year for Informer, EAS, and Federal software products) from the date of delivery to the
first user-purchaser. Federal Warning Systems warrants every 2001 & Eclipse Siren
(Top of pole only) to be free from defects in material, per our standard warranty, under
normal use and service for a period of five years on parts replacement.
During this warranty period, the obligation of Federal is limited to repairing or replacing,
as Federal may elect, any part or parts of such product which after examination by
Federal discloses to be defective in material and/or workmanship.
Federal will provide warranty for any unit which is delivered, transported prepaid, to the
Federal factory or designated authorized warranty service center for examination and
such examination reveals a defect in material and/or workmanship.
This warranty does not cover travel expenses, the cost of specialized equipment for
gaining access to the product, or labor changes for removal and re-installation of the
product. The Federal Signal Corporation warranty shall not apply to components or
accessories that have a separate warranty by the original manufacturer, such as, but not
limited to, batteries.
Federal will provide on-site warranty service during the first 60-days after the completion
of the installation, when Federal has provided a turn-key installation including
optimization and/or commissioning services.
This warranty does not extend to any unit which has been subjected to abuse, misuse,
improper installation or which has been inadequately maintained, nor to units which have
problems related to service or modification at any facility other than Federal factory or
authorized warranty service centers. Moreover, Federal shall have no liability with
respect to defects arising in Products through any cause other than ordinary use (such
as, for example, accident, fire, lightning, water damage, or other remaining acts of god).
THERE ARE NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT
NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL FEDERAL BE LIABLE FOR
ANY LOSS OF PROFITS OR ANY INDIRECT OR CONSEQUENTIAL DAMAGES
ARISING OUT OF ANY SUCH DEFECT IN MATERIAL WORKMANSHIP.
2645 Federal Signal Drive, University Park, IL 60466
Phone: [phone] Fax: [phone]
Website: http://www.federalwarningsystems.com

v
WARNING
Read and understand the information contained
in this manual before attempting to install or
service the siren.
Pay careful attention to the following notices located on the equipment.
NOTICES –EXTERNALLY PLACED.

vi
TABLE OF CONTENTS
Paragraph Page
SECTION I - CHARACTERISTICS
1-1 Scope of this Manual ............................................................................. 1
1-2 General .................................................................................................. 1
1-3 Siren Description ................................................................................... 1
1-4 Signal Description .................................................................................. 1
SECTION II - SPECIFICATIONS
2-1 Specifications ........................................................................................ 2
SECTION III - INSTALLATION
3-1 Siren Location ........................................................................................ 3
3-2 Siren Installation .................................................................................... 4
3-3 Siren Wiring ........................................................................................... 6
3-4 Pre-operation Checkout ......................................................................... 8
SECTION IV - SERVICE AND MAINTENANCE
4-1 General .................................................................................................. 9
4-2 Inspection .............................................................................................. 9
4-3 Corrective Maintenance ......................................................................... 10

1
SECTION I
CHARACTERISTICS
291343A
Figure 1-1. Model 2001-130
1-1. SCOPE OF THIS MANUAL.
This service manual describes the
characteristics, specifications, installation,
controls/theory of operation, and service and
maintenance of the Federal 2001-130 siren.
1-2. GENERAL.
Federal’s 2001-130 siren (Figure 1-1) is
an electro-mechanical, DC, rotating siren that
is capable of producing high intensity
warning signals over a large area. A highly
efficient design enables the siren to produce
a high sound level, while making moderate
demands on the power source.
1-3. SIREN DESCRIPTION.
The 2001-130 siren is a single tone siren
capable of producing a 130 dB sound level at
100 feet for a minimum of 15 minutes, when
using the DCB Control Unit/Battery Box with
fully charged, standard, deep-cycle, marine
batteries. 30-minute duty cycle operation is
available with option 2001TRB. This option
supplies DC current directly to the siren from
a 208/220 or 240, optionally 480VAC line.
Two motors are used to create the siren
signals. One motor rotates the siren
assembly. The second motor, which
produces the sound energy, is attached to a
stator with a rotor mounted on the motor
shaft concentric to the stator. The rotor and
stator each contain one row of ports. As the
motor rotates the rotor, air is drawn into the
rotor and passes through the rotor and stator
ports in pulses. These pulses are produced
when the rotor alternately opens and closes
the stator ports. The pulses of air produce
sound at a frequency (pitch) that is
dependent upon the rotational speed of the
motor and the number of ports in the rotor-
stator combination.
1-4. SIGNAL DESCRIPTION.
The 2001-130 siren is capable of
producing a steady signal and a wailing
signal. The steady signal is frequently used
as a Civil Defense “Alert” signal. The wailing
signal is often used as a Civil Defense
“Attack” signal. Any of the signals are
capable of being used for any desired
application. These signals are shown
graphically in Figure 1-2.
Figure 1-2. Signal Characteristics.

2
SECTION II
SPECIFICATIONS
Power Requirements*
Siren Motor..................................................48V (DC or full wave
rectified AC) 100 amps (nom.)
Rotator Motor...............................................48V (DC or full wave
rectified AC) 1 amp (nom.)
Wiring
Siren Motor..................................................2 AWG
Rotator Motor...............................................14 AWG
Motor Type
Siren............................................................Series Wound DC 6.5 Hp
Rotator.........................................................Permanent Magnet DC 1/8 Hp
Signal Information
Signal Frequency Range Sweep Rate
STEADY 790Hz N.A.
WAIL 470 - 790Hz 10 sec.
FAST WAIL 600 - 790Hz 3.6 sec.
Signal Duration ...........................................3 min. (programmable)
Sound Output (SPL) ...............................................130dBc +/-1dBc (on axis)
at 100' (30.5m.)
Rotation ..................................................................3 RPM
Dimensions (HWD) .................................................62" x 37" x 41"
1574mm x 940mm x 1041mm
Shipping Weight .....................................................450 pounds (204kg.)
Siren Weight ...........................................................420 pounds (191kg.)
Operating Temperature ..........................................-30C to +60ºC**
* Power requirements refers to the power supplied by the batteries or optional AC operation
with battery back up.
** The siren can operate throughout this temperature range provided the battery temperature
is maintained at -18ºC or higher.

3
SECTION III
INSTALLATION
DANGER
Electrocution or severe personal
injury can occur when making
electrical connections, drilling holes,
or lifting equipment. Therefore,
installation should be performed by
experienced electricians in
accordance with national and local
electrical codes.
3-1. SIREN LOCATION.
The information in this section provides
guidelines to aid the user in the selection of
an installation site that makes the best
possible use of the siren.
WARNING
The output level of a 2001-130 siren
is capable of causing permanent
hearing damage. To prevent
excessive exposure, carefully plan
placement of siren and post
warnings.
If the siren is being installed as part of a
Community Warning system, ALWAYS follow
Federal Emergency Management Agency
(FEMA) recommendations.
Careful consideration of the factors
affecting the propagation of sound from the
siren and the response of the human ear to
the sound will optimize the ability of the siren
to effectively warn the community.
The reduction of signal intensity as the
distance from the siren increases and the
minimum desired signal level at the fringe of
the area to be covered are important
considerations when choosing a siren
installation site. As the distance from the
siren increases, sound level losses
accumulate. These losses are a result of
weather conditions, the terrain, obstructions
in the sound path, the pitch of the sound and
the height of the siren.
Optimum sound propagation conditions
exist when there are no obstructions in the
sound path, the terrain is flat, and the air is
calm. Under these conditions, each time the
distance from the siren is doubled, the sound
level decreases by approximately 10dB. For
example, the sound level at 100 feet (30.5m)
from a 2001-130 siren is 130dB. At 200 feet
(61m), the level drops to 120dB; at 400 feet
(122m) the sound level drops to 110dB, etc.
This is referred to as the “loss per distance
doubled”.
A loss per distance doubled of 10dB is
usually experienced because buildings and
other obstructions are frequently present in
the sound path. In addition, the atmosphere
is rarely calm, and the terrain may not be flat.
As a result, a typical loss per distance
doubled in residential areas may be 10dB,
and as high as 12dB in areas having tall
buildings or other factors detrimental to
sound propagation.
Experience indicates an individual with
normal hearing will probably hear a warning
signal whose intensity is at least as high as
the ambient noise level.
Experience has also shown that the
ambient noise level in industrial districts is
typically 90dB. Therefore, for a person to
hear a warning signal in an industrial area,
the sound level intensity of that signal must
also be approximately 90dB. In this situation,
any point receiving a signal having less than
90dB intensity is considered to be outside the
effective range of the siren.
In business districts an ambient noise
level of 80dB is common, and in residential
areas, 68dB of ambient noise is typical.
Assuming a 10dB loss per distance doubled
and a 70dB minimum sound level, the

4
effective range of the 2001-130 siren is
approximately 6400 feet.
Wind speed and direction often affect the
propagation of sound from the siren.
Consequently, the direction of the prevailing
wind may also be a factor to consider when
selecting the installation site(s) of a small,
one or two-siren system. For example, if the
prevailing wind is from the west, it may be
desirable to install the siren toward the
western edge of the area to be covered.
Other factors to consider before
selecting the installation site include the
availability of electrical power, the ease of
installation and maintenance, the height of
surrounding obstructions, and security
against vandalism.
3-2. SIREN INSTALLATION.
A. General.
Most siren installations are one of two
types: Pole Mount or Flat Surface Mount.
These two configurations make it possible to
install a siren in almost any situation. If the
installations in this paragraph are not
suitable, modification of one of the
configurations may be practical.
A siren is typically installed 40-50 ft. above
the ground. If the installation is located less
than 40 ft. above the ground, the sound
intensity at close range may increase, but at
the same time the effective range of the siren
may be reduced. Conversely, if the siren is
located more than 50 ft. above ground, the
effective range of the siren may increase, but
the sound may skip over areas closer to the
siren. These variables may make it desirable
to test the sound coverage of the siren at
various heights and locations whenever
possible.
B. Pole Mounting.
A typical siren pole-mounted installation
is shown in Figure 3-1. The siren is mounted
on a Southern Yellow Pine, Douglas Fir or
equivalent Class 2 utility pole 40-50 ft. above
the ground. It is attached to the pole by
means of legs, as shown in Figure 3-2.
Figure 3-1. Typical Pole-mounted Installation

5
Figure 3-2. Siren Leg Assembly.
Using the 3 ft. long angle iron legs, the
siren is mounted on the Class 2 utility pole as
follows:
1. Uncrate the siren and remove the
nuts that hold the siren on the shipping base.
Lift the siren approximately 3-1/2 ft. with a
crane or hoist.
2. Install the four legs on the siren
mounting plate, as shown in Figure 3-2. Use
two 1/2" bolts, nuts and lockwashers
(provided) for each leg. Do not tighten the
bolts completely.
WARNING
The lifting bracket does NOT have
sufficient strength to support the
combined weight of the siren and a
utility pole. Therefore, do NOT
attempt to erect the pole and siren
together using the bracket as a
lifting point.
3. Erect the utility pole in accordance
with accepted practices. Be sure the pole
extends at least 40 ft. above the ground
(refer to WARNING above).
4. Raise the siren to the necessary
height, and lower it over the pole.
5. Adjust the legs and insert shims, if
necessary, between the siren legs and pole.
The legs adjust to a diameter between 7.53”
and 12.25” (See Figure 3-3). Bolt the siren to
the pole using two 5/8" galvanized lag bolts
with washers and split lockwashers per leg.
At least four inches of lag bolt must be
screwed into the pole. Tighten all bolts.
Figure 3-3. Leg Assembly Diameters.
C. Flat Surface Mount.
This installation configuration is practical
when the installation site is on a flat roofed
building. The siren can be anchored directly
to the roof, on a platform as shown in Figure
3-4, or on a weight distribution mat like the
one shown in Figure 3-5.
This mat is required when the siren
mounting surface is unable to support over
176 pounds per square foot (859kg per
square meter). The mat shown in Figure 3-4
1/2-13 HEX NUTS (8)
SPLIT LOCKWASHERS (8)
1/2-13 HEX HD. BOLTS (8)
LEGS (4)
SIREN
BASE PLATE
LEGS (4)
SEE DETAIL
BELOW
291307B

6
distributes the siren weight to approximately
25 pounds per square foot (122kg per square
meter). When installing the siren on a flat
roof, be sure that it clears the parapets or
other obstructions by at least ten feet.
To install a 2001-130 on a flat roof or other
flat surface, proceed as follows:
1. If desired, construct a platform for
mounting the siren, which must be capable of
supporting at least 435 lbs. (197kg.) as well
as withstanding a siren wind load of 100
mph. The platform must also be capable of
distributing its own weight plus the siren to a
value that is safe for the mounting surface.
Platform design and construction details
should be designed by a structural engineer
familiar with the building construction of the
intended install location. Locate the platform
at the siren installation site. The platform
must be properly anchored to the mounting
surface.
WARNING
The hoisting bracket does not have
sufficient strength to support the
combined weight of the siren and a
platform. Therefore, do NOT lift the
siren and platform together using
the bracket as a lifting point.
2. Hoist the siren to the installation site
using the lift bracket as a lifting point (refer to
WARNING above).
3. Anchor the siren to the mounting
surface with 1/2" lag bolts or nuts and bolts,
as appropriate through the mounting holes
(one in each corner) in the siren base plate
(see Figure 3-4, detail A). If the siren is
mounted directly on a roof, (without a
platform or weight distribution mat) be sure to
install waterproof joints at the points where
the mounting bolts pass through the roof so
that water does not enter the building.
Figure 3-4. Typical Surface-mounted Siren Installation

7
Figure 3-5. Weight Distribution Mat Construction
3-3. SIREN WIRING.
The 2001-130 is predrilled on two sides
for connecting a 1” conduit to either side. The
siren enclosure is rain tight. To maximize the
longevity of the siren, rigid watertight conduit
connections are recommended between the
2001-130 and the controller.
Three wires are required to operate the
2001-130. One #2 AWG red wire from the
48VDC chopper control contactor output of
the controller provides positive power to the
chopper motor. One #12 AWG red wire from
the rotator control contactor output of the
controller provides positive power to the
rotator motor. One #2 AWG black wire
provides a common 48VDC negative ground
between the ground plane of the control
cabinet and siren motors. See Figure 3-6 for
the wire connections in the 2001-130.
Consult the manual for the controller being
utilized to connect the wires from the head.
Figure 3-6. Wiring for Rotator Motor
All wire connections should be treated
with anti-oxidant to prevent corrosion from
moisture and natural processes. Care should
be taken to insure that all wire connections
are firmly tightened. To properly tighten the
wire connections in the terminal block, insert
the wire, firmly tighten the setscrew, move
the wires to loosen and repeat the process
until the wires are securely tightened.

8
3-4. PRE-OPERATION CHECKOUT.
After the siren has been completely
installed, perform the following checks before
putting the siren into service.
WARNING
The output sound level of a siren is
capable of causing severe hearing
discomfort or permanent hearing
damage. Therefore, ALWAYS wear
hearing protection when performing
tests or maintenance on the siren.
A. Make sure that all air intakes and
sound outlets are not obstructed.
B. Make sure all connections in the
Control Unit/Battery Box are correct and
properly tightened.
C. Activate all siren tones to verify they
are operating properly. The siren should
remain rotating during all alert tones.
D. After the installation is complete and
it has been established that the siren is
operating properly, Federal recommends that
all control devices be padlocked to
discourage tampering and vandalism.

9
SECTION IV
SERVICE
4-1. GENERAL.
DANGER
Service should be performed by
qualified personnel familiar with the
siren, associated controls, and
power sources being used. The
siren has moving parts, high
operating currents, explosive gases,
and corrosive materials that could
cause severe personal injury,
electrocution, or death. Before
servicing or maintaining, ensure that
remote activation cannot occur and
disconnect power to the siren and its
controls.
Experience has shown that all Federal
sirens are highly reliable devices. However, if
a siren failure does occur, Federal will
provide technical assistance with problems
that cannot be handled satisfactorily and
promptly locally. If assistance is desired,
contact:
FWS Customer Care Center
Signal Division
Federal Signal Corporation
2645 Federal Signal Drive
University Park, Illinois 60466
800-524-3021
WARNING
The output level of a 2001-130 siren
is capable of causing permanent
hearing damage. Therefore,
ALWAYS wear hearing protection
when performing tests or
maintenance on the siren.
To prevent the siren from sounding or
rotating, always turn off the power to the
siren at the disconnect switch and remove
the 48VDC, 4 AWG red wire in the Battery
Box before inspecting or maintaining the
siren.
4-2. INSPECTION.
Test the 2001-130 siren for proper
operation at least once a month. A daily test
at noon, curfew, or other selected time is
preferred. This not only enhances the
usefulness of the siren, but also instills public
confidence in the reliability of the warning
system.
In order to minimize the possibility of
siren failure, annual inspection and
maintenance is desirable. Battery
replacement should be performed
approximately every five years. This
schedule is only a suggested guideline. It
may be necessary to vary the schedule if the
siren is used frequently or if it is used in an
extreme climate.
A. Turn off the power to the siren at the
disconnect switch. Disconnect the 48VDC, 4
AWG red wire in the Control Unit.
B. Inspect the siren installation to be
sure that it is vertically oriented. Take
corrective action if a pole-mounted
installation is more than 5º from vertical or if
a roof or flat surface mount is more than 10º
from vertical. This will prevent lubrication
losses and excessive motor bearing wear.
C. Inspect all electrical and mechanical
connections. Make sure that all fasteners are
properly tightened.
D. Inspect all painted surfaces and
repaint as necessary.
E. Both the rotator motor and siren
motor have sealed and pre-lubricated
bearings. Therefore, neither of these motors
requires any additional lubrication.

10
4-3. CORRECTIVE MAINTENANCE.
This section includes illustrations that
may be helpful if the siren or rotator needs
repair.
WARNING
To prevent siren from sounding or
rotating, always turn off power at the
disconnect switch and disconnect
the 48VDC, 4 AWG red wire in the
Control Unit before performing any
maintenance on the siren.
A. Drive Band Adjustment.
1. When the drive band requires
adjustment, tightening is almost always
necessary. To determine if a drive band
adjustment is required:
(a). Turn off power to the siren at
the disconnect switch. Remove the 48VDC, 4
AWG red wire in the Control Unit.
(b). Attach a spring scale having a
capacity of at least 50 pounds (22kg.) to the
horn of the siren as shown in Figure 4-1.
0
20
120 100
80
60
40
291301A
Figure 4-1. Spring Scale Attachment to Siren.
(c). Pull on the scale until the horn
begins to rotate. Continue to rotate the horn
by pulling on the scale while reading the
scale. The scale should indicate between 25
to 30 pounds (11 and 13kg.). It may require
more than 40 pounds of force to start the
horn moving. However, after the horn is
moving, the scale indication should decrease
to some force within the specified range. If
the scale does not indicate between 25 and
30 pounds (11 and 13kg.), the drive band
requires adjustment.
2. To adjust the drive band:
(a). Perform steps (a)., (b)., and (c).
in paragraph 4-3.A.1. (above) to determine if
a drive band adjustment is necessary.
(b). Ensure that power to the siren is
disconnected.
(c). Remove the panel opposite the
conduit fitting on the rotator housing.
(d). Tighten the cross bolt with the
spring one or two turns (see Figure 4-2). DO
NOT tighten or loosen the cross bolt without
the spring. Attach the scale to the horn and
pull on the scale to rotate the horn. If the
scale does not indicate between 25 and 30
pounds (11 and 13kg.), repeat this step until
the scale indicates the proper force.
291300A
PINION GEAR
SPUR GEAR
ROTATOR
GEARMOTOR
TERMINAL
BLOCK
SIDE
PANELS
291300A
PINION GEAR
SPUR GEAR
ROTATOR
GEARMOTOR
TERMINAL
BLOCK
SIDE
PANELS
SPRING
Figure 4-2. Rotator Assembly Interior
CAUTION
If the cross bolt with the spring is
tightened so that more than 40
pounds (18kg.) of pull is necessary
to maintain manual horn rotation,
high winds may cause damage to
the rotator drive mechanism.
(e). Replace the panel on the
rotator housing.

11
B. Collector Ring Brush Replacement.
1. Remove the cover from the top of
the collector housing.
PLUGCOVER
WIRES
291302C
Figure 4-3. Collector Ring Housing
2. Note the wiring location before
removing the wires. (See Figure 4-3).
3. Remove the four bolts on the side of
the collector housing assembly (see Figure
4-4) and remove the brush assembly. Note:
Press down on brush assembly while
removing the four bolts. Brush assembly is
under spring tension while in position.
BRUSH
ASSEMBLY
TERMINAL
BLOCK
BOLTS(4)
291303D
PLUG
Figure 4-4. Installation/Removal Brush Assy.
4. Remove lead wire from brush
holder. Remove the worn brush from the
brush holder in the brush holder plate. (See
Figure 4-5).
BRUSH
HOLDER
BRUSH
291304C
Figure 4-5. Brush Holder Assy.
5. Insert the replacement brush into
the brush holder. Connect the lead wires to
the brush holder.
C. Collector Ring Removal.
1. Remove the brush assembly as
described above.
2. Disconnect the three wires from the
terminal block (TB5) inside the rotator
housing and begin feeding wires up into the
siren shaft (see Figure 4-2).
3. Federal suggests that the rotator
drive band be loosened, as described in
paragraph 4-4.B., to rotate the siren during
removal of the collector ringbolts.
CAUTION
To prevent damage to the cover
assembly, use a piece of wire to secure
the cover in an open position before
removing the housing’s back panel.
4. Remove the back panel to expose
the small plug on the collector housing
assembly.
5. Remove the small plug.
6. Manually rotate the siren and
remove each of the four bolts that hold in the
collector rings (see Figure 4-7). Access to
these bolts can be gained through the plug
opening.

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STAND-OFF
PLUG OPENING
REMOVE BOLT(4)
291305B
Figure 4-7. Collector Housing Opening
7. Remove the collector rings with
stand-offs and cables still attached (see
Figure 4-8).
8. Reassemble the collector rings,
stand-offs, and cables before reinstallation.
COLLECTOR RINGS
BOLTS/STAND-OFFS(4)
PLUG
OPENING
291306B
Figure 4-8. Collector Rings
9. To replace collector ring assembly,
align the stand-offs before replacing the four
bolts removed in step seven above.
10. Ensure that collector rings are
concentrically aligned before replacing the
brush assembly.
11. Replace the brush assembly.
12. Look through the plug opening and
ensure that brushes are contacting the
proper collector rings.
13. Replace the plug on the collector
housing assembly.
14. Replace the back panel.
D. Rotator Motor Replacement.
1. Remove the two rotator housing
panels (see Figure 4-2).
2. Replace the rotator motor.
Approximately a 1/64” gap between the teeth
of the two gears is required to avoid binding.
Re-tighten rotator motor bolts to a torque of
45 in. lbs.
3. Wire rotator motor and terminal
block as shown in Figure 3-6.
4. Grease all gear surfaces with Mobil
Mobilith SHC lithium based grease.
5. Replace housing panels.
E. Siren Motor Brush Replacement.
1. Remove the outer cone. Remove
the inner cone by removing the four 1/4-20
bolts which secure the cone to the four
internal mounting brackets (8402087E-01).
2. Note siren motor wiring and remove
both terminal connectors.
3. Remove steel mesh brush covers
from motor.
4. Replace worn brushes.
5. Replace steel mesh brush covers.
6. Replace terminal connectors,
lockwashers, and nuts. Tighten nuts.
7. Replace inner and outer cones.

13
Figure 4-9. 2001-130 Final Assembly, Sheet 1