Federal Signal Corporation 2001DC Owner's manual

FEDERAL SIGNAL CORPORATION’S
MODEL 2001DC
BATTERY OPERATED 2001 SIREN CONTROL SYSTEM
WITH
FEDERAL CONTROLLER, ONE-WAY SERIES (DFC)
INSTALLATION, OPERATION & SERVICE
MANUAL
255249 Rev. H
07/01

- i -
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 perform-
ing various installation and service functions such as making
electrical connections, drilling holes, or lifting equipment.
Therefore installation should be performed by experienced
electricians in accordance with national, state and any other
electrical codes having jurisdiction. All work should be per-
formed 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. Whenever possible, disconnect the siren batteries
before working near the speaker array.
• 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 Signal Community Warning Systems Group at 800-
548-7229 or write to them at 2645 Federal Signal Drive, Univer-
sity 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 on both sides of this
sheet and all operations-related- items in all instruction manuals
shipped with the equipment. Thoroughly discuss all contingency
plans with those responsible for warning people in your commu-
nity, company, or jurisdiction.

- 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. Follow Federal Emergency
Management Agency (FEMA) recommendations. Obtain copies of the latest revision of
FEMA’S “Outdoor Warning Guide (CPG 1-17) and “Civil Preparedness, Principals of Warning
(CPG 1-14) by calling FEMA at [phone] or writing to them at 500 C St., South West,
Washington, D.C. 20472. It is also 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 the 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, servicing, or repair, test the siren system to confirm
that it is operating properly. Test the system regularly to con
firm 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
Limited Warranty
The Signal Division, 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 (one year for VAR,
EAR, EAS, and Federal software products) on parts replacement and
one year on labor from the date of delivery to the first user-
purchaser. Federal Warning Systems warrants every 2001 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.
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. Batteries are not covered
under warranty.
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.
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.

iv
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.
A. NOTICES- EXTERNALLY PLACED.
B. NOTICES – INTERNALLY PLACED.

v
TABLE OF CONTENTS
Paragraph Page
SECTION I - CHARACTERISTICS
1-1 Scope of this Manual 1-1
1-2 Control Unit/Battery Box Description 1-1
1-3 Signal Description 1-1
1-4 Options 1-2
SECTION II - SPECIFICATIONS
2-1 System Power 2-1
2-2 Batteries and Charging System 2-1
2-3 AC Power Options 2-2
SECTION III - INSTALLATION
3-1 Control Unit/Battery Box Location 3-1
3-2 Control Unit/Battery Box Installation 3-1
3-3 Electrical Connections 3-2
3-4 Pre-operation Checkout 3-5
SECTION IV - SERVICE AND MAINTENANCE
4-1 General 4-1
4-2 Preventive Maintenance 4-1
4-3 Problem Checklist 4-2
Parts Location Diagram 4-3
Parts List 4-4
SECTION V - OPTIONS
5-1 Model 2001TR 5-1
5-2 Model 2001-240 5-3
5-3 Model 2001HTR 5-4
5-4 Radio Controller 5-4
5-5 2001HR 5-4

1-1
SECTION 1
CHARACTERISTICS
Figure 1-1. Model 2001DC.
1-1. SCOPE OF THIS MANUAL.
This service manual describes the characteristics, specifications, installation, and
service and maintenance of the Federal Model 2001DC Control Unit/Battery Box.
1-2. CONTROL UNIT/BATTERY BOX DESCRIPTION.
The Control Unit/Battery Box consists of two cabinets, which are channel mounted for
ease of installation (see figure 1-1). The upper cabinet (NEMA 4 enclosure) houses the
necessary electronics and controls for producing the siren signals, and the charging system
for the four 12 volt batteries.
The lower cabinet (vented NEMA 4 enclosure) houses four maintenance free, lead-acid,
deep-cycle, rechargeable batteries. The lower and upper cabinets are interconnected via
liquid-tight conduit, which is sealed to prevent harmful vapors from entering the control
area. Four batteries are connected in series to provide 48VDC operating power to the siren.
The chargers in the upper cabinet operate on 120VAC to keep the batteries charged. This
arrangement, continues to provide power to the siren, as specified in section 2-1., even in the
event of a power failure.
The 2001DC has ten separately fused circuits to protect the siren controller. Two AC
power fuses (F1 & F2) protect the chargers and optional battery warmers respectively. The
main siren motor is protected by F3, a 200A DC fuse. The rotator motor is fused by an in line
fuse connected to K1. The contactor coils are fused with in line fuses. The charger output
wires are also individually protected with in line fuses (see fig. 3-6).

1-2
1-3. SIGNAL DESCRIPTION.
The Model 2001DC siren controller is capable of producing a Steady signal , Wailing
signal, and a Fast Wail or Fire 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. The Fast
Wail or Fire signal, is often used to summon local fire men. 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.
1-4. OPTIONS.
A. Model 2001TR
This option uses a transformer/rectifier for primary AC operation with battery backup
and allows the siren to operate from a 208/220/240VAC power source without the use of the
batteries. During a power failure, an automatic switch-over to battery operation will occur to
maintain the siren’s normal operation..
B. Model 2001-240
This option allows the Control Unit’s 120VAC battery charger to operate when only a
208/220/240VAC power source is available.
C. Model 2001HTR
In locations where temperatures may drop below freezing for 72 hours or more, the
optional battery warmers are recommended to maintain battery efficiency. On-off control of
the warmers is maintained by a thermostat that senses the inside temperature of the battery
cabinet.
D. Model 2001HR
This option enables the control of both of the siren motors from a single contact closure.
This feature is typically required for telephone line control systems and is only required if an
FC is not purchased. The 2001HR is a holding relay which holds the rotator motor on for 15
seconds after the control contact is released, keeping siren rotation active during Wail
signals.
E. Radio Control.
The siren can be remotely activated by a radio signal when an optional radio
receiver/decoder is incorporated with the Control Unit/Battery Box. Activation by radio
control has the advantage that control lines are not required between the siren control site
and the siren location.
Refer to the FC Users manual (255294) for further information about the radio
controller.

2-1
SECTION II
SPECIFICATIONS
2-1. SYSTEM POWER.
AC Voltage ……………………………………………. 120VAC (+/- 10%), 60Hz or
208/220/
(specify when ordering) 240VAC (+/- 10%), 60Hz
Current Requirements ………………………………… 4A (nom.)
Fusing*(UserProvided) ......................................……10A fast
DC Battery Power
Output Voltage …………………………………… 48VDC
Operating Current from Batteries 100A (nom.)
Standby Current ………………………………….. 0.20A (max)
Continuous Full Output Signaling Time
(from batteries) …………………………………… 15 minutes (min.)
Standby Time (with minimum 5 minute
full signal reserve) ………………………………... Greater than 20 days
2-2. BATTERIES AND CHARGING SYSTEM
Batteries**
Quantity ………………………………………….. 4
Type Deep Discharge, Sealed Lead
Acid,
Maintenance Free,
Rechargeable)
BCI Group Size ………………………………….. 24
Terminal Type ……………………………………. TSM
Load Test Current ………………………………… 200A
Charging System
Charger Output Current ................................…….. 3A nom. - 9A max.)
Charging Voltage............................................……..13.6VDC (each battery)
Operating Temperature .........................................…….-30°C to+60°C***
* Service disconnect fusing is required.
**Siren to be equipped with four Delco Voyager M24MF, batteries which may be
purchased locally.
*
** ** *T Th he e s si ir re en n c ca an n o op pe er ra at te e t th hr ro ou ug gh ho ou ut t t th hi is s t te em mp pe er ra at tu ur re e r ra an ng ge e p pr ro ov vi id de ed d t th he e b ba at tt te er ry y t te em mp pe er ra at tu ur re e i is s
m
ma ai in nt ta ai in ne ed d a at t - -1 18 8° °C C o or r h hi ig gh he er r. .

2-2
Dimensions (HWD)
Control Box ………………………………….. 19.75" x 19.75" x 12.25"
(NEMA 4) 502mm x 502mm x 311mm
Battery Box ………………………………….. 24" x 24" x 11"
(vented NEMA 4) 610mm x 610mm x 280mm
Overall (including mounting hardware) …….. 64" x 24" x 13.81"
1626mm x 610mm x 352mm
Shipping Weight .....................................................… 220 pounds
Weight (approx. incl. batteries) 380 pounds (173kg.)
2-3 AC POWER OPTIONS.
Step-down Battery Charging Transformer (Model 2001-240)
Input Voltage ………………………………… 208/220/240VAC single phase,
60Hz
Output Voltage ................................................ 120VAC
Current Requirements 2A (nom.)
KVA ................................................................. 1.25
Dimensions (HWD) 12.75" x 6.37" x 6.06"
324mm x 162mm x 154mm
AC Primary Operation (Model 2001TR)
Operating Voltage208/220/240VAC (nom.) single
phase
Current Requirements 30A (approx.)
(50A service recommended)
KVA ................................................................. 6.5 primary / 9.2 secondary
Fusing ...........................................................… 35A slow
Weight ............................................................. 150 pounds (68.2kg.)
Dimensions (HWD) .......................................... 22" x 10.25" x 11.75"
560mm x 260mm x 300mm

3-1
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, acting under the direction of the installation crew
safety foreman.
Explosive gases and corrosive materials may be present. To prevent
explosion or severe personal injury, installation technicians MUST be
experienced with the safe installation of lead-acid type batteries.
3-1. CONTROL UNIT/BATTERY BOX LOCATION.
The information in this section provides the user with guidelines necessary for installation
of the Control Unit/Battery Box. Refer to section 5 for the optional equipment installation
instructions.
The Control Unit/Battery Box can be mounted indoors as well as outdoors. In order to avoid
losses in siren power, it is recommended that the siren and Control Unit/Battery Box be installed
within 50 feet wire run of each other. If it is necessary to make a longer cable run, increasing the
wire size to 1 AWG or larger for the siren motor is recommended.
Whether the Control Unit/Battery Box is installed indoors or outdoors, it should be located
out of the reach of vandals. The control and battery enclosures are both supplied with a padlock hasp
for security.
The system is charged from 120VAC which makes power requirements minimal.
The method of activation should first be considered when determining the best location for
the Control Unit/Battery Box. In addition to the push-buttons provided inside the Control Unit
cabinet, land line or radio can be used for remote activation. Control by land line is through
normally-open switches or dry contract closures connected directly to the terminal block in the
Control Unit. Additional information is provided in figure 3-5. and Section IV.
The entire Control Unit/Battery Box is shipped mounted on an aluminum channel with four
mounting holes for 1/2-inch bolts. The total weight of the Control Unit/Battery Box assembly is
approximately 380 pounds (173 kg.) including batteries. Therefore, insure that the mounting surface
and fasteners can safely sustain the weight of the assembly.
NOTE
When installing this product, insure that Local codes and NEC recommendations must be followed.
3-2. CONTROL UNIT/BATTERY BOX INSTALLATION.
A. Pole Mounting.
The Control Unit/Battery Box is attached to a length of 4" channel. There are five
predrilled holes in the channel: one 1-1/4" hole, and four 5/8" holes. The 1-1/4" hole provides a
convenient point for lifting the Control Unit/Battery Box. To attach the Control Unit/Battery Box to
the pole proceed as follows: (Refer to 2001DC manual)
1. If batteries have been previously installed, remove batteries before turning the
Control Unit/Battery Box upright. Use a crane to lift the Control Unit/Battery Box assembly to the
desired height along the pole. It is recommended that the assembly be attached to the pole at a
height that is accessible to service personnel, but discourages vandalism.

3-2
2. Use the crane to hold the Control Unit/Battery Box assembly against the pole.
Using the four 5/8" holes in the channel as a template, locate four hole locations on the pole.
3. Drill a 3/8" hole at each of the four locations. Drill each hole at least 3-1/2"
(90mm.) deep.
4. Attach the Control Unit/Battery Box assembly to the pole, using four user-
supplied 1/2" x 5" lag bolts. Slide a user-supplied 1/2" flat washer onto each bolt before threading the
bolt into the pole.
5. Mount a user-supplied fused disconnect switch on the pole beneath or opposite the
Control Unit/Battery Box assembly in accordance with Local and National Electrical Codes.
B. Flat Surface Mount.
1. The Control Unit/Battery Box is attached to a length of 4" channel. There are five
predrilled holes in the channel: one 1-1/4" hole and four 5/8" holes. The 1-1/4" hole provides a
convenient point for lifting the Control Unit/Battery Box assembly. The four 5/8" holes are for
attaching the assembly to a wall or other substantial vertical surface. If the siren is installed on the
roof of the building, it may be desirable to install the Control Unit/Battery Box inside the building, if
practical.
The total weight of the Control Unit/Battery Box assembly is approximately 380
lb. (173 kg.) including batteries. Therefore, make sure that the mounting surface and mounting
method selected can safely sustain the weight of the assembly. In addition, the mounting method
used must be able to withstand external mechanical stresses that may be applied to the assembly.
2. Locate the Control Unit/Battery Box, when possible, within a 50 ft. wire run of the
siren. Attach the Control Unit/Battery Box assembly to the mounting surface, using the appropriate
user-supplied hardware. The Control Unit/Battery Box can be mounted indoors as well as outdoors.
In order to avoid losses in siren power, it is recommended that the siren and Control Unit/Battery
Box be installed within 50 feet wire run of each other. If it is necessary to make a longer cable run,
increasing the wire size to 1 AWG or larger for the siren motor is recommended.
3. Install a user-supplied fused disconnect switch in accordance with National and
Local Electrical Codes.
3-3. ELECTRICAL CONNECTIONS.
A. General.
WARNING
Install the siren electrical system in compliance with local electrical codes
and NEC recommendations. Federal Signal also recommends that all user-
installed conduit connections enter from bottom of cabinet. Read all warnings
on the batteries before making any connections.
CAUTION
SIREN UNITS AND CONTROL UNITS MUST BE SOLIDLY CONNECTED
TO AN EARTH GROUND. If the siren is installed on a building, ground the
system to a metallic object known to be grounded. For pole mounted
installations, drive a metal rod or bar at least eight feet into the ground, as
close as practical to the base of the pole. FOR MAXIMUM PROTECTION,
USE A SEPARATE, CONTINUOUS 6AWG OR LARGER WIRE FROM THE
SIREN FRAME TO GROUND AND FROM THE CABINET OF EACH
SIREN UNIT TO GROUND.

3-3
B. Siren Connections.
The 2001DC wiring diagram is shown in figures 3-3. All interconnections between the
siren and Control Unit are accomplished using three wires. Two user provided 2 AWG wires provide
operating power to the siren motor. An additional 12 AWG wire provides operating power to the
rotator motor. It is recommended that the interconnecting cable be routed through conduit between
the siren and Control Unit. There is a three position terminal block (shown in figure 3-1) located in
the rotator housing of the siren that accepts stripped wire. The field termination block in the control
box accepts 5/16" ring terminals. The 200A contactors require 1/4" ring terminal connections. These
points provide convenient locations for making field connections.
Connect the siren to the Control Unit as follows:
1. After drilling or punching an appropriate sized hole in the cabinet, install a 1"
user-supplied electrical conduit fitting in the bottom of the Control Unit cabinet, and in the bottom of
the siren rotator housing.
2. Install 1" user-supplied electrical conduit between the conduit fitting in the bottom
of the siren rotator housing and the conduit fitting at the bottom of the Control Unit cabinet.
3. Route the interconnecting wiring (user-supplied) from the siren rotator housing to
the Control Unit cabinet through the conduit.
4. Connect a 12 AWG wire from terminal 1 of the terminal block in the rotator
housing to the control relay K1-2 (see figure 3-3 view A-A).
5. Connect a 2 AWG wire from terminal 2 of the terminal block in the rotator
housing terminal to the control relay K2-2.
6. Connect a 2 AWG wire from terminal 3 of the terminal block in the rotator
housing to TB2-1 in the control box.
7. Tighten all connections securely to provide good electrical connections.
Figure 3-1 Terminal Block in Rotator Housing.
C. Control Unit/Battery Box—Power

3-4
Connections.
1. As shipped from the factory, the battery charger in the Control Unit is configured
for 120VAC operation (see section 5-2 for operation at 208/220/240 VAC).
2. Route 1" conduit (steel preferred) between a user-supplied fused disconnect
switch and the user-supplied conduit fitting in the bottom of the Control Unit cabinet.
3. Route two user-supplied wires through the conduit that was just installed between
the Control Unit and the fused disconnect switch. Use 14 AWG wire or larger. Connect the power
wires to TB3 in the Control Unit as shown in figure 3-2.
4. Follow the instructions included with the lightning protector (supplied) and install
in the service disconnect.
5. Open the door on the Battery Box enclosure. Read the warning labels posted
inside the cabinet door.
6. Install four DELCO M24MF batteries in the Battery Box taking caution not to
touch the battery terminals against the cabinet. It may be necessary to temporarily relocate the
wiring in the enclosure before installing the batteries. The polarity of the battery terminals is clearly
marked on the battery case. See figure 3-4 for correct positioning and wiring.
7. There are several wires entering the battery cabinet: a red 4AWG, a black 4AWG,
an AC power cord, and a multiple conductor cable. The red and black wires provide 48VDC operating
power to the siren. The AC power cord is used with the optional battery warmers. The multiple
conductor cable provides the charge current for the batteries. Several white wires with lugs on each
end are also packaged with the batteries. These wires are used to connect the batteries in series. See
figure 3-4 for proper wiring.
8. Apply user supplied grease, or other oxide inhibiting compound to the battery
Terminals
D. Control Unit/Battery Box—Control
Connections.
1. All Control Unit interconnecting wiring can be accessed by opening the Control
Unit’s front cover. The DFC is mounted under the front cover. Refer to the installation instructions
provided with the FC before making any connections.
2. If the internal FC timer is to be controlled remotely via land lines or external radio
control equipment, then a normally-open, dry contact closure is required for each siren function to
be controlled.
Activation is accomplished by a momentary contact closure between the
applicable input and common (ground). The output signal can be cancelled by a momentary contact
closure between the cancel position and common (ground).
3. When land lines are longer than 50 feet (15.25m.), install a SPST telephone relay,
such as the Federal Model TRC1020B, at the siren site. Connect the relay coil to a 48VDC power
supply (customer supplied) with a switch in series as shown in figure 3-5. The power supply and
switch can be located anywhere within the created loop.

3-7
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 and minimize exposure time when performing tests or
maintenance on the siren.
1. Make sure all connections in the Control Unit/Battery Box are correct and properly
tightened.
2. Make sure no one is within 300' of the siren if they are above ground level. Sound levels
on the ground are not excessive when the siren is mounted at least 40' above the ground.
3. Activate each siren function from all control points. Check for proper rotation and
sound of siren signals. After confirming that the installation is complete and it has been established
that the siren is operating properly, it is recommended that all control devices be padlocked to
discourage tampering and vandalism.

3-8

4-1
SECTION IV
SERVICE AND MAINTENANCE
4-1.GENERAL.
WARNING
Service or maintenance 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, and produces high output sound levels which could cause
severe personal injury, electrocution, or death.
Before servicing or maintaining, ensure that remote activation can not occur and
disconnect power to the siren and its controls.
The Model 2001DC Siren is designed to require a minimum of maintenance. In addition, historical experience
has shown that all Federal sirens are highly reliable devices. However, if a siren failure does occur, Federal
Signal will provide technical assistance with problems that cannot be handled satisfactorily and promptly
locally. If assistance is desired, contact:
CWS Service Department
Federal Signal Corporation
2645 Federal Signal Drive
University Park, Illinois 60466
1 [phone].
Refer to Section 4-3.
4-2. PREVENTIVE MAINTENANCE.
Test the 2001DC 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 instills
public confidence in the reliability of the warning system, and provides additional confirmation
of it being prepared for operation in an emergency.
In order to minimize the possibility of siren failure, annual inspection and maintenance is
desirable. Following is a recommended procedure for inspection.
WARNING
The output level of a Model 2001SRN is capable of causing permanent hearing
damage. Therefore, ALWAYS wear suitable 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, 4AWG red wire in the Battery Box before inspecting or maintaining the siren.
1. Inspect battery connections and clean and apply a coating of protective grease if necessary.
2. Check individual battery voltages. Voltages should be approximately 13.6 VDC each when fully charged.

4-2
3. Perform a load test on the batteries in accordance with the battery manufacture’s specifications if their
operation is doubtful.
4. Check all connections and fasteners, tighten if necessary.
5. 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.
6. Activate each siren function from all control points. Check for proper rotation and sound of siren signals.
After confirming that the installation is complete and it has been established that the siren is operating
properly, it is recommended that all control devices be padlocked to discourage tampering and vandalism.
4-3.PROBLEM CHECKLIST
DANGER
Electrocution or severe personal injury could occur when working on this
equipment. Service should only be performed by service technicians familiar
with 240VAC power and only after reading this manual.
The following checklist should be completed if the unit fails to operate properly. A VOM is required for some
measurements.
1. Are there any visible signs of damage?
2. Does the unit operate from the push-buttons?
3. Do K1 and K2 operate?
4. Is F3 open?
5. Are the main AC breakers tripped?
6. What is voltage supplied to TB3?
7. What are voltage readings of the individual batteries?
If assistance is required after completing the checklist, contact:
FWS Service Department
Federal Signal Corporation
2645 Federal Signal Drive
University Park, Il. 60466
1-800-524-3021
In Illinois: 708-534-3400
Fax: [phone]