Page 1
MODEL PA4000
ELECTRONIC SIRENS
INSTALLATION, OPERATION, AND SERVICE INSTRUCTIONS
255292 D0 0519
Page 2
Limited Warranty
This product is subject to and covered by a limited warranty,
a copy of which can be found at www.fedsig.com/SSG-Warranty. A copy of this limited warranty can also be obtained by
written request to Federal Signal Corporation, 2645 Federal
Signal Drive, University Park, IL 60484, email to info@fedsig.
com or call +1 708-534-3400.
This limited warranty is in lieu of all other warranties, express
or implied, contractual or statutory, including, but not limited
to the warranty of merchantability, warranty of tness for a
particular purpose and any warranty against failure of its essential purpose.
2645 Federal Signal Drive
University Park, Illinois 60484
www.fedsig.com
Customer Support
Police/Fire-EMS: 800-264-3578 • +1 708 534-3400
Work Truck: 800-824-0254 • +1 708 534-3400
Technical Support 800-433-9132 • +1 708 534-3400
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Contents
SECTION I GENERAL DESCRIPTION.............................................................................................................................................. 4
SECTION II SPECIFICATIONS .........................................................................................................................................................5
SECTION III INSTALLATION ...........................................................................................................................................................6
3-1. UNPACKING ..................................................................................................................................................................................................................... 8
3-2. AMPLIFIER INSTALLATION .......................................................................................................................................................................................... 8
3-3. CONTROL HEAD INSTALLATION .............................................................................................................................................................................. 8
3-4. ELECTRICAL INSTALLATION ....................................................................................................................................................................................... 9
3-5. INSPECTION AND FINAL INSTALLATION .............................................................................................................................................................12
SECTION IV OPERATION .............................................................................................................................................................13
4-1. GENERAL ........................................................................................................................................................................................................................ 15
4-2. SELECTOR SWITCH......................................................................................................................................................................................................15
4-3. HORN RING SWITCH ...................................................................................................................................................................................................15
4-4. AIR HORN/MANUAL SIREN SWITCH ...................................................................................................................................................................... 15
4-5. TAP II FUNCTIONS ....................................................................................................................................................................................................... 15
4-6. PRESS-AND-HOLD FUNCTION ................................................................................................................................................................................ 15
4-7. AUX IN FUNCTION ......................................................................................................................................................................................................16
4-8. AUX OUT FUNCTION ..................................................................................................................................................................................................16
4-9. SPEAKER DIAGNOSTIC TEST ....................................................................................................................................................................................16
4-10. PARK-SIREN DEACTIVATOR ....................................................................................................................................................................................16
4-11. PA AND RADIO GAIN ADJUSTMENT................................................................................................................................................................... 16
SECTION V SERVICE AND MAINTENANCE .................................................................................................................................17
5-1. GENERAL ........................................................................................................................................................................................................................ 17
5-2. SIREN ...............................................................................................................................................................................................................................18
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SECTION I
GENERAL DESCRIPTION
Figure 1-1. Model PA4000 Electronic Siren.
The Federal Model PA4000 is a precision built,
efcient and economical full-featured electronic
siren of advanced design. It provides wail, yelp and
priority siren tones, as well as the Tap II feature,
public address (PA), radio rebroadcast and an air
horn sound. The PA4000NY-HiLo has a HI-LO
tone replacing the priority tone.
The siren may be installed in negative ground
vehicles with 12-volt electrical systems. It is
protected against failure modes (including reversed
polarity) by a fuse that is replaceable without tools.
No components protrude from the bottom of the
siren to interfere with mounting arrangements.
The Tap II feature allows the driver to change
the siren sound via the vehicle’s horn ring or any
remotely mounted switch.
A horn ring switch allows the driver to determine
the function of the horn ring. LEDs indicate when
the vehicle horn is disabled and the horn ring is
controlling either Tap II or the air horn tone.
Other special features of the Model PA4000
include:
• High degree of reliability is achieved through
the use of a CMOS microprocessor and silicon
output transistors.
The siren is made up of an Amplier and a Control
Head. The Amplier is suitable for mounting in
a dry, adequately ventilated location, while the
Control Head is designed for ush mounting in the
vehicle interior. Communication between the two
units is via an RJ45 telephone connector.
A noise-cancelling microphone is wired-in to
prevent loss or theft. It provides high quality
voice reproduction without feedback (squeal). The
microphone push-to-talk switch overrides any siren
signal for instant PA use. PA and radio volume are
preset at the factory for maximum gain.
The Model PA4000 is designed to drive one or two
100 watt speakers. Using two 100-watt speakers
will provide maximum trafc clearing power.
• Control panel is illuminated with non-glare
lighting.
• Newly designed printed circuit board
provides improved performance and durability
under a wide range of environmental conditions.
• AUX/OUT can drive an external relay for
controlling other devices, such as warning
lights.
• AUX/IN input can activate wail when the siren
selector is in the manual position.
• Park-Siren Deactivator can deactivate siren
tones when the vehicle is shifted into PARK.
• A diagnostic capability for speaker testing
uses two LEDs for visual indication and four
test tones for audible indication.
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SECTION II
SPECIFICATIONS
Input Voltage 11 Vdc to 16 Vdc
Polarity Negative ground electrical systems only
Standby Current 250mA (backlighting extinguished)
Operating Current (Control Head & Ampl.) 13A ±1A (at 13.6V with 5.5-ohm load)
Frequency Range 725 to 1600 Hz (nominal)
Cycle Rate Wail- 14 cycles/min.
Yelp- 180 cycles/min.
Voltage Output (approx.) 62V peak-to-peak
Audio Frequency Range 300 to 3KHz
Harmonic Audio Distortion 10% max. all power levels from 1/2 to 50 watts
(frequency response ±3dB)
Operating Temperature Range -30°C to +65°C
Dimensions (HWD)
Control Head 2.9" x 6.3" x 1.5"
Amplier Module 3.6" x 6.9" x 4.8"
Shipping Weight (approx.) 7 pounds
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SECTION III
INSTALLATION
SAFETY MESSAGE TO INSTALLERS
ELECTRONIC SIRENS
People’s lives depend on your proper installation
and servicing of Federal Signal products. It is
important to read and follow all instructions
shipped with this product. In addition, listed below
are some other important safety instructions and
precautions you should follow:
Before Installation
Qualications
• To properly install an electronic siren, you
must have a good understanding of automotive
electrical procedures and systems, along with
prociency in the installation and service of
safety warning equipment. Always refer to the
vehicle’s service manuals when performing
equipment installations on a vehicle.
Sound Hazards
• Your hearing and the hearing of others, in or
close to your emergency vehicle, could be
damaged by loud sounds. This can occur from
short exposures to very loud sounds, or from
longer exposures to moderately loud sounds.
For hearing conservation guidance, refer to
federal, state, or local recommendations.
OSHA Standard 1910.95 offers guidance on
“Permissible Noise Exposure.”
• All effective sirens and horns produce loud
sounds (120 dB) that may cause permanent
hearing loss. Always minimize your exposure
to siren sound and wear hearing protection. Do
not sound the siren indoors or in enclosed areas
where you and others will be exposed to the
sound.
• Federal Signal siren amplier/relay modules
and speakers are designed to work together as
a system. Combining a siren and speaker from
different manufacturers may reduce the warning
effectiveness of the siren system and may
OF
damage the components. You should verify or
test your combination to make sure the system
works together properly and meets federal, state
and local standards or guidelines.
During Installation
• Do NOT get metal shavings inside the product.
Metal shavings in the product can cause the
system to fail. If drilling must be done near the
unit, place an ESD approved cover over the unit
to prevent metal shavings from entering the
unit. Inspect the unit after mounting to be sure
there are no shavings present in or near the unit.
• Do NOT connect this system to the vehicle
battery until ALL other electrical connections
are made, mounting of all components is
complete, and you have veried that no shorts
exist. If wiring is shorted to vehicle frame, high
current conductors can cause hazardous sparks
resulting in electrical res or ying molten
metal.
• Be sure the siren amplier/relay module and
speaker(s) in your installation have compatible
wattage ratings.
• In order for the electronic siren to function
properly, the ground connection must be made
to the NEGATIVE battery terminal.
• Sound output will be severely reduced if any
objects are in front of the speaker. If maximum
sound output is required for your application,
you should ensure that the front of the speaker
is clear of any obstructions.
• Install the speaker(s) as far forward on the
vehicle as possible, in a location which
provides maximum signaling effectiveness and
minimizes the sound reaching the vehicle’s
occupants. Refer to the National Institute of
Justice guide 500-00 for further information.
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• Mounting the speakers behind the grille
will reduce the sound output and warning
effectiveness of the siren system. Before
mounting speakers behind the grille, make sure
the vehicle operators are trained and understand
that this type of installation is less effective for
warning others.
• Sound propagation and warning effectiveness
will be severely reduced if the speaker is not
facing forward. Carefully follow the installation
instructions and always install the speaker with
the projector facing forward.
• Do NOT install the speaker(s) or route the
speaker wires where they may interfere with the
operation of airbag sensors.
• Installation of two speakers requires wiring
speakers in phase.
• Never attempt to install aftermarket equipment,
which connects to the vehicle wiring, without
reviewing a vehicle wiring diagram available
from the vehicle manufacturer. Ensure that your
installation will not affect vehicle operation
and safety functions or circuits. Always check
vehicle for proper operation after installation.
After Installation
• After installation, test the siren and light system
to ensure that it is operating properly.
• Test all vehicle functions, including horn
operation, vehicle safety functions and vehicle
light systems, to ensure proper operation.
Ensure that installation has not affected vehicle
operation or changed any vehicle safety
function or circuit.
• After testing is complete, provide a copy of
these instructions to the instructional staff and
all operating personnel.
• File these instructions in a safe place and refer
to them when maintaining or reinstalling the
product.
Failure to follow all safety precautions and
instructions may result in property damage, serious
injury, or death.
RETAIN AND REFER TO THESE
MESSAGES.
• Do NOT install equipment or route wiring or
cord in the deployment path of an airbag.
• If a vehicle seat is temporarily removed, verify
with the vehicle manufacturer if the seat needs
to be recalibrated for proper airbag deployment.
• Locate the control head so the vehicle, controls,
and microphone can be operated safely.
• When drilling into a vehicle structure, be
sure that both sides of the surface are clear of
anything that could be damaged. All drilled
holes should be deburred and all sharp edges
should be smoothed. All wires going through
drilled holes should be protected by a grommet
or convolute/split-loom tubing. Additionally,
all exterior drilled holes must be sealed with
Motorcraft seam sealer T-A-2-B or equivalent
to prevent the potential exposure to carbon
monoxide or other potentially harmful fumes.
Failure to observe this warning could cause
serious injury or death.
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3-1. UNPACKING
After unpacking the Model PA4000, examine it
for damage that may have occurred in transit. If
the equipment has been damaged, le a claim
immediately with the carrier stating the extent
of the damage. Carefully check all envelopes,
shipping labels and tags before removing or
destroying them.
3-2. AMPLIFIER INSTALLATION
thread-forming screws are to be used, drill
3/16" holes at the drill position marks.
Drill 9/32" holes at the position marks if
the 1/4-20 cap screws, lockwashers and
nuts will be used.
d. Secure the Amplier to the mounting
surface using the mounting hardware,
including lockwashers.
3-3. CONTROL HEAD INSTALLATION
The Amplier is NOT waterproof. It must be
mounted in a location which is sheltered from
falling rain, snow, standing water, etc. It must
also be installed in an adequately ventilated area.
Never install near heater ducts. Do not mount the
Amplier under the vehicle’s hood.
1. Select a suitable mounting location for the
Amplier. Some possible mounting locations
are: in the equipment cabinet, under the front
seat, or in the trunk (under the rear deck,
near the rear seat speakers, if vehicle is so
equipped). Keep in mind that the control cable
is 15 feet long.
2. Using the mounting holes on the amplier as a
template, scribe four drill position marks at the
mounting location.
DRILLING PRECAUTIONS: When drilling into
a vehicle structure, be sure that both sides of
the surface are clear of anything that could be
damaged. All drilled holes should be deburred and
all sharp edges should be smoothed. All wires
going through drilled holes should be protected
by a grommet or convolute/split-loom tubing.
Additionally, all exterior drilled holes must be
sealed with Motorcraft seam sealer T-A-2-B or
equivalent to prevent the potential exposureto
carbon monoxide or other potentially harmful
fumes. Failure to observe this warning could cause
serious injury or death.
c. The mounting hardware supplied in the
siren accessory kit provides the siren
user with a choice of mounting hardware;
thread-forming screws with lockwashers
or 1/4-20 cap screws with lockwashers and
hex nuts. Consequently, the holes drilled in
the mounting surface must be appropriate
for the mounting screws selected. If the
When installing equipment inside air bag equipped
vehicles, the installer MUST ensure that the
equipment is installed ONLY in areas recommended
by the vehicle manufacturer.
Failure to observe this warning will reduce the
effectiveness of the air bag, damage the air bag, or
potentially damage or dislodge the equipment,
causing serious injury or death to you or others.
The Control Head is designed to be ush mounted
in any relatively at surface. To install, proceed as
follows:
1. Select a location for the Control Head on the
mounting surface that does not impair the
drivers’ ability to safely drive the vehicle as he
operates the siren. The selected location should
afford good visibility and free accessibility to
the Control Head controls.
2. Place the mounting template, supplied in the
accessory kit, over the selected mounting
location. Scribe a mark for each of the four
mounting holes. Also, scribe a cut mark along
the heavy dark line on the template.
DRILLING PRECAUTIONS: When drilling into
a vehicle structure, be sure that both sides of
the surface are clear of anything that could be
damaged. All drilled holes should be deburred and
all sharp edges should be smoothed. All wires
going through drilled holes should be protected
by a grommet or convolute/split-loom tubing.
Additionally, all exterior drilled holes must be
sealed with Motorcraft seam sealer T-A-2-B or
equivalent to prevent the potential exposureto
carbon monoxide or other potentially harmful
fumes. Failure to observe this warning could cause
serious injury or death.
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3. Drill four 0.120 diameter (#31 drill) mounting
holes at the marks scribed in step B.
4. Using a keyhole saw or sabre saw, saw into the
mounting surface at the cutmark scribed in step
B.
c. If routing the cable requires drilling a hole
in sheet metal or other material, drill a 5/8"
hole in the material. Install a 5/8" grommet
(not supplied) or similar protective device
in the hole, to protect the cable from
damage which sharp edges could cause.
NOTE: Before completing the Control Head
installa tion, perform the procedures in paragraph
3-4, Electrical Installation.
5. With all wiring connections complete, place
the Control Head in position and secure to
mounting surface with four (4) #6B Phillips
head thread-forming screws (supplied).
3-4. ELECTRICAL INSTALLATION
When installing equipment inside air bag
equipped vehicles, the installer MUST ensure that
the equipment is installed ONLY in areas
recommended by the vehicle manufacturer.
Failure to observe this warning will reduce the
effectiveness of the air bag, damage the air bag,
or potentially damage or dislodge the equipment,
causing serious injury or death to you or others.
A. Control Cable
The control cable is designed to be installed
between the Amplier and the Control Head. It
consists of an 8-conductor cable terminated on both
ends with RJ45 connectors. To install the control
cable, proceed as follows:
d. Install the other end of the control cable to
the mating connector on the Amplier.
B. Siren Connections
The unit is supplied with an eleven-position
connector to perform the electrical installation.
User-supplied 14-gauge red and black wires
are required for the positive (+) and ground (-)
connections. User supplied 18-gauge wires are
required for the speaker, radio, horn switch, park
switch, backlighting, and case ground connections.
To install a wire in the eleven-position connector,
strip 1/4" of insulation from the end of the wire.
Then insert the wire into the connector and tighten
the screw at the appropriate connector position.
1. Speaker
The unit is designed to operate with one 11ohm impedance speaker (100W) or two 11-ohm
impedance speakers (100W).
When using one 100W speaker, use 18 gauge wire
and connect the speaker leads to positions 1 and 2
of the eleven-position connector as shown in gure
3-1.
1. Install the one end of the control cable to the
mating connector on the Control Head.
2. Route the control cable toward the Amplier.
DRILLING PRECAUTIONS: When drilling into
a vehicle structure, be sure that both sides of
the surface are clear of anything that could be
damaged. All drilled holes should be deburred and
all sharp edges should be smoothed. All wires
going through drilled holes should be protected
by a grommet or convolute/split-loom tubing.
Additionally, all exterior drilled holes must be
sealed with Motorcraft seam sealer T-A-2-B or
equivalent to prevent the potential exposureto
carbon monoxide or other potentially harmful
fumes. Failure to observe this warning could cause
serious injury or death.
Improper diagnostic test indications will result
if speakers are connected in parallel. DO NOT
connect speakers in parallel.
When using two 100W speakers, they must be
connected in phase. See gure 3-1. On FEDERAL
speakers, this can be accomplished (using 18 gauge
wire) by connecting the two speaker leads marked
“2” to position 1 of the eleven-position connector.
Connect one of the speaker leads marked “1”
to position 2 of the eleven-position connector.
Connect the other speaker lead marked “1” to
position 3 of the eleven position connector.
2. Radio
See gure 3-1. To allow incoming radio messages
to be rebroadcast over the outside speakers,
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290A2697B
CONTROL CABLE
DASH LIGHT OR IGNITION SWITCH
1
SPEAKER
2
2
SPEAKER
1
2 WAY
RADIO
SPEAKER
INPUT
NO. 1
NO. 2
UNIVERSITY PARK, IL. U.S.A.
SPKR 1
SPKR COM
2345678910 111
AUX IN
SPKR 2
RADIO
200mA
PARK
MAX.
CHASSIS
AUX OUT
RADIO
IGN
PA
FUSE
20
PA4000
BATTERY
NEG
POS
CONTROL
11 PIN
CONNECTOR
*
BATTERY
POS. AND NEG.
14 GA.
**
18 GA.
(10)
1/4"
WIRE
STRIPPING
TYPICAL
*
+
12VDC
OR
GROUND
PUSH ON
PUSH OFF
+
12VDC
OR
GROUND
+
12VDC
IGNITION SWITCH
SW
MOMENTARY SW.
VEHICLE SUPPLIED
PARK/NEUTRAL
LAMP HORN
RELAY
Figure 3-1. PA4000 Wiring.
connect user-supplied 18 gauge wires to positions 4
and 5 of the eleven-position connector. Connect the
other end of the 18 gauge wires across the two-way
radio’s speaker.
**
+
BATTERY
COMMON
GROUND
HORN RING
*
*
-
CUT WIRE
FUSIBLE
LINK
WHT/YEL
FEMALE TERMINALS
CONTROL HEAD
4 3 2 1
BLK
RED
WHT
1/4" INSULATED
END VIEW OF
CONTROL HEAD
SHOWN HERE
position connector. Connect the other end of the
wire to a vehicle circuit that is, depending on the
vehicle, grounded or connected to battery positive
(+) when the vehicle is shifted into PARK.
TWO (2)
3. Aux In.
This input will activate the wail siren tone when
the siren selector is in manual.
To use this feature, connect a user-supplied 18
gauge wire to position 6 of the eleven-position
connector as shown in gure 3-1.
4. Park-Siren Deactivator
IMPORTANT: It is the installer’s responsibility
to determine an appropriate location in the vehicle
circuitry to connect this wire.
This feature automatically deactivates siren tones
when the vehicle is shifted into PARK.
See gure 3-1. To use this feature, connect a usersupplied 18 gauge wire to position 7 of the eleven-
5. Aux Out
NOTE: This output is activated any time the siren
is operating in Wail, Yelp, or Priority (HI-LO)
mode.
This feature can be used to activate an external
relay (200mA maximum) for controlling warning
lights.
To use this feature, connect a user-supplied 18
gauge wire to position 8 of the eleven-position
connector as shown in gure 3-1.
6. Ground
Connect a user-supplied 18 gauge black wire
to position 9 of the eleven-position connector.
Connect the other end of the wire to the negative
battery terminal.
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7. Ignition
Connect a user-supplied 18-gauge wire to position
11 of the eleven-position connector. Connect the
other end of the wire to a vehicle circuit that is
powered when the ignition switch is “on.”
Control Head panel lights whenever the
headlights are “on” or the vehicle ignition
key switch is in the “on” position.
b. Connect the black wire to the negative
battery terminal.
C. Horn Ring Cable
The horn ring cable assembly, located in the
accessory kit, is a 4-wire cable terminating in an
orange edge connector. This connector should
be installed on the mating 4-pin connector (J2)
located on the Control Head PC board, and should
be oriented so that the white wire is closest to
the RJ45 phone jack. The following paragraphs
describe the installation of the leads at the other
end of the horn ring cable.
1. Horn Ring (gure 3-1)
The horn ring transfer circuit of the siren is capable
of switching a maximum of 10-amperes.
NOTE: An external relay is not required for horn
ring operation.
If the horn ring will not be used to control siren
operation, fold back and insulate the WHT and
WHT/YEL wires in the power cable and disregard
the procedure in this paragraph. However, in order
to utilize the Tap II and horn ring controlled Air
Horn features of the siren, the following procedure
must be performed.
a. Locate the wire that connects the vehicle
horn ring switch to the horn or horn relay.
Cut this wire.
b. Splice the white/yellow wire in the horn
ring cable to the horn ring side of the wire
that was cut in step a. Insulate the splice
with a wire nut (supplied).
c. Splice the white wire in the horn ring cable
to the horn side of the cut wire. Insulate
the splice with a wire nut (supplied).
2. Lamp
a. Connect the red wire to the dash lights
circuit or to a vehicle circuit that is
powered when the ignition switch is “on”.
This connection will supply power to the
The Control Head can now be secured to the
vehicle dashboard.
D. Amplier Power Connections
When making the power connections to the
PA4000, each wire must be terminated with an
appropriate 1/4" female, insulated, quick-connect
terminal. Complete the wiring to the unit as
follows:
1. Crimp the 1/4" female terminals on one end
of user-supplied 14 gauge red and black wires.
See gure 3-1. Connect the red wire to the
“POS” Amplier connection. Connect the black
wire to the “NEG” Amplier connection.
DRILLING PRECAUTIONS: When drilling into
a vehicle structure, be sure that both sides of
the surface are clear of anything that could be
damaged. All drilled holes should be deburred and
all sharp edges should be smoothed. All wires
going through drilled holes should be protected
by a grommet or convolute/split-loom tubing.
Additionally, all exterior drilled holes must be
sealed with Motorcraft seam sealer T-A-2-B or
equivalent to prevent the potential exposureto
carbon monoxide or other potentially harmful
fumes. Failure to observe this warning could cause
serious injury or death.
2. If the Amplier is installed in the vehicle
passenger compartment, it will be necessary to
drill a 5/8" hole in the vehicle rewall for the
power and ground leads.
If necessary, drill a 5/8" hole in the vehicle rewall.
Install a user-supplied 5/8" grommet, or similar
device or material, to protect the wiring and
cabling against damage from rough edges.
3. Route the leads from the Amplier to an area
near the battery. (Do not connect to battery at
this time.) If necessary, pass the lead through
the 5/8" hole that was drilled in step 2.
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Page 12
4. Connect the black wire to the negative battery
terminal. A secure mechanical and electrical
connection is required.
3-5. INSPECTION AND FINAL INSTALLATION
1. Plug the eleven-position connector into the
mating connector on the unit, and apply
pressure until it locks into place.
HIGH CURRENT ARCING: Do not connect this
system to the vehicle battery until ALL other
electrical connections are made and you have
veried that no shorts exist. High current
conductors can cause hazardous sparks or burning
wire, resulting in electrical res.
2. Connect the red (+) wire to the positive
(+) terminal of the power source. A secure
mechanical and electrical connection is
required.
3-6. TESTING AFTER INSTALLATION.
All effective sirens and horns produce loud sounds
(120 dB) that may cause permanent hearing loss.
Always minimize your exposure to siren sound and
wear hearing protection. Do not sound the siren
indoors or in enclosed areas where you and others
will be exposed to the sound.
After installation, test the electronic siren,
including horn operation, to ensure that it is
operating properly.
After testing is complete, provide a copy of this
manual to all operating personnel.
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Page 13
SECTION IV
OPERATION
SAFETY MESSAGE TO OPERATORS OF
FEDERAL SIGNAL ELECTRONIC SIRENS
AND LIGHT/SOUND SYSTEMS
People’s lives depend on your proper installation
and servicing of Federal Signal products. It is
important to read and follow all instructions
shipped with this product. In addition, listed below
are some other important safety instructions and
precautions you should follow:
Before Installation
Qualications
• To properly install an electronic siren, you
must have a good understanding of automotive
electrical procedures and systems, along with
prociency in the installation and service of
safety warning equipment. Always refer to the
vehicle’s service manuals when performing
equipment installations on a vehicle.
Sound Hazards
• Your hearing and the hearing of others, in or
close to your emergency vehicle, could be
damaged by loud sounds. This can occur from
short exposures to very loud sounds, or from
longer exposures to moderately loud sounds.
For hearing conservation guidance, refer to
federal, state, or local recommendations.
OSHA Standard 1910.95 offers guidance on
“Permissible Noise Exposure.”
• All effective sirens and horns produce loud
sounds (120 dB) that may cause permanent
hearing loss. Always minimize your exposure
to siren sound and wear hearing protection. Do
not sound the siren indoors or in enclosed areas
where you and others will be exposed to the
sound.
• Federal Signal siren amplier/relay modules
and speakers are designed to work together as
a system. Combining a siren and speaker from
different manufacturers may reduce the warning
effectiveness of the siren system and may
damage the components. You should verify or
test your combination to make sure the system
works together properly and meets federal, state
and local standards or guidelines.
During Installation
• Do NOT get metal shavings inside the product.
Metal shavings in the product can cause the
system to fail. If drilling must be done near the
unit, place an ESD approved cover over the unit
to prevent metal shavings from entering the
unit. Inspect the unit after mounting to be sure
there are no shavings present in or near the unit.
• Do NOT connect this system to the vehicle
battery until ALL other electrical connections
are made, mounting of all components is
complete, and you have veried that no shorts
exist. If wiring is shorted to vehicle frame, high
current conductors can cause hazardous sparks
resulting in electrical res or ying molten
metal.
• Be sure the siren amplier/relay module and
speaker(s) in your installation have compatible
wattage ratings.
• In order for the electronic siren to function
properly, the ground connection must be made
to the NEGATIVE battery terminal.
• Sound output will be severely reduced if any
objects are in front of the speaker. If maximum
sound output is required for your application,
you should ensure that the front of the speaker
is clear of any obstructions.
• Install the speaker(s) as far forward on the
vehicle as possible, in a location which
provides maximum signaling effectiveness and
minimizes the sound reaching the vehicle’s
occupants. Refer to the National Institute of
Justice guide 500-00 for further information.
13
Page 14
• Mounting the speakers behind the grille
will reduce the sound output and warning
effectiveness of the siren system. Before
mounting speakers behind the grille, make sure
the vehicle operators are trained and understand
that this type of installation is less effective for
warning others.
• Sound propagation and warning effectiveness
will be severely reduced if the speaker is not
facing forward. Carefully follow the installation
instructions and always install the speaker with
the projector facing forward.
• Do NOT install the speaker(s) or route the
speaker wires where they may interfere with the
operation of airbag sensors.
• Installation of two speakers requires wiring
speakers in phase.
• Never attempt to install aftermarket equipment,
which connects to the vehicle wiring, without
reviewing a vehicle wiring diagram available
from the vehicle manufacturer. Ensure that your
installation will not affect vehicle operation
and safety functions or circuits. Always check
vehicle for proper operation after installation.
After Installation
• After installation, test the siren and light
system to ensure that it is operating properly.
• Test all vehicle functions, including horn
operation, vehicle safety functions and vehicle
light systems, to ensure proper operation.
Ensure that installation has not affected vehicle
operation or changed any vehicle safety
function or circuit.
• After testing is complete, provide a copy of
these instructions to the instructional staff and
all operating personnel.
• File these instructions in a safe place and refer
to them when maintaining or reinstalling the
product.
Failure to follow all safety precautions and
instructions may result in property damage,
serious injury, or death.
RETAIN AND REFER TO THESE
MESSAGES.
• Do NOT install equipment or route wiring or
cord in the deployment path of an airbag.
• If a vehicle seat is temporarily removed, verify
with the vehicle manufacturer if the seat needs
to be recalibrated for proper airbag deployment.
• Locate the control head so the vehicle, controls,
and microphone can be operated safely.
• When drilling into a vehicle structure, be
sure that both sides of the surface are clear of
anything that could be damaged. All drilled
holes should be deburred and all sharp edges
should be smoothed. All wires going through
drilled holes should be protected by a grommet
or convolute/split-loom tubing. Additionally,
all exterior drilled holes must be sealed with
Motorcraft seam sealer T-A-2-B or equivalent
to prevent the potential exposure to carbon
monoxide or other potentially harmful fumes.
Failure to observe this warning could cause
serious injury or death.
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Page 15
4-1. GENERAL
290A2925
All controls utilized during normal operation of
the Model PA4000 are located on the Control Head
(see gure 4-1).
4-2. SELECTOR SWITCH
The Selector switch is a ve-position rotary switch
used to select the mode of operation. The following
are positions on the Selector switch.
A. RADIO
In this position, incoming radio messages are
amplied by the siren and rebroadcast over the
outside speaker.
B. MAN
In this position, it is possible to operate the siren
by activating the AIR HORN/MANUAL paddle
switch. The siren can also be activated by means
of an auxiliary switch, such as the horn ring button
(refer to paragraph 4-6).
C. WAIL
In this position, the siren produces a continuous
“wailing” sound , up and down in frequency.
D. YELP
In this position, a continuous rapid “warbled” tone
is generated.
E. PRIORITY (HI-LO)
In this position, a continuous extremely rapid
“warbled” tone or an alternating HI-LO tone is
generated.
4-3. HORN RING SWITCH
The horn ring switch determines the function of the
vehicle horn ring.
1. In the center position, the vehicle’s horn will
sound. Both red LEDs are extinguished.
2. In the left (SIREN) position, the red LED on
the left is illuminated. Pressing the vehicle’s
horn ring activates the Tap II function and
changes the audible siren sound. The vehicle
horn will not sound.
3. In the right (A/H) position, the red LED on the
right is illuminated. Pressing the vehicle’s horn
ring will sound the air horn tone. The vehicle
horn will not sound.
4-4. AIR HORN/MANUAL SIREN SWITCH
The AIR HORN/MANUAL switch activates the
electronic air horn sound (up) in any selected
position, except RADIO, and the peak-and-hold
sound (down) in the MAN position.
4-5. TAP II FUNCTIONS
Tap II allows the driver to change the audible siren
sound via the vehicle’s horn ring. This feature is
especially effective for clearing trafc. The chart
below demonstrates how the horn ring can be used
to change the siren sound.
TAP II FUNCTIONS
Selector First Horn Second Horn
Switch Ring Tap Ring Tap
Position Produces Produces
NOTE: Pressing the microphone push-to-talk
switch will override any function and provide
instant public address operation.
FEDERAL SIGNAL CORPORATION
AIR HORN
MANUAL
HORN RING
A/HSIREN
Figure 4-1. PA4000 Control Head.
MAN
RAD
WAIL
YELP
PRTY
SPKR TEST
LR
Wail Yelp Wail
Yelp Priority (HI-LO) Yelp
4-6. PRESS-AND-HOLD FUNCTION
NOTE: For the press and hold functions to operate
with the horn ring, the Control Head horn ring
switch must be in the SIREN position.
Additional alternate sounds can be activated when
the Selector switch is set to MAN or PRTY. While
depressing and holding the horn ring and the
Selector switch set to MAN, peak-and-hold siren
will sound. In the PRTY position, the air horn will
sound. Releasing the horn ring will cause the siren
to revert back to the original function.
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The TAP II functions can also be activated by
depressing the MANUAL SIREN switch, as shown
below:
1st Tap 2nd Tap
Selector (MANUAL) (MANUAL)
WAIL Yelp Wail
YELP Priority (HI-LO) Yelp
PRTY Air Horn Air Horn
NOTE: Peak-and-hold siren and air horn are the
“Press and Hold” features.
4-7. AUX IN FUNCTION
If installed, set the selector to switch to the MAN
position. Activate the installed auxiliary switch to
sound the wail tone. To deactivate the wail tone,
move the selector switch to the WAIL position and
back to the MAN position.
4-8. AUX OUT FUNCTION
If installed, this function will activate warning
lights any time wail, yelp, or priority (HI-LO) is
sounding.
4-9. SPEAKER DIAGNOSTIC TEST
To test the speakers, set the selector switch to
RAD. Press the AIR HORN/MANUAL paddle
switch down. Four rapid beeps should be heard and
the yellow LEDs should ash four times. Note that
the yellow LEDs will illuminate when a siren tone
is sounding.
4-10. PARK-SIREN DEACTIVATOR
If installed, shifting the vehicle into PARK will
silence the siren tones. Move the shift lever to
another position to sound the siren tone.
4-11. PA AND RADIO GAIN ADJUSTMENT
The PA4000 comes from the factory with the PA
and radio gain set to maximum. To decrease the
gain settings, proceed as follows while referring to
gure 3-1.
1. Locate the PA and radio potentiometers on the
logic PC board near the RJ45 jack.
2. Using a small at blade screwdriver, rotate the
appropriate potentiometer to a desired volume
setting.
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SECTION V
SERVICE AND MAINTENANCE
SAFETY MESSAGE TO PERSONNEL SERVICING
FEDERAL SIGNAL ELECTRONIC SIRENS
AND LIGHT/SOUND SYSTEMS
People’s lives depend on your proper servicing of
Federal Signal products. It is important to read
and follow all instructions shipped with the
products. In addition, listed below are some other
safety
instructions and precautions you should follow:
• Read and understand all instructions in this
manual before servicing the electronic siren or
control head.
• To properly service an electronic siren or control
head, you must have a good understanding of
automotive electrical procedures and systems,
along with prociency in the installation and
service of safety warning equipment. Always
refer to the vehicle service manuals when
performing service on a vehicle.
• Electronic repairs must be performed by a
qualied and competent electronics technician.
Your hearing and the hearing of others, in or
close to your emergency vehicle, could be
damaged by loud sounds. This can occur from
short exposures to very loud sounds or from
longer exposures to moderately loud sounds.
For hearing conservation guidance, refer to
federal, state, or local recommendations.
OSHA Standard 1910.95 offers guidance on
“Permissible Noise Exposure.”
• All effective sirens and horns produce loud
sounds (120 dB) that may cause permanent
hearing loss. Always minimize your exposure
to siren sound and wear hearing protection. Do
not sound the siren indoors or in enclosed areas
where you and others will be exposed to the
sound.
• Do NOT connect this system to the positive
terminal of the battery until servicing is
complete and you have veried that there are no
short circuits to ground.
• For the electronic siren to function properly,
the ground connection must be made to the
NEGATIVE battery terminal.
• After repair, test the electronic siren and speaker
system to ensure that it is operating properly.
• Federal Signal siren ampliers and speakers
are designed to work together as a system.
Combining a siren and speaker from different
manufacturers may reduce the warning
effectiveness of the siren system and may
damage the components. You should verify or
test your combination to make sure the system
works together properly and meets both federal,
state and local standards or guidelines. Failure
to follow all safety precautions and instructions
may result in property damage, serious injury,
or death.Failure to follow all safety precautions
and instructions may result in property damage,
serious injury, or death to you or others.
5-1. GENERAL
Most of the component electronic parts used in
the Model PA4000 are standard items that can be
obtained from any radio or electronics supply shop.
In order to reduce equipment down-time, Federal
recommends that the entire Amplier power
printed circuit board (Part No.2001191A-01) or
Amplier logic circuit board (Part No. 2001191A-
02) be replaced. The printed circuit boards are
relatively inexpensive allowing you to keep an
adequate supply in your repair shop.
The factory can and will service your equipment
or assist you with technical problems, should any
arise, that cannot be handled satisfactorily and
promptly locally.
Communications and shipments should be
addressed to:
Service Department
Federal Signal Corporation
2645 Federal Signal Drive
University Park, IL 60466
1-800-433-9132
(In Illinois) 1-708-534-3400
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Page 18
If any unit is returned for adjustment or repair, it
can be accepted only if we are notied by letter or
phone in advance of its arrival. Such notice should
clearly indicate the service requested and give
all pertinent information regarding the nature of
malfunction and, if possible, its cause.
5-2. SIREN
A. General
When installing new output transistors, ensure that
the Sil-Pad insulators are installed between the heat
sink and transistors.
Before reinstalling the repaired PA4000, make
certain that the speaker(s) is (are) not defective.
Any competent electronic technician should
have little difculty in tracing and correcting a
malfunction, should any occur. For emergency
replacement of any of the small components, care
must be used when soldering. Heat easily impairs
transistors, capacitors and circuit boards. It is
therefore advisable to use longnose pliers or a
similar heat sink on the lead being soldered.
B. Removal for Servicing
To remove the electronic assembly, located inside
the Amplier chassis, for servicing; proceed as
follows :
1. Remove the two phillips head screws on the
amplier’s side which secure the cover to the
Amplier chassis.
2. Remove the cover by sliding it away from the
chassis.
C. Removal of Circuit Board
HIGH CURRENT ARCING: Do not connect this
system to the vehicle battery until ALL other
electrical connections are made and you have
veried that no shorts exist. High current
conductors can cause hazardous sparks or burning
wire, resulting in electrical res.
E. Testing
All effective sirens and horns produce loud sounds
(120 dB) that may cause permanent hearing loss.
Always minimize your exposure to siren sound and
wear hearing protection. Do not sound the siren
indoors or in enclosed areas where you and others
will be exposed to the sound.
After servicing is complete, perform a test of all
functions to ensure the siren is operating properly.
The Amplier logic circuit board (top circuit board)
is secured to the chassis by four Phillips head
screws. Unplug the eleven-position connector, the
RJ45 connector, and the red and black connectors
before removing the screws.
D. Replacement of Output Transistors
Failure of one or both of the output transistors
(Q106, Q109) is usually the result of a defective
speaker (short circuited voice coil). Rebroadcast
of the unsquelched radio or music for long periods
will also have a detrimental effect on the output
transistors, and is therefore not recommended.
Federal recommends that both output transistors
be replaced should only one device prove to be
defective. This practice will ensure long periods of
service between failures.
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5-3. REPLACEMENT PARTS LIST
Reference Designation Description Part Number
Q106, Q109 Transistor, TIP35C, NPN, Power
FP1
LP1, 2
Fuse, 20A, 32V 148A142A
Lamp, Panel 149A120
125B437B
Insulator (Q106, Q109) 235A150A
Amplier Power Circuit Board, PA4000
2001191A-01
(with parts installed)
Amplier Power Circuit Board, PA4000NY
2005002A-02
(with parts installed)
Amplier Logic Circuit Board
2005001B
(with parts installed)
Amplier Logic Board, PA4000NY - HI-LO 2005001B-03
Control Head Circuit Board
2001190A
(with parts installed)
Chassis
Cover
85361107A
85361103A
Amplier Assembly, PA4000 85361108A
Amplier Assembly, PA4000NY 85361108A-02
Control Assembly
Accessory Kit
Microphone
Output Transformer
85361106A
85361109A
258B577A-02
120258A
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