PA300LM-CAN
Price $4.00
Model PA300LM-CAN
ELECTRONIC SIREN
INSTALLATION AND OPERATING INSTRUCTIONS
LIMITED WARRANTY
The Signal Division, Federal Signal Corporation (Federal), 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
one year on labor from the date of delivery to the first user-purchaser.
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 charges for removal
and re-installation of the product. Lamps, flash tubes, or 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 relating to service or modification at any
facility other than the 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 OR
WORKMANSHIP.
SECTION I
GENERAL DESCRIPTION
The optional MNCT-SB microphone 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 adjustable by means of a front
panel GAIN control. Radio inter-connect wires are
built-in. No additional cables are required.
The Model PA300LM-CAN can drive one or two
11-ohm impedance, high power (100W) or low power
(58W) speakers. When two speakers are used, they
must be connected in parallel and in phase.
290A4127-01
The Tap II feature allows the driver to change
the siren sound from wail to yelp (or vice-versa) via
the vehicle’s horn ring. Tap II provides especially
effective traffic clearing capability. In addition to Tap
II, additional alternate sounds can be activated in
two other selector switch positions by depressing and
holding the horn ring for as long as the alternate
sound is desired. The charts in Section IV of this
manual illustrate the operation of these features
more fully.
Figure 1-1. Model PA300LM-CAN Electronic Siren.
The Federal Model PA300LM-CAN (figure 1-1)
is a precision built, efficient and economical, fullfeatured electronic siren of advanced design. It
provides wail, yelp and hi-lo siren tones, as well as
the Tap II feature, public address (PA), radio rebroadcast and an air horn sound. An optional
MNCT-SB microphone is available for the PA function.
Other special features of the Model
PA300LM-CAN include:
The siren may be installed in positive or 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.
-1-
•
High degree of reliability is achieved
through the use of integrated circuits
and silicon output transistors.
•
Control panel is illuminated with
non-glare lighting.
SECTION II
SPECIFICATIONS
Input Voltage ...............................................................
11VDC to 15VDC.
Polarity .........................................................................
Negative or positive ground.
Standby Current ..........................................................
120ma. max. (not incl. panel light).
Operating Temperature Range ...................................
-30°C to +65°C.
Operating Current (Wail mode) ..................................
10 amperes, max.
(11 ohm load, @ high power)
Frequency Range .........................................................
725 to 1600Hz.
Cycle Rate ....................................................................
Wail- 12 cycles/min.
Yelp- 180 cycles/min.
Hi-Lo- 60 cycles/min.
Voltage Output (approx.) .............................................
64V peak-to-peak.
Dimensions (HWD) ......................................................
2-1/2" (6.35cm) x 6-1/2" (16.51cm) x 8-1/2" (21.59cm).
Net Weight (incl. microphone) ....................................
4-1/2 lbs. (2.04kg).
Shipping Weight ..........................................................
6-1/2 lbs. (2.94kg).
NOTE
The following parameters were obtained with the
radio input potentiometer and GAIN control set
at maximum.
Audio Frequency Range ..............................................
300 to 10,000Hz.
Harmonic Audio Distortion (300-3,000Hz) .................
10% max. all power levels from 1/2 to 50 watts (frequency
response ±3dB).
Input Impedance (Radio) .............................................
2000 ohms.
Input voltage required to obtain 20VRMS across
speaker load (Radio) ..................................................
0.55VRMS.
-2-
SECTION III
INSTALLATION
SAFETY MESSAGE TO INSTALLERS
OF
ELECTRONIC SIRENS
WARNING
The lives of people depend on your proper installation and
servicing of Federal products. It is important to read and
follow all instructions shipped with the products. In addition,
listed below are some other important safety instructions and
precautions you should follow:
•
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.
•
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 air
bag 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. Insure that your installation will not
affect vehicle operation and safety functions or circuits.
Always check vehicle for proper operation after
installation.
•
DO NOT install equipment or route wiring or cord in the
deployment path of an air bag.
•
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.
Before Installation
Qualifications
•
To properly install an electronic siren: you must have a
good understanding of automotive electrical procedures
and systems, along with proficiency 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 amplifiers 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.
After Installation
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 verified that
no shorts exist. If wiring is shorted to vehicle frame,
high current conductors can cause hazardous sparks
resulting in electrical fires or flying molten metal.
Be sure the siren amplifier 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.
•
After installation, test the siren system 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 and/or reinstalling the product.
Failure to follow all safety precautions and instructions may
result in property damage, serious injury, or death to you or others.
-3-
CAUTION
1/4" SPLIT
LOCKWASHER
MOUNTING UNDER DASH
1/4-20 HEX NUT
Damage to unit will occur if not properly
fused. If a chassis mounted fuse is NOT installed, ensure that an in-line fuse (20A) and
fuseholder are installed in the red control
cable lead (P5, pin 6).
1/4-20 x 3/4" HEX
HD CAP SCREW
CAUTION
1/4-20 x 1/2"
HEX HD. CAP
SCREW WITH
LOCKWASHER
MUST BE USED
AS SHOWN
LONGER SCREW
WILL CAUSE
CIRCUITRY
DAMAGE.
3-1. UNPACKING.
MOUNTING
BRACKET
1/4-20 x 1/2" HEX
HD. CAP SCREW
After unpacking the Model PA300LM-CAN,
examine it for damage that may have occurred in
transit. If the equipment has been damaged, file a
claim immediately with the carrier stating the extent
of damage. Carefully check all envelopes shipping
labels and tags before removing or destroying them.
1/4" SPLIT
LOCKWASHER
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Before proceeding with installation, ensure that
the following parts have been included in the carton.
Qty.
de
n
Sig
C
al
EN
SIR
1/4-20 x 1/2"
HEX HD. CAP
SCREW
Description
Cable Assembly
Lockwasher, 1/4
Screw, 1/4-20 x 1/2
1/4" SPLIT
LOCKWASHER
NOTE:
ONLY ONE BRACKET
IS SUPPLIED
290A4127-02
Figure 3-1. Installation of PA300 Under Dash.
A. Use the mounting bracket as a template
and scribe two drill positioning marks at the selected
mounting location under the dash.
3-2. MOUNTING BRACKET.
WARNING
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.
CAUTION
Before drilling holes in ANY part of a vehicle,
be sure that both sides of the mounting surface are clear of parts that could be damaged;
such as brake lines, electrical wiring or other
vital parts.
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.
B. Drill two 1/4-inch diameter holes at the
position marks.
The electronic siren comes equipped with a
swinging bracket which enables it to be mounted in
variety of positions. Positioning the bracket above the
unit allows mounting to the underside of the dash.
Positioning the bracket below the unit will permit
mounting on any horizontal surface.
C. Secure the mounting bracket to the dash
with user-supplied 1/4-20 x 3/4 hex head screws, 1/4
split lockwashers and 1/4-20 hex nuts as shown in
figure 3-1.
D. Secure the electronic siren to the mounting
bracket with 1/4-20 x 1/2 hex head screws and 1/4"
split lockwashers as shown in figure 3-1.
The unit should be mounted in a position that is
both comfortable and convenient to the operator.
Keep visibility and accessibility of controls in mind.
To install the unit under the dash, determine the
mounting location and proceed as follows (see figure
3-1).
CAUTION
To avoid damage to the unit, the 1/4-20 x 1/2
hex head cap screws and the 1/4 split lockwashers must be used as shown in figure 3-1.
CAUTION
The unit must be installed in an adequately
ventilated area. Never install near heater
ducts.
E. Tilt the unit to the desired position.
Tighten the 1/4-20 x 1/2 hex head screws.
-4-
3-3. POWER CABLE INSTALLATION.
BLU
ORN
CAUTION
BRN
1
Wiring changes have been made which requires the replacement of the old power cable,
to achieve optimum siren performance. If this
unit is used as a replacement in a two-speaker
installation, you MUST remove the original
power cable and install the new power cable
(supplied).
3
*
*
SPEAKER, HIGH POWER(100W)
BLK (4-8)
4
5
6
GRN
(NEG.) (-)
CHASSIS GROUND
RED (6-11)
7
8
9
10
11
12
(POS.) (+)
WHT/YEL
HORN RING
WHT
BRN
BRN
*
The power cable included in the carton is
equipped with a twelve-prong plug (P5) that mates
with the connector (J5) on the rear of the electronic
siren (see figure 3-2). The various wires on the
connector must be connected as follows:
A.
2
SPEAKER, COMMON
SPEAKER, LOW POWER(58W)
NEVER CONNECT THE BROWN AND ORANGE SPEAKER
WIRES TOGETHER TO THE SPEAKER(S).
HORN
VEHICLE TWO-WAY
RADIO SPEAKER
290A4127-04
Figure 3-3. Control Cable Wiring Diagram.
shown in the Control Cable Wiring Diagram, figure
3-3.
Speaker.
B.
Radio.
The unit is designed to operate with one 11ohm impedance speaker or two 11-ohm impedance,
low power (58W) or high power (100W), speakers
connected in parallel and in phase. On FEDERAL
speakers, this can be accomplished by connecting the
two speaker leads marked “1” to the SPEAKER
COMMON control cable lead and the two speaker
leads marked “2” to the SPEAKER HIGH POWER or
SPEAKER LOW POWER control cable leads. See
figure 3-3.
To allow incoming radio messages to be
rebroadcast over the outside speakers, connect the
two brown zip cord leads (P5, pins 9 and 12) across
the two-way radio’s speaker.
CAUTION
1. Locate the wire that connects the
vehicle horn ring switch to the horn or horn relay.
Cut this wire.
C.
Horn Ring.
In order to utilize the Tap II and Press-andHold features of the siren, the following procedure
must be performed.
Damage to the unit will occur if speaker wires
are improperly connected. NEVER CONNECT
the brown SPEAKER HIGH POWER (100W)
wire and orange SPEAKER LOW POWER
(58W) wire together to the speaker(s).
2. See figure 3-4. Splice the white/yellow
control cable wire (P5, pin 7) to the horn ring side of
the wire that was cut in step 1. Insulate the splice
with user-supplied wire nuts.
Using 18 gauge wire, connect the speaker
leads (58W speakers to SPEAKER LOW POWER and
100W speakers to SPEAKER HIGH POWER) as
CAUTION
The horn ring transfer circuit of the siren
is capable of switching a maximum of 2amperes. Some vehicles do not have a horn
relay and, consequently, will draw more
than 2-amperes when the vehicle horn is
activated. Consult your vehicle service
manual or a qualified mechanic to determine the current required to activate the
horn. If it is less than 2-amperes, perform
the procedure in step 3. If it is greater than
2-amperes, perform steps 4 through 10.
CAUTION
SYSTEM MUST BE FUSED WITH
20A IN LINE FUSE(SUPPLIED)
DO NOT EXCEED 2A MAX. ON
HORN RING CIRCUIT. SEE
INSTALLATION INSTRUCTIONS.
J5
290A4127-03
3. Splice the white control cable wire (P5,
pin 10) to the horn side of the cut wire. Insulate the
splice with a user-supplied wire nut.
Figure 3-2. Rear View of PA300.
-5-
VEHICLE HORNS
device in the hole to protect the wire against damage
from rough edges.
STEERING COLUMN
RELAY (USER SUPPLIED)
CAUTION
SW
TO BATTERY
Before drilling holes in ANY part of the
vehicle, ensure that both sides of the surface
are clear of parts that could be damaged;
such as brake lines, fuel lines, electrical
wiring or other vital parts.
CUT WIRE
WHT
TO HORN, OR HORN RELAY
CONTROL CABLE ASSEMBLY
WHT/YEL TO HORN SWITCH
290A4127-05
Figure 3-4. Horn Ring Connections.
If your vehicle has a negative ground
electrical system, perform the procedure in paragraph 1. Perform the procedure in paragraph 2, if the
vehicle has a positive ground system.
4. Obtain a SPST relay of sufficient
contact current capacity to activate the vehicle horn.
Refer to figure 3-4 while performing the following
steps.
5.
1.
Mount the relay in a suitable location.
a. Connect the green (P5, pin 5)
control cable lead to the vehicle chassis as close as
practical to the siren. Scrape paint away from the
selected bolt hole to ensure a good electrical connection to the chassis.
6. Connect the horn side of the wire cut
in step 1 to the relay contact terminal.
7. Determine the “sense” of the vehicle’s
horn ring activation circuit, i.e., does the horn circuit
require a switched positive voltage or switched
ground for activation.
b. Route the red (P5, pin 6) and the
black (P5, pin 4) control cable leads, through the
previously drilled hole, into the engine compartment.
Route the wires through existing clamps and holders
toward the battery.
8. Connect the relay wiper terminal to
the positive or negative potential determined in step
7.
c.
To protect the red wire when
connected to the battery terminal, use an in-line
fuseholder and 20-ampere fuse (not supplied). The
fuseholder should be installed as close as practical to
the battery. If necessary, additional #14 gauge or
heavier wire can be spliced to the red lead.
9. Connect the white control cable wire to
one end of the relay coil.
10. Connect the other end of the relay coil
to the opposite potential of that connected to the
wiper in step 8.
D.
Negative Ground.
WARNING
Connection to Power Source.
If wires are shorted to the vehicle frame or
each other, high current conductors can cause
hazardous sparks resulting in electrical fires
and molten metal.
CAUTION
Damage to the unit will occur if not properly
fused. Ensure that an in-line fuse (20A) and
fuseholder are installed in the control cable
leads (P5, pin 6) for negative ground, or (P5,
pin 4) for positive ground, installations.
Verify that no short circuits exist before
connecting to the Positive (+) battery terminal.
The PA300LM-CAN can operate from any
12-volt positive or negative ground vehicle electrical
system. Therefore, before making any electrical
connections, determine the polarity of the vehicle
electrical system ground.
DO NOT connect this system to the vehicle
battery until ALL other electrical connections
are made and mounting of all components is
complete.
Power for the siren can be obtained from
the vehicle’s power distribution center or directly
from the vehicle battery. If power is going to be
obtained directly from the vehicle battery, drill a hole
in the vehicle firewall for the power lead to enter the
engine compartment. Place a grommet or similar
Failure to observe this WARNING will result
in fire, burns and blindness.
d. Connect the in-line fuseholder
lead to the positive (+) battery terminal.
-6-
e.
Connect the black wire to the
negative terminal of the battery.
2.
3-4. AIR HORN PRESS-AND-HOLD
MODIFICATION.
Positive Ground.
The unit comes from the factory set so that the
peak-and-hold sound will be heard when the Selector
switch is set to MANUAL and the vehicle horn ring is
activated. To change the sound to air horn, merely
move jumpers JU1 and JU2 from the "PEAK" position on the P.C. board to the “AIR” position (see
figure 3-5).
a. Connect the green (P5, pin 5)
control cable lead to the vehicle chassis as close as
practical to the siren. Scrape paint away from the
selected bolt hole to ensure a good electrical connection to the chassis.
b. Route the black (P5, pin 4) and
the red (P5, pin 6) control cable leads, through the
previously drilled hole, into the engine compartment.
Route the wire through existing clamps and holders
toward the battery.
3-5. RELATIVE PA LOUDNESS ADJUSTMENT.
After the electronic siren is completely installed
in the vehicle, set the Selector switch to MANUAL.
Depress the microphone push-to-talk switch, speak in
a normal voice, and adjust the GAIN control for the
desired sound level outside the vehicle. Turn-on the
vehicle’s two-way radio and adjust the volume to a
comfortable listening level inside the vehicle. Then
set the Selector switch to RADIO. Stand outside of
the vehicle and note the radio rebroadcast loudness.
If the sound volume is too loud or too soft, adjust R11
through the hole at the bottom of the siren (see figure
3-6) to the desired sound level.
c.
To protect the black wire when
connected to the battery terminal, use an in-line
fuseholder and 20-ampere fuse (not supplied). The
fuseholder should be installed as close as practical to
the battery. If necessary, additional #14 gauge or
heavier wire can be spliced to the black lead.
WARNING
If wires are shorted to the vehicle frame or
each other, high current conductors can cause
hazardous sparks resulting in electrical fires
and molten metal.
After the adjustment is completed, the loudness
of the radio rebroadcast and public address may be
varied with the front panel GAIN control.
Verify that no short circuits exist before
connecting to the Positive (+) battery terminal.
C2
C1
DO NOT connect this system to the vehicle
battery until ALL other electrical connections
are made and mounting of all components is
complete.
PEAK PEAK
JU1
K1
Q1
d. Connect the in-line fuseholder
lead to the negative (hot) battery terminal.
CR5
R7
CR4
FRONT
IC6
JU2
AIR
Failure to observe this WARNING will result
in fire, burns and blindness.
R8
Q2
C3
AIR
CR3
R18
R19
R20
R21
C6
C7
C9
Q3
R22
IC1
290A4127-06
e.
Connect the red wire to the
positive terminal of the battery.
Figure 3-5. Press and Hold Modification.
-7-
3-6. TESTING AFTER INSTALLATION.
R11
WARNING
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.
290A4127-07
Figure 3-6. Relative PA Loudness Adjustment.
-8-
SECTION IV
OPERATION
SAFETY MESSAGE TO OPERATORS OF
FEDERAL SIGNAL ELECTRONIC SIRENS
AND LIGHT/SOUND SYSTEMS
•
WARNING
The lives of people depend on your safe operation of Federal products. It is important to
read and follow all instructions shipped with
the products. In addition, listed below are
some other important safety instructions and
precautions you should follow:
Signaling Limitations
•
Be aware that the use of your visual and audible signaling devices does not give you the
right to force your way through traffic. Your
emergency lights, siren, and actions are
REQUESTING the right-of-way.
•
Although your warning system is operating
properly, it may not alert everyone. People
may not hear, see, or heed your warning signal.
You must recognize this fact and continue
driving cautiously.
•
Situations may occur which obstruct your
warning signal when natural or man-made
objects are between your vehicle and others.
This can also occur when you raise your hood
or trunk lid. If these situations occur, be especially careful.
Qualifications
•
Frequently inspect the speaker to ensure that
it is clear of any obstruction, such as mud or
snow, which will reduce maximum sound
output.
To properly use an electronic siren and
speaker(s): you must have a good understanding
of general vehicle operation, a high proficiency
in the use of safety warning equipment, and
thorough knowledge of state and federal
UNIFORM TRAFFIC CODES.
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.”
Driving Limitations
All effective sirens and horns produce loud
sounds (120 dB) that may cause permanent
hearing loss. Always minimize your exposure to
siren sound, roll up your windows and wear
hearing protection. Do not sound the siren
indoors or in enclosed areas where you and
others will be exposed to the sound. Only use
the siren for emergency response situations.
Sound Limitations
•
•
Before using the vehicle, check to see if the
siren speakers are concealed from view. If the
siren speaker is not in clear view on the front of
the vehicle, use extra caution when operating
the vehicle. A concealed siren speaker installation is less effective at warning others.
•
At the start of your shift, you should ensure
that the light/sound system is securely attached
to the vehicle and operating properly.
•
If the unique combination of emergency vehicle
equipment installed in your vehicle has
resulted in the siren controls being installed
in a position that does not allow you to operate
them by touch only, OPERATE CONTROLS
ONLY WHILE YOUR VEHICLE IS STOPPED.
•
If driving conditions require your full attention, you should avoid operating the siren
controls while the vehicle is in motion.
Continuing Education
•
Maximum sound output will be severely reduced if any objects are in front of the speaker.
If your installation has obstructions in front
of the speaker, drive even more cautiously.
File these instructions in a safe place and
refer to them periodically. Give a copy of these
instructions to new recruits and trainees.
Failure to follow these safety precautions may
result in property damage, serious injury, or death to
you, to passengers, or to others.
-9-
C.
4-1. GENERAL.
All controls utilized during normal operation of
the Model PA300LM-CAN are located on the front
panel (see figure 4-1).
In this position, the siren produces a
continuous “wailing” sound, up and down in frequency.
The optional MNCT-SB plug-in microphone provides high quality voice reproduction in the public
address mode. The microphone push-to-talk switch
will override all siren functions, except radio rebroadcast, for instant PA use.
D.
YELP.
In this position; a continuous, rapid “warbled” tone is generated.
4-2. GAIN CONTROL.
E.
The GAIN control is used to turn the siren on
and off. Also, it is used to control the volume when
the siren is used for public address or radio amplification. Clockwise rotation of the knob increases voice
volume in the public address or radio amplification
mode. The GAIN control does not control the volume
of the siren signals.
HI-LO.
In this position, a two-tone sound will be
heard. This distinctive tone may be reserved for any
special indication or situation.
4-4. HORN/SIREN SWITCH.
The HORN/SIREN switch, located on the left
side of the front panel, activates the electronic air
horn sound (up) or peak-and-hold sound (down) in
any siren mode except radio.
The maximum clockwise setting of the control
will be determined, in most cases by the point at
which feedback or “squeal” occurs. This will depend
upon the microphone gain, open windows, speaker
placement, proximity of reflecting surfaces (building
or other vehicles), etc. Adjust the GAIN control to a
position just below the point at which feedback
occurs or as desired.
4-5. TAP II FUNCTIONS.
Tap II allows the driver to change the siren
sound via the vehicle’s horn ring. This feature is
especially effective for clearing traffic. The chart
below demonstrates how the horn ring can be used to
change the siren sound:
4-3. SELECTOR SWITCH.
The Selector switch is a five-position rotary
switch used to select the mode of operation. The
following are positions on the Selector switch.
A.
WAIL.
TAP II FUNCTIONS
RADIO.
In this position, incoming radio messages
are amplified by the siren and rebroadcast over the
outside speaker.
B.
MANUAL.
In this position, it is possible to operate the
siren by activating the HORN/SIREN switch. The
siren can also be activated by means of an auxiliary
switch, such as the horn ring button (refer to paragraph 4-6).
FEDERAL SIGNAL CORPORATION
HORN
MANUAL
RADIO
Wail
Yelp
Yelp
Wail
Wail
Yelp
GAIN
PRESS AND HOLD FUNCTIONS
OFF
Selector
Switch
Position
SIREN
SW2
Second Horn
Ring Tap
Produces
Additional alternate sounds can be activated in
two other Selector switch positions, by depressing
and holding the horn ring for as long as the alternate
sound is desired. The chart below shows these
additional “Press and Hold” functions:
HI-LO
SW3
First Horn
Ring Tap
Produces
4-6. PRESS AND HOLD FUNCTIONS.
PA300
WAIL
YELP
Selector
Switch
Position
Hi-Lo
Manual
R37
290A4127-08B
Figure 4-1. Front View.
-10-
Press on
Horn Ring
Produces
Release of
Horn Ring
Produces
Air Horn
Peak and
Hold or
Air Horn
Hi-Lo
Coast down
and silence
or silence
SECTION V
SERVICE AND MAINTENANCE
•
SAFETY MESSAGE TO PERSONNEL SERVICING
FEDERAL SIGNAL ELECTRONIC SIRENS
WARNING
The lives of people depend on your proper servicing of Federal 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 speaker.
•
To properly service an electronic siren or
speaker: you must have a good understanding
of automotive electrical procedures and systems,
along with proficiency in the installation and
service of safety warning equipment. Always
refer to the vehicle's service manuals when
performing service on a vehicle.
•
•
Failure to follow all safety precautions and
instructions may result in property damage, serious
injury, or death to you or others.
5-1. GENERAL.
For warranty service, contact your local Distributor.
The factory can and will service your equipment
or assist you with technical problems that cannot be
handled satisfactorily and promptly locally.
Electronic circuit and speaker repairs must be
performed by a qualified and competent electronic technician.
Communications and shipments should be
addressed to:
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 verified that there are no
short circuits to ground.
•
In order 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 amplifiers 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.
Service Department
Federal Signal Corporation
2645 Federal Signal Drive
University Park, IL 60466
1-800-433-9132
-11-
5-2. REPLACEMENT PARTS LIST.
Reference
Designation
Description
Q7, Q8
T2
F1
DS1
SW2
SW3
J5
Part Number
Transistor, But 70, NPN, Power
Transformer, Output
Fuse, 20A, 3AG, 32V
Lamp, 14V, #1893
Switch, Rotary
Switch, Paddle
Connector, 12-pin Molex (Chassis Mount)
Molex Pin, Male (Use with 139A152)
Microphone, Optional
Microphone Clip
Knob, GAIN control
Knob, Selector
Circuit Board (with parts installed)
Gain Control
Harness, Wiring
Installation Accessory Kit
Bracket, Mounting
Face Plate Logo
Face Plate
BLACK
125467
120C165-04
148A127
149A121
122B215
122358
139A152
233A129
MNCT-SB
85361082
141A102
141A111
2001220
106A116
175684-03
8537312
8536B022
8146B892-01
8146C893
WHITE
RED
J2
J3
OUTPUT TRANSISTOR
FACE PLATE
PADDLE SWITCH
OUTPUT TRANSFORMER
SELECTOR KNOB
ROTARY SWITCH
GAIN CONTROL KNOB
J1
J4
FACE PLATE LOGO
J5
OUTPUT TRANSISTOR
GAIN CONTROL
RED TERMINALS
J1
BLACK TERMINALS
J4
Figure 5-1. Internal View.
-12-
290A4127-09B
255338D
REV. D 601
Printed in U.S.A.
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