PRICE $4.00 MODEL PA4000U ELECTRONIC SIREN INSTALLATION, OPERATION, AND SERVICE 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 Microphone is required if it is desired to make use of the PA capability. It provides high quality voice reproduction without feedback (squeal). The microphone push-to-talk switch overrides any siren signal for instant PA use. PA volume is preset at the factory for maximum gain. The Model RMK, a microphone extension cable kit, is also available. The Model PA4000U is designed to drive one 100 watt speaker. Other special features of the Model PA4000U include: Figure 1-1. Model PA4000U. The Federal Model PA4000U (figure 1-1) is a precision built, efficient and economical electronic siren incorporating state-of -the-art design. It provides wail, Tap II, yelp and manual peak-and-hold. The Tap II feature allows the driver to change the siren sound from wail to yelp via the vehicle’s horn ring. This can also be accomplished by depressing the control head’s Tap II switch. Tap II provides an especially effective traffic clearing capability. • High degree of reliability is achieved through the use of a CMOS microprocessor and silicon output transistors. • The printed circuit board assembly 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. 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. • AUX/IN input can activate wail when the WAIL/STBY switch is in the STBY position. • Park-Siren Deactivator can deactivate siren tones when the vehicle is shifted into PARK. The siren is made up of an Amplifier and a Control Head. The Amplifier is suitable for mounting in a dry, adequately ventilated location, while the Control Head is designed for mounting under the dashboard. Communication between the two units is via the supplied cable. (See Section III for additional information.) • When the WAIL/STBY switch is in the STBY position, the horn ring will activate the vehicle horn. • The peak-and-hold tone is activated when depressing the TAPII/TEST switch with the WAIL/STBY switch in the STBY position. The siren also has provisions for public address (PA) operation. An optional Federal Model MNCT-SB • A diagnostic capability for speaker testing uses four test tones for audible indication. -1- SECTION II SPECIFICATIONS Input Voltage ..................................................... 11 Vdc to 16 Vdc Polarity ............................................................... Negative ground electrical systems only Standby Current ................................................ 75mA Operating Current (Control Head & Ampl.) .... 8A (at 13.6V with 11-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 (frequency response ±3dB) Harmonic Audio Distortion ............................... (300-3000Hz) 10% max. all power levels from 1/2 to 50 watts Operating Temperature Range ......................... -30°C to +65°C Dimensions (HWD) Control Head ............................................... Amplifier Module ........................................ 2.5" x 1.5" x 1.5" 3.6" x 6.9" x 4.8" Shipping Weight (approx.) ................................ 6 lbs. -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- lockwashers and hex nuts. Consequently, the holes drilled in the mounting surface must be appropriate for the mounting screws selected. If the threadforming 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. 3-1. UNPACKING. After unpacking the Model PA4000U, 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 the damage. Carefully check all envelopes, shipping labels and tags before removing or destroying them. Secure the Amplifier to the mounting surface, using the mounting hardware, including lockwashers. 3-2. GENERAL. The Model PA4000U is a 12-volt electronic siren designed for undercover applications. The standard operating functions of this siren are Wail, Tap II, Yelp, Manual Peak-and-Hold and Public Address. In addition, an audible speaker test feature is provided. The unit is designed for 100 watt applications. 3-4. CONTROL HEAD INSTALLATION. 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. An optional Model MNCT-SB Microphone can be added to utilize the public address capability of the electronic siren. If needed, an optional microphone extension cable kit (Model RMK) is available. 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. 3-3. AMPLIFIER INSTALLATION. CAUTION The Amplifier is NOT waterproof. It must be mounted in a location which is sheltered from falling rain, snow, standing water, etc. Also, it must be installed in an adequately ventilated area. Never install near heater ducts. A. Peel off the protective paper backing from the legend plate. Carefully align the holes in the legend plate with the holes in the switch mounting bracket (see figure 3-1). NOTE Do not mount the Amplifier under the vehicle’s hood. Two equal sized mounting holes should be at the top of the bracket. Press the legend plate firmly against the bracket to insure that the plate adheres firmly to the bracket. A. Select a suitable mounting location for the Amplifier. 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 18 feet long. B. Select a suitable mounting location for the switch mounting bracket. Using the mounting bracket as a template, scribe two drill position marks at the mounting location. B. Using the mounting holes on the amplifier as a template, scribe four drill position marks at the mounting location. OPTIONAL SURFACE MOUNTING HARDWARE: MACHINE SCREW AND HEX NUT, OR THREAD FORMING SCREW SWITCH MOUNTING BRACKET (1) CAUTION #8-32 HEX NUT (2) 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, fuel lines, electrical wiring, or other vital parts. #8-32 x 1/2" MACH. SCREW RD. HEAD, SLOTTED (2) I PI TA IL WA ST TE 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 BY ST #8 x 1/2" THREAD FORMING RD. HEAD, SLOTTED (2) 290A2872B Figure 3-1. -4- LEGEND PLATE (1) 3. 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. CAUTION When drilling holes in ANY part of a vehicle, insure that both sides of the mounting surface are clear of parts that could be damaged; such as brake lines, fuel lines, electrical wiring or other vital parts. 4. Connect the amplifier end of the control cable as follows: C. Drill mounting holes at the position marks. Secure the mounting bracket with two user-supplied #8 thread-forming screws or two (each) user-supplied 8-32 screws and hex nuts as shown in figure 3-1. NOTE To install a wire in the eleven-position connector, insert the stripped end of the wire into the connector and tighten the screw at the appropriate connector position. D. See figure 3-2. Install the DPDT switch (six terminals) in the position marked WAIL/STBY. Install the SPDT switch (three terminals) in the position marked TAPII/TEST. Note that the switches snap in place when properly installed. a. Connect the green wire to position 5 of the eleven-position connector. b. Connect the white wire to position 4 of the eleven-position connector. 3-5. ELECTRICAL INSTALLATION. A. Control Cable. The supplied control cable is to be installed between the Amplifier and the Control Head. It consists of a 4-conductor (22 AWG) cable terminated on the control head end with spade connectors. The amplifier end of the cable has 1/4" of insulation stripped from the end of each conductor. To install the control cable, proceed as follows: c. Connect the red wire to position 3 of the eleven-position connector. 1. See figure 3-3. Connect the Control Head end of the cable to the connectors on the Control Head. Note that the black and white wires each have two wires crimped in the spade connector. The unit is supplied with an eleven-position connector to perform the electrical installation. Usersupplied 14-gauge red and black wires are required for the positive (+) and ground (-) connections. User supplied 18-gauge wires are required for the speaker, horn switch, park switch, and case ground connections. 2. Amplifier. d. Connect the black wire to a known good vehicle ground. B. Route the control cable toward the 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. WARNING Before drilling holes in ANY part of a vehicle, be sure that both sides of the surface being drilled are clear of parts that could be damaged; such as brake lines, fuel lines, electrical wiring, linkages or other vital parts. SWITCH MOUNTING BRACKET WITH LEGEND PLATE 1. Speaker. The unit is designed to operate with one 11-ohm impedance speaker (100W). Use 18 gauge wire and connect the speaker leads to positions 1 and 2 of the elevenposition connector as shown in figure 3-3. MOMENTARY ROCKER SWITCH (SPDT) I PI TA 2. IL WA Aux In. This input will activate the wail siren tone when the siren selector is in the standby position. ST TE BY ST ROCKER SWITCH (DPDT) Siren Connections. To use this feature, connect a usersupplied 18 gauge wire to position 6 of the elevenposition connector as shown in figure 3-3. 290A2873B Figure 3-2. -5- OPTIONAL MNCT MICROPHONE 1 11 PIN CONNECTOR PA4000U SPEAKER U.S.A. MICROPHONE PA 200mA MAX. 8 9 10 11 4" 7 POS NEG 6 BATTERY IGN WAIL 5 CHASSIS TAP II 4 AUX OUT TEST 3 AUX IN SPKR 2 PARK SPKR 1 GA. *18(10) 1/ UNIVERSITY PARK, IL. 2 BATTERY POS. AND NEG. 14 GA. FUSE ** 10 + BATTERY + 12VDC + 12VDC SW OR GROUND FUSIBLE LINK COMMON GROUND MOMENTARY SW. PUSH ON PUSH OFF OR GROUND TWO (2) 1/4" INSULATED FEMALE TERMINALS ** ** * WIRE STRIPPING TYPICAL VEHICLE SUPPLIED PARK/NEUTRAL HORN RING CIRCUIT 12V ROCKER SWITCH RED BLK N.C. CUT HERE LAMP HORN + 12VDC HORN RING RELAY IGNITION SWITCH DASH LIGHT RELAY ACTIVATED HORN RING ROCKER SWITCH 12V 12V GRN WHT REAR VIEW SWITCH BRACKET CUT HERE NOTE: HORN RING CIRCUIT AND RELAY ACTIVATED HORN RING ARE BOTH SHOWN. USE WHICH EVER IS ACCEPTABLE TO YOUR VEHICLE. HORN HORN RING 290A2874 Figure 3-3 3. Park-Siren Deactivator. 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. IMPORTANT It is the installer’s responsibility to determine an appropriate location in the vehicle circuitry to connect this wire. 4. Aux Out. NOTE This feature automatically deactivates siren tones when the vehicle is shifted into PARK. This output is activated any time the siren is operating. See figure 3-3. To use this feature, connect a user-supplied 18 gauge wire to position 7 of the eleven-position connector. Connect the other end This feature can be used to activate an external relay (200mA maximum) for controlling warning lights. -6- To use this feature, connect a usersupplied 18 gauge wire to position 8 of the elevenposition connector as shown in figure 3-3. 5. “POS” Amplifier connection. Connect the black wire to the “NEG” Amplifier connection. WARNING Ground. Before drilling holes in ANY part of a vehicle, be sure that both sides of the surface being drilled are clear of parts that could be damaged; such as brake lines, fuel lines, electrical wiring, linkages or other vital parts. Connect a user-supplied 18 gauge black wire to position 9 of the eleven-position connector. Connect the other end of the wire to common ground, located near the vehicle battery, that is connected directly to the negative battery terminal. 6. 2. If the Amplifier is installed in the vehicle passenger compartment, it will be necessary to drill a 5/8" hole in the vehicle firewall for the power and ground leads. 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”. C. If necessary, drill a 5/8" hole in the vehicle firewall. Install a user-supplied 5/8" grommet, or similar device or material, to protect the wiring and cabling against damage from rough edges. Horn Ring Connections. To connect the vehicle horn ring circuit so that the horn ring controls the car horn in the STBY mode and TAP II Yelp in the WAIL mode, proceed as follows (see figure 3-3): 3. Route the leads from the Amplifier 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. NOTE 4. Connect the black wire to a common ground, located near the vehicle battery, that is connected directly to the negative battery terminal. Secure mechanical and electrical connection is required. In order for horn ring transfer to operate, the vehicle’s horn must switch to ground. 1. Locate the wire that connects the horn ring switch to the horn or horn relay. Cut this wire somewhere between the horn ring switch and the horn or horn relay. 3-6. COAST DOWN ELIMINATION OPTION. The Model PA4000U comes from the factory wired so that it will coast down after a siren function has been deactivated. To eliminate the coast down feature, and have the siren sound come to an abrupt stop when the siren function is deactivated, proceed as follows (see figure 3-4): 2. Connect one wire from the horn ring switch to the wiper of the WAIL/STBY rocker switch. 3. Connect the other wire from the horn or horn relay to the top contact of the WAIL/STBY rocker switch. D. A. Microphone. Remove the cover. B. Locate JU206. Remove the jumper and install it in the NCD position. It is accessible without removing the circuit board. Route the microphone cable to the desired microphone location. Install a Federal Model MNCT* microphone (optional). An extension cable (Model RMK) is also available for the MNCT* microphone. C. Replace the cover. 3-7. PA GAIN ADJUSTMENT. E. Amplifier Power Connections. The Model PA4000U comes from the factory with the PA gain set to maximum. To decrease the gain setting, proceed as follows (see figure 3-3): When making the power connections to the PA4000U, each wire must be terminated with an appropriate 1/4" female, insulated, quick-connect terminal. Complete the wiring to the unit as follows: A. Locate the PA adjustment access hole near the microphone jack. 1. Crimp the 1/4" female terminals on one end of user-supplied 14 gauge red and black wires. See figure 3-3. Connect the red wire to the B. Using a small flatblade screwdriver, rotate the potentiometer to a desired volume setting. -7- E. Connect the red (+) wire to the positive (+) terminal of the power source. Secure mechanical and electrical connection is required. 3-8. INSPECTION AND FINAL INSTALLATION. A. Plug the eleven-position connector into the mating connector on the unit, and apply pressure until it locks into place. 3-9. TESTING AFTER INSTALLATION. B. Before connection to the power source, perform a visual check of all connections and wiring. 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. C. Ensure that there are no loose wire strands or other bare wire which may cause a short circuit. Also, all wires must be protected from any sharp edges which could eventually cut through the insulation. D. Use an ohmmeter to verify that a short circuit does NOT exist between the positive (+) leads and the vehicle chassis. After installation, test the electronic siren, including horn operation, to ensure that it is operating properly. WARNING After testing is complete, provide a copy of this manual to all operating personnel. 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. Verify that no short circuits exist before connecting to the Positive (+) battery terminal. DO NOT connect this system to the vehicle battery until ALL other electrical connections are made and mounting of all components is complete. Failure to observe this WARNING will result in fire, burns and blindness. 1 P201 14 CR201 R202 IC201 IC204 C205 C206 CD IC209 CD (COAST DOWN) R250 R248 R249 C229 C217 IC210 PARTS ARE NOT * SHADEDINSTALLED R252 C231 R251 C230 C226 C227 R247 C222 C224 C221 R244 R246 C220 JU205 C223 C218 C219 R242 J203 R240 R241 J202 NCD (NO COAST DOWN) JUMPER (FACTORY SET IN THE CD POSITION) R219 R239 C215 R216 C228 C225 + R243 NCD IC208 C216 C212 R236 R217 R218 R214 C214 R237 R215 C211 R235 R232 R231 JU206 X201 R238 R233 C208 R228 R229 C209 R230 R225 IC207 R226 CR203 R234 R224 R220 JU201 R213 R211 JU204 R210 R209 JU203 C210 R223 R227 R222 JU202 2005001A- R205 IC206 IC202 IC205 R207 R221 R203 C207 C213 IC203 01 R204 R212 R208 R206 R201 C204 C203 C201 C202 CR202 MADE IN U.S.A. R245 MICROPHONE JACK 290A3049B Figure 3-4. -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- 4-1. GENERAL. NOTE Yelp is a continuous rapid “warbled” tone. All controls utilized during normal operation of the Model PA4000U are located on the Control Head (see figure 4-1). 4-5. PEAK-AND-HOLD TONE. To generate the peak-and-hold tone, set the WAIL/STBY switch to the STBY position. Press and hold the TAPII side of the TAPII/TEST switch. The tone sounds until the switch is released. 4-2. WAIL/STBY SWITCH. The WAIL/STBY switch is a two-position rocker switch used to select the mode of operation. The following are positions on the switch. A. The Tap II functions can also be activated by depressing the TAPII side of the TAPII/TEST switch when the WAIL/STBY switch is in the WAIL position, as shown below: STBY. In the STBY position, it is possible to operate the siren by activating the TAPII side of the TAPII/TEST rocker switch. The siren can also be activated by means of an auxiliary switch, such as the horn ring button (refer to paragraph 4-5). Selector WAIL 1st Tap (TAPII) 2nd Tap (TAPII) Yelp Wail 4-6. AUX IN FUNCTION. B. WAIL. If installed, set the toggle switch to the STBY position. Activate the installed auxiliary switch to sound the wail tone. To deactivate the wail tone, move the toggle switch to the WAIL position and back to the STBY position. The horn ring controls TAP II when the siren is activated by an auxiliary input. In this position, the siren produces a continuous “wailing” sound , up and down in frequency. NOTE Pressing the microphone push-to-talk switch will override any function and provide instant public address operation. 4-7. AUX OUT FUNCTION. If installed, this function will activate warning lights any time wail or yelp is sounding. 4-3. HORN RING. 4-8. PARK-SIREN DEACTIVATOR. If connected as described in paragraph 3-5.C., the horn ring operates as follows: If installed, shifting the vehicle into PARK will silence the siren tones. Move the shift lever to another position to sound the siren tone. 1. With the rocker switch in the STBY position, the horn ring controls the vehicle horn. 4-9. SPEAKER DIAGNOSTIC TEST. 2. With the rocker switch in the WAIL position, the horn ring controls the Tap II feature. To test the speaker, set the WAIL/STBY switch to the STBY position. Then, press and hold the TEST side of the TAPII/TEST switch. Four rapid beeps should be heard. 4-4. 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 traffic. The chart below demonstrates how the horn ring can be used to change the siren sound. IL WA I PI TA TAPII FUNCTIONS Rocker Switch Position First Horn Ring Tap Produces ST TE Second Horn Ring Tap Produces BY ST 290A2875B Wail Yelp Wail Figure 4-1. -10- SECTION V SERVICE AND MAINTENANCE • • • • • • • • SAFETY MESSAGE TO PERSONNEL SERVICING FEDERAL SIGNAL ELECTRONIC SIRENS • Federal Signal siren amplifiers and speakers WARNING are designed to work together as a system. The lives of people depend on your proper servicCombining a siren and speaker from different ing of Federal products. It is important to read manufacturers may reduce the warning effecand follow all instructions shipped with the tiveness of the siren system and may damage products. In addition, listed below are some the components. You should verify or test your other safety instructions and precautions you combination to make sure the system works should follow: together properly and meets both federal, state and local standards or guidelines. Read and understand all instructions in this manual before servicing the electronic siren Failure to follow all safety precautions and or speaker. instructions may result in property damage, serious To properly service an electronic siren or injury, or death to you or others. speaker: you must have a good understanding of automotive electrical procedures and systems, 5-1. GENERAL. along with proficiency in the installation and For warranty service, contact your local Disservice of safety warning equipment. Always tributor. refer to the vehicle's service manuals when performing service on a vehicle. The factory can and will service your equipment Electronic circuit and speaker repairs must be or assist you with technical problems that cannot be performed by a qualified and competent elechandled satisfactorily and promptly locally. tronic 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.” Service Department Federal Signal Corporation 2645 Federal Signal Drive University Park, IL 60466 1-800-433-9132 5-2. SIREN. 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. A. Removal for Servicing. To remove the electronic assembly, located inside the Amplifier chassis, for servicing; proceed as follows : 1. Remove the two Phillips head screws on the amplifier’s side which secure the cover to the Amplifier chassis. 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. 2. Remove the cover by sliding it away from the chassis. In order for the electronic siren to function properly, the ground connection must be made to the NEGATIVE battery terminal. B. Removal of Circuit Board. The Amplifier logic circuit board (top circuit board) is secured to the chassis by four Phillips head screws. Unplug the eleven-position connector and the red and black power connectors before removing the screws. After repair, test the electronic siren and speaker system to ensure that it is operating properly. -11- C. Replacement of Output Transistors. CAUTION Before reinstalling the repaired PA4000U, make certain that the speaker is not defective. 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. D. Testing. 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. Federal recommends that both output transistors be replaced should only one device prove to be defective. This practice will insure long periods of service between failures. When installing new output transistors, insure that the Sil-Pad insulators are installed between the heat sink and transistors. After servicing is complete, perform a test of all functions to ensure siren is operating properly. -12- 5-3. REPLACEMENT PARTS LIST. Reference Designation Q106, Q109 F1 Description Part Number Transistor, TIP35C, NPN, Power Fuse, 10A, 32V, Automotive Insulator (Q106, Q109) Amplifier Power Circuit Board (with parts installed) Amplifier Logic Circuit Board (with parts installed) Chassis Cover Amplifier Assembly Accessory Kit Microphone, Optional Microphone Extension Cable, 15' Output Transformer -13- 125B437 148A142A-05 235A150 2005002-01 2005001-01 85361107-01 85361103 85361108-03 85361109-03 MNCT-SB RMK 120258 255297B REV. B 701 Printed in U.S.A.
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