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SECTION I - BASIC SYSTEM

Model 80K

USED WITH ALL MODELS

Containing electronic components for generating

sounds, the Model 80K amplifier is the basic part

of the siren and common to all models described in

this Manual. It will be found in the same cabinet

with it’s controls or in a separate cabinet remote

from it’s controls.
External Components Include:

a) Park Kill Wire- deactivates siren when

grounded.

b) Power Transistors (Rear) - Electrically

“hot” during Siren/P.A. operation. Contact

with metal objects will destroy them.

c) Fuse (Rear) - In unlikely event of failure,

do not overfuse.

PRECAUTIONS

1. Although the 80K has an extremely wide operating

temperature range (-40F to + 185F), underhood

installation where temperatures exceed 230F is not

advised.

2. Cabinet is not waterproof.

BLOW-OUT PROOF TRANSISTOR PROTECTION

1. Output transistors, blown out in normal sirens by

failures of the siren speaker or its wiring are protected

in the Unitrol 80K by automatic circuitry.

a) Short-circuited speaker or wiring stops

siren sounds.  A soft “popping” noise from

the speaker or amplifier will occur 60 times

per minute.

b) Blown-out speaker (open coil) or

disconnected speaker wire causes amplifier

to emit siren sounds from amplifier but not

from speaker.

c) Primary input voltage above 16Vdc will

cause shutdown of tone generating stages. No

sounds will be emitted by the amplifier or siren

speaker.

2. In all instances, amplifier operation will automatically

resume when the external defect is repaired.

ASSEMBLY METHODS

1. Amplifier can be used with control units as

follows:

a)  Remote - Amplifier is installed

remotely from control unit and

connected by a 4 foot or 15 foot

cable.

b) Single-Unit - Amplifier / control

unit are plugged together and

housed in one cabinet.

Page 1

Summary of Contents for Unitrol 280 Series

Page 1: ...AN 80K REV 14 FEB 03 80K AMPLIFIER Sirens Sirens with P A Sirens with P A and Switching INSTALLATION OPERATION FS UNITROL 1108 RAYMOND WAY ANAHEIM CA 92801 714 871 3336 Fax 714 871 3418 WWW UNITROL CO...

Page 2: ...ions Section VIII pg 9 P A Kit Installation Section IV pg 4 Model183K Standard Optional Features Section IV pg 5 Siren Warning Light Control Section IV pg 5 Rear Connections Section IV pg 5 Horn Ring...

Page 3: ...W OUTPROOFTRANSISTORPROTECTION 1 Output transistors blown out in normal sirens by failures of the siren speaker or its wiring are protected in the Unitrol 80K by automatic circuitry a Short circuited...

Page 4: ...hing Kawasaki wire colors with amplifier harness wires AIRHORN 1 12V applied to the amplifier s AIR HORN wire 3 pin power connector operates the air horn 12V can be supplied by a separate switch or th...

Page 5: ...o match horn button polarity Connect other side of switch to terminal 9 OptionalConnectionsorEquipmentcaninclude a AIR HORN See item 3 below b Microphone radio P A See Section V c Intrusion Alarm See...

Page 6: ...de by pressing the microphone button and talking Siren sounds are stopped until mic button is released INSTALLATION 1 Locate area for jack installation Allow 1 diameter clearance space for back portio...

Page 7: ...ition 1 2 3 turn on warning lights Position 3 turns on the siren and horn ring controls The toggle switch controls the siren s mode of operation during slide switch position 3 OFF No Siren MAN Allows...

Page 8: ...ontrols siren as follows During MAN Siren rises and falls only as horn ring is manually pressed and released During WAIL Horn ring activates 5 second Yelp During HI LO Horn ring activates 5 second Het...

Page 9: ...ntain blades audio connections will be established when radio cable is plugged into radio head 2 Radio Control If radio power control is desired locate the radio s transmit and receive control wires a...

Page 10: ...for warning lights SUGGESTEDCONNECTIONS 1 Since there are no uniform lighting arrangements there are no set rules for connecting wires Instructions appearing below are only suggestions You may prefer...

Page 11: ...is undesirable the positive output may be used to operate siren sounds or the air horn Page 9 c Connect one terminal either one of system on off switch to desired pin in amplifier 12 pin connector see...

Page 12: ...switch on bottom of amplifier chassis to match power rating of speakers to be used 3 Install amplifiers with 4 inches maximum between cabinets PRELIMINARYCONNECTIONS 1 Interconnect AIR HORN wires fro...

Page 13: ...g 2 Set slide switch on bottom of amplifier chassis to match power rating of speakers to be used 3 Install amplifier with 4 inches maximum between cabinets Page 11 PRELIMINARYCONNECTIONS 1 Interconnec...

Page 14: ...watts by vehicle voltage 13 volts nominal The result will be amperes 5 Motors Relays Most motors used in warning light bars draw 1 ampere or less Most relays draw 3 amperes or less 6 Keep in mind that...

Page 15: ...r on which unauthorized repairs or modifications have been made nor does it cover units that have been abused or used beyond limits stated in specifications FIVE YEARWARRANTY LIMITATIONS TECHNICAL SUP...

Page 16: ...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 ef...

Page 17: ...age rating In order for the electronic siren to function properly the ground connection must be made to a solid chassis component and not to an insulated point Page 15 Sound output will be severely re...

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