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SECTION VI & VII SIREN/ PA SYSTEMS

 Installing Models 280K & 480K (cont.)

Page 8

FOOT SWITCH

1. A foot switch may be used in addition to or in place

of  the horn ring for siren controls.

2. Install light-duty (1-3 amp) foot switch. Using 18ga.

(minimum) wire connect one terminal to ground (-) or

battery (+), whichever is most convenient.

3. Connect other terminal to “foot switch” pigtail wire

in 12-pin control connector.

SECTION VII - WARNING LIGHTS

NUMBERED WIRES

1. The 12-pin connector of each model contains

numbered pigtail which can be used for controlling

warning lights .

2. Numbers stamped on insulation correspond to

Master Switch position that supply power (+12V).

WIRE SIZES

1. Proper warning light operation and protection

against fires can be assured only when adequate

wire size is used for the primary system as well

as for warning lights.

SUGGESTED CONNECTIONS

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,

and are encouraged to experiment with other connections
that could better suit your requirements.

Model 280

 - One Wire: 3

Use wire for controlling lights.

Model 480 

- Five Wires: 1, 1-2, 1-2-3, 2-3, and 3.

Use 1-2-3 for rear lights or lights of secondary

importance; 2-3 for front lights or lights of greater

importance; 3 for additional lights.

CURRENT LIMITS

1. 

Model 280

: 15A Total. Limit of wire : 15A.

2. 

Model 480

: 60A Total. Limit each wire:

1/15  amperes

1-2/15  amperes

1-2-3/20 amperes

2-3/20 amperes

3/20 amperes

HIGHER CURRENT CAPACITY

1. Higher currents may be achieved by using a

numbered wire to operate a heavy-duty relay

or solenoid. 30 ampere continuous-duty relay

and 100 ampere solenoids are available from

automotive distributors. They should be rated

for continuous duty.

See drawing below for connections.

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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