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M-485B Horn Signal Controller Instructions
2.) Move the switch to the center "OFF" position. The LED light on the switch should turn
off. The M-485B is now off and horn sounding should stop.
3.) Move the switch to the bottom "Stopped" position. The corresponding amber LED light
on the switch should illuminate, and the M-485B should immediately sound the horn for
2 long blasts (appx. 4 seconds each), and repeat every two minutes.
4.) While the M-485B is operating either "Stopped" or "Underway" codes, press the "At-Will"
horn button on the vessel. The horn should sound. If the "At-Will" button is the
Kahlenberg M-130 Horn Button, the horn should sound, AND the M-485B Controller
should stop the automated signal pattern currently in operation. The LEDs on the
switch should also begin flashing. The flashing indicates that the M-485A automated
signal pattern has been interrupted. To reset the M-485A, move the rocker switch to
the center "Off" position. If the "At-Will" button on the vessel is a standard single pole
switch, the horn should sound when it is depressed, but the automated signal code will
continue to sound the horn uninterrupted on the M-485B.
MAINTENANCE
The M-485B is a solid state unit and is not user serviceable. Contact Kahlenberg Industries for
any replacement parts that may be needed. Please have model number and serial number of
the unit available when contacting us for assistance.
STORAGE
If storing the M-485B for an extended period of time, store indoors at temperatures above 32
deg. F./0 deg. C., and poly bag and package package the items with silica desiccant packets to
protect from dust and excessive moisture.
Reference Documents:
Outline Dimensions, M-485B Horn Signal Controller
Parts List, M-485B Horn Signal Controller
Wiring Diagram, Installation with Air Horn and single pole
"At-Will" Button
Wiring Diagram, Installation with Air Horn and M-130 double pole
"At Will" Push Button
Wiring Diagram, Installation with Electric Horn and single pole
"At Will" Push Button
Wiring Diagram, Installation with Electric Horn and M-130 double
pole "At Will" Push Button
TROUBLESHOOTING
www.kahlenberg.com
Rev. 4/12/2022
Drawing 3-7575
Drawing 3-7576
Drawing 3-7584
Drawing 3-7577
Drawing 3-7597
Drawing 3-7582
Customer Support: 1-920-793-4507
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