NorthStar Navigation 491 installation manual Section Three Installing

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SECTION THREE — Installing the 491

Safety considerations

WARNING!

Be sure to turn the power off before starting the installation. Further, it is highly recommended that you keep the power off while you’re performing the installation. If power is left on or turned on during the installation, then fire, electrical shock, or other serious injury may occur.

Be sure to ground the equipment to prevent electrical shock and mutual interference.

Be sure that the voltage of the power supply is between 10 and 36 volts DC. Connecting to the wrong power supply can result in fire or damage to equipment.

Be sure to use a 3-amp fuse. Using the incorrect fuse can result in fire or damage to the 491.

CAUTION!

Keep the following safe compass distances from the 491:

 

1.0 m standard, 0.8 m steering.

 

 

CAUTION!

Be sure that the 491 doesn’t interfere with any of the

 

on-board systems. Check all other systems to ensure that

 

their performance doesn’t degrade when the 491 is turned

 

on.

 

If the vessel is out of the water when the echo sounder is

 

turned on, the transducer may be damaged.

 

 

 

 

CAUTION!

Do not open the 491. There are no serviceable parts inside.

 

Unauthorized tampering with the unit will automatically void

 

the warranty.

 

 

CAUTION!

Do not mount the 491 in the bilge. It is not designed to resist heavy exposure to water and chemicals.

491 INSTALLATION MANUAL Revision A

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Contents Echo Sounder Installation Manual Page Table of Contents Page Section ONE Introduction Welcome to the NorthstarWho should read this manual Scope of this manual Installation considerations Safety considerations Section TWO Installing the transducerAirmar transducer elements Northstar-recommended transducersDo not mount the transducer Choosing a mounting locationHull thickness limits LWL Installing the transducerLWL Using anti-fouling paintDetail Cleaning a transducerPage Section Three Installing Section Three Installing Installation Manual Revision a Echo sounder system components with the Northstar 961/962 System components190 dia 360 dia MountingConnecting the 491 to the 961/962 WiringInterface cable connection from 961/962 to Cable connection between the 961/962Connecting the 491 to the 957/958 491-to-transducer connector pin wiring Connecting the 491 to a transducerInitial checkout Turning the 491 onFor the 961/962 For the 957/958/6000i Installation test checklistSetting up the echo sounder Turning the 491 offStatus LED Section Four Troubleshooting and servicing961/962 echo sounder system troubleshooting 957/958/6000i echo sounder system troubleshooting Contacting Northstar Getting technical supportHearing from you Ordering replacement parts ServicingReturning a 491 for service 491 technical specifications Appendix a Technical specificationsON/OFF Cavitation Deadrise Echo sounder Fairing block Transducer GlossaryGlossary Installation Manual Revision a Index 491 Index Index Installation Manual Revision a