Section three - installing the 491, Safety considerations, Section three — installing the 491 – NorthStar Navigation 491 User Manual

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491 INSTALLATION MANUAL Revision A

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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.

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