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
CAUTION! | Keep the following safe compass distances from the 491: |
| 1.0 m standard, 0.8 m steering. |
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CAUTION! | Be sure that the 491 doesn’t interfere with any of the |
| |
| 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. |
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CAUTION! | Do not open the 491. There are no serviceable parts inside. |
| Unauthorized tampering with the unit will automatically void |
| the warranty. |
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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 | PAGE 11 |
