Kongsberg Simrad NISE 3900E, Руководство по установке

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110-0007509/A
Visual inspection of the Processor Unit
A visual inspection of the Processor Unit is required to verify that the unit has not
been physically damaged during the installation. Is is also necessary to verify that the
computer has been installed correctly.
Prerequisites
The echo sounder system hardware units are installed as specified in this manual. The
echo sounder system is turned off. You need the following equipment:
• Multimeter
Procedure
1 Make sure that the computer is installed in the correct location, and that it is suitably
oriented for replacement and cabling.
2 Make sure that the physical installation of the unit has been completed.
a Make sure that you have free access to rear and front side connectors on the
computer.
b Make sure that ample ventilation is provided to avoid overheating.
c Make sure that ample space is provided around the unit to allow for
maintenance and replacement of parts.
d Make sure that the bolts, screws or studs that have been used are all of the
correct size.
e Make sure that the correct flat and shake-proof washers have been used.
f Make sure that all the nuts have been tightened properly.
g If applicable: Make sure that all welds and brackets have been painted with the
correct preservation medium to prevent corrosion.
3 Make sure that the unit is not physically damaged, and that the surfaces and
paint-work are clean without dents or scratches.
The physical handling during the installation may have caused some minor
scratches to the surfaces or paint-work. This can be accepted. However, if rough
handling has caused serious damage, this must be recorded with a written statement
and necessary photos, so that corrective actions can be made.
4 Make sure that the unit is firmly connected to ship's ground.
a Make sure that the unit is securely connected to the ship's ground with an
earthing strap. The strap must be in addition to any incidental electrical contact
made by the mounting lugs on the unit.
b Use a standard multimeter to check that the resistance between the unit and the
ship's ground is approximately 0 (zero) Ω.
5 Make sure that cable installation has been completed.
Simrad Echo sounder system Installation Manual