Simrad SU90, Harbour Acceptance Test

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409977/B
Visual inspection of the hull unit
A visual inspection of the hull unit is required to make sure that the unit has not been
physically damaged during the installation. It is also important to check that the unit has
been installed correctly.
Prerequisites
The SU90 has been set up with its hardware units connected as specified in the SU90
Installation manual . The SU90 is turned off. You need the following equipment:
• Multimeter
Procedure
1 Make sure that the unit’s serial number has been recorded in the list of hardware
items.
2 Make sure that the hull unit is installed in the correct location, and that it is suitably
oriented for easy maintenance and replacement of parts.
3 Make sure that the unit is not physically damaged, and that the paint-work is clean
without dents or scratches.
The physical handling of the unit during the installation may have caused some
minor scratches to the paint-work. This can be accepted. However, if rough
handling has caused serious damage to the unit, this must be recorded with a written
statement and necessary photos, so that corrective actions can be made.
4 Make sure that the unit has been identified with the relevant product label(s), and
that one label includes the part and serial numbers.
5 Make sure that the physical installation of the unit has been completed.
a Make sure that the welds and brackets used to support the hull unit are
substantial enough to hold the unit securely under all operating conditions.
b Make sure that the compartment ("sonar room") in which the hull unit is
mounted is clean and dry.
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 holding the unit are of the correct size.
e Make sure that the correct flat and shake-proof washers have been used.
f Make sure that all nuts have been tightened properly.
g Make sure that all welds and brackets have been painted with the correct
preservation medium to prevent corrosion.
6 Make sure that cable installation has been completed.
a Make sure that all cables leading to and from the unit have been properly
mounted and secured.
Simrad SU90 Harbour Acceptance Test