Kongsberg Simrad SU90 Manual page 25

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 Controller is installed in the correct location, and that
it is suitably oriented for easy maintenance and replacement of parts.
3 Make sure that the physical installation of the unit has been completed.
a Make sure that the cabinet door can be fully opened for unrestricted access.
b Make sure that ample space is provided around the unit to allow for
maintenance and replacement of parts.
c Make sure that the bolts, screws or studs that have been used are all of the
correct size.
d Make sure that the correct flat and shake-proof washers have been used.
e Make sure that all the nuts have been tightened properly.
f Make sure that the welds and support brackets to which the unit is fastened are
substantial enough to hold the it securely under all operating conditions.
g Make sure that all welds and brackets have been painted with the correct
preservation medium to prevent corrosion.
4 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.
5 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.
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.
b Make sure that enough slack has been provided on each cable to allow for
maintenance and replacement.
7 Make sure that the unit has been identified with the relevant product label(s), and
that one label includes the part and serial numbers.
409977/C
Test procedures
25