Simrad SU90, Harbour Acceptance Test

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409977/B
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b Make sure that enough slack has been provided on each cable to allow for
maintenance and replacement.
c Make sure that the transducer cables can move freely when the transducer is
lowered and hoisted.
d Repeat the inspection of the transducer cables when the SU90 is turned on and
put to operational use.
7 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.
8 Make sure that there are no corrosive attacks on the hull unit, mounting flange,
installation trunk, support brackets or other parts of the installation.
Result
Requirements Results
The hull unit is correctly installed with easy access for maintenance and
replacement of parts.
The compartment in which the hull unit is installed ("sonar room") is clean
and dry.
All cables are properly mounted with enough slack.
The transducer cables can move freely when the transducer is lowered
and hoisted.
The welds and mechanical brackets that support the gantry are strong
enough to hold the hull unit securely in place under all operating conditions.
The welds and brackets have been painted with the correct preservation
medium to prevent corrosion.
There are no corrosive attacks.
Date and signature:
Visual inspection