Visual inspection of the display
A visual inspection of the MS70 display is required to verify that the unit has not been physically damaged during the installation.
Prerequisites
The MS70 is installed as specified in the MS70 Installation manual. You need the following equipment:
•  Multimeter
Context
This test procedure is only applicable when the display is provided by Kongsberg Maritime as a part of the MS70 delivery.
Observe the installation shipyard’s procedures for workmanship, installation of physical units, and installation and termination of cables.
Procedure
1 Verify that the display is installed in the correct location, and that it is suitably orientated with respect to ambient light conditions and reflections.
2 Verify 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.
3 Verify that the unit has been identified with the relevant product label(s), and that one label includes the registration and serial numbers.
4 Check the physical installation of the unit.
a Verify that the structure to which the display is fastened is substantial enough to hold the unit securely under all operating conditions.
b If the display is secured to a table or shelf, check that it is bolted or welded securely to the deck and/or bulkhead.
c If the unit is installed inside a rack or in a closed compartment, check that ample ventilation is provided to avoid overheating.
d Verify that ample space is provided around the unit to allow for maintenance and replacement of parts.
e Check that the bolts, screws or studs holding the unit are of the correct size.
f Check that the correct flat and shake-proof washers have been used.
g Check that all nuts have been tightened properly.
h Check that all welds and brackets have been painted with the correct preservation medium to prevent corrosion.
5 Check that the unit is firmly connected to vessel ground.
a Check that the unit is securely connected to the vessel 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 Check the cables.
a Check that all cables leading to the unit have been properly mounted and secured.
b Verify that enough slack has been provided on the cables to allow maintenance and replacement.