Preparing the Transceiver Unit installation
The MS70 Transceiver Unit is housed in a 19 inch instrument rack. Easy access to the front and rear part of the rack is essential, as this allows for easy replacement of parts. In order to reduce the loss in the transducer cables, the Transceiver Unit is physically located as close as possible to the transducer.
Prerequisites
You must be equipped with a standard set of tools. This tool set must comprise the normal tools for mechanical tasks, such as different screwdriver types, pliers, adjustable spanners and wrenches. Each tool must be provided in various sizes. We recommend that all tools are demagnetized to protect your equipment. Depending on the tasks at hand, additional tools may be required. Observe the relevant rules and regulations related to welding. The quality of the welding is critical to the safety of the vessel. Welding must only be done by a certified welder.
If required, all documents provided by the shipyard for the physical installation of the MS70 must be approved by the vessel’s national registry and corresponding maritime authority and/or classification society. Such approval must be obtained before the installation can begin. The shipowner and shipyard doing the installation are responsible for obtaining and paying for such approval.
Note
Observe the installation principles.
Context
The Transceiver Unit is designed to be installed next to a bulkhead. The cabinet is fitted with shock absorbers at the bottom, and on the side.
The top shock absorbers are by default located on the left side of the cabinet. If required, they may be moved to the other side. If you do this, you may also wish to move the hinges on the cabinet doors. These are also by default located on the left side, but are easily moved to the right side.
All cables enter the Transceiver Unit through the bottom of the cabinet. Use U shaped steel profiles to add extra height. This allows room under the Transceiver Unit for transducer and interconnection cables. If necessary, you can use the space below the Transceiver Unit to install a cable tray for the transducer cables.
You may find it useful to design, manufacture and mount a bulkhead support bracket for the shock absorbers on the top of the cabinet.
Image
A U-shaped profiles
B Cable tray
C The grounding cable is a special braided wire that is physically connected to the cabinet.
D Bulkhead support bracket
E Adapter for ventilation duct
The Transceiver Unit must be connected to AC mains, and it must be properly grounded. The grounding cable is a special braided wire that is physically connected to the cabinet.
Note
Observe the limitations due to the cable lengths. The distance between the transducer and the Transceiver Unit is restricted by the length of the transducer cables. The distance from a power outlet is restricted by the length of the power cables. If required, you may need to move the power outlet, or replace the power cables with longer types.
Procedure
1 Prepare the location and the necessary tools.
Observe the outline dimensions drawing. The drawing is located in the Drawing file chapter in this manual. It can also be downloaded from our website.
2 Observe the installation requirements.
•  The position must be chosen to fit the available cable lengths between the Transceiver Unit and the other units it connects to.
•  Provide ample space around the unit to allow for inspection, maintenance and parts replacement.
Minimum space requirements:
–  Front: 100 cm
–  Rear: 60 cm
–  Below 10 cm (Below the shock absorbers)
•  Make sure that the space allows the unit door to be fully dismounted for unobstructed access to its internal parts.
•  Verify that the installation does not cause problems with existing cabling, ventilation ducts, piping etc. Check both sides of the bulkhead.
•  Make sure that enough space is made available for maintenance purposes.
•  Make sure that adequate ventilation is available to avoid overheating.
•  Ensure that the installation method allows for the physical vibration, movements and forces normally experienced on a vessel.
3 Verify that the chosen location meets the installation requirements.
4 Mount the "U" shaped profiles.
a Design, manufacture and mount the U-shaped steel profiles.
b Make sure that the profiles can withstand the full weight of the cabinet.
c Make the required mounting holes to accept the bottom frame (with shock absorbers).
d Position the profiles on the deck, and mount them using bolts or welds.
5 If relevant, mount the bulkhead support bracket.
a Design and manufacture the bulkhead bracket.
b Make the required mounting holes to accept the top shock absorbers.
c Position the brackets on the bulkhead, and mount them using bolts or welds.
6 Design, manufacture and mount a suitable cable tray that fits under the Transceiver Unit
Further requirements