Prerequisites
Neither tools nor instruments are required. You will however need a commercially available mild detergent and a lint free cloth.
Two persons are needed to do the task.
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One person must stay on the bridge in order to operate the ST90 system. |
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One person must stay in the sonar room to make sure that the ST90 system starts, and that the hull unit works properly. |
Proper oral communication must exist between the bridge and the sonar room.
The steps marked [Bridge] are done on the bridge.
Procedure
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1 |
Make sure that the hull unit is kept clean and dry. |
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2 |
Make sure that the unit is not exposed to excessive dust and vibrations. |
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Make sure that there are no corrosive attacks on the hull unit, mounting flange, installation trunk, support brackets or other
parts of the installation. |
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Remove dust and salt water residue with a soft cloth moistened in fresh water. Use a mild detergent.
NoteDo not use strong solvents.
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[Bridge]: Make sure that you have sufficient water depth below the keel before you lower the transducer. |
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[Bridge]: Lower the transducer to its bottom position. |
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Make sure that the transducer can be lowered and hoisted without complications or obstacles. |
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Make sure that the transducer cables can move freely when the transducer is lowered and hoisted. |
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[Bridge]: Hoist the transducer to its upper position. |