Simrad ST90 - Bridge Steps

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442729/A
Note
Properoralcommunicationmustexistbetweenthebridgeandthesonarroom.Inthe
eventofproblemsormalfunctions:
1LocatetheMotorProtectingSwitch(S301).
2SettheswitchtopositionOFF .
Topics
Bridgesteps,page30
Sonarroomsteps,page32
Bridgesteps
ThehullunitprovidedwiththeST90isdesignedtolowerthetransducerdownbelow
theship’shullwhentheST90shallbeused.ThisisakeyfunctionalityoftheST90.
Itisveryimportantthatthehoist/lowerfunctionistestedbeforetheST90isputto
operationaluse.Inordertotestthelowerandhoistfunctionalityofthehullunit,two
tasksmustbedonesimultaneously.Thesetasksaredoneonthebridge.
Prerequisites
TheST90isinstalledasspeciedintheST90Installationmanual.TheST90systemis
turnedonandoperatesnormally.Neithertoolsnorinstrumentsarerequired.
Context
Certainstepsinthetwoproceduresarelocationspecic.Thestepsmarked[Sonar
room]aredoneinthesonarroom.
Procedure
1Makesurethatyouhavesufcientwaterdepthbelowthekeelbeforeyoulower
thetransducer.
2[Sonarroom]LocatetheMotorProtectingSwitch(S301).Settheswitchtoposition
ON.
3[Sonarroom]LocatetheHoist/LowerSwitch(S302).Settheswitchtoposition
REMOTE.
4Lowerthetransducertoitsmiddleposition.
SimradST90HarbourAcceptanceTest