Simrad ST90 - Page 350

348
442703/B
12PowerdowntheST90.
IfthetransducerisloweredwhenyouturnofftheST90,itisautomaticallyretracted
toitsupperposition.TheTransceiverUnitisturnedoff.TheST90programcloses
down.
13Notifythesonarroomthatthetestisnished.
Result
Requirements
Results
Theloweringandhoistingfunctionality-asseenfromthebridge-is
operational.
Dateandsignature:
Relatedtopics
Settingtoworksummary,page242
TestingtheST90operationalfunctionality,page345
Checkingthetransducerlowerandhoistfunctionality-Sonarroom
steps
ThehullunitprovidedwiththeST90isdesignedtolowerthetransducerdownbelow
theship’shullwhentheST90shallbeused.ThisisakeyfunctionalityoftheST90.
Itisveryimportantthatthehoist/lowerfunctionistestedbeforetheST90isputto
operationaluse.Inordertotestthelowerandhoistfunctionalityofthehullunit,two
tasksmustbedonesimultaneously.Thesetasksaredoneinthesonarroom.
Prerequisites
TheST90isinstalledasspeciedinthismanual.TheST90isturnedon,anditis
workingnormally.Neithertoolsnorinstrumentsarerequired.
Context
Certainstepsinthetwoproceduresarelocationspecic.Thestepsmarked[Bridge]
aredoneonthebridge.
Note
Intheeventofproblemsormalfunctions:
1LocatetheMotorProtectingSwitch(S301).
2SettheswitchtopositionOFF .
SimradST90InstallationManual