Simrad ST90 - Page 25

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bMakesurethatenoughslackhasbeenprovidedoneachcabletoallowfor
maintenanceandreplacement.
cMakesurethatthetransducercablescanmovefreelywhenthetransduceris
loweredandhoisted.
dRepeattheinspectionofthetransducercableswhentheST90isturnedonand
puttooperationaluse.
7Makesurethattheunitisrmlyconnectedtoship'sground.
aMakesurethattheunitissecurelyconnectedtotheship'sgroundwithan
earthingstrap.Thestrapmustbeinadditiontoanyincidentalelectricalcontact
madebythemountinglugsontheunit.
bUseastandardmultimetertocheckthattheresistancebetweentheunitandthe
ship'sgroundisapproximately0(zero)Ω.
8Makesurethattherearenocorrosiveattacksonthehullunit,mountingange,
installationtrunk,supportbracketsorotherpartsoftheinstallation.
Result
Requirements
Results
Thehullunitiscorrectlyinstalledwitheasyaccessformaintenanceand
replacementofparts.
Thecompartmentinwhichthehullunitisinstalled("sonarroom")isclean
anddry.
Allcablesareproperlymountedwithenoughslack.
Thetransducercablescanmovefreelywhenthetransducerislowered
andhoisted.
Theweldsandmechanicalbracketsthatsupportthegantryarestrong
enoughtoholdthehullunitsecurelyinplaceunderalloperatingconditions.
Theweldsandbracketshavebeenpaintedwiththecorrectpreservation
mediumtopreventcorrosion.
Therearenocorrosiveattacks.
Dateandsignature:
Visualinspection