Simrad ST90 - Installing the Hydraulic Units

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5Lubricatethethreadswithahighgradecommercialanti-seizelubricant.
6Orientatethetransducerdocksothatitpointsinthedesireddirection.
7Lowerthetransducerdockcarefullyontothegatevalvewhiletighteningthenuts.
8Disconnectandremovethetacklesfromthetransducerdock.
9Tightenthenutstotorque472Nm.
10Dependingonmechanicalsupportprovidedbytheexistingdecksand/orbulkheads,
design,manufactureaninstalladditionalmechanicalsupportforthetransducer
dock.
Thenecessityofsuchmechanicalsupportmustbedecidedbyanavalarchitect.
Relatedtopics
InstallingtheoptionalgatevalveDN500,page85
Gatevalveinstallationoverview,page86
Installingthehydraulicunits
Ifahydraulicsystemhasbeenchosentocontrolthegatevalveoperation,additional
unitsmustbeinstalled.
Prerequisites
Youmustbeequippedwithastandardsetoftools.Thistoolsetmustcomprisethe
normaltoolsformechanicaltasks.Thisincludesdifferentscrewdrivertypes,pliers,
adjustablespanners,etc.Eachtoolmustbeprovidedinvarioussizes.Werecommend
thatalltoolsaredemagnetizedtoprotectyourequipment.Dependingonthetasksat
hand,additionaltoolsmayberequired.
Context
Onamanuallyoperatedgatevalve,awheelisusedtoopenandclosethevalve.The
wheelisttedongatevalve,whichmeansthatyouneedtogodowntothebottomofthe
vesseltooperateit.Onahydraulicoperatedgatevalve,thecontrolwheelisreplaced
withahydraulicmotor.Thehydraulicsystemcomprisesthefollowingunits:
•HydraulicPowerPack
TheHydraulicPowerPackprovidestheoilpressureforthehydraulicmotoronthe
gatevalve.
•GateV alveControlUnit
TheGateValveControlUnitprovideslocalcontroloftheHydraulicPowerPack.It
containscontrollerstooperatetheentiregatevalvesystem.
InstallingtheoptionalgatevalveDN500