Seakeeper 26000 GYRO User manual

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Rev2July2013
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INSTALLATIONMANUAL
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MODEL26000GYRO

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INSTALLATION
MANUAL
Product:Document#:Rev:
MODEL26000GYRO901832
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MODEL26000GYRO
INSTALLATIONMANUAL
JULY2013
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Contents:
Section1–MechanicalInstallation&PC‐120Guide
Section2–ElectricalInstallation&PowerConfigurationsfor
SeakeeperGyroStabilizers
Section3–CoolingInstallation
Section4–Startup
Section5–InstallationChecklistandRequiredSupplies
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44425PECANCOURT,SUITE151
CALIFORNIA,MARYLAND,20619,U.S.A
PHONE:410‐326‐1590
FAX:410‐326‐1199
E‐MAIL:[email protected]

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INSTALLATION
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MODEL26000GYRO9018321of23
Section1:MECHANICALINSTALLATION
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1.0Introduction
Thisdocumentisintendedtogivedetailsandguidancetoaboatbuilderorequipmentinstallertoinstallthe
Seakeeper,Inc.Model26000StabilizingGyro.
TherearetwomethodsofinstallingtheModel26000gyro:
1) SaddleInstallation–thisisusedonfiberglassconstructedhulls.
2) Bolt‐InInstallation–thisisusedformetalconstructedhulls.
Itisassumedthattheinstallerisfamiliarwithbondingusinghighstrengthadhesivesorboltingandhas
performedstructuralanalysistoassurethestructuretowhichthegyromountscanproperlytransfertheloads
thegyrocreatesintothemainhullstructure.Iftheinstallerhasanydoubtabouttheabilityofthestructureto
transferthegyroloadstothehullthenheshouldcontactalicensednavalarchitectormarineengineertodoa
structuralanalysis.
Theinstallershouldreviewthefollowinglistofreferencedrawingstoensuretheinstallationprocedureisfully
understood.
ReferenceDrawings
90088Model21000/21000A/26000GyroSaddleInstallationFixtureKit
90089Model21000/21000A/26000GyroBolt‐InInstallationFixtureKit
90155Model26000GyroHardwareScopeofSupply
90137Model26000GyroInstallationDetailsUsingSaddleMethod
90138Model26000GyroInstallationDetailsUsingBolt‐InMethod
90174Model26000GyroCableBlockDiagram,SingleStation
90175Model26000GyroCableBlockDiagram,DualStation
90202Model26000GyroCoolingSchematic
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MODEL26000GYRO9018322of23
Section1:MECHANICALINSTALLATION
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FIGURE1–MODEL26000GYRO
1.1Precautions
Gyroflywheelissupportedbyprecisionbearings.Makecertainwhileunpackingandliftinggyroassembly
toNOTdroporimpartmechanicalshockasdamagetobearingscouldresult.
Whilehandling/installinggyroassembly,protectexposedhydraulicbrakecylinderrods(SeeFigure1
above)fromscratchesordamageasthiscouldleadtoprematuresealfailureandoilleaks.
Whilehandling/installinggyroassembly,donotallowelectricalfittingsthatexitbottomofgyroenclosure
tocomeincontactwithanysurfaceorobjectasthiscoulddamagethefittingsandpotentiallyaffectthe
vacuumintegrityoftheenclosure.
Exercisecaretoprotectgyropaintedfinishasdamagetofinishcouldleadtoearlyappearancedegradation
ofinstalledgyro.
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MODEL26000GYRO9018323of23
Section1:MECHANICALINSTALLATION
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1.2SelectionofGyroInstallationLocation
Selectionofmountinglocationofgyroshouldconsiderthefollowingdesirablefeatures:
Thegyromustbeinstalledaftofamidshipstominimizehighacceleration
loadingsduetohull/waveimpactsduringoperationathighspeedorinlarge
waves.
Removableoverheadaccessorsufficientclearanceforremoval/re‐installationofgyroforoverhaulin
futureyears.
Clearanceforreplacementofgimbalanglesensorongyroportside(seeFigure2below).
Clearanceforfilling/purgingbrakehydraulicoil(seeFigure2below).
Clearanceforfillingwater/glycolcoolingcircuit(seeFigure2below).
Clearanceforreplacementofbrakehydrauliccylinders(seeFigure2below).
Spaceforrecommendedsound/safetyenclosure.
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FIGURE2–INSTALLEDGYROCLEARANCECONSIDERATIONS

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SafetyEnclosure
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Thereisalargetorqueaboutthegimbalaxiswhenthegyroisprecessing.Therefore,thegyromustbe
housedinanenclosureoracompartmentorinstalledinacagesopersonnelorgearcannotcomeinto
contactwiththegyrowhileitisprecessing.
Thegyroshouldbetreatedwiththesamerespectonegivesahighspeedrotatingpropellershaftor
engineshaft.Thegyromustbeinstalledsocontactisnotpossiblewhiletheflywheelisspinning.
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Noise/Soundproofing/Ventilation
Gyronoisehasbeenmeasuredundersteadystateconditions(nowaveload)inSeakeeper'stestfacility.Thesteady
statenoiseistypicallyintherangeof72‐74dBunweighted.Asthefrequenciesemittingthehighestsound
pressuresarelow(likeothermarinemachinery),itisrecommendedthatthegyrobeinstalledinacageina
machineryspacethatisalreadytreatedwithsoundproofing.
Ifthegyrostabilizerhastobelocatedoutsideamachineryspace,itshouldbeinstalledinasounddamping
enclosuretopreventlowfrequencynoise(approximately133Hz)fromenteringthelivingspaces.Inthiscase,the
enclosurecanbeopenatthebottombetweenthehullstringers.Asmallexhaustfanshouldbeinstalledinthetop
oftheenclosuretopullambientairthrutheenclosuresotheairintheenclosuredoesnotheatup.Thiswillensure
thattheownerdoesnotgetnuisanceshutdownsduetotheMotorDriveandBearingtemperaturealarmsinsome
operatingconditions(highambientairtemperature,highseawatertemperature,highseastate,etc).
Thefanshoulddeliver35cuft/min(60cum/hr)whichshouldexchangetheairintheenclosureaboutonceper
minute.Small,massproduced,axialandcentrifugalcoolingfansareavailablewitheitherACorDCinputpower,
ballbearings,extendedtemperaturerange,lownoiseratings,longMTBF,marinized,etc. Locatetheinletatthe
bottomoftheenclosureandmountthefanatthetopasanexhaustfan.Acentrifugalfanmaybebesttominimize
outletarea.Thefanpowerrequirementswouldtypicallybeintherangeof20watts.WhenusingaDCfan,wireit
tothesamebreakerthatprovidespowertotheGyroControlJunctionBoxsothefanturnsonandoffatthesame
timeasthecontroller.
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MODEL26000GYRO9018325of23
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1.3SelectionofInstallationMethod
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TheModel26000gyrocanbeaffixedtothehullstructureusingtwomethods1)Usesaddleinstallationor2)bolt‐
ininstallation.Seefiguresbelow.
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Option1wouldbemostcommonlyusedonahullconstructedofglassreinforcedplastic(GRP)orfiberglass.For
thisoption,four16inch(406mm)longby8inch((203mm)deepsaddlesarebondedtoproperlyspacedand
preparedstructuralmembersthatareanintegralpartofthehullstructure.Seakeeperrecommendsusinga
structuraladhesivewithalapshearstrengthof2000psi(13.8MPa)orgreater.Carefulconsiderationshouldbe

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exercisedbytheinstallerwhileselectingtheappropriateadhesive.Compatibilitywiththegyro’scastaluminum
A356‐T6saddles,hullstructureandpotlifearethreeimportantfactorstoconsider.
Option2wouldbeappliedonahullorgyrosupportstructureconstructedofsteeloraluminum.Thefourisolation
mountswouldfastendirectlytohullstructureusing32xM16or5/8inchfasteners.Dependingonaccessaround
theboat’sstructureblindthreadedholesorthru‐boltingcanbeutilized.
1.4UnpackingCrate
1) ReferenceSeakeeperDrawingNo.90155,Model26000GyroHardwareScopeofSupplyforitemsthatship
withthegyro.
2) ReferenceSeakeeperDocumentNo.90203,Model26000CrateUnpackingInstructionsforinformationon
disassemblingcrate.
3) Removeanglesusedforinstallationfixtures–takecarenottodamageasanydistortionofanglescould
resultinfoundationalignmentproblems.
4) Removesaddles(ifapplicable)electricalcomponents,cables,andmisc.itemscontainedinboxesandset
aside.
5) Remove16xlagboltsthatfastengyrotocratebase.
6) Attachspreaderbarorsimilardevicetothetwoliftingeyeslocatedonthetopofthegyroenclosure.Any
sideloadingontheliftingeyesbyusingshortstrapsorchainsshouldbeavoided.Seefigure3below.Do
notrestspreaderbarontopofgyrowithoutusingpaddingtoprotectpaint.
7) Gyroisnowreadytobeliftedfromcrate.Takecarewhileliftingnottodamageanycablesorhosesthatare
attachedtotheassembly.Whensuspended,gyroshouldbealmostleveltomakeinstallationeasier.
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FIGURE3–LIFTINGARRANGEMENT
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