Andrew ES73 User Manual

Andrew Corporation10500 West 153rd StreetOrland Park, IL U.S.A. 60462Telephone: 708-349-3300FAX (U.S.A.): 1-800-349-5444Internet: http://www.andrew.co

OverviewFoundationPreparation10Installation ProceduresThis section provides installation procedures for the 7.3-Meter Andrew Earth StationAntenna. The

A-325 TensioningStep 1Step 2Step 3Step 4Step 5Step 611During the installation process, there are several references to the A-325 hardware ten-sioning

Tripod GroundMount AssemblyAzimuth BeamAssemblyStep 1Step 2Step 312The three-point mount is an elevation-over-azimuth mount optimized for geostationar

Support LegsAssemblyStep 1Step 213Attach 201327A joint assembly to 201313A beam assembly as shown in Figure 5.Attach 200083 angles to 201313A beam ass

Step 3Step 414Raise 201313A beam assembly to upright position and attach 201315 supports to201327A joint assembly as shown in Figure 7.• Use 7/8 x 2-1

Step 5Step 615Attach 201314 supports to 201301/201302 rear pad assemblies and 201273 jointassembly as shown in Figures 9 and 10.• Use 7/8 x 2-1/4 in (

Panning FrameAssemblyStep 116Attach 201487 panning frame to 221384 azimuth pivot assembly as shown in Figures 11and 12. Note: Ensure pivot assembly re

Step 217Attach 221608 joint assemblies to panning frame as shown in Figures 13 and 14.• Use 7/8 x 2-1/4 in (57 mm) hardware• Insert bolts from panning

Step 3Step 4 18Attach 201316 support pairs to 221608 joint assemblies as shown in Figure 15.• Place supports back-to-back with edges out and flat of a

Step 5 Step 619Attach 201770 plate connecting 201484/201484-2 extension assembly to 201487 pan-ning frame as pictured in Figure 17.• Use 7/8 x 2-1/4 i

IntroductionHow to Use This ManualGetting StartedInstallationProceduresOperationPreventiveMaintenanceTable of Contents2Table of ContentsIntroduction.

Step 7Step 820Attach second 201488 outrigger plate to 201487 panning frame assembly as shown inFigure 19.• Use 7/8 x 2-1/4 in (57 mm) hardware• Insert

Step 921Installation ProceduresFigure 21Attach 301741 right tripod joint bracket and 301742 left tripod joint bracket to 221721elevation axis assembly

Step 10Step 1122Installation ProceduresAttach 300026 tripod channel legs to tripod joint brackets as shown in Figure 23.•Use 7/8 x 2-1/4 in (57 mm) bo

ElevationJackscrewAssemblyStep 1Step 223Installation ProceduresAttach 301771/301736 elevation jackscrew assembly to 201596 mounting plates asshown in

Step 3Step 424Installation ProceduresFigure 27Attach 301771/301736 elevation jackscrew to 301772 tripod tube weldment as shown inFigure 28.•Use 7/8 x

AzimuthJackscrewAssemblyStep 1Step 2Mount AssemblyStep 1Step 225Installation ProceduresInsert 221923/223180 azimuth jackscrew tube into 221738 azimuth

Step 3Step 426Installation ProceduresAttach rear pad assemblies to rear foundation pads as pictured in Figure 31.Figure 31Connect beam assembly using

Step 5Step 627Installation ProceduresFigure 32BApply RTV to flange surfaces and attach 221384 azimuth pivot assembly to 201327Ajoint assembly with 7/8

Step 7Step 8Step 928Installation ProceduresFigure 34Raise 221923/223180 azimuth jackscrew and attach 221738 pivot assembly to 201273joint assembly wit

Step 10Step 1129Installation ProceduresExtend jackscrew to meet outrigger assembly. Loosely attach outrigger plate to pinassembly in azimuth jackscrew

IntroductionLike all Andrew earth station antennas, the 7.3-Meter Earth Station Antenna provideshigh gain and exceptional pattern characteristics. The

Reflector/Subreflector/Feed AssemblyFeed/WaveguideAssemblyStep 1Step 230Installation ProceduresType A-325 hardware is utilized during the reflector at

Step 331Installation ProceduresAlign tabs on 77639 feed rotating tube assembly with corresponding tabs on drumassembly. Attach rotating tube to center

Step 4Step 5Step 632Installation ProceduresAttach 77874 feed supports between rotating tube tabs and corresponding drum tabs asshown in Figure 38. Ful

Step 733Installation ProceduresAttach 77646-2 feed horn mounting pipe to 201606/301808 feed horn assembly asshown in Figure 40.• Use 1/2 x 2-1/2 in (6

Step 834Installation ProceduresInstall circular waveguide assembly through 77639 rotating tube assembly and attachfeed horn/mounting pipe assembly to

Step 935Installation ProceduresFigure 42Rotate drum assembly into upright position. Level drum with shims until no side canbounce, as shown in Figure

Reflector/BackstructureAssemblyStep 136Installation ProceduresAttach back strut assemblies to lower drum ring brackets as shown in Figures 43 and44.•

Step 2Step 3Step 437Installation ProceduresRemove entire end of panel crate to allow easy access and careful removal of reflectorpanels.• When transpo

38Installation ProceduresFigure 47Center portionof Andrew“flash” logo

39Installation ProceduresStep 5Install back strut members to reflector segment tee section as shown in Figure 48. Useminimum torque to tighten hardwar

Proprietary DataInformation andAssistanceNoticeTechnicalAssistanceThe technical data contained herein is proprietary to Andrew Corporation. It is inte

Step 640Installation ProceduresRepeat Steps 4 and 5 to install second panel adjacent to panel segment 1 as shown inFigures 49. Install panel seam hard

Step 7Step 841Installation ProceduresInstall third panel segment (adjacent to first panel segment) according to Steps 4 thru 6and Figure 51.Figure 51C

Step 9Step 10Step 11Step 12Step 13Step 1442Installation ProceduresPrior to installing panels 15 and 16 station a man on top of the drum assembly enclo

Beginning with panel seam 1, fully tighten hardware attaching panels to upper drumassembly ring, reflector tee segment to back strut assembly, back st

44Installation ProceduresSubreflector StrutAssemblyStep 1Attach subreflector strut assemblies to 170147 quadrapod plates as shown in Figures56 and 57.

45Installation ProceduresFigure 57

Step 246Installation ProceduresAttach subreflector strut assemblies to opposing sides of 77943 apex bracket as shownin Figures 58 and 59.• Use 1/2 x 1

Step 3Step 4Step 547Installation ProceduresAttach subreflector ring to corresponding strut assembly plates as shown in Figure 60.Ensure subreflector r

Reflector toGround MountAssemblyStep 1Step 248Installation ProceduresAttach 5/8 in (16 mm) shackles to three lifting tabs as shown in Figure 62. Attac

49Installation ProceduresFigure 63Figure 64

OverviewContentThe scope of this manual is intended to provide station personnel with the base installa-tion, operation, and maintenance requirements

SubreflectorAssembly andAdjustmentStep 1Step 250Installation ProceduresInstall subreflector subassembly to subreflector ring by inserting studs on sub

Step 3Step 4Installation ProceduresFigure 67Repeat the adjustment procedure performed in Step 2, until all areas of the subreflectorare uniform. Adjus

Cross-AxisGrounding KitStep 152Installation ProceduresNote: Thoroughly clean exposed portions of grounding cables, unplated portion of uni-versal term

Refer to Figure 69. Attach lugs to universal terminals at each end of 46373 groundingcable as shown, using 5/16 by 1 inch (25 mm) bolts, flat washers

OverviewAcquiring ASatellite54OperationAfter you have completed the assembly of your antenna, you are now ready to becomeoperational. In order to oper

Step 1Step 2Step 3Step 4Step 5Step 655The following steps provide the procedure for acquiring a satellite.Begin by obtaining the correct Az/El pointin

Step 7Step 8Step 956Move the antenna in azimuth to obtain a null, then move ± in elevation to obtain a largepeak signal. If not, move the antenna in t

Step 1057With all 24 transponder signals of approximately equal amplitude appearing on thespectrum analyzer screen determine the specific antenna syst

SubreflectorAdjustment58OperationAfter the satellite has been acquired and testing has taken place with the spectrum analyzer,the subreflector may nee

OverviewGeneral CleaningElectrical Parts59Preventive MaintenanceThis section contains periodic preventive maintenance instructions for the 7.3-MeterEa

OverviewWarningsThe installation, operation, and maintenance of the 7.3-Meter Earth Station Antennarequires qualified and experienced personnel. Andre

Mechanical PartsInspectionLocalControl/MotorDrive Controller60scraper, stiff brush (bristle or wire in the case of rust or other corrosion), or cloth

Antenna 61pungent odor indicative of burning vanish denoting overheating or a total breakdown.• Check all terminal boards for broken or missing termin

62and minus direction from the local control/motor drive controller at least once everythree months during antenna down time. Check the mechanical lim

Drive SystemVoltage andCurrent Checks Step 1 Step 2 Step 3 63tain all electrical grounding connections (including cross-axis grounding straps) areinta

Step 4Step 5Step 6Step 7Step 8Step 964Turn the AZIMUTH EAST/WEST switch to either position and while the antenna is rotat-ing, carefully use a clamp o

Preservation ofComponent PartsAluminum PartsGalvanizedSurfacesLubrication65Remove all loose paint and corrosion by scraping, wire brushing, or using s

Jackscrews/MotorsGearMotor/Housing FillDrainRequirements66assembly and corresponding thrust pads. Securely replace access plugs in square tubeweldment

67Preventive MaintenanceLube Components Frequency Type Type No. of LubePoint to be (Months) of of Points orNo. Lubricated 13612Service Lube Quantity1.

High-Speed Antenna Lubrication Points59106784123LocalMotorControlHeaterControlPressureFittingPressureFittingGearboxFillGearboxVentGearboxLevelGearboxF

Medium-Speed Antenna Lubrication Points59106784123LocalMotorControlHeaterControlPressureFittingPressureFittingGearboxLevelGearboxDrainGearboxLevelGear

RecommendedToolsNOTE: Failure to follow an installation procedure could result in damage to equipmentor personal injury.Additional warnings will be di

Parts VerificationReportingEquipment Loss orDamageReporting VisibleLoss or DamageReportingConcealedDamage InventoryEquipmentReceivedAndrew Corporation

ReturningEquipmentStep 1 Step 2 Step 3 Step 4Step 5Andrew Corporation tries to ensure that all items arrive safe and in working order.Occasionally, de