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Andrew ES73 manual Subreflector Strut Assembly Step, Installation Procedures, Figure

Models: ES73

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Subreflector Strut Assembly

Step 1

Attach subreflector strut assemblies to 170147 quadrapod plates as shown in Figures 56 and 57. Tighten hardware until snug only.

•Use 1/2 x 1-1/2 in (38 mm) bolts, lockwashers and nuts

Figure 56

44	Installation Procedures

Page 44

Image 44

Andrew ES73 manual Subreflector Strut Assembly Step, Installation Procedures, Figure

Contents

Type ES73 Installation, Operation and Maintenance7.3-MeterESA 7.3-MeterEarth Station AntennaTable of Contents Table of ContentsHow to Use This Manual Getting Started Installation Procedures Operation PreventiveIntroduction 7.3-MeterEarth Station AntennaIntroduction Customer Service Center Proprietary Data Information and AssistanceNotice Technical Assistance 24-hourTechnical AssistanceHow to Use This Manual How to Use This ManualOverview Content Getting Started Getting StartedOverview Warnings Recommended Tools ToolSize QuantityParts Verification Reporting Equipment Loss or DamageReporting Visible Loss or Damage Reporting Concealed Damage Inventory Equipment ReceivedReturning Equipment Step Step Step Step Step Getting StartedOverview Foundation Preparation Installation ProceduresInstallation Procedures A-325Tensioning Step Step Step Step Step Step Use Felt Marker Before AfterTensioning Tensioning Installation ProceduresInstallation Procedures Tripod Ground Mount Assembly Azimuth BeamAssembly Step Step Step •Use 7/8 x 2-1/4in 57 mm bolts and nuts Figure Support Legs Assembly Step StepInstallation Procedures Step Step Installation Procedures•Use 7/8 x 2-1/4in 57 mm bolts and nuts Installation ProceduresStep Step Panning Frame Assembly Step Installation ProceduresStep Installation Procedures•Use 7/8 x 2-1/4in 57 mm hardware Figure FigureFigure Installation ProceduresStep Step •Use 7/8 x 2-1/4in 57 mm hardware Installation ProceduresStep Step •Use 7/8 x 2-1/4in 57 mm hardware Installation ProceduresStep Step Installation Procedures Elevation Axis AssemblyStep Figure•Use 7/8 x 2-1/4in 57 mm bolt, flatwasher and nut Installation ProceduresStep Step Elevation Jackscrew Assembly Step Step Installation ProceduresFigure Installation ProceduresStep Step Installation Procedures Azimuth Jackscrew Assembly Step StepMount Assembly Step Step Installation Procedures Step StepFigure 201327A 201313AFigure 32A Figure 32B Installation ProceduresStep Step Step Step Step Installation ProceduresFigure 35A Installation ProceduresStep Step Installation Procedures Reflector Subreflector Feed AssemblyFeed/Waveguide Assembly Step Step Figure Installation ProceduresStep Step Step 5 Step Installation ProceduresInstallation Procedures Step•Insert bolts from feed horn to mounting pipe Figure•Use 1/2 x 2 in 51 mm bolts, lockwashers and nuts Installation ProceduresStep Figure Installation ProceduresStep Figure Figure Reflector Backstructure Assembly StepInstallation Procedures Figure Installation ProceduresStep Step Step Center portion of Andrew “flash” logo Installation ProceduresFigure Installation Procedures Step•Use 1/2 x 1-1/2in 38 mm bolt, lockwasher and nut FigureFigure Figure Installation ProceduresStep Installation Procedures Step StepFigure FigureStep Step Step Step Step Step Installation ProceduresFigure Figure Installation ProceduresStep Step Figure Subreflector Strut Assembly StepInstallation Procedures Installation Procedures FigureFigure Figure Installation ProceduresStep Figure Installation ProceduresStep Step Step Reflector to Ground Mount Assembly Step Step Installation ProceduresInstallation Procedures Figure FigureSubreflector Assembly and Adjustment Step Step Installation ProceduresFigure Installation ProceduresStep Step Cross-AxisGrounding Kit Step Installation ProceduresFigure Installation ProceduresStep Step Step Operation OperationOverview Acquiring A Satellite Operation The following steps provide the procedure for acquiring a satelliteStep Step Step Step Step Step Operation Move the antenna in azimuth to obtain a null, then move ± in elevation to obtain a large peak signal. If not, move the antenna in the opposite azimuth direction through the peak and again move ± in elevation to obtain a large peak signal. If a larger peak is not found, you were on the main lobeStep Step Step Figure 4-5:Optimum Polarization Setting StepOperation Figure 4-4:Maximizing Odd TranspondersSubreflector Adjustment OperationPreventive Maintenance Preventive MaintenanceOverview General Cleaning Electrical Parts Preventive Maintenance Mechanical Parts Inspection Local Control/MotorDrive Controller Antenna Preventive MaintenancePreventive Maintenance and minus direction from the local control/motor drive controller at least once every three months during antenna down time. Check the mechanical limit switches provided at the end points stop the antenna and feed movement, and limit travel to prevent struc- tural interference and damage. Check the mechanical limit switches for corrosion and water entry and the arm on each feed limit switch for free movement without binding. Be certain both feed rotation limit switch arms are not distorted and ride centrally on the actuating cam to open their corresponding limit switchStep Drive System Voltage and Current Checks Step StepPreventive Maintenance Step Step Step Step Step Step Preventive MaintenanceTurn the AZIMUTH EAST/WEST switch to either position and while the antenna is rotat- ing, carefully use a clamp on ammeter in accordance with the ammeter manufacturer’s instructions to take current readings off each of the three conductors phases connect- ed to the load side of the azimuth drive motor circuit breaker. Record the current draw in the equipment log and compare the readings to the reference values entered in the installation/acceptance check off. If the readings differ by more than five percent, refer to appropriate troubleshooting information and perform applicable corrective action. Then take voltage readings off each of the three conductors; the readings should agree with each other—withintwo percent Preventive Maintenance Preservation of Component Parts Aluminum PartsGalvanized Surfaces Lubrication Preventive Maintenance Jackscrews/Motors Gear Motor/Housing Fill DrainRequirements Lubrication Chart Preventive Maintenance5 9 10 6 7 8High-SpeedAntenna Lubrication Points Preventive MaintenanceMedium-SpeedAntenna Lubrication Points Preventive Maintenance5 9 10 6 7 8