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Andrew 7.6-Meter ESA manual Type ES76, Installation, Operation and Maintenance, Bulletin OM76

Models: 7.6-Meter ESA

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Installation, Operation and Maintenance

Type ES76( )

7.6-Meter ESA

Bulletin OM76

Revision E

7.6-Meter Earth Station Antenna

Andrew Corporation	Telephone: 708-349-3300	Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479
10500 West 153rd Street	FAX (U.S.A.): 1-800-349-5444	U.K.: 0800 250055 • Republic of Ireland: 1 800 535358
Orland Park, IL U.S.A. 60462	Internet: http://www.andrew.com	Other Europe: +44 1592 782612	26 September, 2006
			Copyright © 2005 by Andrew Corporation

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Andrew 7.6-Meter ESA manual Type ES76, Installation, Operation and Maintenance, Meter Earth Station Antenna, Bulletin OM76

Contents

Installation, Operation and Maintenance Type ES76Customer Service, 24 hours U.S.A. Canada Mexico 7.6-Meter ESATable of Contents Table of ContentsIntroduction How to Use This Manual Getting Started Installation Procedures Operation Preventive MaintenanceIntroduction 7.6-Meter Earth Station AntennaIntroduction Proprietary Data Information and Assistance Customer Service CenterTechnical Assistance 24-hour Technical AssistanceOverview Content How to Use This ManualHow to Use This Manual Overview Warnings Getting StartedGetting Started Tool Recommended ToolsSize QuantityReporting Visible Loss or Damage Reporting Concealed Damage Inventory Parts Verification Reporting Equipment Loss or DamageEquipment Received Upon receipt of your order, the shipment should be verified to ensure that all parts have reached your site. This process should occur before the installation process beginsGetting Started Returning Equipment Step Step Step Step StepYour Company Name Your Company Address City, State, and Zip Code Installation Procedures Installation ProceduresOverview Foundation Preparation Use Felt Marker Before After Tensioning Tensioning A-325 Tensioning Step Step Step Step Step StepInstallation Procedures Add the nut, and finger tightenInstallation Procedures Tripod Ground Mount Assembly Azimuth Beam Assembly Step Step StepUse 7/8 x 2-1/4 in 57 mm hardware Installation Procedures Support Legs Assembly Step StepUse 7/8 x 2-1/4 in 57 mm bolts and nuts for each connection Use 7/8 x 2-1/4 in 57 mm bolts and nutsInstallation Procedures Step StepStep Step Installation ProceduresInstallation Procedures Panning Frame Assembly StepBolts should connect from panning frame to pivot assembly Use 7/8 x 2-1/4 in. 57 mm hardwareInstallation Procedures StepInsert bolts from panning frame to joint assembly Use 7/8 x 2-1/4 in 57 mm hardwareStep Step Installation ProceduresStep Step Installation ProceduresStep Step Installation ProceduresInsert bolts from elevation axis assembly to tripod joint bracket Installation ProceduresStep Step Step Installation ProceduresUse 7/8 x 2-1/4 in 57 mm bolt, flatwasher and nut Insert bolts from channel leg to joint bracketInstallation Procedures Elevation Jackscrew Assembly Step StepUse 7/8 x 2-1/2 bolts and nuts Step Step Installation ProceduresProp 301771/301736 elevation jackscrew up to align with 301725 tripod tube weldment as shown in Figure Installation Procedures Azimuth Jackscrew Assembly Step Step Mount Assembly Step StepAttach shackles to beam assembly as shown in Figure 201327A JOINT ASSEMBLY 201313A BEAM ASSEMBLY 221345 PIVOT ASSEMBLY Installation ProceduresStep Step 221435 PIVOT ASSEMBLY 7/8 x 2-1/4” 57mm BOLTS, FLATWASHERS AND NUTS Installation ProceduresStep Step Installation Procedures Step Step StepNote If optional motor drive system is included, install motors at this point. Refer to installation instructions provided with motor kits Step Step Installation Procedures221923/223180 221738 200088A Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Installation Procedures Overview Acquiring A Satellite OperationOperation The following steps provide the procedure for acquiring a satellite Step Step Step StepOperation Step Step Step Step Figure 4-4 Polarization at 45 degrees from Optimum SettingOperation Step Figure 4-6 Optimum Polarization SettingOperation Figure 4-5 Maximizing Odd TranspondersNOTE No adjustments should be made in the receive band Subreflector AdjustmentOperation Overview General Cleaning Electrical Parts Preventive MaintenancePreventive Maintenance Preventive Maintenance Mechanical Parts Inspection Local Control/Motor Drive ControllerCheck the front panel for illegible and indistinct panel markings Preventive Maintenance Antennaand 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 antenna and feed movement, and limit travel to prevent structural 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 cer- tain both feed rotation limit switch arms are not distorted and ride centrally on the actu- ating cam to open their corresponding limit switch Preventive MaintenancePreventive Maintenance Drive System Voltage and Current Checks Step Step Steptain all electrical grounding connections including cross-axis grounding straps are intact and secure, not corroded or broken. Thoroughly clean any noticeable corroded portions of grounding cables, unplated portion of universal terminals and corresponding mounting surfaces using a wire brush. Replace rather than tighten any loose A-325 structural hardware. The hardware distorts at initial installation and once loosened will not maintain the required high strength friction connection. All other assembly and instal- lation hardware should be tightened to its original torqued condition. When installing new structural hardware, do not use a wrench with a lever arm longer than two feet Preventive Maintenance Step Step Step Step Step StepTurn 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-within two percent. Turn the AZIMUTH switch to OFF Lubrication Preservation of Component Parts Aluminum Parts Galvanized SurfacesPreventive Maintenance Remove all loose paint and corrosion by scraping, wire brushing, or using steel wool. If using steel wool near the feed window, make sure that none remains on the feed horn window. Edges of existing paint can be blended with the metal surface by using a fine grit sandpaper. Wipe the surface to be painted with a soft rag dampened in trichlorethyl- ene, lacquer thinner or equal. Be certain to remove all loose paint, corrosion, imbedded dirt, grease, and oil deposits or the paint will not adhere to the surface. Lacquer thinner will dissolve paint if applied heavily and rubbed vigorously. The reflector may be washed with plain water if necessary. Do not use bleach, soap solutions, or kerosene as it is dif- ficult to remove the residue. Allow the cleaned surface to dry thoroughly before primingPreventive Maintenance Jackscrews/Motors Gear Motor/Housing Fill Drain RequirementsThe following is a list of the lubricant characteristics Preventive Maintenance Lubrication ChartMonths Preventive Maintenance High-Speed Antenna Lubrication PointsVent Preventive Maintenance Medium-Speed Antenna Lubrication Points

Installation, Operation and Maintenance

Type ES76( )

7.6-Meter ESA

Bulletin OM76

7.6-Meter Earth Station Antenna

Andrew Corporation