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Andrew 7.6-Meter ESA manual High-Speed Antenna Lubrication Points, Preventive Maintenance, Vent

Models: 7.6-Meter ESA

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Pressure

Fitting

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		Worm Gear
				Polarization
		Pillow		Drive Gear
		Blocks (2)




Pressure
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Heater

Control

Gearbox

Gearbox

Fill

Fill

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Pressure

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Local

Motor

Control

Note

Gearbox

Medium-speed motors

Gearbox

Gearbox

shown for illustrative

Drain

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Vent

purposes only.

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Gearbox Gearbox

Level Vent

Gearbox

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Gearbox

Drain

High-Speed Antenna Lubrication Points

68	Preventive Maintenance

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Andrew 7.6-Meter ESA manual High-Speed Antenna Lubrication Points, Preventive Maintenance, Vent

Contents

Type ES76 Installation, Operation and MaintenanceCustomer 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 Customer Service Center Proprietary Data Information and AssistanceTechnical Assistance 24-hour Technical 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 Damage Reporting Visible Loss or Damage Reporting Concealed Damage InventoryEquipment 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 beginsYour Company Name Your Company Address City, State, and Zip Code Returning Equipment Step Step Step Step StepGetting Started Overview Foundation Preparation Installation ProceduresInstallation Procedures A-325 Tensioning Step Step Step Step Step Step Use Felt Marker Before After Tensioning TensioningInstallation Procedures Add the nut, and finger tightenUse 7/8 x 2-1/4 in 57 mm hardware Tripod Ground Mount Assembly Azimuth Beam Assembly Step Step StepInstallation Procedures Support Legs Assembly Step Step Installation ProceduresUse 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 nutsStep Step Installation ProceduresInstallation Procedures Step StepPanning Frame Assembly Step Installation ProceduresBolts should connect from panning frame to pivot assembly Use 7/8 x 2-1/4 in. 57 mm hardwareStep Installation ProceduresInsert bolts from panning frame to joint assembly Use 7/8 x 2-1/4 in 57 mm hardwareInstallation Procedures Step StepInstallation Procedures Step StepInstallation Procedures Step StepStep Installation ProceduresInsert bolts from elevation axis assembly to tripod joint bracket Installation Procedures Step StepUse 7/8 x 2-1/4 in 57 mm bolt, flatwasher and nut Insert bolts from channel leg to joint bracketUse 7/8 x 2-1/2 bolts and nuts Elevation Jackscrew Assembly Step StepInstallation Procedures Prop 301771/301736 elevation jackscrew up to align with 301725 tripod tube weldment as shown in Figure Installation ProceduresStep Step Attach shackles to beam assembly as shown in Figure Azimuth Jackscrew Assembly Step Step Mount Assembly Step StepInstallation Procedures Step Step Installation Procedures201327A JOINT ASSEMBLY 201313A BEAM ASSEMBLY 221345 PIVOT ASSEMBLY Step Step Installation Procedures221435 PIVOT ASSEMBLY 7/8 x 2-1/4” 57mm BOLTS, FLATWASHERS AND NUTS Note If optional motor drive system is included, install motors at this point. Refer to installation instructions provided with motor kits Step Step StepInstallation Procedures 221923/223180 221738 200088A Installation ProceduresStep Step 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 Operation OperationOverview Acquiring A Satellite Operation Step Step Step StepThe following steps provide the procedure for acquiring a satellite Operation Figure 4-4 Polarization at 45 degrees from Optimum SettingStep Step Step Step Figure 4-6 Optimum Polarization Setting StepOperation Figure 4-5 Maximizing Odd TranspondersOperation Subreflector AdjustmentNOTE No adjustments should be made in the receive band Preventive Maintenance Preventive MaintenanceOverview General Cleaning Electrical Parts Check the front panel for illegible and indistinct panel markings Mechanical Parts Inspection Local Control/Motor Drive ControllerPreventive Maintenance 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 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 switchtain 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 Drive System Voltage and Current Checks Step Step StepPreventive Maintenance Turn 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 Step Step Step Step Step StepPreventive Maintenance Preservation of Component Parts Aluminum Parts Galvanized Surfaces LubricationPreventive 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 primingThe following is a list of the lubricant characteristics Jackscrews/Motors Gear Motor/Housing Fill Drain RequirementsPreventive Maintenance Months Lubrication ChartPreventive Maintenance Vent High-Speed Antenna Lubrication PointsPreventive Maintenance Medium-Speed Antenna Lubrication Points Preventive Maintenance