Andrew 7.6-Meter ESA Installation And Operation Manual Download

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Andrew Corporation

10500 West 153rd Street
Orland Park, IL U.S.A. 60462

Telephone: 708-349-3300
FAX (U.S.A.): 1-800-349-5444
Internet: http://www.andrew.com

Customer Service, 24 hours: U.S.A. • Canada • Mexico: 1-800-255-1479
U.K.: 0800 250055 • Republic of Ireland: 1 800 535358
Other Europe: +44 1592 782612

26 September, 2006

Installation, Operation and Maintenance

Bulletin OM76

Type ES76( )

7.6-Meter ESA

7.6-Meter Earth Station Antenna

Revision E

Summary of Contents for 7.6-Meter ESA

Page 1: ...p www andrew com Customer Service 24 hours U S A Canada Mexico 1 800 255 1479 U K 0800 250055 Republic of Ireland 1 800 535358 Other Europe 44 1592 782612 26 September 2006 Copyright 2005 by Andrew Co...

Page 2: ...Panning Frame Assembly 16 Elevation Jackscrew Assembly 23 Azimuth Jackscrew Assembly 25 Mount Assembly 25 Reflector Backstructure Installation Drawing 239501 30 Reflector Backstructure Installation Dr...

Page 3: ...e tripod mount features self aligning bearings for the elevation pivots resulting in zero backlash This mount can be operated manually but has the ability to be upgraded for motorized operation includ...

Page 4: ...enance practices All designs specifications and availabilities of products and services presented in this manual are subject to change without notice Copyright 2005 Andrew Corporation 4 Introduction 2...

Page 5: ...divided into five distinct sections each dealing with a specific technical topic relating to either system or component subsystem information The sections con tained in this manual are described and...

Page 6: ...nnas may require persons to work at elevated work stations Whenever persons are working at eight or more feet above the ground and not on a guarded platform they should wear safety belts with at least...

Page 7: ...er installation of the 7 6 Meter Earth Station Antenna Tool Size Quantity Open End or Combination Wrenches 5 16 Inch 2 7 16 Inch 2 9 16 Inch 2 7 8 Inch 2 3 4 Inch 2 1 2 Inch 2 1 1 4 Inch 1 Crane 15 To...

Page 8: ...ures when filing a claim with the carrier Make a note of any loss or evidence of external damage on the freight bill or receipt and have it signed by the carrier s agent Failure to adequately describe...

Page 9: ...nce the sales order and purchase order as well as the date the equipment was received Pack the equipment in its original container with protective packing material If the origi nal container and packi...

Page 10: ...Foundation specifications are provided by Andrew and may be used as a reference by civil engineering personnel when preparing the foundation for local soil conditions These specifications are availab...

Page 11: ...omplete tighten the bolts until the surfaces are joined and the nuts are snug for example full effort of a person using an ordinary spud wrench Do not proceed with Steps 5 and 6 unless the connection...

Page 12: ...d ground mount assembly All ground mount hardware is type A 325 Lubricate all A325 bolt threads with supplied stick wax Note Do not tighten hardware until ground mount installation is complete unless...

Page 13: ...wn in Figure 5 Attach 200083 angles to 201313A beam assembly as shown in Figure 5 Use 7 8 x 2 1 4 in 57 mm bolts and nuts for each connection Installation Procedures Figure 5 Attach 200088A joint asse...

Page 14: ...d be installed back to back with the flat of angle facing upwards Tighten supports until assembly can support itself Installation Procedures Figure 7 Attach 201301 201302 rear pad assembly to 201315 s...

Page 15: ...ide of support Supports should be installed back to back with the edges forward and the flats of angles facing rear Installation Procedures Figure 9 Attach 201317 supports between angle pairs as shown...

Page 16: ...16 Attach 201487 panning frame to 221384 azimuth pivot assembly as shown in Figures 11 and 12 Use 7 8 x 2 1 4 in 57 mm hardware Bolts should connect from panning frame to pivot assembly Installation P...

Page 17: ...7 Attach 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 frame to joint assembly Installation Procedures Figure 13 Fi...

Page 18: ...dpoints of support pairs Use 7 8 x 2 1 4 in 57 mm hardware for each connection Installation Procedures Figure 15 Attach 221345 azimuth pivot assembly to 201316 support pairs Attach 201596 mount ing pl...

Page 19: ...2 1 4 in 57 mm hardware Insert bolts from inside panning frame assembly Installation Procedures Figure 17 Attach 201488 outrigger plate to opposite end of 201487 panning assembly Attach 201481 201482...

Page 20: ...sert bolts from inside assembly to outrigger plate Installation Procedures Figure 19 Attach 221721 elevation axis assembly to 201487 panning frame assembly and 221608 joint assemblies as shown in Figu...

Page 21: ...tach 301741 301742 tripod joint bracket to 221721 elevation axis assembly as shown in Figure 22 Use 7 8 x 2 1 4 in 57 mm bolt flatwasher under bolt and under nut and nut Insert bolts from elevation ax...

Page 22: ...shown in Figure 23 Use 7 8 x 2 1 4 in 57 mm bolt flatwasher and nut Insert bolts from channel leg to joint bracket Figure 24 Figure 23 Attach 301725 tripod tube weldment to 300026 tripod channel legs...

Page 23: ...assembly to 201596 mounting plates as shown in Figure 25 Tighten connection Use 7 8 x 2 1 2 bolts and nuts Figure 25 Loosen rubber boot from end of jackscrew Turn elevation drive screw to extend jack...

Page 24: ...bolt Fasten with heavy hex nut and flatwasher according to A 325 procedure with the exception of tightening the nut 1 2 turn from snug condition Tighten jam nut in accordance with A 325 procedure Appl...

Page 25: ...vent scratching jackscrew tube Note Ensure jackscrew assembly remains fully retracted at this time Figure 29 Apply RTV to flange surface as shown in Figure 29 Fasten jack to pivot using 7 8 x 2 3 4 in...

Page 26: ...ssemblies to rear foundation pads as pictured in Figure 31 Figure 31 Connect beam assembly using 7 8 x 2 1 4 in 57 mm hardware Tighten supports to beam assembly per A 325 tensioning procedure 201327A...

Page 27: ...1 4 hardware from pivot assembly to joint assembly as shown in Figure 32 Figure 32 Attach 221435 azimuth pivot assembly to 201408 beam assembly with a line of RTV around the plate and four 7 8 x 2 1 4...

Page 28: ...int assembly with 1 x 2 1 2 in 63 mm hardware Note Mounting position of azimuth pivot jackscrew assembly is dependent upon azimuth range requirements and corre sponds with mounting position of 201488...

Page 29: ...collars of pin assembly at end of azimuth jack Do not retighten these collars Apply supplied Loctite to pin threads and nuts Attach 1 1 2 in 38 mm hex nuts to top and bottom of azimuth jackscrew pin a...

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Page 54: ...tenna on the desired satellite There are several procedures that may be used to properly acquire the satellite Andrew recommends that a spectrum analyzer be used The following procedures provide expla...

Page 55: ...nsponder signals are maxi mized follow the same procedure manually moving the antenna in elevation scanning up and down to further maximize the transponder signals Repeat this procedure alternating be...

Page 56: ...creases deceases and then increases again but to a lesser value the antenna is moving in the wrong direction reverse the direction of the antenna move ment From the original null point the signal leve...

Page 57: ...the spectrum analyzer screen determine the specific antenna system and satellite parame ters Rotate the feed assembly as required until the appropriate odd or even transpon der signals are maximized F...

Page 58: ...of the subreflector should be adjusted downward by loosening the screws between the subreflector and the struts and adjusting the bottom side of the subre flector downward An easy way to remember thi...

Page 59: ...The following paragraphs describe the inspection and preventive maintenance proce dures for the earth station These instructions include general cleaning and inspection the preservation of metal parts...

Page 60: ...ired or replaced immediately or at the conclusion of the inspection procedure Inspection of the local control motor drive controller conforms generally to standard visu al inspection procedures on ele...

Page 61: ...e water entry to the enclosed electrical components in order to maintain a waterproof condition Check or change humidity absorber Inspection of the antenna conforms generally to standard visual inspec...

Page 62: ...resolvers for a secure mechanical attachment Ensure proper torquing of polarization drive gear box setscrews and appropriate tensioning of corresponding drive chain assembly if applicable Check if ap...

Page 63: ...able the RF transmitter and all power supplies The main disconnect switch in the main load center box at the antenna site must be in the ON position and the LOCAL REMOTE switch in the local control mo...

Page 64: ...s 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...

Page 65: ...the primed surfaces and blend with the existing painted surface Remove all loose paint and corrosion by scraping wire brushing or using steel wool Edges of existing paint can be blended with the metal...

Page 66: ...lsius Periodically inspect lifting screws on jackscrew assemblies to ensure adequate lubrica tion Loosen Jackscrew boot clamps to expose the lifting screw assembly Fully extend jackscrew assembly bein...

Page 67: ...iate Gearbox I C Pipe Plugs SHC624 34 Oz Fill and Drain 9 Polarization Drive Gear X Brush SHC32 Minimum Surface Coverage 10 Feed Rotation Worm Gear X Pressure Fitting SHC32 2 Pillow Blocks X Lubricate...

Page 68: ...re Fitting Gearbox Fill Gearbox Vent Gearbox Level Gearbox Fill Gearbox Vent Gearbox Level Polarization Drive Gear Worm Gear Pillow Blocks 2 Note Medium speed motors shown for illustrative purposes on...

Page 69: ...7 8 4 1 2 3 Local Motor Control Heater Control Pressure Fitting Pressure Fitting Gearbox Level Gearbox Drain Gearbox Level Gearbox Drain Polarization Drive Gear Worm Gear Pillow Blocks 2 Pressure Fit...

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