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Bulletin OM76PK
Installation, Operation and Maintenance
Revision D
Type ES76PK-1
7.6-Meter ESA
7.6-Meter Earth Station Antenna
Notice
The installation, maintenance, or removal of antenna systems requires qualified, experienced personnel. Andrew installa-
tion instructions have been written for such personnel. Antenna systems should be inspected by qualified personnel to
verify proper installation, maintenance and condition of equipment.
Andrew Corporation disclaims any liability or responsibilit
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Table of Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Introduction Proprietary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Information and Assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Notice . . . . . . . . .
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7.6-Meter Earth Station Antenna Like all Andrew earth station antennas, the 7.6-Meter Earth Station Antenna provides Introduction high gain and exceptional pattern characteristics. The electrical performance and excep- tional versatility provides the ability to configure the antenna with your choice of linearly- or circularly-polarized 2-port or 4-port combining network. That versatility is provided at the time of initial purchase, as well as in the future, as your satellite communication requir
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The technical data contained herein is proprietary to Andrew Corporation. It is intended Proprietary Data for use in operation and maintenance of Andrew supplied equipment. This data shall not be disclosed or duplicated in whole or in part without express written consent of Andrew Corporation. Information and Andrew Corporation provides a world-wide technical support network. Refer to the tech- Assistance nical assistance portion of this this manual for the contact numbers appropriate to your lo
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How to Use This Manual The scope of this manual is intended to provide station personnel with the base installa- Overview tion, operation, and maintenance requirements necessary for a 7.6-Meter C-, X- or Ku- Band Earth Station Antenna. This manual provides a convenient reference for autho- rized operator/service personnel requiring technical information on general system or specific subsystem equipment. The tables and figures presented in this manual are used as communication aids for the instal
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Getting Started The installation, operation, and maintenance of the 7.6-Meter Earth Station Antenna Overview requires qualified and experienced personnel. Andrew installation, operation, and main- tenance instructions are illustrated for such personnel. Additionally, the antenna should be inspected by qualified personnel to verify proper installation, maintenance, and con- dition of equipment as described in Preventive Maintenance. The basic equipment and accessories are either manufactured or d
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NOTE: Failure to follow an installation procedure could result in damage to equipment or personal injury. Additional warnings will be displayed throughout this manual for your awareness. These warnings can be identified in warning boxes as shown in the following sample. Andrew disclaims any liability or responsibility for the results of improper or unsafe installation, operation, or maintenance practices. Andrew supplies all appropriate hardware/parts required for the installation of your 7.6- R
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Upon receipt of your order, the shipment should be verified to ensure that all parts have Parts Verification reached your site. This process should occur before the installation process begins. Andrew Corporation thoroughly inspects and carefully packs all equipment before ship- ment. If you find that there are missing components, please refer to page 9 for step-by- step instructions on how to properly report the equipment loss. When you have received your order, verify that all parts contained
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Andrew Corporation tries to ensure that all items arrive safe and in working order. Returning Occasionally, despite these efforts, equipment is received which is not in working condi- Equipment tion. When this occurs, and it is necessary to return the equipment to Andrew Corporation for either repair or replacement, return can be expedited by following the procedure listed below: Call the Andrew Customer Service Center and request a Return Material Authorization Step 1 (RMA) number, as well as
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Installation Procedures Overview This section provides installation procedures for the 7.6-Meter Andrew Earth Station Antenna. The installation procedures include instructions on the following antenna com- ponents: • Mount • Reflector-to-Mount Assembly • Reflector • Subreflector • Enclosure Foundation Before beginning the installation process on the ground mount assembly, ensure that Preparation the foundation has been prepared. Foundation specifications are provided by Andrew and may be used as
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A-325 Tensioning During the installation process, there are several references to the A-325 hardware ten- sioning procedure. The A-325 hardware must be properly tensioned to avoid slippage between bolted surfaces under high loads. Slippage can cause the corresponding assembly to move, causing antenna misalignment. When designated, the A-325 hard- ware should be tightened according to the following tensioning procedure. NOTE: Tensioned bolts are for final connections only and should not be loosen
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The Pedestal Mount is an elevation-over-azimuth mount optimized for geostationary Pedestal Ground Mount Assembly satellite applications. The mount enables continuous elevation adjustment from 0 to 90 degree. The azimuth axis has over 180 degrees of travel with 120 degrees (+/-60 deg.) of continuous travel at each jack position. The jack can be positioned every 45 deg. around the pedestal tube. Follow the subsequent procedures for proper installation of Pedestal pedestal ground mount assembly. In
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Using the 1-1/4 in. foundation hardware supplied, level the pedestal to within +/-0.1 Step 3 degrees. Tighten each anchor bolt to 912 lb/ft (126 kg/m) as shown in Figure 4. Note: Tighten each bolt using no more than 300 lb/ft (41.5 kg/m) at a time in tightening sequence shown. • Use 1-1/4 in. flatwashers and hex nuts. Figure 4 13 Installation Procedures
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Step 4 Place Anchor Plates (175311) over the corresponding anchor bolts as shown in Figure 3. Note: Ensure anchor plates are oriented on the foundation bolts as shown, level and on same datum as the pedestal assembly. Using the foundation supplied hardware, tighten each anchor bolt to 912 lb/ft (126 kg/m) as shown in Figure 4. Note: Tighten each bolt using no more than 300 lb/ft (41.5 kg/m) at a time in tightening sequence shown. Loosely fasten the two halves (303545-101 & 303545-3) of the suppo
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Azimuth Jackscrew Assembly Step 1 Raise the Azimuth Jack assembly into place and attach it to the pedestal assembly as shown in Figure 7. NOTE: The bolts attaching the trunnion to the jack are supplied loose, this hardware must be torqued once the jack is installed and aligned (see Figure 7). • Install Azimuth Trunnion Pin (302164). • Use 3/8 x 1 in. capscrew, washer and lock washer. AZ Trunnion Pin, 302164 3/8”x1.0 Bolt, 9963-632 Lockwasher, 9974-5 Washer, 9997-146 Torque 1” hardware to 640 ft.
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Attach Azimuth Jack rod end assembly to the Azimuth Jack Arm as shown in Figure 8. Step 2 • Use Azimuth Pin (302168) and 3/8 x 1 in. capscrew, washer and lock washer. (AZ Jack Pin, 302168) 1-1/4” Washer, 9997-188 (2) (AZ Jack, 302281) (302383) AZ Jack Pin, 302168) 3/8”x1.0 Bolt, 9963-632 Lockwasher, 9974-5 Washer, 9997-146 Figure 8 17 Installation Procedures
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Elevation Jackscrew Assembly Raise and attach the Elevation Jack assembly to the pedestal assembly as shown in Step 1 Figure 10. Fully retract the Elevation Jack to it’s minimum length. NOTE: The bolts attaching the trunnion to the jack are supplied loose, this hardware must be torqued once the jack is installed and aligned (see Figure 10). • Use Elevation Trunnion Pin (303725) and 3/8 x 1 in. capscrew, washer and lockwash- er. 3/8”x1 Bolt, 9963-632 Lockwasher, 9974-5 Washer, 9997-146 Retract Ja
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WARNING Assembly and installation of Reflector/Backstructure should only take place when winds are less than 15 mph (24 km/h) to prevent damage to reflector panels and ease the assembly process. Follow special instructions stenciled on crate relative to crate opening, contents removal and/or personnel safety. Reflector/ Note Backstructure Lubricate bolt threads of both stainless steel and A325 hardware with supplied Stick Assembly Wax (200852) to reduce friction. Do not allow wax under flat wash
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Once all 16 Short Struts are installed and securely fastened, re-install Rear Enclosure Step 2 Panel. Carefully rotate the enclosure right-side-up as shown in Figure 12. Place tempo- rary wood blocks under each of the enclosure’s three support pads with the additional block positioned in between. Step 3 Install Ribs (222673) to enclosure strut as shown in Figure 12. Attach Target Screws supplied from Alignment Kit (223711) as shown and tighten. Leave all other hardware loose. 1/2-13x1.0, Shoulde
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Install Outer Strut to assembly as shown in Figure 13. Leave hardware loose. Step 4 Eccentric Bolt, 300084A Washer, 9997-101 1/2” Locknut, 9979-54 (Outer Strut, 300079) View A-A Outer Strut, 300079 View B-B 5/8”x2.0 Bolt & Nut, 45980-1 1/2”x1/2 Shoulder Bolt, 9858-19 Washer, 9997-227 1/2” Washer, 9997-101 3/8” Washer, 9997-89 3/8” Lockwasher, 9974-63 3/8” Nut, 9999-60 (300079) Figure 13 22 Installation Procedures
