Andrew 3.7-Meter Earth Station Antenna manual Operation

Page 76

Manual Actuator Assembly Removal

Step 1

Step 2

Step 3

Embedded Pipe

Ground Mount

Elevation

Adjustment

Step 1

Step 2

Azimuth

Adjustment

Step 1

Conclusion

After you have successfully acquired the satellite and all adjustments have been made, the manual actuator should be removed. The following steps provide the procedure for the prop- er removal of the manual actuator assembly.

Remove the manual actuator assembly by first removing the hardware securing the actuator to the base angle.

NOTE: The adjustment kit assembly should be removed after the antenna has been adjust- ed. Store the manual actuator assembly and the corresponding hardware in a dry area for future use.

Remove the remaining clamp segments with the corresponding hardware.

After the antenna is pointed at the satellite, tighten all azimuth and elevation setscrews to 35 foot-pounds.

Loosen the M20 elevation hinge bolts slightly. If coarse adjustment (i.e. more than ± 7.5) is required then loosen the three square head bolts, and u-bolt to threaded rod, make adjustment then re-tighten U-bolt. Fine adjustment is performed by working brass nuts on either side of bracket/U-bolt assembly to push or pull antenna.

Finally, tighten the M20 elevation pivot bolts to 185 N•m. (136 lbs-ft) and check all other fasteners relating to the elevation strut.

Slightly loosen the eight M16 nuts on the main azimuth hinge u-bolts and square head bolts and nut, connecting bracket to concrete. Operate the azimuth adjustment strut in the same manner as the elevation adjuster. When adjustment is complete, tighten the square head bolts and nut, connecting bracket to concrete and finally tighten the eight nuts (M16) on the u-bolts to 95 N•m. (70 lbs-ft)

Check that the fasteners on the mount are tightened to the following torque levels:

M16 - 95 N-m (70 lbs-ft)

M20 - 185 N-m (136 lbs-ft)

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Operation

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Contents Meter ESA Table of Contents Meter Earth Station Antenna IntroductionCustomer Service Center Proprietary Data Information and Assistance TechnicalOverview Content How to Use This ManualOverview Getting StartedRecommended Tools Getting Started Returning Equipment Step Getting Started For Mpjk Types Only Main Reflector Assembly Enclosure Assembly Reflector-To- Mount Assembly Subreflector Feed System Installation Procedures Overview Foundation PreparationTensioning Step 1b A-325 Tensioning For bolts over four diametersMount Unpacking Assembly Using a Crane Step 4b Ground Mount Assembly Base Hardware Assembly Without a Crane Step Ground Mount Assembly Alignment with Anchor Bolts6a Manual Lift 8a Ground Mount Assembly Base Hardware Motorizable Pedestal Ground Mount Assembly Step 8b Ground Mount Assembly Tiller Arm Hardware8d Ground Mount Assembly Tiller Arm Hardware Manual Pedestal Ground Mount Assembly Step 10 Waxing BoltsStep 13 Elevation and Azimuth Struts Step 17a Azimuth Strut Assembly Front 17b Azimuth Strut Assembly Rear 20 Bracket-Support Plates Top View 21a Elevation Strut Bracket Manual Actuator Assembly Step 22a Manual Actuator Assembly23 Azimuth Pivot Bracket Assembly 25a Jack Unscrew Procedure 26 Protective Boot Attachment 28a Elevation Jack Step Embedded Pipe Ground Mount Assembly Step 29b Left Side Frame AttachmentStep Elevation/Azimuth Strut Assembly 29d Elevation/Azimuth Strut Assembly29f Elevation Axis Weldment Attachment 29g Azimuth Strut/Pointer Attachment 29i Fine Azimuth Adjustment Attachment Reflector Unpacking Step 30a Domestic Pack30b Export Pack Step Assembly 31 Reflector Seam Alignment32 Seam Bolt Insertions Very Important 33c Alignment Bolt Insertions 34a Mounting Ring Placement 35a Mounting and Center Rings -35b Mounting and Center Rings Alignment Test Step 38a Enclosure Final Assembly Enclosure Pedestal Mount Only Step39a Enclosure Hardware Step Reflector-to-Mount Assembly Using a Crane Step 43 Safety Rope Tag Lines44b Crane Lift Without a Crane Step 46 Reflector to Mount 48 Enclosure Bracket Alignment Step 50a Reflector to Mount Reflector-to-Mount Assembly Embedded Pipe Ground Mount Step 52a Subreflector Strut Assembly Subreflector Step53a Subreflector Assembly 53c Subreflector Assembly 54a Subreflector Attachment Subreflector Struts Embedded Pipe Ground Mount Assembly Step Subreflector Adjustment Step Step Step Feed System Overview Acquiring a Satellite Step OperationPure Noise Signal on Spectrum Analyzer Step Polarization at 45 degrees from Optimum Setting Maximizing Odd Transponders Operation Subreflector Adjustment Preventive Maintenance Overview General Cleaning Electrical PartsPreventive Maintenance Antenna Preventive Maintenance Drive System Voltage Current Checks Step Step Pedestal Mount Bearing Pad Adjustment Preventive Maintenance Jackscrews/Motors Gear Motor/Housing Fill Drain Requirements Service Lube Quantity Andrew