Andrew ES45T инструкция обслуживания

Andrew Cor poration 10500 West 153rd S treet Orland Park, IL U.S.A. 60462 T elephone: 708-349-3300 F AX (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 15 August, 2005 Copyright ©[...]

Introduction How to Use This Manual Getting Star ted Installation Procedures Operation Prev entive T able of Contents 2 T a ble of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Proprietary Data . . . . . . . . . . . . . . . . . [...]

Like all Andrew earth station antennas, the 4.5-meter earth station antenna provides high gain and exceptional pattern characteristics. The electrical performance and excep- tional versatility provides the ability to configure the antenna with your choice of trans- mit/receive as well as receive-only , and for either linearly- or circularly-polariz[...]

Proprietar y Data Infor mation and Assistance Notice T echnical Assistance The technical data cont ained herein is proprietary to Andrew Corporation. It is intended for use in installation, operation, and maintenance of Andrew equipment. This dat a shall not be disclosed or duplicated in whole or in part without express written consent of Andrew Co[...]

Ov er view Content The scope of this manual is intended to provide station personnel with the base inst alla- tion (ie: mount, reflector and enclosure), operation and maintenance requirements nec- essary for a 4.5-Meter Earth S tation Antenna. Note: All antenna option instructions are included in the individual kit shipped with the part. This manua[...]

Ov er view Warnings The installation, operation and maintenance of the 4.5-Meter Earth S tation Antenna requires qualified personnel. Andrew installation, operation and maintenance instructions are illustrated for such personnel. Additionally , the antenna should be inspected by qual- ified personnel to verify proper installation, maintenance and c[...]

R ecommended T ools 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 r[...]

Par ts V erification R e por ting Equipment Loss or Damage R e por ting Visible Loss or Damage R e por ting Concealed Damage Inv entor y Equipment R eceiv ed R etur ning Equipment Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Upon receipt of your order , the shipment should be verified to ensure that all parts have reached your site. This process should [...]

Installation Sequence Checklist Site Pre paration T ripod Gr ound Mount Assembly ES45T -R Main R eflector Assembly ES45T -R Back Structure Assembly ES45T R eflector- to-Mount Assembly (With Cr ane) Feed Installa tion The 4.5-Meter Earth S tation Antenna requires the installation team to perform the assembly in the sequence presented below . Moreove[...]

T ripod Gr ound Mount Assembly ES45T -T Main R eflector Assembly ES45T -T Back Structur e Assembly ES45T R eflector- to-Mount Assembly (With Cr ane) Feed Installa tion Wa veguide/Flex Section Assembly Subreflector Installation Feed Installa tion  Mount azimuth axis support and rear anchor pads  Connect support angles  Attach support and el[...]

Ov er view Founda tion Pre paration 11 Installation Procedures This section provides installation procedures for the 4.5-Meter Andrew Earth S tation Antenna. The inst allation procedures include instructions on the following antenna com- ponents. • Mount • Reflector • Back S tructure • Reflector T o Mount Assembly • Subreflector • Feed [...]

A-325 T ensioning Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 12 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 anten[...]

T ripod Mount Ste p 1 13 The three-point mount in an elevation-over-azimuth configuration optimized for geosta- tionary satellite applications. The mount enables st andard elevation ranges from 2°-62°, and 33°-90° with high-look strut configuration. Azimuth range is ±82°. Fine adjustment is provided in both azimuth and elevation. An example o[...]

Ste p 2 14 Installation Procedures Figure 4 Loosely connect support angles (P/N 49624) with spacers (P/N 46560-2) to azimuth axis support and rear anchor pads as shown in figure 5. • Use A-325 ½ x 1-½ in. bolts and nuts for connections. (see page 12) • Support angles should be installed edge down with flat of the angle facing upward Figure 5 [...]

Ste p 3 Ste p 4 15 Lay out support and elevation pivot assembly (P/N 49635) and support angles (P/N 49623) as shown in Figure 6. Installation Procedures Figure 6 Loosely bolt support and elevation pivot assembly (P/N 49635) and support angles (P/N 49623) to connection plates as shown in Figure 7. • Use A-325 ½ x 1-½ in. bolts and nuts. (see pag[...]

Ste p 5 Ste p 6 16 Loosely attach support angles (P/N 49622) to the upper azimuth axis joint (P/N 300748) and the connection plates (part of P/N 49635)as shown in Figure 8. • Use A-325 ½ x 1-½ in. bolts, flatwashers and nuts. (see page 12) • Angles should be attached with flat of angle facing upward • Loosely attach support angles to azimut[...]

Ste p 7 Ste p 8 Ste p 9 17 T ightly knot 40 ft. rope to azimuth axis joint (P/N 300748) for hoisting to azimuth axis support (P/N 49634). Installation Procedures Figure 10 S tation one inst aller on a ladder to hoist support assembly as at least one other installer walks the assembly into the upright position as shown in Figure 10. Loosely fasten l[...]

Ste p 10 Ste p 11 Ste p 12 18 Use a carpenter ’s level to level support assembly as indicated in Figure 12. Loosen U- bolts to move support assembly up or down as needed to achieve level surface. Installation Procedures Figure 13 Figure 12 T ighten anchor bolts on rear p ads and azimuth axis support base plate down using A- 325 procedure. See A-3[...]

Ste p 13 19 Installation Procedures Figure 14 Determine required length of elevation strut to nearest degree increment of desired ele- vation setting as specified in the Elevation and Azimuth Adjustments Section. Adjust coarse setting by extending secondary and, if necessary , tertiary sections to length. Install eight ½ in. set screws and securel[...]

20 Installation Procedures Loosely attach azimuth strut end bracket (P/N 49767) to universal block (P/N 49705) as shown in Figure 16. • Use ¾ x 1-¼ in. bolts, flatwashers and lockwashers Ste p 14 Ste p 15 Figure 16 Loosely attach block to appropriate rear p ad as based upon calculations in Appendix F to determine the mounting configuration of t[...]

Ste p 16 Ste p 17 Ste p 18 Ste p 19 21 Connect U-bracket (P/N 49704) to appropriate connection plate. • Use A-325 ½ x 1-½ in. bolts, flatwashers and nuts. (see page 12) Installation Procedures Figure 18 Determine required length of azimuth strut to nearest degree increment of desired azimuth setting as specified in the Elevation and Azimuth Adj[...]

ES45T -R R eflector Ste p 1 Ste p 2 22 The ES45T -R-1 reflector is composed of six precision-formed panels designed for accu- racy and strength and ensure reliable surface contour which provides exceptional oper- ating characteristics in C- or Ku-frequency band. Reflector should be assembled on a clear , flat area in front of the foundation pad. Cl[...]

Ste p 3 23 Note: All six reflector segments are identified individually by a two letter designation (A- B, D-E, etc). Locate the markings on the reflector segments in order to assemble the reflector in the proper sequence. See Figure 21. Installation Procedures Figure 22 Figure 21 Place reflector segment A-B between two setting bands with concave s[...]

Ste p 4 Ste p 5 24 Installation Procedures Raise segments and hold while loosely att aching mounting ring hub (P/N 49965) to con- vex side of center opening. • Use ¼-20 capscrews, lockwashers and nut s • Insert capscrews from concave side of reflector segment s Loosely attach reflector segment s A-B and D-E to diameter setting bands (P/N 49426[...]

Ste p 6 Ste p 7 25 Installation Procedures Figure 24 Loosely attach joining plate (P/N 49693) along A-A seam inside reflector rim as shown in Figure 25. • Insert ¼-20 capscrews from out side reflector rim Figure 25 ES45T -R R eflector Assembly Loosely attach segment A-F to mounting ring hub, diameter setting bands and segment A-B using joining p[...]

Ste p 8 Ste p 9 26 Installation Procedures Loosely attach segment E-F to mounting ring hub, diameter setting bands and segment s A-F and D-E with joining plates (P/N 49425) along reflector panel seams E-E and F-F . Loosely attach joining plates (P/N 49693) on rim seams E-E and F-F as illustrated in Figure 26. Figure 26 S tation an inst aller inside[...]

Ste p 10 Ste p 11 27 Installation Procedures Loosely attach reflector segment B-C to mounting ring hub and diameter setting bands. Use joining plates (P/N 49425) along B-B panel seam and joining plate (P/N 49693) on B-B rim seam. Before last panel, lif t reflector and return temporary supports to initial measuring posi- tion. Have installer inside [...]

28 Installation Procedures Ste p 12 Ste p 13 Ste p 14 Install last reflector p anel ( C-D ) by loosely attaching to diameter setting bands and mounting ring hub. Loosely attach p anel seam hardware as installer inside moves reflector segment to enable segment union. Loosely attach ret aining bar (P/N 49997) to mounting ring hub (P/N 202429). Loosel[...]

29 Installation Procedures R eflector Le v eling Procedure Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 Ste p 7 Ste p 8 Position (6) temporary supports near p anel seams exactly as shown in Figure 29. Note: T emporary supports should be large enough to adequately support the reflector and strong enough to easily support reflector weight without [...]

Ste p 9 Ste p 10 Ste p 11 Ste p 12 Ste p 13 Feed Strut Assembly Ste p 1 Ste p 2 30 Installation Procedures Shim each location as required to level the reflector (see Figure 31). Continue to measure around antenna again, recording the height of each location mea- sured. As before, shim the low location points to be at the same elevation as the highe[...]

ES45T -R-1 Back Structure 31 Installation Procedures The back structure assembly attaches to the rear of the reflector . The back structure provides stability for the reflector and maint ains the parabolic accuracy of the dish. An example of the assembled back structure is presented in Figure 33. Figure 33 Before assembling the back structure, veri[...]

Ste p 1 32 Installation Procedures Refer to back structure Figure 34 for positioning and orientation det ails. • Apply stick wax (P/N 200852) to A-325 bolt threads before installation to reduce fric- tion. (see page 12) Note: Do not attempt to tighten A-325 hardware prior to tensioning sequence in assem- bly procedure Figure 34 ES45T -R R eflecto[...]

Ste p 2 Ste p 3 33 Installation Procedures Loosely attach tee plates (P/N 202447) to point s B , F and D on convex side of reflector as shown in Figure 35. • Use A-325 ½ x 1-¼ in. bolts, flatwashers and nuts. (see page 12). • Insert bolts from concave side of reflector Figure 35 Loosely attach plates (P/N 49427) to point s A , C and E on conv[...]

Ste p 4 Ste p 5 34 Installation Procedures Loosely attach support angles (P/N 49436) to three tee plates (P/N 202447) as shown in Figure 37. • Use A-325 ½ x 1-¼ in. bolts, flatwashers and nuts. (see page 12) • Install bolt s from concave side of reflector • Angles should be installed with edge in and flat side away from reflector as shown. [...]

Ste p 6 Ste p 7 Ste p 8 Ste p 9 Ste p 10 35 Installation Procedures Loosely attach support angles (P/N 49438) from plates A and C to angle (P/N 49436) from tee plate B with pivot bracket (P/N 300745). Loosely connect support angles (P/N 49438) from plates E and C to angle (P/N 49436) from tee plate D to elevation axis bracket (P/N 300749) as shown [...]

R eflector-to-Mount Assembly (With Cr ane) Ste p 1 Ste p 2 36 Installation Procedures This reflector can be installed on the mount manually or by using a crane. However , Andrew recommends that this procedure be performed using a crane. The following steps provide the procedure for inst alling the reflector to the mount using a crane. Ensure all co[...]

Ste p 3 Ste p 4 37 Installation Procedures Crane should place reflector so that pivot brackets align with support and elevation pivot assembly as shown in Figure 42. Figure 42 Attach pivot bracket s to support and elevation pivot assembly with U-bolts (P/N 9956- 65), ½ in. lockwashers and ½-13 hex nuts as shown in Figures 43 and 44. Figure 43 ES4[...]

Ste p 5 38 Installation Procedures Figure 44 Manually raise reflector to attach remaining end of elevation strut to elevation axis bracket of main triangle assembly as shown in Figures 45 and 46. • Use ¾ x 4-½ in. bolt, lockwasher and nut Figure 45 Figure 46 Y ou have now completed the attachment of the reflector to the tripod ground mount asse[...]

R eflector-to-Mount Assembly (With Hoist Kit) Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 39 Installation Procedures The optional hoist kit (P/N 49080) must be assembled prior to reflector/ backstructure assembly hoisting. Hoist assembly should not be used for antenna elevation angle adjustment. The following step s provide the procedure for in[...]

Ste p 7 Ste p 8 Ste p 9 Ste p 10 40 Installation Procedures Loosely attach support (P/N 49060) and remaining ends of support s (P/N 49061) to cor- responding pick-up assemblies (P/N 49064) using appropriate hardware (P/N 45980-1). Securely tighten all mounting hardware. • Ensure entire hoist assembly is centered on support and elevation pivot ass[...]

Ste p 11 Ste p 12 Ste p 13 41 Installation Procedures Remove small portion of foam padding from reflector p acking crate and install under bottom portion of reflector assembly to prevent reflector damage during hoisting proce- dure. Position man at bottom of reflector/backstructure to guide assembly during hoist- ing procedure. Hoist reflector/back[...]

Ste p 14 Ste p 15 Ste p 16 Ste p 17 42 Installation Procedures Raise lower portion of reflector/backstructure assembly and attach remaining end of ele- vation strut to elevation axis bracket of main triangle assembly . • Use 3/4 x 4-1/2 in (1 14 mm) bolt, lockwasher and nut • Mechanical means or fine adjustment assembly may be utilized to achie[...]

Ele v ation and Azimuth Adjustments Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 Ste p 7 43 Installation Procedures Proper antenna pointing requires specific coarse and fine elevation and azimuth strut length adjustments which can be determined using the graphs provided in Appendix F . Adjustable azimuth and elevation strut s are initially set i[...]

Ste p 8 Ste p 9 Ste p 10 Ste p 11 Ste p 12 Ste p 13 Ste p 14 44 Installation Procedures Attach fine adjustment assembly between adjacent azimuth strut sections as shown in Figure 51 using appropriate brackets, U-bolt s, brass hex nuts, flatwashers and threaded rod. Securely tighten all adjustment assembly hardware. Note: Fine adjustment assembly on[...]

Feed Suppor t Assembly Ste p 1 Ste p 2 45 Installation Procedures By now , you can see that your installation of the 4.5-Meter Earth S tation Antenna is almost complete. The feed system is the last phase of the base inst allation described in this manual. Note: All antenna options (such as feeds, shields, anti-icing, etc.) possess installation inst[...]

ES45T -T -1 R eflector Ste p 1 Ste p 2 46 Installation Procedures The ES45T -T -1 reflector is composed of six precision-formed panels designed for accu- rate strength, and ensures a reliable surface contour that provides exceptional operating characteristics in C-, X- or Ku-frequency bands. Reflector should be assembled on a clear , flat area in f[...]

Ste p 3 Ste p 4 47 Installation Procedures Note: All six reflector segments are identified individually by a two letter designation ( A- B , D-E , etc). Locate the markings on the reflector segment s in order to assemble the reflector in the proper sequence. See Figure 55. Figure 55 Place reflector segment A-B between two setting bands with concave[...]

Ste p 5 Ste p 6 48 Installation Procedures Loosely attach reflector segment s A-B and D-E to diameter setting bands (P/N 49612) with edge joining plates (P/N 49424) and capscrew hardware as indicated in Figure 57. Figure 57 Loosely attach segment A-F to mounting ring hub, diameter setting bands, and segment A-B using edge joining plates (P/N 49424)[...]

Ste p 7 Ste p 8 49 Installation Procedures Figure 58 Loosely attach segment E-F to mounting ring hub, diameter setting bands, and seg- ments A-F and D-E with joining plates (P/N 49424) on panel seams E-E and F-F . Loosely attach joining plates (P/N 49693) on rim seams E-E and F-F . Loosely attach joining plate (P/N 49693) along A-A seam inside refl[...]

Ste p 9 Ste p 10 Ste p 11 50 Installation Procedures S tation an inst aller inside reflector to finger-tighten seam hardware and attach final pan- els as shown in Figure 59. Figure 59 Loosely attach reflector segment B-C to mounting ring hub and diameter setting bands. Use edge joining plate (P/N 49424) on B-B panel seam and joining plate (P/N 4969[...]

Ste p 12 Ste p 13 Ste p 14 Ste p 15 Ste p 16 R eflector Le v eling Procedure Ste p 1 51 Installation Procedures Install final reflector p anel (C-D) by loosely attaching to diameter setting bands and mounting ring hub. Loosely attach p anel seam hardware as installer inside moves reflector segment to enable segment union. Begin attaching correspond[...]

Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 52 Installation Procedures Position theodolite, transit or laser level about 10 feet [3m] from outside perimeter of reflector (see Figure 62). Figure 62 Line of Sight (0.0° Elevation) S teel Rule 0.03-0.06 Inch Increment (0.5-1.0 mm) Pointed Measuring Rod 6’ (1.8 m) Reflector Diameter Setting Band T empora[...]

Ste p 7 Ste p 8 Ste p 9 Ste p 10 Ste p 11 Ste p 12 Ste p 13 R eflector Center Plate Assembly Ste p 1 53 Installation Procedures Position measuring rod point down over temporary supports and on the flat portion of the aperture face as shown in Figures 62 and 63, using theodolite/transit/laser level carefully measure and record relative height of eac[...]

Ste p 2 Feed Strut Assembly Ste p 1 Ste p 2 54 Installation Procedures Figure 65 Pass feed struts (P/N 221491-1) to inst aller underneath for attachment to feed strut brackets. • Use 3/8 x 2-¼ in. bolts, lockwashers and nut s • Secure feed struts together at center af ter attachment to feed strut brackets Y ou have now completed the assembly o[...]

ES45T -T -1 Back Structure Ste p 1 55 Installation Procedures Figure 66 The back structure assembly attached to the rear of the reflector . The back structure provides stability for the reflector and maint ains the parabolic accuracy of the dish. Before assembling the back structure, verify that the appropriate part s are present. The following ste[...]

Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 Ste p 7 Ste p 8 Ste p 9 Ste p 10 56 Installation Procedures Loosely attach tee plates (P/N 202447) and corresponding rib connecting plates (P/N 202444) to points B, C, D, E, and F . • Use A-325 ½ x 1-¼ in. bolts, flatwashers and nuts. (see page 12) • Insert bolts from concave side of reflector CAUTION: [...]

Ste p 11 Ste p 12 Ste p 13 R eflector-T o- Mount Assembly (With Cr ane) Ste p 1 Ste p 2 57 Installation Procedures Check diameter setting bands to ensure they are uniformly taut. If not, check leveling of temporary supports and make necessary adjustment s by adding or subtracting shims until bands are uniformly taut. Begin A-325 hardware tensioning[...]

Ste p 3 Ste p 4 58 Installation Procedures Crane should place reflector so that pivot brackets align with support and elevation pivot assembly as shown in Figure 68. Figure 68 Attach pivot bracket s to support and elevation pivot assembly with U-bolts (P/N 9956- 65), ½ in. lockwashers and ½-13 hex nuts as shown in Figures 69 and 70. Figure 69 ES4[...]

Ste p 5 59 Installation Procedures Attach remaining end of elevation strut to elevation axis bracket of main triangle assem- bly as shown in Figures 71 and 72. • Use ¾ x 4-½ in. bolt, lockwasher and nut Figure 71 Figure 70 Figure 72 Y ou have now completed the attachment of the reflector to the tripod ground mount assembly . Proceed to the Elev[...]

R eflector-T o- Mount Assembly (With Hoist Kit) Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 Ste p 7 60 Installation Procedures The optional hoist kit (P/N 49080) must be assembled prior to reflector/ backstructure assembly hoisting. Hoist assembly should not be used for antenna elevation angle adjustment. The following step s provide the proced[...]

Ste p 8 Ste p 9 Ste p 10 Ste p 11 61 Installation Procedures Securely attach winch assembly (P/N 39532) to lower portion of azimuth axis support (P/N 49634) using supplied U-bolts, lockwashers and nut s as shown in Figure 74. • Keep winch cable aligned with sheaves Figure 74 Begin releasing winch cable. Route cable through both sheaves allowing s[...]

Ste p 12 Ste p 13 Ste p 14 62 Installation Procedures Hoist reflector/backstructure assembly to vertical position until upper joints of main trian- gle assembly contact pipe and straddle two locator bars on support and elevation assembly (P/N 49635) as shown in Figure 75. Figure 75 Install two U-bolt s at each pivot bracket of main triangle assembl[...]

Ste p 15 Ste p 16 Ste p 17 Ele v ation and Azimuth Adjustments Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 63 Installation Procedures Set fine elevation and azimuth strut positions based on the procedure performed in the Elevation and Azimuth Adjustment section. • If fine alignment is not performed at this time, continue the assembly procedure at S t[...]

Ste p 6 Ste p 7 Ste p 8 Ste p 9 64 Installation Procedures Determine required length of azimuth strut to nearest degree increment of desired azimuth setting. Adjust coarse azimuth setting by withdrawing secondary strut section from primary strut to achieve desired strut length. Install four 1/2 inch (13 mm) set screws in holes provided and securely[...]

Ste p 10 Ste p 11 Ste p 12 Ste p 13 Ste p 14 Feed Suppor t/Str ut Assembly Ste p 1 Ste p 2 65 Installation Procedures Set fine elevation and azimuth strut positions by loosening strut set screws and selected out fine adjustment hex nut. T urn corresponding inner hex nut in appropriate direction until required strut length is achieved. Securely tigh[...]

P olarization Adjustment Ste p 1 Ste p 2 Ste p 3 Ste p 4 66 Connect receive LNA output to spectrum analyzer and fine adjust elevation and azimuth strut lengths to achieve maximum signal strength from desired satellite. Loosen four 3/8 x ½ in. set screws in feed support until feed assembly is free to rotate and adjust feed for maximum receive signa[...]

Medium Modular Mount Refer to bulletin 237151C, for Installation Instructions. 67[...]

Ov er view Acquiring A Satellite Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 Ste p 6 Ste p 7 68 Operation Oper a tion After you have completed the assembly of your antenna, you are now ready for it to become operational. In order to operate the earth station antenna, you will need to direct it to the desired satellite adjusting both the elevation and a[...]

Ste p 1 69 While viewing the spectrum analyzer screen, a pure noise signal as shown in Figure 1 will probably be observed. Additionally , some transponder signals may be observed above the noise signal as shown in Figure 2. Figure 1 Figure 2 The following steps provide the procedure for acquiring a satellite. Manually move the antenna in the azimut[...]

Ste p 2 Ste p 3 Ste p 4 Ste p 5 70 Operation The maximum azimuth excursion from the original setting should not exceed ±1.5° or the antenna may begin to access a different satellite. With the antenna positioned in azimuth such that the transponder signals are maxi- mized, follow the same procedure manually moving the antenna in elevation (scannin[...]

Ste p 6 Ste p 7 Ste p 8 Ste p 9 71 Operation Move the antenna in elevation while observing the spectrum analyzer screen. If the sig- nal amplitude increases, decreases 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 signa[...]

Manual Actua tor Assembly R emo val Ste p 1 Ste p 2 Ste p 3 72 Operation Figure 6 After you have successfully acquired the satellite and all adjustment s have been made, the manual actuator should be removed. The following step s provide the procedure for the proper removal of the manual actuator assembly . Remove the manual actuator assembly by fi[...]

Ov er view General Cleaning Electrical Par ts 73 Prev entiv e Maintenance This section contains periodic prevent ative maintenance instructions for the 4.5-Meter Earth S tation Antenna. Included in this section are inspection and preventative mainte- nance procedures including cleaning and lubrication, painting and an operational volt- age/current [...]

Mechanical P ar ts Inspection Local Control/Motor Driv e Controller 74 scraper , stiff brush (bristle, or wire in the case of rust or corrosion), or cloth or com- pressed air at 25 to 40 psi. Any accumulated imbedded dirt, corrosion, grease or oil deposits that require further cleaning may be removed with a bristle or wire brush and a cleaning solv[...]

Antenna 75 • Check all electrical components for dirt, chip s, cracks, breaks, discoloration or other signs of deterioration and damage. A discolored, blistered or burnt condition is evidence of overload. Measure actual value of suspect electrical components and comp are against specified value where applicable. • Check transformer for an exces[...]

76 • Check all electrical components for dirt, cracks, chip s, breaks, discoloration and other signs of deterioration and damage. A discolored, blistered or burnt condition is evidence of overload. • Operate the azimuth and elevation drives as well as the feed rotation in both the plus and minus direction from the local control/motor drive cont[...]

Driv e System V olta g e and Cur rent Checks Ste p 1 Ste p 2 Ste p 3 Ste p 4 77 • Check security of antenna mounting and interconnecting assembly hardware. Be cer- tain all electrical grounding connections (including cross-axis grounding strap s) and intact and secure, not corroded or broken. Thoroughly clean any noticeable corroded portions of g[...]

Ste p 5 Ste p 6 Ste p 7 Ste p 8 P edestal Mount Bearing Pad Adjustment Ste p 1 Ste p 2 Ste p 3 Ste p 4 Ste p 5 78 T urn the ELEV A TION DOWN/UP switch to either position and while the antenna is rot at- ing, carefully use a clamp-on ammeter in accordance with the ammeter manufacturer ’s instructions to take current readings of f each of the power[...]

Preser v ation of Component Par ts Aluminum P ar ts Galv anized Surfaces Lubrication 79 When preserving component part s, refer to the following paragraphs in this section. 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 wind[...]

J ackscrews/Motors Gear Motor/Housing Fill Drain R equirements 80 the application of lubricant to any part s, use a clean cloth and/or bristle brush and remove any old lubricant to prevent an excessive build-up. Remove indicated access plugs from square tube weldment and apply lubricant to panning frame tube assembly and corresponding thrust pads. [...]

81 T able 1. Antenna Lubrication Chart Lube Parts to be Lubricated Action Frequency Service Lube Quantity/ Andrew Point T ype T ype Points Number 1 Elevation jackscrew Lubricate Every 3 Pressure SHC32 1 49208 housing months Fitting 2 Elevation gear motor Inspect Monthly Pipe plugs SHC624 10 ounces 47497 housing fill and drain Change 3 months 3 Azim[...]