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EOS MM-12920-1, Руководство по техническому обслуживанию и установке

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2.4 m Alt-Azimuth Telescope Maintenance Manual  MM-12920-1 

EOS Technologies, Inc. • 3160 East Transcon Way, Suite 180 • Tucson AZ 85706 • USA 

12/1/2009 

Tel: +1 520 624 6399 • Fax: +1 520 624 1906 • Web: 

www.eostech.com

 

Page 20 of 43 

CAUTION:  During dome maintenance, the telescope can easily become a 

convenient work bench. Service personnel must ensure that any 
equipment placed on the telescope is removed prior to telescope 
operation, as damage to optics or the telescope structure could 
occur. 

2.3 

TELESCOPE CONTROL CABINET 

The telescope control cabinet houses the electronics for the telescope system. 

2.3.1 INDICATOR 

LAMPS 

1.  On a weekly basis, verify that all indicator lamps on the front are operational. 

2.  Press the test button to illuminate all lamps. 

3.  Replace any burned out indicator lamps, as needed. 

2.3.2 COOLING 

FANS 

There are several different types of cooling fans located in the telescope control cabinet that 
require routine inspection and cleaning. Although a monthly inspection and cleaning of fans is 
recommended, environmental conditions may require more frequent cleaning of the fans and 
filter. See Table 2. 

Table 2  Inspection and Cleaning of Cooling Fans and Filters 

Fan / Filter 

Frequency 

Drive amplifier fans 

monthly 

System fan 

monthly 

Inlet filter (bottom of cabinet) 

bi-monthly 

Computer fans 

monthly 

 

1.  Inspect and clean all drive amplifier fans every 30 days (monthly). 

2.  Open the front panel of the telescope control cabinet and examine the two (2) cooling fans 

for the two (2) drive amplifiers located in the encoder planers. These cooling fans exhaust 
heat from the inside of the encoder planar. 

3.  Inspect the two (2) fans in the Elevation and the Azimuth panel. 

4.  On the top of the telescope control cabinet, examine the system fan. 

5.  Test the system fan by applying heat from a heat gun to the thermostat, located inside of the 

telescope control cabinet, to trigger the fan to run when the predetermined temperature 
inside of the cabinet is reached. 

6.  If dust or dirt is present on the grill, vacuum with a soft brush attachment. 

Содержание MM-12920-1

Страница 1: ...scope Maintenance and Installation Manual MM 12920 1 This document and enclosed information is the property of EOS Technologies Inc The information contained herein is confidential and cannot be used...

Страница 2: ...ument and enclosed information remains the property of EOS Technologies Inc Information herein may not be copied nor disclosed without written consent of EOS Management Issue 1 Prepared D Shelby Stubb...

Страница 3: ...2 Lifting Points 11 1 7 3 3 Axis Locks 11 1 7 3 4 Self Sealing Fittings 12 1 7 3 5 Over current Protection Devices 12 1 7 3 6 Connector Uniqueness and Pin Arrangement 12 1 7 3 7 Interface to Observat...

Страница 4: ...REMENTS 16 1 10 2 DC POWER SUPPLIES 16 1 10 3 MOTORS 16 1 10 4 EMERGENCY STOP BUTTON CONNECTIONS 16 1 11 MAINTENANCE CONCEPT 16 CHAPTER 2 PREVENTIVE MAINTENANCE 18 2 1 PREVENTATIVE MAINTENANCE TASKS 1...

Страница 5: ...PTICS 25 2 8 1 PURPOSE 25 2 8 2 EQUIPMENT AND TOOLS REQUIRED 25 2 8 3 CLEANING THE PRIMARY MIRROR 26 2 8 3 1 Recommended Frequency 26 2 8 3 2 Procedure 26 2 8 4 CLEANING THE SECONDARY MIRROR M2 26 2 8...

Страница 6: ...RY MIRROR ASSEMBLY 34 3 3 REMOVING THE TERTIARY MIRROR M3 FOR RECOATING 35 3 3 1 PURPOSE 35 3 3 2 RECOMMENDED FREQUENCY 35 3 3 3 EQUIPMENT AND TOOLS REQUIRED 35 3 3 4 TIME REQUIRED 35 3 3 5 PROCEDURE...

Страница 7: ...my Weight Installed on M2 Focus Stage 31 Figure 3 M2 Assembly with Baffle Holder 32 Figure 4 M2 Assembly with Baffle Holder Removed 33 Figure 5 M3 Assembly with Baffle Installed 36 Figure 6 M3 Assembl...

Страница 8: ...ime therefore all personnel in the observatory must be alert at all times EOST and its related entities take no responsibility and shall not be liable for any injury loss or damage including death whi...

Страница 9: ...ginal Equipment Manufacturer OSS Optical Support Structure OTA Optical Truss Tube Assembly 1 6 CONVENTIONS The following conventions are used in this document to alert the reader Notes Caution CAUTION...

Страница 10: ...locks are employed to minimize the possibility of injury to individuals or damage to equipment In locations where interlocks are impossible or expected to be ineffective warnings and procedures will b...

Страница 11: ...ables from contact with sharp objects Do not kink cables and never allow the cables to come in contact with oil grease hot surfaces or chemicals After maintenance or installation carefully inspect the...

Страница 12: ...ible the telescope has been designed to fail in a safe manner when a fault occurs 1 7 4 IDENTIFIED HAZARDS The following hazards were identified during the conceptual design process 1 7 4 1 Weight and...

Страница 13: ...ring scheduled maintenance 1 7 5 SAFETY PRECAUTIONS WHILE IN THE TELESCOPE ENCLOSURE Follow all safety rules when in the enclosure and be alert Keep a safe distance from the telescope or enclosure dom...

Страница 14: ...Engaged If an Emergency Stop button is engaged do not disengage it before determining the reason for the button being engaged Someone may be working on the telescope and dome or may have discovered a...

Страница 15: ...s 1 8 1 LOCAL ON SITE MODE In local on site mode the user is specifically using the on site control computer and the observatory is controlled in real time via appropriate hardware and software user i...

Страница 16: ...IREMENTS The system power requirements are 120 VAC and 28 VAC RMS 2 phase A backup generator that works with the uninterrupted power supply UPS is being provided by the customer 1 10 2 DC POWER SUPPLI...

Страница 17: ...ance throughout its design lifetime These tasks must be performed at the specified time regardless of whether symptoms are exhibited by the telescope CAUTION Failure to perform preventive maintenance...

Страница 18: ...cope Control Cabinet Indicator Lamps Cooling Fans DC Power supply voltage check section 2 3 15 minutes 5 minutes 5 minutes Weekly Monthly or more often as needed Monthly Emergency Stop Buttons section...

Страница 19: ...markers where possible to identify critical structural fasteners of the assembly enabling service technicians to be able to clearly see fasteners which may become loose over time Tamper proof markers...

Страница 20: ...re routine inspection and cleaning Although a monthly inspection and cleaning of fans is recommended environmental conditions may require more frequent cleaning of the fans and filter See Table 2 Tabl...

Страница 21: ...ch computer perform a visual inspection of the cooling fans monthly With the computer running perform an audio inspection by listening to the sound of the fan 15 If the fan motor sounds as though it i...

Страница 22: ...ned to accrue contaminants on the surface A maximum of four encoder assemblies can be used on the azimuth axis of this telescope 2 5 1 REQUIRED TOOLS AND EQUIPMENT Acetone Optical wipes 2 5 2 TIME REQ...

Страница 23: ...access covers 9 Record preventive maintenance completed in the log book 2 6 LUBRICATING THE AZIMUTH AND ELEVATION DRIVE BEARINGS The drive system for the telescope consists of three roller type bearin...

Страница 24: ...g spaced 90 apart 1 Load the Kluberplex BEM 34 132 grease into the grease gun 2 Access the elevation bearings from either side of the fork NOTE Locating the grease fittings may require the assistance...

Страница 25: ...ook 2 8 CLEANING OPTICS 2 8 1 PURPOSE Dust on the M1 M2 and M3 mirrors will reduce reflectivity and degrade telescope performance The mirrors must be cleaned by qualified personnel on a regular basis...

Страница 26: ...to be performed safely 2 8 3 2 Procedure 1 Either manually or via software control move the telescope to its horizon pointing position and lock it in place using the Elevation stay pin on the Optical...

Страница 27: ...1 Purpose Dust will collect on the tertiary mirror Clean the tertiary mirror whenever the primary and secondary mirrors are cleaned EOST recommends using a CO2 snow cleaning system to clean all optica...

Страница 28: ...recoating is necessary Balancing the Telescope section 3 4 20 30 minutes As required Optical Alignment section 3 5 12 hours As required After mirror recoating and reinstallation of mirrors 3 1 RECOATI...

Страница 29: ...EQUIPMENT AND TOOLS REQUIRED Drawing ASY 5279 Upper Truss Assembly Drawing ASY 5201 M2 QS Focus Assembly M2 shipping container Metric Allen wrenches Powder free latex gloves Dust face mask 6 foot ladd...

Страница 30: ...he orientation of the M2 assembly on the telescope Figure 1 M2 Assembly 6 With one person holding the M2 Baffle Tube COM 13588 in place remove the six M5 SHCS that secure the M2 Baffle Tube to the M2...

Страница 31: ...the Focus Stage and place it in the shipping container or in a safe work location WARNING If the M2 assembly has been removed from the telescope and the M2 counterweight assembly has not been installe...

Страница 32: ...Applying multiple coats may simplify the removal process 3 Place the M2 Assembly securely on blocks leaving enough room to work under the support 4 Remove the steel wire connected to the three safety...

Страница 33: ...g the torque wrench insert and tighten the three M5 SHCS to 22 inch lbs to secure the M2 Mirror to the M2 Attachment Plate 5 While a second person holds half of the M2 Baffle Holder COM 10239 in place...

Страница 34: ...aside 3 Wear a dust mask and powder free latex gloves Remove any jewelry and items from pockets that may fall onto the mirror surface 4 Grip the M2 Mirror Assembly by the outside of the M2 Baffle Hol...

Страница 35: ...remove and re install the M1 M2 and M3 mirrors Tertiary mirror shipping crate Dust masks Latex gloves powder free Metric Allen wrenches Metric Hex Wrenches Short M6 Hex Wrench 3 3 4 TIME REQUIRED 2 h...

Страница 36: ...nd allow it to dry according to the manufacturer recommendations Applying multiple coats may simplify the removal process CAUTION Extreme care is required to prevent contact with the optical surface i...

Страница 37: ...3 3 6 PROCEDURE FOR REMOVING THE TERTIARY MIRROR FROM THE SUPPORT 1 Wear a dust mask and powder free latex gloves Remove any jewelry and items from pockets that may fall onto the mirror surface 2 Pla...

Страница 38: ...le holding each corresponding M3 Mirror Mount Flexure COM 5695 with an M6 Hex Wrench loosen the three M8 Hex Nuts that secure the Flexures to the M3 Mirror Mount see Figure 7 It may be necessary to us...

Страница 39: ...readed ends of the M3 Mirror Mount Flexures Make sure these washers stay in position during the remainder of the assembly process 4 Carefully set the M3 Mirror on the support being careful not to plac...

Страница 40: ...tact with the optical surface if a protective coating is not used as even incidental contact can damage the coating and or surface of the mirror 6 Note the current position of the M3 Rotator and lift...

Страница 41: ...eased 1 Do not operate the motor Open the mirror covers and move the telescope optical support structure OSS The OSS includes everything that rotates as the elevation motor rotates the telescope to th...

Страница 42: ...e telescope OSS should now remain still when placed in any elevation position 11 More accurate balance can be obtained by looking at bi directional motor torque In general the balancing techniques des...

Страница 43: ...An optical alignment is required whenever the Primary Secondary or Tertiary mirrors have been removed and reinstalled 3 5 3 PROCEDURE Refer to ASP 13964 Lick APF Optical Alignment Procedure 3 6 STAR...

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