EOS MM-12920-1 User manual

EOS Technologies, Inc. • 3160 East Transcon Way, Suite 180 • Tucson AZ 85706 • USA
Tel: [phone] • Fax: [phone] • Web: www.eostech.com
Lick Automated Planet Finder
2.4 Meter Alt-Azimuth Telescope
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 for commercial or any other purposes. This document
may not be copied nor disclosed without prior written approval of EOS Technologies, Inc.
Controlled Document
Confirm revision before using

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: [phone] • Fax: [phone] • Web: www.eostech.com Page ii of 43
DOCUMENT CONTROL
© 2009 EOS Technologies, Inc., Tucson, AZ, USA
This document 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 Stubbe Date: 11/30/2009
Checked: Andrew Carr Date: 11/30/2009
Approved: D. Shelby Stubbe Date: 11/30/2009
Configured: Rose Tharp Date: 11/30/2009
Document Revisions
Issue Date Description Prep Chk Appr
1 11/30/2009 Initial Release DSS AC DSS
Controlled Document
Confirm revision before using

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: [phone] • Fax: [phone] • Web: www.eostech.com Page iii of 43
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION........................................................................ 8
1.1 INTRODUCTION............................................................................................................8
1.2 SCOPE...........................................................................................................................8
1.3 CONFIGURATION.........................................................................................................8
1.4 REFERENCES...............................................................................................................9
1.5 DEFINITIONS AND ACRONYMS..................................................................................9
1.6 CONVENTIONS.............................................................................................................9
1.7 SAFETY.........................................................................................................................9
1.7.1 DESIGNED FOR SAFETY.....................................................................................10
1.7.2 PRECAUTIONS DURING MAINTENANCE...........................................................10
1.7.3 SAFETY FEATURES.............................................................................................11
1.7.3.1 Handles............................................................................................................11
1.7.3.2 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 Observatory Interlock System..................................................12
1.7.3.8 Failsafe Design...............................................................................................12
1.7.4 IDENTIFIED HAZARDS.........................................................................................12
1.7.4.1 Weight and Impact..........................................................................................12
1.7.4.2 Pinch Points....................................................................................................12
1.7.4.3 Cryogenic Gases............................................................................................12
1.7.4.4 Electrical Shock..............................................................................................13
1.7.4.5 Electrostatic Discharge..................................................................................13
1.7.5 SAFETY PRECAUTIONS WHILE IN THE TELESCOPE ENCLOSURE ..............13
1.7.5.1 Emergency Stop Buttons...............................................................................13
1.7.5.2 Determining Why an Emergency Stop Button is Engaged.........................14
1.7.5.3 Investigate Problems Before Continuing.....................................................14
1.7.6 SAFETY INTERLOCKS.........................................................................................14
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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: [phone] • Fax: [phone] • Web: www.eostech.com Page iv of 43
1.7.6.1 Manual Reset ..................................................................................................14
1.7.7 ACCIDENTS OR INCIDENTS................................................................................14
1.8 MODES OF OPERATION............................................................................................15
1.8.1 LOCAL (ON-SITE) MODE .....................................................................................15
1.8.2 REMOTE MODE ....................................................................................................15
1.9 PRECAUTIONS BEFORE, DURING AND AFTER OPERATION...............................15
1.9.1 CHECKING THE OPERATIONAL STATUS OF THE SYSTEM............................16
1.10 GENERAL TELESCOPE SYSTEM INFORMATION...................................................16
1.10.1 SYSTEM POWER REQUIREMENTS....................................................................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.................................................................18
2.2 GENERAL INSPECTION.............................................................................................19
2.2.1 CABLE WEAR.......................................................................................................19
2.2.2 STRUCTURAL FASTENING.................................................................................19
2.2.3 CORROSION .........................................................................................................19
2.2.4 ENVIRONMENT.....................................................................................................19
2.3 TELESCOPE CONTROL CABINET............................................................................20
2.3.1 INDICATOR LAMPS..............................................................................................20
2.3.2 COOLING FANS....................................................................................................20
2.3.3 VOLTAGE CHECK ON DC POWER SUPPLIES ..................................................21
2.4 TESTING EMERGENCY STOP BUTTONS ................................................................21
2.5 ENCODER TAPE CLEANING.....................................................................................22
2.5.1 REQUIRED TOOLS AND EQUIPMENT................................................................22
2.5.2 TIME REQUIRED...................................................................................................22
2.5.3 FREQUENCY.........................................................................................................22
2.5.4 PROCEDURE ........................................................................................................22
2.6 LUBRICATING THE AZIMUTH AND ELEVATION DRIVE BEARINGS.....................23
2.6.1 PURPOSE..............................................................................................................23
2.6.2 REQUIRED TOOLS AND EQUIPMENT................................................................23

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: [phone] • Fax: [phone] • Web: www.eostech.com Page v of 43
2.6.3 TIME REQUIRED...................................................................................................23
2.6.4 FREQUENCY.........................................................................................................23
2.6.5 PROCEDURE FOR AZIMUTH BEARING LUBRICATION ...................................23
2.6.6 PROCEDURE FOR ELEVATION BEARING LUBRICATION...............................24
2.7 CLEANING THE PRIMARY MIRROR (M1) COVERS.................................................24
2.7.1 PURPOSE..............................................................................................................24
2.7.2 RECOMMENDED FREQUENCY...........................................................................25
2.7.3 EQUIPMENT AND TOOLS REQUIRED................................................................25
2.7.4 PROCEDURE ........................................................................................................25
2.8 CLEANING OPTICS....................................................................................................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
2.8.4.1 Purpose...........................................................................................................26
2.8.4.2 Recommended Frequency.............................................................................26
2.8.4.3 Equipment and Tools Required ....................................................................26
2.8.4.4 Procedure........................................................................................................27
2.8.5 CLEANING THE TERTIARY MIRROR (M3)..........................................................27
2.8.5.1 Purpose...........................................................................................................27
2.8.5.2 Recommended Frequency.............................................................................27
2.8.5.3 Equipment and Tools Required ....................................................................27
2.8.5.4 Procedure........................................................................................................27
CHAPTER 3 CORRECTIVE MAINTENANCE.................................................. 28
3.1 RECOATING THE PRIMARY MIRROR ......................................................................28
3.1.1 PURPOSE..............................................................................................................28
3.1.2 RECOMMENDED FREQUENCY...........................................................................28
3.1.3 PROCEDURE FOR REMOVING AND INSTALLING THE PRIMARY MIRROR
(M1)..................................................................................................................28
3.2 REMOVING THE SECONDARY MIRROR (M2) FOR RECOATING ..........................29
3.2.1 PURPOSE..............................................................................................................29

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: [phone] • Fax: [phone] • Web: www.eostech.com Page vi of 43
3.2.2 RECOMMENDED FREQUENCY...........................................................................29
3.2.3 EQUIPMENT AND TOOLS REQUIRED................................................................29
3.2.4 TIME REQUIRED...................................................................................................29
3.2.5 PROCEDURE FOR REMOVING THE SECONDARY MIRROR ASSEMBLY.......29
3.2.6 PROCEDURE FOR REMOVING THE SECONDARY MIRROR FROM THE
SUPPORT........................................................................................................32
3.2.7 PROCEDURE FOR REINSTALLING THE SECONDARY MIRROR TO THE
SUPPORT........................................................................................................33
3.2.8 PROCEDURE FOR REINSTALLING THE SECONDARY MIRROR ASSEMBLY34
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 FOR REMOVING THE TERTIARY MIRROR ASSEMBLY............35
3.3.6 PROCEDURE FOR REMOVING THE TERTIARY MIRROR FROM THE
SUPPORT........................................................................................................37
3.3.7 PROCEDURE FOR REINSTALLING THE TERTIARY MIRROR TO THE
SUPPORT........................................................................................................39
3.3.8 PROCEDURE FOR REINSTALLING THE TERTIARY MIRROR ASSEMBLY.....40
3.4 BALANCING THE TELESCOPE.................................................................................41
3.4.1 PURPOSE..............................................................................................................41
3.4.2 RECOMMENDED FREQUENCY...........................................................................41
3.4.3 TIME REQUIRED...................................................................................................41
3.4.4 PROCEDURE ........................................................................................................41
3.5 OPTICAL ALIGNMENT...............................................................................................43
3.5.1 INDICATION OF FAILURE....................................................................................43
3.5.2 FREQUENCY.........................................................................................................43
3.5.3 PROCEDURE ........................................................................................................43
3.6 STAR MAPPING..........................................................................................................43
3.6.1 INDICATION OF FAILURE....................................................................................43
3.6.2 FREQUENCY.........................................................................................................43
3.6.3 PROCEDURE ........................................................................................................43

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: [phone] • Fax: [phone] • Web: www.eostech.com Page vii of 43
LIST OF FIGURES
Figure 1 M2 Assembly.......................................................................................................30
Figure 2 M2 Dummy 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 Assembly with Baffle Removed...................................................................37
Figure 7 M3 Mirror Mount Assembly Removed from Telescope...................................38
LIST OF TABLES
Table 1 Telescope Preventative Maintenance Schedule..............................................18
Table 2 Inspection and Cleaning of Cooling Fans and Filters.....................................20
Table 3 Telescope Corrective Maintenance Schedule..................................................28

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: [phone] • Fax: [phone] • Web: www.eostech.com Page 8 of 43
Lick Automated Planet Finder
2.4 m Alt-Azimuth Telescope
Maintenance Manual
CHAPTER 1 INTRODUCTION
1.1 INTRODUCTION
The 2.4 meter Alt-Azimuth telescope requires rountine, planned, and corrective maintenance to
keep the telescope in good working condition. All maintenance personnel are required to adhere
to safety precautions while performing maintenance procedures on the telescope. All personnel
present at the observatory must be informed by maintenance personnel whenever any
maintenance procedures are to be performed.
Carelessness may result in damage to the telescope system, or injury and/or death to the
maintenance personnel.
The telescope system is comprised of modules that are large and heavy, and optical
components and equipment that are delicate, expensive, and damage easily. The telescope can
move at any time, 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) which results from the operation, use or maintenance of the telescope
and related systems, including the use of or reliance upon the contents of this manual. Such
operation, use or maintenance of the telescope and related systems, including use of or reliance
upon this manual is at the Customer’s own risk.
Personnel operating, maintaining and performing work on or around the telescope and related
systems should take all reasonable and necessary care for their safety, health and well-being
and the directions, instructions and advice provided in this manual should not be followed as a
substitute for observing safe work methods, or where injury, loss or damage may occur.
1.2 SCOPE
This document describes the plan to maintain the 2.4 meter Alt-Azimuth Telescope. This plan
outlines the philosophy used for designing maintainability into the telescope and identifies the
major maintenance tasks required.
1.3 CONFIGURATION
This manual has been configured as MM-12920-1 and is a designated controlled document
under the EOST Quality System.

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: [phone] • Fax: [phone] • Web: www.eostech.com Page 9 of 43
1.4 REFERENCES
•Assembly Drawings
•Electrical Schematics
•Optical Alignment Procedure ASP-13964
•Primary Mirror Removal and Installation Procedure ASP-13952
•Software User Manual SUM-13948
1.5 DEFINITIONS AND ACRONYMS
•DC: Direct Current
•EOST: EOS Technologies, Inc.
•ESD: Electrostatic Discharge
•ESTOP: Emergency Stop button
•HV: High Voltage
•OEM: Original 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: A yellow caution box alerts the reader to possible damage to
equipment.
Warning
WARNING! A warning box contains information alerting the reader to situations
or circumstances that may cause personal injury or death to
individuals working in the observatory or around the telescope.
1.7 SAFETY
Safety of maintenance personnel is extremely important when servicing the telescope. Safety
equipment should be worn when appropriate. Avoid wearing loose clothing that may get caught
NOTE: The note box contains helpful information about a topic being
dicsussed.

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: [phone] • Fax: [phone] • Web: www.eostech.com Page 10 of 43
in moving parts of the telescope during maintenance. Eye glass straps are recommended for
maintenance personnel wearing eyeglasses when working from heights and around optics.
WARNING! All individuals present in the observatory during maintenance must
be alerted that maintenance procedures are going to be in progress
for the duration of the day.
Telescope and dome operation is very quiet, always observe all
cautions and warnings to prevent damage to equipment or injury to
individuals.
1.7.1 DESIGNED FOR SAFETY
The telescope is designed for safety of personnel and equipment while satisfying performance
requirements. Where the existence of a potential hazard can not be eliminated without
substantial performance or maintenance impact, interlocks 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 be developed to
minimize the risk of damage or injury.
1.7.2 PRECAUTIONS DURING MAINTENANCE
To avoid injury and or death to maintenance personnel and other individuals present in the
observatory, follow the safety measures described below.
WARNING! Alert all personnel at the site that the equipment is undergoing
maintenance.
Wear safety equipment, such as a hard hat (except when working
with optics), steel toed safety shoes and avoid wearing loose
clothing items.
Disconnect power before attempting work or performing
maintenance. “Lock out” and “Tag out” all power sources to
prevent death or injury.
Turn off all power sources before connecting or disconnecting
cables.
Do not attempt to service the system while it is in operational mode.
Install axis locks before attempting to perform maintenance.
Elevation axis locks are not to be used in an out-of-balance
situation. A second safety device must be attached to ensure that
the telescope does not move unexpectedly.