Type AT Signal - Alstom

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THIS PAGE INTENTIONALLY LEFT BLANK. P2502, Rev. Apr/08 vi Alstom Signaling Inc.
Introduction 1. SECTION 1 – INTRODUCTION 1.1. SCOPE OF MANUAL This manual is intended to provide the necessary information to maintain and ensure proper operation of the Type AT Signal. The technical material in this manual assumes the reader has a basic knowledge of railroad signaling terminology and basic maintenance principles. 1.2. GENERAL This section briefly describes the components and physical characteristics of a typical Alstom Type AT transit signal, available with two types of light fixtures: • Incandescent Lamp P/N 48088-028-00 • LED Unit P/N 20179-0XX-00 The components and configuration of signals can vary depending on the specific requirements of their locations. Signals can be stacked to produce a multi Aspect signal. The signal can be wall, ceiling or pole mounted through the use of mounting brackets attached to the signal housing. Wall brackets hold a signal securely to a concrete wall or ceiling through the use of concrete bolts. A wall signal can be mounted in either a left or right hand configuration. These mounting configurations are produced by changing the position of the wall mounting bracket attached to the signal housing. Ladders can be provided where required. The Type AT Signal conforms to requirements of the AREMA Signal Manual, Part 7.1.1. P2502, Rev. Apr/08 1–1 Alstom Signaling Inc.
Page 1: Type AT Signal Copyright © 2008 Al
Page 5 and 6: LIST OF EFFECTIVE PAGES P2502, Type
Page 7 and 8: PREFACE NOTICE OF CONFIDENTIAL INFO
Page 9 and 10: ABOUT THE MANUAL This manual is int
Page 11 and 12: MANUAL SPECIAL NOTATIONS In the Als
Page 13 and 14: Topic TABLE OF CONTENTS Page 1. SEC
Page 15 and 16: Description LIST OF FIGURES Page Fi
Page 17: Description LIST OF TABLES Page Tab
Page 21 and 22: Introduction 1.3. PHYSICAL CHARACTE
Page 23 and 24: ` Introduction Table 1-1. Type AT S
Page 25 and 26: Introduction 1.5. LED LIGHT SOURCE
Page 27 and 28: Theory of Operation 2. SECTION 2- T
Page 29 and 30: Theory of Operation 2.3.1. Type AT
Page 31 and 32: Theory of Operation 2.4.1. LED Lamp
Page 33 and 34: Theory of Operation Figure 2-5 is a
Page 35 and 36: Installation 3. SECTION 3 - INSTALL
Page 37 and 38: Installation Figure 3-2. Typical Ce
Page 39 and 40: Preventive Maintenance 4. SECTION 4
Page 41 and 42: Preventive Maintenance 4.2.1. Inspe
Page 43 and 44: Preventive Maintenance Table 4-3. E
Page 45 and 46: Preventive Maintenance 4.2.4. Signa
Page 47 and 48: Troubleshooting 5. SECTION 5 - TROU
Page 49 and 50: Troubleshooting SIGNAL ASPECT DIM O
Page 51 and 52: Corrective Maintenance 6. SECTION 6
Page 53 and 54: ` Corrective Maintenance 6.3. LENS
Page 55 and 56: Corrective Maintenance 6.5. LAMP RE
Page 57 and 58: Corrective Maintenance Table 6-6. A
Page 59 and 60: Corrective Maintenance 6.8. SIGNAL
Page 61 and 62: Corrective Maintenance 6.9. WAYSIDE
Page 63 and 64: Corrective Maintenance 7. SECTION 7
Page 65 and 66: 7.3. LENSES Corrective Maintenance
Page 67 and 68: Corrective Maintenance 7.4. SINGLE
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Corrective Maintenance THIS PAGE IN
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Corrective Maintenance Table 7-3. E
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Corrective Maintenance 7.6. 3 ASPEC
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Corrective Maintenance Table 7-4. E
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Parts Catalog Table 7-5. Example 3
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7.8. LED UNITS Parts Catalog Figure
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Parts Catalog 7.9. 2 ASPECT TYPE AT
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Parts Catalog 7.10. 7 ASPECT TYPE A
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Parts Catalog Table 7-8. Example7 A
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Parts Catalog 7.11. 3 ASPECT TYPE A
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Parts Catalog THIS PAGE INTENTIONAL
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Drawings G Y R ILLUMINATED NO. PLAT
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Drawings A.3. TYPE AT SIGNAL UNIT W
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Drawings G 1 2 Y 1 2 R 1 2 20 1 2 x
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Drawings THIS PAGE INTENTIONALLY LE
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Type AT Signal - Alstom

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