Type AT Signal - Alstom

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Introduction LENS ASSEMBLIES (3) HINGED BACK DOOR NUMBER PLATE ENAMEL OR ILLUMINATED 3 ASPECT SIGNAL HOUSING Figure 1–1. Typical Three Aspect Type AT Signal P2502, Rev. Apr/08 1–2 Alstom Signaling Inc.
Introduction 1.3. PHYSICAL CHARACTERISTICS The Type AT Signal arrangement as well as the aspects and enamel number plate, vary depending on the location requirements. The configuration of the signal and use of illuminated or enamel number plate depends on the requirements of the location. Signal configurations are identified by the signal drawing number. Example configurations are shown and described within this manual. The Type AT 3 Aspect Signal, as shown in Figure 1–1, consists of a housing with hinged door, an illuminated or enamel number plate, three Aspect lens assemblies, and internal electrical components to illuminate the aspects and number plate if so configured. The Type AT Single Aspect Signal is often used in a multi Aspect application. The single aspect signal consists of a housing unit with a hinged door, a single aspect lens assembly, and internal electrical components to illuminate the aspect. This signal is available with the following options: • Mounting: − Wall Right Hand − Wall Left Hand − Column − Pole − Horizontal • Aspect Arrangements: − Red − Yellow − Lunar White − Timing indication (S) − Speed indication (15 or 20) − Blank (metal disk covers lamp compartment) P2502, Rev. Apr/08 1–3 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 and 18: Description LIST OF TABLES Page Tab
Page 19: Introduction 1. SECTION 1 - INTRODU
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
Page 69 and 70: Corrective Maintenance THIS PAGE IN
Page 71 and 72:
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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