Type AT Signal
Copyright © 2008 Alstom Signaling Inc.
Operation and Maintenance Manual
P2502
Type AT Signal
Copyright © 2008 Alstom Signaling Inc.
Operation and Maintenance Manual
Alstom Signaling Inc.
P2502, Rev. February 2008, Printed in U.S.A.
LIST OF EFFECTIVE PAGES
P2502, Type AT Signal Operation and Maintenance Manual
ORIGINAL ISSUE DATE:
April 2008
CURRENT REVISION AND DATE:
April 2008
PAGE
CHANGE OR REVISION LEVEL
Cover
Apr/08
Title page
Apr/08
Preface
Apr/08
i thru vi
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1–1 thru 1–8
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2–1 thru 2–8
Apr/08
3–1 thru 3–4
Apr/08
4–1 thru 4–8
Apr/08
5–1 thru 5–4
Apr/08
6–1 thru 6–12
Apr/08
7–1 thru 7–42
Apr/08
A–1 thru A–8
Apr/08
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PREFACE
NOTICE OF CONFIDENTIAL INFORMATION
Information contained herein is confidential and is the property of Alstom
Signaling Incorporated. Where furnished with a proposal, the recipient
shall use it solely to evaluate the proposal. Where furnished to customer, it
shall be used solely for the purposes of inspection, installation or
maintenance. Where furnished to a supplier, it shall be used solely in the
performance of the contract. The information shall not be used or
disclosed by the recipient for any other purposes whatsoever.
FOR QUESTIONS AND INQUIRIES, CONTACT CUSTOMER SERVICE AT
1–800–717–4477
OR
WWW.ALSTOMSIGNALINGSOLUTIONS.COM
ALSTOM SIGNALING INC.
1025 JOHN STREET
WEST HENRIETTA, NY 14586
REVISION LOG
Revision
Date
0
April 2008
P2502, Rev. Apr/08
Description
Original issue
By
Checked
Approved
MAS
RR
NI
Alstom Signaling Inc.
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Alstom Signaling Inc.
ABOUT THE MANUAL
This manual is intended to provide the necessary information to maintain and ensure
proper operation of the Type AT Signal.
The information in this manual is arranged into sections. The title and a brief description
of each section follow:
Section 1 – GENERAL DESCRIPTION: This section gives general information on the
components of the Type AT Signal.
Section 2 – THEORY OF OPERATION: This section gives general information on the
operation of the Type AT Signal.
Section 3 – INSTALLATION: This section describes the field installation and setup of
the Type AT Signal.
Section 4 – PREVENTIVE MAINTENANCE: This section describes the tools,
preventive maintenance procedures, and functional tests used on the Type AT Signal.
The frequency and interval, for the performance of the given information, are also
included. Safety precautions are also provided in this section.
Section 5 – TROUBLESHOOTING: This section describes possible failures/symptoms
along with the corrective action for the Type AT Signal.
Section 6 – CORRECTIVE MAINTENANCE: This section describes the adjustment
and replacement procedures associated with corrective maintenance of the Type AT
Signal. Safety precautions are also provided in this section.
Section 7 – PARTS CATALOG: This section identifies and lists the spare parts
associated with operations of the Type AT Signal.
Appendix A – DRAWINGS: This section has representative circuit drawings along with
an installation and space requirement drawing of the Type AT Signal.
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MANUAL SPECIAL NOTATIONS
In the Alstom manuals, there are three methods used to convey special informational
notations to the reader. These notations are warnings, cautions, and notes. Both
warnings and cautions are readily noticeable by boldface type two lines beneath the
caption.
Warning
A warning is the most important notation to heed. A warning is used to tell the reader
that special attention needs to be paid to the message because if the instructions or
advice is not followed when working on the equipment then the result could be either
serious harm or death. The sudden, unexpected operation of a switch machine, for
example, or the technician contacting the third rail could lead to personal injury or death.
An example of a typical warning notice follows:
WARNING
WHENEVER THE GEAR COVER IS REMOVED DISCONNECT THE
MOTOR ENERGY. OTHERWISE, THE SWITCH MACHINE MAY
OPERATE UNEXPECTEDLY AND POSSIBLY CAUSE PERSONAL
INJURY.
Caution
A caution statement is used when an operating or maintenance procedure, practice,
condition, or statement, which if not strictly adhered to, could result in damage to or
destruction of equipment. A caution statement is also used when personnel could be
surprised if shocked by a circuit operating at a low current. A typical caution found in a
manual is as follows:
CAUTION
Turn power off before attempting to remove or insert circuit boards into a
module. Boards can be damaged if power is not turned off.
Note
A note is normally used to provide minor additional information to the reader to explain
the reason for a given step in a test procedure or to just provide a background detail. An
example of the use of a note follows:
NOTE
A capacitor may be mounted on the circuit board with a RTV adhesive.
Use the same color RTV.
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TABLE OF CONTENTS
Topic
Page
1. SECTION 1 – INTRODUCTION............................................................................. 1–1
1.1. SCOPE OF MANUAL ....................................................................................... 1–1
1.2. GENERAL ........................................................................................................ 1–1
1.3. PHYSICAL CHARACTERISTICS ..................................................................... 1–3
1.3.1. Housing.......................................................................................................... 1–4
1.3.2. Lens Assembly .............................................................................................. 1–5
1.4. INCANDESCENT LIGHT SOURCE ................................................................. 1–6
1.5. LED LIGHT SOURCE....................................................................................... 1–7
2. SECTION 2– THEORY OF OPERATION.............................................................. 2–1
2.1. GENERAL ........................................................................................................ 2–1
2.2. FUNCTIONAL DESCRIPTION ......................................................................... 2–1
2.3. TYPE AT INCANDESCENT SIGNAL FUNCTIONAL DESCRIPTION .............. 2–2
2.3.1. Type AT Incandescent Signal Wiring ............................................................. 2–3
2.4. LED UNIT FUNCTIONAL DESCRIPTION ........................................................ 2–4
2.4.1. LED Lamp Wiring........................................................................................... 2–5
3. SECTION 3 – INSTALLATION.............................................................................. 3–1
3.1. GENERAL ........................................................................................................ 3–1
3.2. SIGNAL MOUNTING........................................................................................ 3–1
4. SECTION 4 – PREVENTIVE MAINTENANCE ...................................................... 4–1
4.1. GENERAL ........................................................................................................ 4–1
4.2. PREVENTIVE MAINTENANCE........................................................................ 4–2
4.2.1. Inspection ...................................................................................................... 4–3
4.2.2. Lens Cleaning................................................................................................ 4–4
4.2.3. Lubrication ..................................................................................................... 4–6
4.2.4. Signal Operational Test ................................................................................. 4–7
5. SECTION 5 – TROUBLESHOOTING.................................................................... 5–1
5.1. GENERAL ........................................................................................................ 5–1
5.2. TROUBLESHOOTING GUIDE ......................................................................... 5–1
6. SECTION 6 – CORRECTIVE MAINTENANCE ..................................................... 6–1
6.1. GENERAL ........................................................................................................ 6–1
6.2. INCANDESCENT LAMP REPLACEMENT....................................................... 6–2
6.3. LENS REPLACEMENT .................................................................................... 6–3
6.4. TRANSFORMER REPLACEMENT .................................................................. 6–4
6.5. LAMP RECEPTACLE REPLACEMENT ........................................................... 6–5
6.6. LED MODULE REPLACEMENT ...................................................................... 6–6
6.7. LED BOARD/ILLUMINATED NUMBER PLATE REPLACEMENT.................... 6–8
6.8. SIGNAL HEAD REPLACEMENT...................................................................... 6–9
6.9. WAYSIDE SIGNAL SITING ............................................................................ 6–11
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TABLE OF CONTENTS (CONT.)
Topic
Page
7. SECTION 7 – PARTS CATALOG ......................................................................... 7–1
7.1. GENERAL ........................................................................................................ 7–1
7.2. EXAMPLE SIGNALS ........................................................................................ 7–1
7.3. LENSES ........................................................................................................... 7–3
7.4. SINGLE ASPECT TYPE AT INCANDESCENT SIGNAL UNIT WITH
TRANSFORMER.............................................................................................. 7–5
7.5. 3 ASPECT TYPE AT INCANDESCENT SIGNAL, CEILING/HORIZONTAL
MOUNT ............................................................................................................ 7–9
7.6. 3 ASPECT TYPE AT INCANDESCENT SIGNAL, WALL MOUNT ................. 7–13
7.7. 3 ASPECT TYPE AT INCANDESCENT SIGNAL, POLE MOUNT ................. 7–17
7.8. LED UNITS..................................................................................................... 7–21
7.9. 2 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE,
POLE MOUNT................................................................................................ 7–23
7.10. 7 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE,
POLE MOUNT................................................................................................ 7–31
7.11. 3 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE,
CEILING/HORIZONTAL MOUNT ................................................................... 7–39
A. APPENDIX A – DRAWINGS .................................................................................A–1
A.1. GENERAL ........................................................................................................ A–1
A.2. TYPE AT INCANDESCENT SIGNAL WIRING DIAGRAMS ............................. A–1
A.3. TYPE AT SIGNAL UNIT WITH LED P/N 20179-0XX-00 WIRING DIAGRAMS A–4
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LIST OF FIGURES
Description
Page
Figure 1–1. Typical Three Aspect Type AT Signal ..................................................... 1–2
Figure 1–2. Typical Three Aspect and Single Aspect Type AT Signal Housings,
Side View .............................................................................................................. 1–4
Figure 1–3. Typical Type AT Signal Active Light Compartment ................................. 1–5
Figure 1–4. Typical Type AT Incandescent Signal ..................................................... 1–6
Figure 1–5. Typical Type AT Signal LED Light Source Unit ....................................... 1–7
Figure 2–1. Typical Type AT Incandescent Signal With Transformers
Circuit Diagram...................................................................................................... 2–2
Figure 2–2. Typical 3 Aspect Type AT Incandescent Signal With Transformers and
Illuminated Number Plate Wiring ........................................................................... 2–3
Figure 2–3. Typical Type AT 3 Aspect LED Signal Wiring Diagram ........................... 2–5
Figure 2–4. Typical Type AT 3 Aspect LED Signal Wiring Diagram (Center Aspect
is Blank) ................................................................................................................ 2–6
Figure 2–5. Typical Type AT LED Single Aspect Signal Wiring Diagram ................... 2–7
Figure 3–1. Typical Wall Mount Type AT Signal ........................................................ 3–2
Figure 3–2. Typical Ceiling (Horizontal) Mount Type AT Signal ................................. 3–3
Figure 3–3. Typical 3 Aspect Pole Mount Type AT Signal ......................................... 3–4
Figure 5–1. Incandescent Signal Aspect Dim or Not Illuminated................................ 5–2
Figure 5–2. LED Signal Aspect Dim or Not Illuminated .............................................. 5–3
Figure 5–3. LED or Illuminated Number Dim or Not Illuminated................................. 5–4
Figure 7–1. Replacement Outer Lenses and Gaskets................................................ 7–3
Figure 7–2. Example Single Aspect Type AT Incandescent Signal Unit With
Transformer, AT007-000-00 .................................................................................. 7–5
Figure 7–3. Example 3 Aspect Type AT Incandescent Signal Unit Without
Transformers, With Illuminated LED Number Plate, Ceiling/Horizontal Mount,
AT000-108-00 ....................................................................................................... 7–9
Figure 7–4. Example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-00 ..................................................................................................... 7–13
Figure 7–5. Example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-00 ..................................................................................................... 7–17
Figure 7–6. LED Unit P/N 20179-0XX-00................................................................. 7–21
Figure 7–7. Example 2 Aspect Type AT Signal Unit With LED Light Source,
Pole Mount, AT100-001-00 ................................................................................. 7–23
Figure 7–8. Example 7 Aspect Type AT Signal Unit With LED Light Source, Pole
Mount, AT100-002-00 ......................................................................................... 7–31
Figure 7–9. Example 3 Aspect Type AT Signal Unit With LED Light Source,
Ceiling/Horizontal Mount ..................................................................................... 7–39
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LIST OF FIGURES (CONT.)
Description
Page
Figure A–1. Typical Single Aspect Type AT Incandescent Signal Wiring Diagram ....A–1
Figure A–2. Typical 3 Aspect Type AT Incandescent Signal Unit With Illuminated
Number plate and Transformers Wiring Diagram ..................................................A–2
Figure A–3. Typical 4 Aspect Type AT Incandescent Signal Unit With Enameled
Number Plate and Transformers Wiring Diagram (Single Aspect Plus 3 Aspect) .A–3
Figure A–4. Typical Single Aspect Type AT Signal With LED Unit P/N 20179-0XX-00
Wiring Diagram......................................................................................................A–4
Figure A–5. Typical 3 Aspect Type AT Signal With LED Unit P/N 20179-0XX-00 Wiring
Diagram.................................................................................................................A–5
Figure A–6. Typical 3 Aspect Type AT Signal With LED Unit P/N 20179-0XX-00 and
Illuminated Number Wiring Diagram......................................................................A–6
Figure A–7. Typical Four Aspect Type AT Signal With LED Unit P/N 20179-0XX-00
Wiring Diagram (Single Aspect Plus and 3 Aspect)...............................................A–7
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LIST OF TABLES
Description
Page
Table 1–1. Type AT Signal Basic Housing Dimensions .............................................. 1–5
Table 4–1.
Table 4–2.
Table 4–3.
Table 4–4.
Table 4–5.
Preventive Maintenance Index ................................................................. 4–2
Inspection Procedures.............................................................................. 4–3
External Lens Cleaning Procedure........................................................... 4–5
Lubrication Procedure .............................................................................. 4–6
Signal Operational Test Procedure .......................................................... 4–7
Table 5–1. Troubleshooting Symbols ......................................................................... 5–1
Table 6–1.
Table 6–2.
Table 6–3.
Table 6–4.
Table 6–5.
Table 6–6.
Table 6–7.
Table 6–8.
Table 6–9.
Corrective Maintenance Procedures ........................................................ 6–1
Incandescent Aspect Lamp Replacement Procedure............................... 6–2
Outer Lens Replacement Procedure ........................................................ 6–3
Signal Transformer Replacement Procedure ........................................... 6–4
Receptacle Replacement Procedure........................................................ 6–5
LED P/N 20179-0XX-XX Module Replacement Procedure ...................... 6–6
LED Board/Illuminated Number Plate Replacement Procedure ............... 6–8
Signal Head Replacement Procedure ...................................................... 6–9
Wayside Signal Siting Procedure ........................................................... 6–11
Table 7–1. Replacement Outer Lenses...................................................................... 7–3
Table 7–2. Example Single Aspect Type AT Incandescent Signal Unit With
Transformer, AT007-000-02 Part Numbers........................................................... 7–7
Table 7–3. Example 3 Aspect Type AT Incandescent Signal Unit Without
Transformers, With Illuminated LED Number Plate, Ceiling/Horizontal Mount,
AT000-108-01 Part Numbers .............................................................................. 7–11
Table 7–4. Example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-01 Part Numbers .............................................................................. 7–15
Table 7–5. Example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-01 Part Numbers .............................................................................. 7–19
Table 7–6. LED Unit Part Numbers .......................................................................... 7–21
Table 7–7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole
Mount, AT100-001-01 Part Numbers .................................................................. 7–27
Table 7–8. Example 7 Aspect Type AT Signal Unit With LED Light Source, Pole
Mount, AT100-002-01 Part Numbers .................................................................. 7–35
Table 7–9. Example 3 Aspect Type AT Signal Unit With LED Light Source,
Ceiling/Horizontal Mount Part Numbers .............................................................. 7–41
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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.
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Introduction
HINGED
BACK DOOR
LENS
ASSEMBLIES (3)
NUMBER PLATE ENAMEL
OR ILLUMINATED
3 ASPECT
SIGNAL HOUSING
Figure 1–1. Typical Three Aspect Type AT Signal
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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)
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Alstom Signaling Inc.
Introduction
1.3.1. Housing
The signal housing is of cast-aluminum construction. Access to the internal parts of the
signal is made through a hinged door at the rear of the housing.
The Type AT 3 Aspect Signal is internally divided into four potentially active light
compartments. Three compartments are used for aspect signals and one for the
number display (number plate, illuminated (incandescent) number or LED number). The
door of the three Aspect signal is equipped with two ventilators to prevent moisture and
heat build-up within the housing and a gasket with sealant to prevent water from
entering the housing.
The Type AT Single Aspect Signal is available with or without an enamel number plate.
The single aspect door has one ventilator. A latch is provided to padlock the door and
prevent unauthorized access.
Housings can be stacked to make 4, 5, 6, 7, or 8 aspect configurations.
VENTILATORS
4 COMPARTMENTS IN
A 3 ASPECT SIGNAL
NUMBER PLATE
Figure 1-2. Typical Three Aspect and Single Aspect Type AT Signal Housings,
Side View
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Alstom Signaling Inc.
Introduction
Table 1–1. Type AT Signal Basic Housing Dimensions
Dimension
3 Aspect
Single Aspect
Height
28.75" (73 cm)
9.75" (24.8 cm)
Width
8.60" (21.8 cm)
8.60" (21.08 cm)
Depth
9.69" (24.6 cm)
9.69" (24.6 cm)
Outer Lens Diameter
5.0" (12.7 cm)
5.0" (12.7 cm)
1.3.2. Lens Assembly
The lens assembly of a Type AT Signal aspect, whether incandescent or LED, consists
of a colored (Green, Yellow, or Red) lens and a mounting ring that holds the lens to the
signal case. See Figure 1–3 for lens detail.
LED LAMP UNIT
TERMINAL POSTS
LAMPS AND LAMP
RECEPTACLES (2)
LENS
GASKETS
LENS
GASKETS
BEZEL
RING
BEZEL
RING
LED UNIT
OUTER
LENS
`
OUTER
LENS
SCREW &
WASHER
SCREW &
WASHER
GASKET
GASKET
LIGHTING
TRANSFORMERS
CENTERLINE OF
OUTER LENS &
LAMP UNIT LENS
TERMINALS
TYPE AT SINGLE ASPECT INCANDESCENT SIGNAL
LED LAMP UNIT
MOUNTING SCREW
& WASHER
TYPE AT SINGLE ASPECT LED SIGNAL
Figure 1–3. Typical Type AT Signal Active Light Compartment
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Alstom Signaling Inc.
Introduction
1.4.
INCANDESCENT LIGHT SOURCE
Each active incandescent light source compartment uses two lamps. Each lamp has a
single filament.
An active aspect or illuminated number plate light compartment contains a lighting
transformer, terminals for power connection, and appropriate lamp receptacles as
shown in Figure 1–4.
LIGHTING
TRANSFORMERS (2)
LAMPS AND
LAMP RECEPTACLES (2)
ASPECT
LENS
ASSEMBLY
TERMINALS
LAMPS AND LAMP
RECEPTACLES (2)
TERMINALS
LIGHTING
TRANSFORMERS (2)
FRONT VIEW
SIDE VIEW
ILLUMINATED
NUMBER PLATE
Figure 1-4. Typical Type AT Incandescent Signal
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Introduction
1.5.
LED LIGHT SOURCE
The LED light source unit P/N 20179-0XX-00 measures 2.2” (5.6 cm) in diameter. It is a
self contained unit; the lens and individual LEDs are not replaceable.
Two secured color coded 300V, 125ºC, 16 AWG jacketed wires 12" (30.5 cm) long with
ring terminals compatible with the AAR terminal posts (.242” O.D. [.61 cm]) are
provided. The AAR terminal posts are provided for field electrical connections.
Figure 1-5. Typical Type AT Signal LED Light Source Unit
The LED lamp units used on this project have the following physical characteristics:
•
Color
•
− Red
− Green
− 20 degree
•
− Yellow
− Lunar White
•
Operating Voltage
− 110 VAC (60Hz)
•
Brightness
− Fixed, Not Adjustable
BackLight
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Light Angle
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Introduction
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Theory of Operation
2. SECTION 2– THEORY OF OPERATION
2.1.
GENERAL
This section contains operating information on the Alstom Type AT Signal along with
diagrams showing power distribution and wiring to the signal.
2.2.
FUNCTIONAL DESCRIPTION
Type AT Signals are controlled externally through relay logic circuits or vital processors.
Depending on the distance of the signal from the relay room, power supplied to the
signal may vary.
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Theory of Operation
2.3.
TYPE AT INCANDESCENT SIGNAL FUNCTIONAL DESCRIPTION
Type AT Incandescent Signals are configured with transformers to operate on fused 60
Hz (ungrounded), 110 VAC power, controlled externally through relay logic circuits.
Depending on the distance of the signal from the power source, the nominal 110 VAC
power supplied to the primary windings of the signal transformers may vary. It must,
however, be between 90 to 130 VAC (60 Hz) for the signal to function properly.
Figure 2–1 is a simplified circuit diagram of a Type AT 3 Aspect Signal with
transformers. One aspect contains two single filament lamps installed in a receptacle
assembly consisting of two non-tapping transformers, two lamp receptacles, and a
terminal block attached to a mounting bracket.
Terminal connection points A, C, and E from terminal blocks within the three signal
aspects, are connected to the signal lighting relay logic circuits. These circuits receive
power through a fused feed, from an energy source in the relay room. The three
aspects, points A, C, and E, are fed from a single fuse. The common 1 and 2 feeds
(points B and F) are not fused. These feeds are connected to the same energy source
but not through the relay logic control circuits. A signal lamp receives the 10 VAC from a
transformer within the signal. Detailed wiring diagrams on specific Type AT Signals are
given in Appendix A.
TERMINAL CONNECTION POINTS
LAMP
TRANSFORMER
10
VAC
A
110
VAC
TRANSFORMER
110
VAC
LAMP
10
VAC
B
ASPECT 1
C
10
VAC
110
VAC
110
VAC
10
VAC
D
ASPECT 2
E
10
VAC
110
VAC
110
VAC
10
VAC
F
ASPECT 3
Figure 2–1. Typical Type AT Incandescent Signal With Transformers Circuit Diagram
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Theory of Operation
2.3.1. Type AT Incandescent Signal Wiring
TERMINAL
BLOCK
TRANSFORMERS
LAMPS
Figure 2–2 is a wiring diagram of a typical Type AT Incandescent 3 Aspect Signal with
transformers. The signal wiring shown in dotted lines represents the field wiring of a
seven conductor, number 14 AWG cable. The internal wiring of lamps and transformers
are represented by solid lines.
Y
110 VAC
R
COMMON (BCX OR ACX)
G
ILLUMINATED
NO. PLATE
BLACK
BCX
ILLUM
R
NO. PLATE
Y
ACX
G
RED
TYPICAL WIRING OF A
LAMP AND TRANSFORMER
Figure 2–2. Typical 3 Aspect Type AT Incandescent Signal With Transformers and
Illuminated Number Plate Wiring
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Theory of Operation
2.4.
LED UNIT FUNCTIONAL DESCRIPTION
The LED Unit P/N 20179-0XX-00 is available in 4 colors:
•
Green LED 20179-008-00
•
Red LED 20179-009-00
•
Yellow LED 20179-010-00
•
Lunar White LED 20179-011-00
This is a single, self-contained device that does not require any field assembly. The
lamp is wired via ring terminals to AAR terminal posts within the signal unit.
Each unit contains an LED board and a power supply board contained in the signal
housing. These housings are replaceable as a unit and are not serviceable.
The LED unit power boards operate from 90 to 130 VAC (60 Hz.
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Alstom Signaling Inc.
Theory of Operation
2.4.1. LED Lamp Wiring
Figure 2–3 is a wiring diagram of a typical three aspect LED Unit P/N 20179-0XX-00
LED signal configured, green, yellow, and red.
The signal wiring shown in dotted lines represents field wiring of multi-conductor
number 14 AWG cable. Signal number is represented by xxx in this example. See
Appendix A for additional example wiring diagrams.
1
G
2
1
Y
2
1
R
2
xxxRG
xxxHG ACX
xxxDG
Figure 2-3. Typical Type AT 3 Aspect LED Signal Wiring Diagram
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Theory of Operation
Figure 2–4 is a wiring diagram of a typical three aspect LED signal (one aspect blank)
configured red, blank, red.
The signal wiring shown in dotted lines represent field wiring of four-conductor number
14 AWG cable.
1
R
2
X
1
R
2
ACX
xxxRG
Figure 2-4. Typical Type AT 3 Aspect LED Signal Wiring Diagram
(Center Aspect is Blank)
P2502, Rev. Apr/08
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Alstom Signaling Inc.
Theory of Operation
Figure 2–5 is a wiring diagram of a typical one aspect LED signal.
The signal wiring shown in dotted lines represent field wiring of two-conductor number
14 AWG cable.
1
L
2
CX
L
Figure 2-5. Typical Type AT LED Single Aspect Signal Wiring Diagram
P2502, Rev. Apr/08
2–7
Alstom Signaling Inc.
Theory of Operation
THIS PAGE INTENTIONALLY LEFT BLANK.
.
P2502, Rev. Apr/08
2–8
Alstom Signaling Inc.
Installation
3. SECTION 3 – INSTALLATION
3.1.
GENERAL
This section describes installation of the Alstom Type AT Signal. If a fault is suspected
upon installation, the maintainer should refer to Section 5 for the proper signal
troubleshooting procedure.
3.2.
SIGNAL MOUNTING
The Type AT Signal can be mounted on a wall, ceiling (horizontal) or pole. The wall and
ceiling mounted signals are mounted using brackets. The pole mounted signal is
mounted on a 3” (7.62 cm) diameter pole. The pole is inserted in and fastened to a cast
aluminum split base. The split base is bolted to a concrete foundation. Example
mounting configurations are shown in Figures 3-1 through 3-3.
Refer to Section 7 for example parts and signal assembly drawings. To determine the
part number to use when ordering a complete signal for your configuration or to obtain
the parts list for your specific configuration, contact your Alstom Signaling Inc.
representative.
P2502, Rev. Apr/08
3–1
Alstom Signaling Inc.
Installation
Figure 3-1. Typical Wall Mount Type AT Signal
P2502, Rev. Apr/08
3–2
Alstom Signaling Inc.
Installation
Figure 3-2. Typical Ceiling (Horizontal) Mount Type AT Signal
P2502, Rev. Apr/08
3–3
Alstom Signaling Inc.
Installation
Figure 3–3. Typical 3 Aspect Pole Mount Type AT Signal
P2502, Rev. Apr/08
3–4
Alstom Signaling Inc.
Preventive Maintenance
4. SECTION 4 – PREVENTIVE MAINTENANCE
4.1.
GENERAL
This section describes preventive maintenance and testing for the Alstom Type AT
Signals. If a fault is suspected as a result of this maintenance, the maintainer should
refer to Section 5 for the proper signal troubleshooting procedure.
Preventive maintenance procedures deal with inspection, cleaning, and preventive
maintenance (PM) checks. PM checks are performed to ensure proper equipment
operation based on specific tolerances. These checks identify and isolate possible
malfunctions.
Corrective maintenance, at the field service level, is intended to restore malfunctioning
equipment to its normal operating condition as quickly as possible. Corrective
maintenance procedures including component replacement, voltage adjustments, and
wayside sighting are provided in Section 6.
P2502, Rev. Apr/08
4–1
Alstom Signaling Inc.
Preventive Maintenance
4.2.
PREVENTIVE MAINTENANCE
Table 4–1 lists the typical preventive maintenance procedures for the Type AT Signal.
The Interval column gives the recommended frequency of procedures. The
Maintenance Action column lists the preventive maintenance procedure to be performed
at the prescribed interval. The Reference column lists the table number containing the
procedure.
Table 4–1. Preventive Maintenance Index
Interval
Maintenance Action
Reference
Monthly
Periodic Inspection
Table 4–2
Monthly
External Lens Cleaning
Table 4–3
Quarterly
Door Handle, Hinge and Latch Lubrication
Table 4–4
As Needed
Signal Operational Test
Table 4–5
WARNING
ABIDE BY ALL OPERATIONAL AND SAFETY RULES WHEN
ENTERING AND WORKING IN THE RIGHT OF WAY.
P2502, Rev. Apr/08
4–2
Alstom Signaling Inc.
Preventive Maintenance
4.2.1. Inspection
The Inspection Procedure can be performed any time personnel are in close proximity
to the signal. Follow the inspection procedures as outlined in Table 4–2, in the order
given. If required, take the corrective actions described to be sure the signal is properly
serviced.
Table 4–2. Inspection Procedures
Step
Procedure
Action
1
Inspect cases for scratches, large dents,
cracks, warped doors, or other obvious
mechanical damage.
Paint scratches and replace
excessively damaged parts.
2
Check for loose hardware or loose
connections.
Tighten.
3
Inspect interior of signal housing for
excessive dirt, dust, or foreign objects.
Remove foreign objects. Clean
case with damp lint-free cloth.
Clean lens.
4
Inspect wiring and cables for broken or brittle Replace wire or cable.
wires or cracked insulation.
5
Verify each lamp illuminates when energized
and check for proper brightness
Refer to Troubleshooting
Section 5.
6
Inspect for excessive dirt or dust on lens
Clean external lens; see Table
4–3.
7
Inspect for cracked or broken external lens.
Replace lens, as required, see
corrective maintenance, Table
6–3.
8
Inspect vent screen in door for air blockage.
Clean screen with brush.
9
Inspect door handle, hinges and latch.
Lubricate as required, see Table
4–4.
10
Inspect grounding of signal. (When
Applicable)
Clean and tighten connections.
11
Inspect condition of door gasket(s) (1 per
door).
Replace damaged gasket.
P2502, Rev. Apr/08
4–3
Alstom Signaling Inc.
Preventive Maintenance
4.2.2. Lens Cleaning
Clean lenses any time an inspection reveals the need for cleaning.
CAUTION
Do not look directly into an illuminated lamp at close range.
Tools required for lens cleaning include:
•
Cleaners such as Brillianize (The Brillianize Company), Novus Plastic Polish No. 1
(Novus Plastic Polish Ltd.) or equivalent plastic cleaner and polish approved for use
on polycarbonate and Plexiglas® lenses
NOTE
If no other cleaner is available, use a solution of one part mild dishwashing
liquid to 50 parts water. Rinse each lens with clean water and dry
immediately with a damp chamois.
•
Pump or spray dispenser
•
Damp chamois
CAUTION
Never use an abrasive to clean a lens.
Do not use a dry chamois on a dry lens; this prevents accidental
scratching of the lens. Do not use a cleaner with ammonia; this type of
cleaner may attack the lens material.
P2502, Rev. Apr/08
4–4
Alstom Signaling Inc.
Preventive Maintenance
Table 4–3. External Lens Cleaning Procedure
Step
Procedure
1
WARNING
USE A SAFETY BELT WHEN THE CLEANING LENSES OF ANY
POLE MOUNTED UNIT WHILE STANDING ON LADDER STEPS.
WARNING
DO NOT LOOK DIRECTLY INTO AN ILLUMINATED LAMP AT
CLOSE RANGE.
Spray lens.
2
Wipe lens with a damp chamois.
P2502, Rev. Apr/08
4–5
Alstom Signaling Inc.
Preventive Maintenance
4.2.3. Lubrication
Hinges on doors, door handles, and padlocks are lubricated with lightweight mineral
based oil (Mobil Aero HFA or equivalent).
Table 4–4. Lubrication Procedure
Step
1
Action
Sparingly oil door hinges, locking eyebolt, and any padlocks used.
LUBRICATE
LUBRICATE
2
Wipe off excess oil.
P2502, Rev. Apr/08
4–6
Alstom Signaling Inc.
Preventive Maintenance
4.2.4. Signal Operational Test
The Signal Operational Test verifies the visibility of the signal. If an indication is not met,
proceed to Troubleshooting, Section 5. This operational test that should be performed
when:
•
a signal malfunction is suspected
•
the signal or one of its components has been repaired
•
the signal or one of its components has been replaced
WARNING
DO NOT LOOK DIRECTLY INTO AN ILLUMINATED LAMP AT CLOSE
RANGE.
Table 4–5. Signal Operational Test Procedure
Step
Action
1
Call each signal aspect and verify the correct LED module is lit.
2
From a position 300 feet in approach to the signal and six feet over the top
of the running rail, view signal at stop. Aspect must be clearly visible.
3
If any viewed signal aspect is dim or not illuminated refer to Section 5 for
Type AT Signal troubleshooting.
P2502, Rev. Apr/08
4–7
Alstom Signaling Inc.
Preventive Maintenance
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
4–8
Alstom Signaling Inc.
Troubleshooting
5. SECTION 5 – TROUBLESHOOTING
5.1.
GENERAL
Troubleshooting information is given in the form of a fault isolation flowchart provided in
Figure 5–1. The chart begins with the malfunction symptoms and, based on
observations and tests by the maintainer, the chart branches out to isolate probable
causes of the malfunction.
Troubleshooting flowchart symbols are explained in Table 5–1.
5.2.
TROUBLESHOOTING GUIDE
The guide gives instructions on how to sequentially do a series of checks or tests,
resulting in a practical repair solution. It is important to follow the instructions in the
sequence given.
Table 5–1. Troubleshooting Symbols
Symbol
Explanation
Malfunction statement as derived from operator's report.
Basic instruction for preparation of a test, procedure, or
observation. The action taken results in a diagnostic
decision.
Result from previous action, which is answered yes or no. If
result is within tolerance, answer yes. If not, answer no. Do
not consider any gray areas between yes and no.
Final step of instructions involving corrective measures.
Reference publication indicates suspected problem area.
P2502, Rev. Apr/08
5–1
Alstom Signaling Inc.
Troubleshooting
SIGNAL ASPECT
DIM OR NOT ILLUMINATED
CHECK CONDITION OF
LAMPS AND LAMP
RECEPTACLES
(SEE NOTE 1)
YES
NO
OK?
CHECK FOR 110 VAC
AT SIGNAL LIGHTING
TRANSFORMER
PRIMARY
(SEE NOTE 2)
REPLACE
LAMPS AND/OR
RECEPTACLES
YES
NO
OK?
CHECK FOR 10 VAC
AT SIGNAL LIGHTING
TRANSFORMER
SECONDARY
(SEE NOTE 3)
YES
OK?
CHECK FOR 10 VAC
AT ASPECT
RECEPTACLES AND
TERMINAL BLOCK
(SEE NOTE 3)
CHECK
CONDITION
OF POWER
FEED FUSES
YES
NO
OK?
REPLACE
TRANSFORMER
NO
REPLACE
FUSES
TROUBLESHOOT
110 VAC POWER
SUPPLY AND
FIELD WIRING
NOTES:
YES
REPLACE
LAMP AND
CLEAN LENS
OK?
NO
1. FOR A THREE ASPECT SIGNAL, DETERMINE
WHETHER SIGNAL IS CONDITIONED TO CLEAR OR TO
STOP BEFORE CHECKING LAMP CONDITION.
2. FOR A THREE ASPECT SIGNAL WITHOUT AN
INTERNAL SIGNAL LIGHTING TRANSFORMER, CHECK
SIGNAL LIGHTING TRANSFORMER IN CASE.
REPLACE/REPAIR
LAMP WIRING AS
REQUIRED
3. FOR SIGNALS WITHOUT AN INTERNAL
TRANSFORMER, THE OUTPUT VOLTAGE AT SIGNAL
LIGHTING TRANSFORMER SECONDARY MAY BE
HIGHER THAN 10 VAC TO COMPENSATE FOR
DISTANCE BETWEEN SIGNAL AND TRANSFORMER.
Figure 5–1. Incandescent Signal Aspect Dim or Not Illuminated
P2502, Rev. Apr/08
5–2
Alstom Signaling Inc.
Troubleshooting
SIGNAL ASPECT
DIM OR NOT ILLUMINATED
NOTE:
1.
CHECK CONDITION OF LED
LAMP UNIT RING TERMINAL
CONNECTION TO THE
LED SIGNAL TERMINAL
YES
DETERMINE THE SIGNAL
CONTROL CONDITION BEFORE
CHECKING LED INTEGRITY.
NO
OK?
TIGHTEN
CONNECTION OR
REPLACE TERMINALS
AS NEEDED
CHECK FOR CORRECT
VOLTAGE AT LED
TERMINAL POSTS
YES
NO
OK?
CHECK
CONDITION
OF POWER
FEED FUSES
REPLACE
LED MODULE
YES
OK?
NO
REPLACE
FUSES
CHECK FOR
CORRECT VOLTAGE AT
SIGNAL LIGHTING
POWER SUPPLY
IN RELAY ROOM
YES
OK?
NO
TROUBLESHOOT
POWER
DISTRIBUTION
TROUBLESHOOT
AND REPAIR
FIELD WIRING
Figure 5-2. LED Signal Aspect Dim or Not Illuminated
P2502, Rev. Apr/08
5–3
Alstom Signaling Inc.
Troubleshooting
SIGNAL ASPECT
DIM OR NOT ILLUMINATED
NOTE:
1.
CHECK CONDITION OF LED
LAMP UNIT RING TERMINAL
CONNECTION TO THE
LED SIGNAL TERMINAL
YES
DETERMINE THE SIGNAL
CONTROL CONDITION BEFORE
CHECKING LED INTEGRITY.
NO
OK?
TIGHTEN
CONNECTION OR
REPLACE
TERMINALS AS
NEEDED
CHECK FOR CORRECT
VOLTAGE AT LED
TERMINAL POSTS
YES
NO
OK?
REPLACE LED
BOARD/
ILLUMINATED
NUMBER PLATE
CHECK
CONDITION
OF POWER
FEED FUSES
YES
OK?
NO
REPLACE
FUSES
CHECK FOR
CORRECT VOLTAGE
AT SIGNAL LIGHTING
POWER SUPPLY
IN RELAY ROOM
YES
OK?
TROUBLESHOOT
AND REPAIR
FIELD WIRING
NO
TROUBLESHOOT
POWER
DISTRIBUTION
Figure 5–3. LED or Illuminated Number Dim or Not Illuminated
P2502, Rev. Apr/08
5–4
Alstom Signaling Inc.
Corrective Maintenance
6. SECTION 6 – CORRECTIVE MAINTENANCE
6.1.
GENERAL
Corrective maintenance, at the field level, is intended to restore proper operation to
malfunctioning equipment by replacing components found to be faulty through the
troubleshooting procedures described in Section 5 and the preventive maintenance
procedures described in Section 4.
This section contains procedures for replacing the Type AT Signal lamps, transformers,
receptacles, LED modules and lenses used in the various light source versions of the
signals as well as signal head replacement and wayside signal siting procedures, as
listed in Table 6–1.
Table 6–1. Corrective Maintenance Procedures
Interval
Periodically, as
determined by local
authorities
Maintenance Action
Reference
Incandescent Lamp Replacement
Table 6–2
As Needed
Outer Lens Replacement
Table 6–3
As Needed
Transformer Replacement (If used)
Table 6–4
As Needed
Lamp Receptacle Replacement
(For Incandescent Versions of the AT Signal Only)
Table 6–5
LED Unit P/N 20179-0XX-XX Replacement
Table 6–6
As Needed
LED Board/Illuminated Number Plate Replacement
Table 6–7
As Needed
Signal Head Replacement
Table 6–8
As Needed
Wayside Signal Siting
Table 6–9
As Needed or every
43,800 hours
WARNING
VERIFY THAT POWER IS REMOVED FROM THE SIGNAL UNIT PRIOR
TO PERFORMING ANY CORRECTIVE MAINTENANCE PROCEDURE.
WARNING
ABIDE BY ALL OPERATIONAL AND SAFETY RULES WHEN
ENTERING AND WORKING IN THE RIGHT OF WAY.
P2502, Rev. Apr/08
6–1
Alstom Signaling Inc.
Corrective Maintenance
CAUTION
Do not look directly into an illuminated light source at close range.
CAUTION
Allow incandescent lamps to cool before touching them.
6.2.
INCANDESCENT LAMP REPLACEMENT
Incandescent lamps should not be allowed to burn themselves out. Replace aspect
lamps according to the Authority's schedule, using the procedure listed in Table 6–2.
Table 6–2. Incandescent Aspect Lamp Replacement Procedure
Step
Procedure
1
Remove power to signal by removing power feed fuses. (Refer to circuit
drawings for location and identity of power feed fuses.)
2
Remove padlock and open rear door.
3
Press lamp into socket and turn counter-clockwise. Remove lamp from socket
and discard. Repeat for second lamp.
4
Align bayonet pins on replacement lamp with slots in socket. Push lamp into
socket. Turn lamp 1/4 turn clockwise. Release lamp. Repeat for second lamp.
5
Repeat steps 3 and 4 for additional light compartments.
6
Reapply power to the signal by reinstalling the power feed fuses.
7
Verify lamp operation per Signal Operational Test, Table 4–5.
8
Close rear door. Re-install and lock padlock.
P2502, Rev. Apr/08
6–2
Alstom Signaling Inc.
Corrective Maintenance
6.3.
LENS REPLACEMENT
Replace an aspect light lens using the procedure listed in Table 6–3 in the sequence
given. There is no need to re-focus the signal after a lens is replaced. Refer to the
exploded view of a lens assembly shown in Section 6.
There is no need to refocus the signal after a lens is replaced.
Table 6–3. Outer Lens Replacement Procedure
Step
Procedure
1
Remove power to signal by removing power feed fuses. (Refer to circuit
drawings for location and identity of power feed fuses.)
2
Remove padlock and open rear door.
3
Remove four screws securing lens assembly to signal case. Lens and lens ring
are released.
LED LAMP UNIT
TERMINAL POSTS
LAMPS AND LAMP
RECEPTACLES (2)
LENS
GASKETS
LENS
GASKETS
BEZEL
RING
BEZEL
RING
LED UNIT
OUTER
LENS
`
OUTER
LENS
SCREW &
WASHER
SCREW &
WASHER
GASKET
GASKET
LIGHTING
TRANSFORMERS
CENTERLINE OF
OUTER LENS &
LAMP UNIT LENS
TERMINALS
TYPE AT SINGLE ASPECT INCANDESCENT SIGNAL
P2502, Rev. Apr/08
6–3
LED LAMP UNIT
MOUNTING SCREW
& WASHER
TYPE AT SINGLE ASPECT LED SIGNAL
Alstom Signaling Inc.
Corrective Maintenance
Table 6–3. Outer Lens Replacement Procedure (Cont.)
Step
Procedure
4
Remove the bezel ring, gaskets and outer lens from the housing.
5
Remove the outer lens and replace outer lens gasket.
6
Replace outer lens, verifying that the outer lens gasket is uniformly in place
against the signal case. Replace gaskets if they are not in good condition.
7
Reinstall the bezel ring, gaskets and outer lens from the housing.
8
Tighten the 4 screws holding bezel ring, gaskets and outer lens to the housing.
9
Reapply power to the signal by reinstalling the power feed fuses.
10
Verify lamp operation per Signal Operational Test, Table 4–5.
11
Close rear door. Reinstall and lock padlock.
6.4.
TRANSFORMER REPLACEMENT
Replace signal transformer using the procedure listed in Table 6–4 in the sequence
given.
Table 6–4. Signal Transformer Replacement Procedure
Step
Procedure
1
Remove power to signal head by removing power feed fuses. (Refer to circuit
drawings for location and identity of power feed fuses.)
2
Remove padlock and open rear door.
3
Identify, tag, and disconnect wires of transformer.
4
Remove the two screws securing transformer to receptacle bracket and remove
transformer.
5
Install new transformer and reconnect wires as tagged.
6
Reapply power to the signal by reinstalling the power feed fuses.
7
Verify lamp operation per Signal Operational Test, Table 4–5.
8
Close rear door. Reinstall and lock padlock.
P2502, Rev. Apr/08
6–4
Alstom Signaling Inc.
Corrective Maintenance
6.5.
LAMP RECEPTACLE REPLACEMENT
A lamp receptacle can be replaced using the procedure listed in Table 6–5, as long as
the mounting bracket is not moved or replaced. Moving or replacing the mounting
bracket effects the horizontal and vertical position of the lamp, as well as lamp distance
from the lens. The lamp position controls the illuminating quality of an aspect.
Should an aspect lamp receptacle be defective and warrant replacement, then the
entire receptacle unit should be removed and replaced. Since the horizontal and vertical
position of the lamp receptacle, as well as the distance of the lamp receptacle distance
from the lens, controls the illuminating quality of an aspect, care should be taken to
position the new receptacle unit in the same position as the replaced unit.
The illuminating quality of an aspect is changed through horizontal and vertical position
adjustments made to the signal head lamp receptacle unit while viewing the aspect
approach from a distance of up to 300 feet and about 6 feet above the running rail. A
formal test specification (Alstom specification number ATS-10Q-28) exists for shop use.
This specification may be used in field locations.
Table 6–5. Receptacle Replacement Procedure
Step
Procedure
1
Remove power to signal head by removing power feed fuses. (Refer to circuit
drawings for location and identity of power feed fuses.)
2
Remove padlock and open rear door.
3
Identify, tag, and disconnect wires from the lamp receptacle.
4
Remove lamp from receptacle and screws securing receptacle to the receptacle
bracket.
5
Remove receptacle and install new receptacle.
6
Reconnect wires as tagged on new lamp receptacle.
7
Reapply power to the signal by reinstalling the power feed fuses.
8
Verify lamp operation per Signal Operational Test, Table 4–5.
9
Close rear door. Reinstall and lock padlock.
P2502, Rev. Apr/08
6–5
Alstom Signaling Inc.
Corrective Maintenance
6.6.
LED MODULE REPLACEMENT
LED P/N 20179-0XX-XX modules should be replaced before the end of their life
expectancy. Replace LED modules as determined by the local authorities. LED module
life is approximately 43,800 hours. Use the procedure provided in Table 6–6 to replace
the LED module.
Table 6–6. LED P/N 20179-0XX-XX Module Replacement Procedure
Step
Action
1
Remove power to the signal by removing its power feed fuses. (Refer to circuit
drawings for location of power feed fuses.)
2
Remove padlock and open rear door.
3
Verify that field wires connected to the signal head are tagged or tag, as
necessary.
4
Disconnect the field wiring from the LED Signal Terminal Posts.
LED LAMP UNIT
AAR TERMINAL POSTS
LENS
GASKETS
BEZEL
RING
LED
LAMP
UNIT
C
L
OUTER
LENS
SCREW &
WASHER
GASKET
CENTERLINE OF
OUTER LENS &
LAMP UNIT LENS
P2502, Rev. Apr/08
6–6
LED LAMP UNIT
MOUNTING SCREW
& WASHER
Alstom Signaling Inc.
Corrective Maintenance
Table 6–6. AT LED Unit P/N 20179-0XX-XX Replacement Procedure (Cont.)
Step
Action
5
Remove the fasteners holding the LED lamp unit to the housing mounting
brackets.
6
Remove the LED lamp unit.
7
Remove retaining fasteners and standoffs from old LED lamp unit mounting
bracket.
8
Install retaining fasteners and standoffs onto new LED lamp unit mounting
bracket.
NOTE
Use the same mounting holes in the new LED lamp unit mounting
bracket as were used in the old unit to ensure the unit can be
mounted and aligned properly.
9
Place the new LED lamp unit into position.
10
Tighten the fasteners holding the LED lamp unit to the housing brackets.
11
Reconnect the field wires to the LED lamp unit AAR terminal posts.
12
Repeat steps 3 through 11 for any additional LED lamp units requiring
replacement.
13
Reapply power to the signal by reinstalling the power feed fuses.
14
Verify lamp operation per Signal Operational Test, Table 4–5.
15
Close rear door. Reinstall and lock padlock.
P2502, Rev. Apr/08
6–7
Alstom Signaling Inc.
Corrective Maintenance
6.7.
LED BOARD/ILLUMINATED NUMBER PLATE REPLACEMENT
Replace the LED board/illuminated number plate unit using the procedure listed in
Table 6–7 in the sequence given.
Table 6–7. LED Board/Illuminated Number Plate Replacement Procedure
Step
Action
1
Remove power to the signal by removing its power feed fuses. (Refer to circuit
drawings for location of power feed fuses.)
2
Remove padlock and open rear door.
3
Identify and disconnect LED board wires from terminal in signal head housing.
4
Remove the four screws securing the LED board/illuminated number plate to the
signal housing.
5
Install the new LED board/illuminated number plate to the signal housing.
6
Reconnect LED board wires to terminal in signal head housing.
7
Apply power to signal by replacing power feed fuses.
8
Perform Signal Operational Test, Table 4–5.
9
Close rear door. Reinstall and lock padlock.
P2502, Rev. Apr/08
6–8
Alstom Signaling Inc.
Corrective Maintenance
6.8.
SIGNAL HEAD REPLACEMENT
The signal head replacement procedure provided in Table 6–8 applies to the pole, wall,
and ceiling mounted signal examples provided in this manual. Your installation may
vary.
CAUTION
Signal heads are heavy. Stand clear of falling signal heads or obtain help
to hold the signal head during removal so that it does not fall on you. The
use of a rope and pulley or a come-along is recommended to raise and
lower the signal.
Table 6–8. Signal Head Replacement Procedure
Step
Procedure
1
Remove the power to the signal head by removing the power feed fuses. (Refer
to the circuit drawings for location and identity of the power feed fuses in the
relay room.)
2
Remove the padlock and open rear door.
3A
Pole mounted signal head removal:
Identify, tag, and disconnect the wires contained in the signal head that connect
to wires in the pole. Loosen the bolts on the signal head mounting socket and lift
the signal head off.
P2502, Rev. Apr/08
6–9
Alstom Signaling Inc.
Corrective Maintenance
Table 6–8. Signal Head Replacement Procedure (Cont.)
Step
Procedure
3B
Wall or ceiling mounted signal head removal:
Disconnect the conduit; verify that wires connected to the signal head are
tagged or tag, as necessary. Disconnect wires.
Remove the bottom two bolts that secure the signal head to the wall; then
remove the top two bolts, and lower the signal head to the ground, using caution
to remain clear of the lowered equipment. Let the cable come out of the signal
head.
4
If signal is equipped with an enamel number plate, detach plate from the
removed signal head and secure it to the replacement signal head. Replace
number plate gaskets as needed.
5
Secure the replacement signal head to the mounting by reversing the procedure
used to remove the replaced signal head, as follows:
Pole mounted: Feed the cable through the replacement signal head. Lower the
signal head onto the pole and tighten the bolts on the signal head mounting
socket. Reconnect the wires tagged in Step 3A.
Wall mounted: Feed the cable through the replacement signal head. Raise the
signal head into position and secure to the wall using the four bolts removed in
Step 3. Replace the conduit. Reconnect the wires tagged in Step 3B.
6
Reapply power to the signal by reinstalling the power feed fuses.
7
Verify lamp operation per Signal Operational Test, Table 4–5.
8
Complete the Wayside Signal Siting provided in Table 6–9.
9
Close rear door. Reinstall and lock padlock.
P2502, Rev. Apr/08
6–10
Alstom Signaling Inc.
Corrective Maintenance
6.9.
WAYSIDE SIGNAL SITING
After installing a new signal head, the procedure in Table 6–9 is to be performed to
ensure that the oncoming train operator properly sees the signal.
Table 6–9. Wayside Signal Siting Procedure
Step
Procedure
1
Sight the signal head starting from a position 300 ft (91.44 m) in approach to the
signal and 6 ft (1.83 m) over the top of the running rail (use the running rail
located beneath the train operator). Sight the signal at 30 ft (9.14 m) intervals
moving towards the signal.
Where the track in approach to the signal is not tangent, sight the signal
throughout a 150 ft (45.72 m) approach distance.
Record the sighting distance used on the data sheet for future reference.
2
Verify that the signal is properly aligned for optimum visibility of the illuminated
signal aspect throughout the 300 ft (91.44 m) approach distance.
3
Verify that the illuminated signal aspect is continuously readily readable
(distinguishable from the non-illuminated signal heads without glare) throughout
the 300 ft (91.44 m) approach distance.
4
Verify that there is an unobstructed (clear) view of the illuminated signal aspect
throughout the 300 ft (91.44 m) approach distance.
5
Perform steps 1 through 4 for each signal aspect in the signal under test.
6
Repeat this procedure for each signal in the location under test.
Should an aspect appear to dim when viewing the aspect on the approach from a
distance of up to 300 ft (91.44 m) and about 6 ft (1.83 m) above the running rail, follow
the troubleshooting procedure(s) in Section 5.
P2502, Rev. Apr/08
6–11
Alstom Signaling Inc.
Corrective Maintenance
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
6–12
Alstom Signaling Inc.
Corrective Maintenance
7. SECTION 7 – PARTS CATALOG
7.1.
GENERAL
This section describes and shows the main component replacement parts for example
Type AT Signals.
Replacement parts shown are the lowest level replaceable unit (LLRU) that can be
ordered. The LLRU is a component part that can be easily removed and replaced
without using special tools or equipment.
7.2.
EXAMPLE SIGNALS
The basic signal cases include single aspect and three aspect versions. These two
basic cases are combined in various configurations to also obtain up to 9 aspects in a
single signal. The three aspect signal case is configured with or without an LED or
enameled number plate.
To determine the part number to use when ordering a complete signal for your
configuration or to obtain the parts list for your specific configuration, contact your
Alstom Signaling Inc. representative.
•
Figure 7–1 shows the Type AT Signal Outer Lens and Gaskets
•
Figure 7–2 shows an example Single Aspect Type AT Incandescent Signal Unit
drawing
•
Figure 7–3 shows an example 3 Aspect Type AT Incandescent Signal Unit with LED
Number Plate, Ceiling/Horizontal Mount, AT000-108-01
•
Figure 7–4 shows an example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-01
•
Figure 7–5 shows an example 3 Aspect Type AT Incandescent Signal Unit With
Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-01
•
Figure 7–6 shows LED Unit P/N 20179-0XX-00
•
Figure 7–7 shows an example 2 Aspect Type AT Signal Unit With LED Light Source,
Pole Mount, AT100-000-01
•
Figure 7–8 shows an example 7 Aspect Type AT Signal Unit With LED Light Source,
Pole Mount, AT100-000-02
•
Figure 7–9 shows an example 3 Aspect Type AT Signal Unit With Light Source,
Ceiling/Horizontal Mount
P2502, Rev. Apr/08
7–1
Alstom Signaling Inc.
Corrective Maintenance
Each replacement part is listed with the Alstom 10-digit drawing number that should be
used when ordering the replacement part.
Replacement parts are listed, described, and identified along with the quantity required
for each assembly in Tables accompanying the figures. Screw, nut, and bolt dimensions
are provided in diameter (inches) by threads per inch by length (inches). All other
dimensions are provided in inches, unless indicated otherwise.
P2502, Rev. Apr/08
7–2
Alstom Signaling Inc.
Corrective Maintenance
7.3.
LENSES
AT Housing
Bezel Gasket
Lens
Ring Bezel
(outer)
Lens Gasket
Table 7-1 is provided as a quick reference of part number for the glass lens, outer bezel
ring and the two associated gaskets only for the Colored Aspects. See the appropriate
assembly drawing and the appropriate parts list for a complete listing of parts.
Screw &
Lockwasher
Figure 7–1. Replacement Outer Lenses and Gaskets
Table 7–1. Replacement Outer Lenses
Description
Drawing Number
Red Lens
31624-006-00
Green Lens
31624-008-00
Yellow Lens
31624-007-00
Lunar White Lens
31624-015-00
Lens Gasket
13014-660-00
Bezel Gasket
13014-661-00
Bezel Ring
43983-055-00
P2502, Rev. Apr/08
7–3
Alstom Signaling Inc.
Corrective Maintenance
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–4
Alstom Signaling Inc.
Corrective Maintenance
7.4.
SINGLE ASPECT TYPE AT INCANDESCENT SIGNAL UNIT WITH TRANSFORMER
Figure 7-2. Example Single Aspect Type AT Incandescent Signal Unit With Transformer,
AT007-000-00
P2502, Rev. Apr/08
7–5 / 7–6 Blank
Alstom Signaling Inc.
Corrective Maintenance
Table 7–2. Example Single Aspect Type AT Incandescent Signal Unit With Transformer,
AT007-000-02 Part Numbers
Ref.
Description
QTY
Drawing No.
1
Case Comp
1
AT004-000-01
2
Lens (Yellow)
1
31624-007-00
3
Receptacle Comp
1
53058-046-01
4
Ring, Bezel
1
43983-055-00
5
Gasket, Bezel Ring
1
13014-661-00
6
Washer, .250 ID, .478 OD, .028 Thk Shk’prf
4
53029-075-00
7
Screw, .250-20 x 1.25 Lg Pan Hd
4
03615-040-ON
8
Gasket, Lens
1
13014-660-00
9
Screw, .190-32 x .500 Lg Pan Hd
2
03610-116-ON
10
Washer, .203 ID, .725 OD, .060 Thk Flat
2
05046-025-00
11
Washer, .190 ID, .381 OD, .025 Thk Shk’prf
2
53029-069-00
THE FOLLOWING PART MUST BE SPECIFIED ON ORDER AND SHIPPED
SEPARATELY
Lamp, 10V-5W
P2502, Rev. Apr/08
6
7–7
34866-038-00
Alstom Signaling Inc.
Corrective Maintenance
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–8
Alstom Signaling Inc.
Corrective Maintenance
7.5.
3 ASPECT TYPE AT INCANDESCENT SIGNAL, CEILING/HORIZONTAL MOUNT
Figure 7-3. Example 3 Aspect Type AT Incandescent Signal Unit
Without Transformers, With Illuminated LED Number Plate, Ceiling/Horizontal Mount,
AT000-108-00
P2502, Rev. Apr/08
7–9 / 7–10 Blank
Alstom Signaling Inc.
Corrective Maintenance
Table 7–3. Example 3 Aspect Type AT Incandescent Signal Unit Without Transformers,
With Illuminated LED Number Plate, Ceiling/Horizontal Mount, AT000-108-01
Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Unit Comp., 3 Indication
1
AT005-000-06
15
Plug, Pipe 1.50
1
36174-001-00
17
Bracket, With 1.50 N.P.T.
2
35656-005-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
6
01273-010-ON
21
Washer, .563 ID, 1.250 OD, .078 Thk Flat
12
01250-021-ON
22
Washer, .500 ID, 1.00 OD, .062 Thk Flat
4
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd
1
00520-005-ON
27
Nut, .500-13 x .594 Thk Elastic Stop
3
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
1
01048-005-00
40
Support Comp., No. Plate
1
39751-018-02
41
Screw, .190-32 x .63 Lg. Pan Hd.
4
03610-120-ON
42
Washer, .190 ID, .500 OD, .031 Thk. Flat (Nylon)
8
00493-354-00
43
Washer, .200 ID, .438 OD, .037 Thk. Flat
8
01250-009-ON
44
Nut, .190-32 x .24 Thk. Elastic Stop.
4
42333-047-00
52
Washer, .512 ID, .875 OD, .045 Thk. Shk’Prf.
2
53029-078-00
53
Gasket, .06 Thk., 70 Durometer, Neoprene (Case
Ends)
2
13014-680-00
56
Bolt, .500-13 x 2.75 Lg Sq. Hd W/Hex Nut
7
00525-002-ON
57
Bracket Comp.
1
55478-021-01
58
Bolt, .500-13 x 1.50 Lg Sq. Hd & Hex Nut
2
42187-000-00
59
Washer, .500 ID, .869 OD, .125 Thk Lock
2
01273-010-ON
THE FOLLOWING MATERIALS ARE ALSO REQUIRED FOR ASSEMBLY.
Terminal, .250 Ring (16-14)
6
59825-174-00
Wire, #14 Flex, 600V (Per 82E0005)
6
80551-051-01
Mineral Based Oil (Per 91A0007)
As Req’d
----
Tape, Vinyl (Per 99F0001)
As Req’d
----
Acrylic Paint, Black Fed. Color #37038 (Per
92A0029)
As Req’d
81361-151-01
1 Print
43989-619-00
As Req’d
81361-050-06
1 Print
54655-003-00
Wiring Diagram (Suffix No. As Spec)
Soft Mastic Sealing Compound (Per 90B0010)
Drilling Diagram, Bracket For Horiz. Mtg.
P2502, Rev. Apr/08
7–11
Alstom Signaling Inc.
Corrective Maintenance
Table 7–3. Example 3 Aspect Type AT Incandescent Signal Unit Without Transformers,
With Illuminated LED Number Plate, Ceiling/Horizontal Mount, AT000-108-01
Part Numbers (Cont.)
Ref.
Description
QTY
Drawing No.
THE FOLLOWING PART IS TO BE SPECIFIED ON S.O. AS REQUIRED.
32
Number Plate, Enamel, Brkt. Mtg. (Spec. on S.O.)
As Req’d
45924-028-00
39
Board Assembly, LED “5”
(White, Spec. on S.O.)
As Req’d
31166-288-03
39
Board Assembly, LED “10” (White, Spec. on S.O.)
As Req’d
31166-288-04
39
Board Assembly, LED “15” (White, Spec. on S.O.)
As Req’d
31166-288-02
39
Board Assembly, LED “20” (White, Spec. on S.O.)
As Req’d
31166-288-01
39
Board Assembly, LED “25” (White, Spec. on S.O.)
As Req’d
31166-288-05
39
Board Assembly, LED “30” (White, Spec. on S.O.)
As Req’d
31166-288-06
39
Board Assembly, LED “35” (White, Spec. on S.O.)
As Req’d
31166-288-07
THE FOLLOWING PART IS INCLUDED IN THE ASSEMBLY BUT MUST BE
SPECIFIED ON S.O. AND SHIPPED SEPARATELY
Lamp, 10V-5W
P2502, Rev. Apr/08
8
7–12
48088-031-00
Alstom Signaling Inc.
Corrective Maintenance
7.6.
3 ASPECT TYPE AT INCANDESCENT SIGNAL, WALL MOUNT
Figure 7-4. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-00
P2502, Rev. Apr/08
7–13 / 7–14 Blank
Alstom Signaling Inc.
Corrective Maintenance
Table 7–4. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-01 Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Unit Comp, 3 Indication
1
AT005-000-01
5
Washer, .250 ID, .487 OD, .062 Thk. Lock
2
01273-025-ON
6
Washer, .266 ID, .500 OD, .031 Thk. Flat
2
01250-011-ON
14
Washer, .200 ID, .438 OD, .032 Thk. Flat
4
01250-009-ON
15
Plug, Pipe 1.50
1
36174-001-00
16
Screw, .250-20 x .38 Lg. Pan Hd.
2
03615-012-ON
17
Bracket, With 1.50 N.P.T.
1
35656-005-00
18
Bracket
1
35656-006-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
8
01273-010-ON
21
Washer, .563ID, 1.250 OD, .078 Thk Flat
16
01250-021-ON
22
Washer, .500 ID, 1.00 OD, .062 Thk Flat
2
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd
1
00520-005-ON
27
Nut, .500-13 x .594 Thk Elastic Stop
1
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
1
01048-005-00
29
Gasket, .25 Thk. Square
1
13014-685-00
30
Washer, .190 ID, .500 OD, .032 Thk. Nylon
8
00493-354-00
36
Gasket
1
13014-201-00
41
Screw, .190-32 x 1.00 Lg Pan Hd
4
03610-132-ON
48
Spacer, .38 Lg. Tubular
4
49655-260-00
51
Nut, .190-32 x .187 Thk Elastic Stop
4
42333-056-00
52
Washer, .512 ID, .875 OD, .045 Thk. Shk’Prf.
2
53029-078-00
53
Gasket, .06 Thk., 70 Durometer, Neoprene (Case
Ends)
2
13014-680-00
54
Door Stop
1
38319-002-00
55
Screw, .250-20 x 1.00 Lg. Hex Hd.
3
54972-008-00
56
Bolt, .500-13 x 2.75 Lg Sq. Hd W/Hex Nut
7
00525-002-ON
57
Washer, .265 ID, .478 ID, .028 Thk. Shk’prf
6
53029-075-00
58
Gasket, (.019) .5mm Thk. Metric High Grade,
70 Durometer, 1500 psi Tensile Strength,
Neoprene, (For Door Stop)
1
13014-676-00
59
Nut, .250-20 x .31 Thk. Elastic Stop
3
42333-048-00
P2502, Rev. Apr/08
7–15
Alstom Signaling Inc.
Corrective Maintenance
Table 7–4. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Wall Mount,
AT000-001-01Part Numbers (Cont.)
Ref.
Description
QTY
Drawing No.
THE FOLLOWING MATERIALS ARE ALSO REQUIRED FOR ASSEMBLY.
Terminal, .250 Ring (16-14)
4
59825-174-00
7.0
80551-051-01
Mineral Based Oil (Per 91A0007)
As Req’d
----
Tape, Vinyl (Per 99F0001)
As Req’d
----
Acrylic Paint, Black Fed. Color #37038 (Per
92A0029)
As Req’d
81361-151-01
Wiring Diagram (Suffix No. As Spec)
1 Print
43989-481-00
Drilling Diagram, For Ref. 31, L Side
1 Print
54655-009-00
As Req’d
81361-050-06
1 Print
54655-002-00
Wire, #14 Flex, 600V (Per 82E0005)
Soft Mastic Sealing Compound (Per 90B0010)
Drilling Diagram, For Door Stop, Ref.54
THE FOLLOWING PARTS TO BE SPECIFIED ON S.O. AS REQUIRED.
31
Number plate, Lever
As Req’d
45924-018-00
32
Number Plate, Enamel
As Req’d
45924-016-00
THE FOLLOWING PART IS INCLUDED IN THE ASSEMBLY BUT MUST BE
SPECIFIED ON S.O. AND SHIPPED SEPARATELY
Lamp, 10V-5W
P2502, Rev. Apr/08
6
7–16
34866-038-00
Alstom Signaling Inc.
Corrective Maintenance
7.7.
3 ASPECT TYPE AT INCANDESCENT SIGNAL, POLE MOUNT
Figure 7-5. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-00
P2502, Rev. Apr/08
7–17 / 7–18 Blank
Alstom Signaling Inc.
Parts Catalog
Table 7–5. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-01 Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Unit Comp, 3 Indication
1
AT005-000-01
5
Washer, .250 ID, .487 OD, .062 Thk Lock
2
01273-025-ON
6
Washer, .266 ID, .500 OD, .031 Thk Flat
2
01250-011-ON
14
Washer, .200 ID, .438 OD, .032 Thk.
4
01250-009-ON
15
Plug, Pipe 1.50
1
36174-001-00
16
Screw, .250-20 x .38 Lg. Pan Hd.
2
03615-012-ON
17
Bracket, With 1.50 N.P.T.
1
35656-005-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
4
01273-010-ON
21
Washer, .563ID, 1.250 OD, .078 Thk Flat
8
01250-021-ON
22
Washer, .500 ID, 1.00 OD, .062 Thk Flat
6
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd
1
00520-005-ON
27
Nut, .500-13 x .594 Thk Elastic Stop
5
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
1
01048-005-00
29
Gasket, Square, .250 Thk. Neoprene
1
13014-685-00
30
Washer, .190 ID, .500 OD, .032 Thk. Nylon
8
00493-354-00
33
Socket, Pole
1
28447-011-00
34
Screw, .500-13 x 1.25 Lg Cap Hd
3
03343-035-00
35
Nut, .500-13 x .31 Thk Hex
3
41895-001-00
36
Gasket
1
13014-201-00
41
Screw, .190-32 x 1.00 Lg Pan Hd
4
03610-132-ON
48
Spacer, .38 Lg. Tubular
4
49655-260-00
51
Nut, .190-32 x .187 Thk Elastic Stop
4
42333-056-00
52
Washer, .512 ID, .875 OD, .045 Thk. Shk’prf.
3
53029-078-00
53
Gasket, .06 Thk., 70 Durometer, Neoprene (Case
Ends)
2
13014-680-00
54
Door Stop
1
38319-002-00
55
Screw, .250-20 X 1.00 Lg. Hex Hd.
3
54972-008-00
56
Bolt, .500-13 x 2.75 Lg Sq Hd W/Hex Nut
1
00525-002-ON
57
Washer, .265 ID, .478 OD, .028 Thk. Shk’prf.
6
53029-075-00
58
Gasket, (.019) .5mm Thk. Metric High Grade,
70Durometer, 1500 psi Tensile Strength,
Neoprene, (Door Stop)
1
13014-676-00
P2502, Rev. Apr/08
7–19
Alstom Signaling Inc.
Parts Catalog
Table 7–5. Example 3 Aspect Type AT Incandescent Signal Unit
With Transformers, Enameled Number Plate, Door Stop and Side Plate, Pole Mount,
AT000-024-01Part Numbers (Cont.)
Ref.
59
Description
Nut, .250-20 X .31 Thk, Elastic Stop
QTY
Drawing No.
3
42333-048-00
THE FOLLOWING MATERIALS ARE ALSO REQUIRED FOR ASSEMBLY.
Terminal, .250 Ring (16-14)
4
59825-174-00
7.0
80551-051-01
Mineral Based Oil (Per 91A0007)
As Req’d
----
Tape, Vinyl (Per 99F0001)
As Req’d
----
Acrylic Paint, Black Fed. Color #37038 (Per
92A0029)
As Req’d
81361-151-01
Wiring Diagram (Suffix No. As Spec)
1 Print
43989-481-00
Drilling Diagram, For Ref. 31, L Side
1 Print
54655-009-00
Drilling Diagram, For Door Stop, Ref.54
1 Print
54655-002-00
Wire, #14 Flex, 600V (Per 82E0005)
THE FOLLOWING PARTS TO BE SPECIFIED ON S.O. AS REQUIRED.
31
Number plate, Lever
As Req’d
45924-018-00
32
Number Plate, Enamel
As Req’d
45924-016-00
THE FOLLOWING PARTS TO BE SPECIFIED ON S.O. AS REQUIRED.
31
Plate, Number, Enamel Side Mtg. (Spec No. On
S.O.)
As Req’d
45924-018-00
32
Plate, Number, Enamel Front Mtg. (Spec No. On
S.O.)
As Req’d
45924-016-00
THE FOLLOWING PART IS INCLUDED IN THE ASSEMBLY BUT MUST BE
SPECIFIED ON S.O. AND SHIPPED SEPARATELY
Lamp, 10V-5W
6
34866-038-00
60
Base Comp, Split (Cast Iron)
1
43951-003-06
61
Pole, 3.00 Std Commercial Steel
As Req’d
----
P2502, Rev. Apr/08
7–20
Alstom Signaling Inc.
Parts Catalog
7.8.
LED UNITS
Figure 7-6. LED Unit P/N 20179-0XX-00
Table 7-6. LED Unit Part Numbers
LED Color
Alstom Part Number
Red
20179-009-00
Green
20179-008-00
Yellow
20179-010-00
Lunar White
20179-011-00
P2502, Rev. Apr/08
7–21
Alstom Signaling Inc.
Parts Catalog
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–22
Alstom Signaling Inc.
Parts Catalog
7.9.
2 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE, POLE MOUNT
Figure 7-7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-001-00 Sheet 1
P2502, Rev. Apr/08
7–23 / 7–24 Blank
Alstom Signaling Inc.
Parts Catalog
Figure 7-7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-001-00 Sheet 2
P2502, Rev. Apr/08
7–25 / 7–26 Blank
Alstom Signaling Inc.
Parts Catalog
Table 7-7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-001-01 Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Complete, “AT” (Red LED) Cast Alum.
2
AT200-001-01
5
Gasket, .06 Thk. 70 Durometer Neoprene
(Case Ends)
3
13014-680-00
MOUNTING HARDWARE
17
Bracket, Top (Blank)
1
35656-006-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
8
01273-010-ON
21
Washer, .563 ID, 1.250 OD, .078 Thk Flat
10
01250-021-ON
22
Washer, .500 ID, 1.000 OD, .063 Thk Flat
8
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd Tap (Gnd
Stud)
2
00520-005-ON
27
Nut, .500-13 x .594 Thk. Elastic Stop
6
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
5
01048-005-00
33
Socket, Pole
1
28447-011-00
34
Screw, .500-13 x 1.25 Lg Cap Hd
3
03343-035-00
35
Nut, .500-13 x .31 Thk Hex
3
41895-001-00
52
Washer, .512 ID, .875 OD, .045 Thk Shk’prf
5
53029-078-00
56
Bolt, .500-13 x 2.75 Lg W/Hex Nut
7
00525-002-ON
70
Screw,.500-13x2.75 lg Hex Hd Cap
3
03343-027-00
FRONT NO. PLATE
25
Screw, .190-32 x .63 Lg. Tamper Resistant.
4
01241-065-ON
29
Washer, .200 ID, .438 OD, .037 Thk. Flat
12
01250-009-ON
30
Washer, .190 ID, .500 OD, .031 Thk. Flat
Nylon
16
00493-354-00
32
Nut, .190-32 x .24 Thk. Elastic Stop
4
42333-047-00
35
Support Comp. (Front No. Plate)
1
39751-018-02
SIDE NO. PLATE
41
Screw, .190-32 x 1.00 Lg. Tamper Resistant.
4
01241-059-ON
42
Spacer, .38 Lg. Tubular
4
49655-260-00
43
Nut, .190-32 x .187 Thk. Elastic Stop
4
42333-056-00
P2502, Rev. Apr/08
7–27
Alstom Signaling Inc.
Parts Catalog
Table 7–7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-001-01 Part Numbers (Cont.)
Ref.
Description
QTY
Drawing No.
DOOR STOP
54
Door Stop
2
38319-002-00
55
Screw, .250-20 X 1.00 Lg. Hex Hd.
6
54972-008-00
57
Washer, .265 ID, .478 OD, .028 Thk. Lock
6
01273-025-ON
58
Gasket, (.019) .5mm Thk. Metric High Grade,
70 Durometer, 1500 psi Tensile Strength,
Neoprene, (Door Stop)
2
13014-676-00
59
Nut, .250-20 X .31 Thk, Elastic Stop
6
42333-048-00
62
Washer, .266 ID, .500 OD, .031 Thk. Flat
6
01250-011-ON
63
Nut, .242-24 x .188 Thk. Hex
4
42839-005-00
64
Washer, .266 ID, .563 OD, .040 Thk. Flat
6
01225-002-00
THE FOLLOWING MATERIALS ARE ALSO REQUIRED FOR ASSEMBLY:
Terminal, .250 Ring (16-14)
4
59825-174-00
Wire, #14 Flex, 600V (Per 82E0005)
2
80551-051-01
Mineral Base Oil (Per 91A0007)
As Req'd
Soft Mastic Sealing Compound (Per
90B0010)
As Req'd
81361-050-06
Acrylic Paint, Black Fed. Color #37038 (Per
92A0029)
As Req'd
81361-151-01
Tape, Vinyl (Per 99F0001)
As Req'd
Tubing, Spiral Wrap (Per 82P0001)
As Req'd
Drilling Diagram, For Door Stop (Ref.54)
1 Print
54655-002-00
Wiring Diagram
1 Print
43989-799-00
Wire, #6 Copper
1
80613-000-01
Terminal, Solder .500 Ring
2
59825-089-00
Tag, Wire Marker, DL (ARG1)
1
34558-783-00
Tag, Wire Marker, DL (ARG2)
1
34558-784-00
Tag, Wire Marker, DL (BRG1)
1
34558-785-00
Tag, Wire Marker, DL (BRG2)
1
34558-786-00
Tag, Wire Marker,#6 AWG (GND)
2
48932-016-00
Tie, Cable (For GND Tags)
2
01232-013-ON
THE FOLLOWING PARTS TO BE SPECIFIED ON S.O. AS REQUIRED.
31
Plate, Number, Enamel Side Mtg. (Spec No
On S.O.)
P2502, Rev. Apr/08
7–28
1
45924-018-00
Alstom Signaling Inc.
Parts Catalog
Table 7–7. Example 2 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-001-01 Part Numbers (Cont.)
Ref.
32
Description
Plate, Number, Enamel Front Mtg. (Spec No
On S.O.)
QTY
Drawing No.
1
45924-028-00
THE FOLLOWING PARTS ARE INCLUDED IN THE ASSEMBLY, BUT MUST BE
SPECIFIED ON S.O AND SHIPPED SEPARATELY
60
Base Complete, Split (Cast Iron)
1
43951-003-06
61
Pole, 3.00 Std. Commercial Steel
1
11560-163-00
65
Hood 4”
2
49127-108-00
P2502, Rev. Apr/08
7–29
Alstom Signaling Inc.
Parts Catalog
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–30
Alstom Signaling Inc.
Parts Catalog
7.10. 7 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE, POLE MOUNT
Figure 7-8. Example 7 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-002-00 Sheet 1
P2502, Rev. Apr/08
7–31 / 7–32 Blank
Alstom Signaling Inc.
Parts Catalog
Figure 7-8. Example 7 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-002-00 Sheet 2
P2502, Rev. Apr/08
7–33 / 7–34 Blank
Alstom Signaling Inc.
Parts Catalog
Table 7-8. Example 7 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-002-01 Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Unit Comp, 3 Indication
2
AT200-002-06
3
Signal Unit Comp, 1 Indication
1
AT200-001-02
5
Washer, .250 ID, .487 OD, .062 Thk Lock
4
01273-025-ON
6
Washer, .266 ID, .500 OD, .031 Thk Flat
4
01250-011-ON
16
Screw, .250-20 x .38 Lg. Pan Hd.
4
03615-012-ON
17
Bracket
1
35656-006-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
15
01273-010-ON
21
Washer, .563 ID, 1.250 OD, .078 Thk Flat
11
01250-021-ON
22
Washer, .500 ID, 1.00 OD, .062 Thk Flat
10
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd
2
00520-005-ON
27
Nut, .500-13 x .594 Thk Elastic Stop
7
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
6
01048-005-00
29
Gasket, Square, Neoprene, .250 Thk.
2
13014-685-00
33
Socket, Pole
1
28447-011-00
34
Screw, .500-13 x 1.25 Lg Cap Hd
3
03343-035-00
35
Nut, .500-13 x .31 Thk Hex
3
41895-001-00
36
Gasket
2
13014-201-00
52
Washer, .512 ID, .875 OD, .045 Thk. Shk’prf.
7
53029-078-00
53
Gasket, .06 Thk., 70 Durometer, Neoprene
(Case Ends)
5
13014-680-00
54
Door Stop
3
38319-002-00
55
Screw, .250-20 X 1.00 Lg. Hex Hd.
9
54972-008-00
56
Bolt, .500-13 x 2.75 Lg Sq Hd W/Hex Nut
7
00525-002-ON
57
Washer, .265 ID, .478 OD, .028 Thk. Lock.
9
01273-025-ON
58
Gasket, (.019) .5mm Thk. Metric High Grade,
70Durometer, 1500 psi Tensile Strength,
Neoprene, (Door Stop)
3
13014-676-00
59
Nut, .250-20 X .31 Thk, Elastic Stop
9
42333-048-00
60
Washer, .266 ID, .500 OD, Flat
9
01250-011-ON
61
Plate
1
54106-462-00
62
Bolt, .500-13 x 5.00 Lg Hex Hd
1
00733-001-ON
67
Hood, 9”
6
49127-107-00
68
Hood, 4”
1
49127-108-00
P2502, Rev. Apr/08
7–35
Alstom Signaling Inc.
Parts Catalog
Table 7–8. Example7 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-002-01 Part Numbers (Cont.)
Ref.
Description
QTY
Drawing No.
69
Bolt, .500-13 x 4.5 Lg Sq Hd W/Hex Nut
3
49527-034-00
70
Screw, .500-13 x 2 3/4 Lg Hex Hd Cap
3
03343-027-00
THE FOLLOWING MATERIALS ARE ALSO REQUIRED FOR THE ASSEMBLY
Mineral Based Oil
As Req’d
Tape, Vinyl
As Req’d
Acrylic Paint, Black Fed. Color #37038
As Req’d
81361-151-01
Soft Mastic Sealing Compound
As Req’d
81361-050-06
1 Print
54655-002-00
Terminal, .250 Ring (16-14)
14
59825-174-00
Terminal, Solder .500 Ring
4
59825-089-00
Wire, #14 Flex, 600V (Per 82E0005)
14
80551-051-01
Wire, #6 Copper
6
80613-000-01
Wiring Diagram
1 Print
43989-800-00
Tag, Wire Marker, DL (ARG1)
1
34558-783-00
Tag, Wire Marker, DL (ARG2)
1
34558-784-00
Tag, Wire Marker, DL (BRG1)
1
34558-785-00
Tag, Wire Marker, DL (BRG2)
1
34558-786-00
Tag, Wire Marker, DL (AHG1)
1
34558-793-00
Tag, Wire Marker, DL (AHG2)
1
34558-794-00
Tag, Wire Marker, DL (BHG1)
1
34558-795-00
Tag, Wire Marker, DL (BHG2)
1
34558-796-00
Tag, Wire Marker, DL (CHG1)
1
34558-797-00
Tag, Wire Marker, DL (CHG2)
1
34558-798-00
Tag, Wire Marker, DL (ADG1)
1
34558-799-00
Tag, Wire Marker, DL (ADG2)
1
34558-800-00
Tag, Wire Marker, DL (BDG1)
1
34558-801-00
Tag, Wire Marker, DL (BDG2)
1
34558-802-00
Tag, Wire Marker,#6 AWG (GND)
4
48932-016-00
Tie, Cable (For GND Tags)
4
01232-013-ON
Drilling Diagram, For Door Stop Ref. 54
--
THE FOLLOWING PARTS TO BE SPECIFIED ON S.O. AS REQUIRED
32
Plate, Number, Enamel, Front Mtg. (Spec.
No. On S.O.)
P2502, Rev. Apr/08
7–36
As Req’d
45924-016-00
Alstom Signaling Inc.
Parts Catalog
Table 7–8. Example7 Aspect Type AT Signal Unit With LED Light Source, Pole Mount,
AT100-002-01 Part Numbers (Cont.)
Ref.
Description
QTY
Drawing No.
THE FOLLOWING PARTS ARE INCLUDED IN THE ASSEMBLY, BUT MUST BE
SPECIFIED ON S.O. AND SHIPPED SEPARATELY
63
Base Comp, Split (Cast Iron)
1
43951-003-06
71
Pole, 3.00 Std Commercial Steel
1
11560-166-00
P2502, Rev. Apr/08
7–37
Alstom Signaling Inc.
Parts Catalog
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–38
Alstom Signaling Inc.
Parts Catalog
7.11. 3 ASPECT TYPE AT SIGNAL UNIT WITH LED LIGHT SOURCE, CEILING/HORIZONTAL MOUNT
30
32
29
53
14
22
27
38
60
(NOTE 10)
25
DETAIL "K"
METHOD OF INSTALLING BRACKET (REF.29)
AND FRONT NO. PLATE (REF.38)
AT BOTTOM OF SIGNAL CASE
53
20
56
(2.50)
21
53
NOTE 12
53
(Ø.875)
21
20
DETAIL
53
SEE
DETAIL
"A"
SEE
DETAIL
"A"
1
56
VIEW SHOWING METHOD OF
ASSEMBLING NUTS, WASHERS,
ETC., AT TOP OF SIGNAL CASE
38
DETAIL "K"
17
"A"
DETAIL
"D"
VIEW SHOWING METHOD OF
ASSEMBLING NUTS, WASHERS,
ETC., AT BOTTOM OF SIGNAL CASE
39
"E"
SEE
DETAIL
"K"
SEE
DETAIL
"K"
SEE DETAIL "D"
EXCEPT ADD WASHER
REF.52 UNDER HEAD
OF BOLT
20
28
27
22
21
17
NOTE 11
SEE
DETAIL
"D"
SEE
DETAIL
"A"
15
VIEW "E-E"
SEE
DETAIL
"C"
53
NOTE 12
VIEW SHOWING BRACKET REF.17
AT BOTTOM OF SIGNAL
"E"
52
26
( 28.75 )
( 33.93 )
DETAIL
"C"
VIEW SHOWING METHOD OF
ASSEMBLING GROUND POST
Figure 7-9. Example 3 Aspect Type AT Signal Unit With LED Light Source,
Ceiling/Horizontal Mount
P2502, Rev. Apr/08
7–39 / 7–40 Blank
Alstom Signaling Inc.
Parts Catalog
Table 7-9. Example 3 Aspect Type AT Signal Unit With LED Light Source,
Ceiling/Horizontal Mount Part Numbers
Ref.
Description
QTY
Drawing No.
1
Signal Unit Comp., 3 Indication
1
70408-002-02
2
Signal Unit Comp., (Red)
1
70408-003-01
5
Washer, .250 ID, .487 OD, .062 Thk Lock
2
01273-025-ON
6
Washer, .266 ID, .500 OD, .031 Thk Flat
2
01250-011-ON
15
Plug, Pipe 1.50
1
36174-001-00
16
Screw, .250-20 x .38 Lg. Pan Hd.
2
03615-012-ON
17
Bracket
1
35656-006-00
18
Bracket, With 1.50 N.P.T.
1
35656-005-00
20
Washer, .500 ID, .869 OD, .125 Thk Lock
11
01273-010-ON
21
Washer, .563 ID, 1.250 OD, .078 Thk Flat
16
01250-021-ON
22
Washer, .500 ID, 1.00 OD, .062 Thk Flat
3
01250-020-ON
26
Bolt, .500-13 x 3.50 Lg Hex Hd
1
00520-005-ON
27
Nut, .500-13 x .594 Thk Elastic Stop
2
42333-050-00
28
Nut, .500-13 x .438 Thk Hex
1
01048-005-00
29
Gasket, .25 Thk. Square
1
13014-685-00
36
Gasket
1
13014-201-00
52
Washer, .512 ID, .875 OD, .045 Thk. Shk’Prf.
4
53029-078-00
53
Gasket, .06 Thk., 70 Durometer, Neoprene
(Case Ends)
3
13014-680-00
54
Door Stop
2
38319-002-00
55
Screw, .250-20 x 1.00 Lg. Hex Hd.
6
54972-008-00
56
Bolt, .500-13 x 2.75 Lg Sq. Hd W/Hex Nut
7
00525-002-ON
57
Washer, .265 ID, .478 ID, .028 Thk. Shk’prf
12
53029-075-00
P2502, Rev. Apr/08
7–41
Alstom Signaling Inc.
Parts Catalog
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
7–42
Alstom Signaling Inc.
Drawings
A. APPENDIX A – DRAWINGS
A.1. GENERAL
The following are sample wiring diagrams for basic AT LED (no LED number plate).
Dashed lines indicate field installed wiring.
A.2. TYPE AT INCANDESCENT SIGNAL WIRING DIAGRAMS
ACX
R
Figure A–1. Typical Single Aspect Type AT Incandescent Signal Wiring Diagram
P2502, Rev. Apr/08
A–1
Alstom Signaling Inc.
TERMINAL
BLOCK
TRANSFORMERS
LAMPS
Drawings
Y
110 VAC
R
COMMON (BCX OR ACX)
G
ILLUMINATED
NO. PLATE
BLACK
BCX
ILLUM
R
NO. PLATE
Y
ACX
G
RED
TYPICAL WIRING OF A
LAMP AND TRANSFORMER
Figure A–2. Typical 3 Aspect Type AT Incandescent Signal Unit With Illuminated
Number plate and Transformers Wiring Diagram
P2502, Rev. Apr/08
A–2
Alstom Signaling Inc.
Drawings
Figure A–3. Typical 4 Aspect Type AT Incandescent Signal Unit
With Enameled Number Plate and Transformers Wiring Diagram
(Single Aspect Plus 3 Aspect)
P2502, Rev. Apr/08
A–3
Alstom Signaling Inc.
Drawings
A.3. TYPE AT SIGNAL UNIT WITH LED P/N 20179-0XX-00 WIRING DIAGRAMS
1
L
2
CX
L
Figure A–4. Typical Single Aspect Type AT Signal With LED Unit P/N 20179-0XX-00
Wiring Diagram
P2502, Rev. Apr/08
A–4
Alstom Signaling Inc.
Drawings
1
G
2
1
Y
2
1
R
2
xxxRG
xxxHG ACX
xxxDG
Figure A–5. Typical 3 Aspect Type AT Signal With LED Unit P/N 20179-0XX-00 Wiring
Diagram
P2502, Rev. Apr/08
A–5
Alstom Signaling Inc.
Drawings
1
G
2
1
Y
2
1
R
2
1
20
2
xxxSTG
xxxRG
xxxHG ACX xxxDG
Figure A–6. Typical 3 Aspect Type AT Signal With LED Unit P/N 20179-0XX-00 and
Illuminated Number Wiring Diagram
P2502, Rev. Apr/08
A–6
Alstom Signaling Inc.
Drawings
1
2
1
2
1
2
1
2
BXAR
AR
BXBY
AY
BXAY
BY
BXBR
BR
Figure A–7. Typical Four Aspect Type AT Signal With LED Unit P/N 20179-0XX-00
Wiring Diagram (Single Aspect Plus and 3 Aspect)
P2502, Rev. Apr/08
A–7
Alstom Signaling Inc.
Drawings
THIS PAGE INTENTIONALLY LEFT BLANK.
P2502, Rev. Apr/08
A–8
Alstom Signaling Inc.
FOR QUESTIONS AND INQUIRIES, CONTACT CUSTOMER SERVICE AT
1-800-717-4477
OR
WWW.ALSTOMSIGNALINGSOLUTIONS.COM
ALSTOM SIGNALING INC.
1025 JOHN STREET
WEST HENRIETTA, NY 14586