Siemens L-852A-D Dualite Manual
Siemens L-852A-D Dualite Manual

Siemens L-852A-D Dualite Manual

Bidirectional taxiway light fixtures
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Type L-852A-D Dualite
Bidirectional Taxiway Light Fixtures
Document No. 96A0149
Issued: January 29, 1993
Rev. E: May 16, 2001
Manufactured to FAA Specification
AC 150/5345-46B
Copyright © 2001 by Siemens Airfield Solutions, Incorporated. All rights reserved.

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Summary of Contents for Siemens L-852A-D Dualite

  • Page 1 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Document No. 96A0149 Issued: January 29, 1993 Rev. E: May 16, 2001 Manufactured to FAA Specification AC 150/5345-46B Copyright © 2001 by Siemens Airfield Solutions, Incorporated. All rights reserved.
  • Page 2: Record Of Changes

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Record of Changes Record of Changes Page Description EC No. Checke Approved Date Added metric units. Added shallow base information. Added 30 W L-852A, B, C. Reformatted manual. 3355 3/26/98 Changed to new title page. Changed ADB to...
  • Page 3: Table Of Contents

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Table of Contents Table of Contents Record of Changes..................ii Table of Contents..................iii Warranties....................v 1. Safety ....................1 Safety Symbols................. 1 Qualified Personnel................2 Intended Use ..................2 Installation ..................3 Operation ..................
  • Page 4 L-852A-D Light Fixture Parts List ..........29 Recommended Spare Parts List ............32 List of Figures Figure 1. L-852A-D Dualite Light Fixture ..........6 Figure 2. Optical Assembly..............7 Figure 3. Preparing Pavement Recess and Wireways......12 Figure 4. Alignment Jig................. 15 Figure 5.
  • Page 5: Warranties

    This manual could contain technical inaccuracies or typographical errors. Siemens Airfield Solutions reserves the right to revise this manual from time to time in the contents thereof without obligation of Siemens Airfield Solutions to notify any person of such revision or change.
  • Page 6 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Warranties © 2001 Siemens Airfield Solutions, Incorporated Page v 96A0149E Issued 5/01 All rights reserved...
  • Page 7: Safety

    Safety Type L-850A Dualite Bidirectional Runway Light Fixture This section contains general safety instructions for using your Siemens 1. Safety Airfield Solutions equipment. Some safety instructions may not apply to the equipment in this manual. Task- and equipment-specific warnings are included in other sections of this manual where appropriate.
  • Page 8 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Safety © 2001 Siemens Airfield Solutions, Incorporated Page 2 96A0149E Issued 5/01 All rights reserved...
  • Page 9: Qualified Personnel

    Unintended uses may result from taking the following actions: • making changes to equipment that have not been recommended or described in this manual or using parts that are not genuine Siemens Airfield Solutions replacement parts • failing to make sure that auxiliary equipment complies with approval agency requirements, local codes, and all applicable safety standards •...
  • Page 10: Installation

    WARNING: Failure to follow these safety procedures can result in personal injury or death. • Allow only qualified personnel to install Siemens Airfield Solutions and auxiliary equipment. Use only approved equipment. Using unapproved equipment in an approved system may void agency approvals.
  • Page 11: Action In The Event Of A System Or Component Malfunction

    Allow only qualified personnel to perform maintenance, troubleshooting, Maintenance and Repair and repair tasks. Only persons who are properly trained and familiar with Siemens Airfield Solutions equipment are permitted to service this equipment. • Always use safety devices when working on this equipment.
  • Page 12: Description

    • Use tools with insulated handles when working with electrical equipment. This section describes the Siemens Airfield Solutions L-852 series dualite 2. Description taxiway inset light fixtures referred to in Table 1. Table 1. L-852 Series Light Fixtures...
  • Page 13: Optical Assembly

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Description See Figure 1. The L-852A-D light fixtures are switchable lights designed 2. Description (contd.) to provide visual guidance along the taxiway centerline and is manufactured in accordance with FAA specification AC 150/5345-46A.
  • Page 14: Figure 2. Optical Assembly

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Description Figure 2. Optical Assembly © 2001 Siemens Airfield Solutions, Incorporated Page 8 96A0149E Issued 5/01 All rights reserved...
  • Page 15: Optional Film Disc Cutout

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Description In case of lamp failure, an optional film disc cutout is available as an Optional Film Disc Cutout electrical bypass device. The film disc cutout closes an auxiliary circuit around the lamp within 15 seconds after lamp failure. This prevents all lights from going out when several lights are run from a single transformer.
  • Page 16: Specifications

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Description This subsection provides specifications for the L-852A-D light fixtures. Specifications Lamps Refer to the table below for lamps. Number of Lamps Lamp Wattage (W) Lamp Current Unit Supplied with Fixture 6.6 A Unidirectional 6.6 A...
  • Page 17: Mounting

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Description Mounting The L-852A-D light fixtures mount on an optional Siemens Airfield Solutions shallow base or on a 12-inch- (304.8-mm-) diameter deep L- 868B light base. Refer to Table 5 for connectors supplied.
  • Page 18: Installation

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation WARNING: Allow only qualified personnel to perform the 3. Installation following tasks. Observe and follow the safety instructions in this document and all other related documentation. Introduction This section provides instructions for installing the L-852A-D runway inset lights.
  • Page 19: Figure 3. Preparing Pavement Recess And Wireways

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation Pavement Recess and Wireways Preparation (contd.) 12 in. (304.8 mm) 1.5 in. 13-in.-Diameter (38.1 mm) Recess Hole 24 in. (609.6 mm) 3 in. (76.2 mm) 6 in. (152.4 mm) 0.5 in. (12.7 mm) Figure 3.
  • Page 20: Installation On L-868B Base

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation Pavement Recess and Wireways Preparation (contd.) • Make sure the recess size and depth are maintained within specified limits. • The recess side walls must be perpendicular to the pavement surface. •...
  • Page 21 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation connection is solid and secure. Refer to Table 4 in Specifications in the Description section for required isolation transformers. © 2001 Siemens Airfield Solutions, Incorporated Page 15 96A0149E Issued 5/01 All rights reserved...
  • Page 22: Installation On Siemens Airfield Solutions Shallow Base

    185 ±5 inch-pounds (20.902 ±0.565 Nt-M). Torque across the corners. Refer to Retorquing Mounting Bolts in the Maintenance section. To install the L-852A-D dualite light fixture on a Siemens Airfield Installation on Siemens Solutions shallow base, perform the following procedure:...
  • Page 23: Figure 4. Alignment Jig

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation 5. See Figure 4. Use an alignment jig to align the light assembly. The Installation on Siemens jig has three positioning screws that fit into the tapped holes holding Airfield Solutions Shallow the light fixture to the shallow base.
  • Page 24 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Installation 6. To attach the alignment jig, remove bolts #1, 2, and 3 from the light Installation on Siemens fixture. Airfield Solutions Shallow Base (contd.) 7. Secure the jig with the three screws provided with the fixture. Contact the Siemens Airfield Solutions Sales Department if further information is required concerning the jig.
  • Page 25: Maintenance

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Maintenance This section provides maintenance information and procedures for the 4. Maintenance L-852A-D light fixture. Service life depends upon the entire assembly being waterproof. All Maintenance Schedule surfaces must be clean, dry and free of all foreign matter and all bolts must be properly tightened if the light fixture is to operate for extended periods without requiring maintenance.
  • Page 26 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Maintenance Replacing Lamp WARNING: Turn off the circuit before replacing lamp(s). Failure to observe this warning may result in personal injury, death, or equipment damage. WARNING: Allow time for the unit to cool. High interior temperatures may cause severe burns to personnel.
  • Page 27: Figure 5. Cutaway View Of Optical Assembly

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Maintenance Bolt #1 Bolt #6 Bolt #2 Bolt #3 Bolt #5 Bolt #4 Figure 5. Cutaway View of Optical Assembly 1. Cutout Clip 5. Prism 9. Pan Head Screws 2. Disc Cutouts 6. Prism Outer Surface 10.
  • Page 28 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Maintenance Cleaning Light Channel and Prism (contd.) 2. Clean the outer surface of the prism (6) using liquid glass cleaner. If the prism is coated with a substance impervious to the cleaner, apply a suitable solvent sparingly with a wad of cotton or a patch of cloth.
  • Page 29: Troubleshooting

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Troubleshooting WARNING: Allow only qualified personnel to perform the 5. Troubleshooting following tasks. Observe and follow the safety instructions in this document and all other related documentation. WARNING: De-energize the circuit and lock out the circuit or regulator so that the circuit cannot be energized by remote means before attempting to service the fixture.
  • Page 30 Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Troubleshooting 5. Troubleshooting (contd.) Problem Possible Cause Corrective Action Current too high Check constant current regulator and 5. Short lamp life isolation transformer. Water in assembly Inspect prism. Open light assembly. Clean, dry and inspect light assembly. Replace O-ring.
  • Page 31: Repair

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Repair This section describes procedures for repairing and replacing parts. 6. Repair It includes replacing the film disc cutout assembly, the lamp, and prism. To replace the film disc cutout assembly, perform the following procedure:...
  • Page 32: Figure 6. Replacing Film Disc Cutout Assembly

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Repair Figure 6. Replacing Film Disc Cutout Assembly 4. Install new or existing o-ring from Step 4. Coat o-ring with silicone grease before installing. 5. Place bottom cover assembly in place and pull out majority of cordset slack.
  • Page 33: Replacing Lamp

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Repair Replacing Lamp WARNING: Turn off the circuit before replacing lamp(s). Failure to observe this warning may result in personal injury, death, or equipment damage. WARNING: Allow time for the unit to cool. High interior temperatures may cause severe burns to personnel.
  • Page 34: Replacing Prism

    Replace the prism if it is broken or its surface is badly pitted or scarred. If you replace the prism, return the unit to Siemens Airfield Solutions for repair. Any attempt to replace the prism in the field prior to warranty expiration will terminate the warranty on the unit.
  • Page 35: Parts

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Parts To order parts, call Siemens Airfield Solutions Customer Service or your 7. Parts local representative. Use this four-column parts list, and the accompanying illustration, to describe and locate parts correctly. The Item column numbers correspond to the numbers that identify parts in Using the Illustrated Parts illustrations following each parts list.
  • Page 36: Figure 7. L-852A-D Light Fixture Part Numbers

    L-852D (Cat. III) Wide Beam 7 = L-852A (Cat I & II) or L-852C (Cat. III) Narrow Beam * For a configuration not shown, contact the Siemens Airfield Solutions Sales Department. Figure 7. L-852A-D Light Fixture Part Numbers © 2001 Siemens Airfield Solutions, Incorporated...
  • Page 37: L-852A-D Light Fixture Parts List

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Parts L-852A-D Light Fixture Parts See Figure 8. List Item Description Part Number Note Lamp assembly Lamp assembly, 45 W, 6.6 A (L-852C, L-852D) 44B1605 Lamp assembly, 30 W, 6.6 A (L-852A, L-852B, L-852C)
  • Page 38: Figure 8. L-852A-D Light Fixture With Shallow Base (Part 1 Of 2)

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Parts L-852A-D Light Fixture Parts List (contd.) Figure 8. L-852A-D Light Fixture with Shallow Base (Part 1 of 2) © 2001 Siemens Airfield Solutions, Incorporated Page 32 96A0149E Issued 5/01 All rights reserved...
  • Page 39: Figure 8. L-852A-D Light Fixture With Shallow Base (Part 2 Of 2)

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Parts 4.5 in. (104.3 mm) (Minimum) Figure 8. L-852A-D Light Fixture with Shallow Base (Part 2 of 2) © 2001 Siemens Airfield Solutions, Incorporated Page 33 96A0149E Issued 5/01 All rights reserved...
  • Page 40: Recommended Spare Parts List

    Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Parts See Figure 8. Recommended Spare Parts List Item Description Part Number Note Lamp assembly Lamp assembly, 45 W, 6.6 A (L-852C, L-852D) 44B1605 Lamp assembly, 30 W, 6.6 A (L-852A, L-852B, L-852C)

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