List of Figures

List of Tables

Warranties

Disclaimers

Products of Siemens Airfield Solutions manufacture are guaranteed against mechanical, electrical, and physical defects (excluding lamps) for a period of one year from the date of installation or a maximum of two years from the date of shipment and are guaranteed to be merchantable and fit for the ordinary purposes for which such products are made.

Siemens Airfield Solutions will correct by repair or replacement, at its option, equipment or parts which fail because of mechanical, electrical or physical defects, provided that the goods have been properly handled and stored prior to installation, properly installed and properly operated after installation, and provided further that Buyer gives Siemens Airfield Solutions written notice of such defects after delivery of the goods to Buyer.

Siemens Airfield Solutions reserves the right to examine goods upon which a claim is made. Said goods must be presented in the same condition as when the defect therein was discovered. Siemens Airfield Solutions furthers reserves the right to require the return of such goods to establish any claim.

Siemens Airfield Solutions???s obligation under this guarantee is limited to making repair or replacement within a reasonable time after receipt of such written notice and does not include any other costs such as the cost of removal of defective part, installation of repaired product, labor or consequential damages of any kind, the exclusive remedy being to require such new parts to be furnished.

Siemens Airfield Solutions???s liability under no circumstances will exceed the contract price of goods claimed to be defective. Any returns under this guarantee are to be on a transportation charges prepaid basis. For products not manufactured by, but sold by Siemens Airfield Solutions, warranty is limited to that extended by the original manufacturer.

This is Siemens Airfield Solutions???s sole guarantee and warranty with respect to the goods; there are no express warranties or warranties of fitness for any particular purpose or any implied warranties of fitness for any particular purpose or any implied warranties other than those made expressly herein. All such warranties being expressly disclaimed.

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.

Details and values given in this manual are average values and have been compiled with care. They are not binding, however, and Siemens Airfield Solutions disclaims any liability for damages or detriments suffered as a result of reliance on the information given herein or the use of products, processes or equipment to which this manual refers. No warranty is made that the use of the information or of the products, processes or equipment to which this manual refers will not infringe any third party???s patents or rights. The information given does not release the buyer from making their own experiments and tests.

1. Safety

Safety Symbols

This section contains general safety instructions for using your Siemens 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. Note all warnings and follow all instructions carefully. Failure to do so may result in personal injury, death, or property damage.

To use this equipment safely,

???refer to the FAA Advisory Circular AC 150/5340-26, Maintenance of Airport Visual Aids Facilities, for instructions on safety precautions.

???observe all safety regulations. To avoid injuries, always remove power prior to making any wire connections and touching any parts. Refer to FAA Advisory Circular AC 150/5340-26.

???read and become familiar with the general safety instructions provided in this section of the manual before installing, operating, maintaining, or repairing this equipment.

???read and carefully follow the instructions given throughout this manual for performing specific tasks and working with specific equipment.

???store this manual within easy reach of personnel installing, operating, maintaining, or repairing this equipment.

???follow all applicable safety procedures required by your company, industry standards, and government or other regulatory agencies.

???obtain and read Material Safety Data Sheets (MSDS) for all materials used.

Become familiar with the safety symbols presented in this section. These symbols will alert you to safety hazards and conditions that may result in personal injury, death, or property and equipment damage.

WARNING: Failure to observe this warning may result in personal injury, death, or equipment damage.

WARNING: Risk of electrical shock. Failure to observe this warning may result in personal injury, death, or equipment damage.

Safety Symbols (contd.)

Qualified Personnel

Intended Use

WARNING: Disconnect equipment from line voltage. Failure to observe this warning may result in personal injury, death, or equipment damage.

WARNING: Wear safety goggles. Failure to observe may result in serious injury.

CAUTION: Failure to observe may result in equipment damage.

The term qualified personnel is defined here as individuals who thoroughly understand the equipment and its safe operation, maintenance, and repair. Qualified personnel are physically capable of performing the required tasks, familiar with all relevant safety rules and regulations and have been trained to safely install, operate, maintain, and repair the equipment. It is the responsibility of the company operating this equipment to see that its personnel meet these requirements.

WARNING: Use of this equipment in ways other than described in this manual may result in personal injury, death, or property and equipment damage. Use this equipment only as described in this manual.

Siemens Airfield Solutions cannot be responsible for injuries or damages resulting from nonstandard, unintended applications of its equipment. This equipment is designed and intended only for the purpose described in this manual. Uses not described in this manual are considered unintended uses and may result in serious personal injury, death, or property damage. 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

???using materials or auxiliary equipment that are inappropriate or incompatible with your Siemens Airfield Solutions equipment

???allowing unqualified personnel to perform any task

Installation

Operation

Read the installation section of all system component manuals before installing your equipment. A thorough understanding of system components and their requirements will help you install the system safely and efficiently.

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.

???Make sure all equipment is rated and approved for the environment in which you are using it.

???Follow all instructions for installing components and accessories.

???Install all electrical connections to local code.

???Use only electrical wire of sufficient gauge and insulation to handle the rated current demand. All wiring must meet local codes.

???Route electrical wiring along a protected path. Make sure they will not be damaged by moving equipment.

???Protect components from damage, wear, and harsh environment conditions.

???Allow ample room for maintenance, panel accessibility, and cover removal.

???Protect equipment with safety devices as specified by applicable safety regulations.

???If safety devices must be removed for installation, install them immediately after the work is completed and check them for proper functioning.

Only qualified personnel, physically capable of operating the equipment and with no impairments in their judgment or reaction times, should operate this equipment.

Read all system component manuals before operating this equipment. A thorough understanding of system components and their operation will help you operate the system safely and efficiently.

Operation (contd.)

Action in the Event of a System or Component Malfunction

Maintenance and Repair

???Before starting this equipment, check all safety interlocks, fire- detection systems, and protective devices such as panels and covers. Make sure all devices are fully functional. Do not operate the system if these devices are not working properly. Do not deactivate or bypass automatic safety interlocks or locked-out electrical disconnects or pneumatic valves.

???Never operate equipment with a known malfunction.

???Do not attempt to operate or service electrical equipment if standing water is present.

???Use this equipment only in the environments for which it is rated. Do not operate this equipment in humid, flammable, or explosive environments unless it has been rated for safe operation in these environments.

???Never touch exposed electrical connections on equipment while the power is ON.

Do not operate a system that contains malfunctioning components. If a component malfunctions, turn the system OFF immediately.

???Disconnect and lock out electrical power.

???Allow only qualified personnel to make repairs. Repair or replace the malfunctioning component according to instructions provided in its manual.

Allow only qualified personnel to perform maintenance, troubleshooting, 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.

???Follow the recommended maintenance procedures in your equipment manuals.

???Do not service or adjust any equipment unless another person trained in first aid and CPR is present.

???Connect all disconnected equipment ground cables and wires after servicing equipment. Ground all conductive equipment.

???Use only approved Siemens Airfield Solutions replacement parts. Using unapproved parts or making unapproved modifications to equipment may void agency approvals and create safety hazards.

Maintenance and Repair

(contd.)

2. Description

???Check interlock systems periodically to ensure their effectiveness.

???Do not attempt to service electrical equipment if standing water is present. Use caution when servicing electrical equipment in a high- humidity environment.

???Use tools with insulated handles when working with electrical equipment.

This section describes the Siemens Airfield Solutions L-852 series dualite taxiway inset light fixtures referred to in Table 1.

Optional Film Disc Cutout

L-852A-D Light Fixture:

Required Equipment

In case of lamp failure, an optional film disc cutout is available as an 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. The film disc cutout must be replaced when the lamp is replaced.

CAUTION: Do not use a film disc cutout with voltage driven lights. Transformer may be damaged.

Refer to Table 2 for required equipment that is supplied. Refer to Table 3 for required equipment that is not supplied. Refer to the Parts section for part numbers.

Table 2. Required Equipment Supplied

3. Installation

Introduction

Unpacking

Input Requirement Summary

Installation Procedure

WARNING: Allow only qualified personnel to perform the following tasks. Observe and follow the safety instructions in this document and all other related documentation.

This section provides instructions for installing the L-852A-D runway inset lights. Refer to airport project plans and specifications for the specific installation instructions. The installation shall conform to the applicable sections of the National Electric Code and local codes.

Each unit is individually packaged in a durable, cushioned, corrugated cardboard carton. To avoid unnecessary damage to the light assembly, unpack the carton at the installation site.

To unpack the carton, open the flaps and carefully remove the top packing material. Thread an eyebolt into each of the two opposite threaded holes. Run a rod through the eyebolts and lift the light assembly from the shipping carton. Set the light assembly in a protected area.

If damage to any equipment is noted, file a claim form with the carrier immediately. The carrier may request to inspect the equipment.

The L-852A-D is designed for connection to a 6.6 A or 20 A series lighting circuit via an L-830 isolation transformer. Refer to Table 3.

Installing the L-852A-D light fixture involves preparing the pavement recess and wireways and installing the light fixture on an L-868B base. Install the L-852A-D light fixture on a shallow base, if applicable.

Pavement Recess and Wireways Preparation

To prepare the pavement recess and wireways, follow the guidelines below.

???See Figure 3. Drill the recess in the pavement. For the L-852A-D dualite fixture, drill the hole a minimum of 4.5 in. (104.3 mm) deep.

Installation on L-868B Base

(contd.)

Installation on Siemens Airfield Solutions Shallow Base

4.Turn on the power. Operate the light assembly for a minimum of five minutes. Turn off the power and allow the light assembly to cool.

5.Position the light assembly over the L-868B base and set onto the base. Align the light to the runway centerline. Make sure all spaces, shims, and gaskets are in place before installing light fixture on the base.

Remove the eyebolts and lifting rod.

6.Turn on the power to check that the lamp will illuminate. Operate for a minimum of five minutes.

CAUTION: The light assembly will be hot after this test. Allow time for assembly to cool before proceeding.

7.Apply one drop of Loctite AV to each of the six light assembly mounting bolts. Install the six bolts and lockwashers. Torque the bolts to 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 Solutions shallow base, perform the following procedure:

1.Splice the light assembly leads to AWG 16 wires with suitable pre- insulated connectors, crimped with the proper tool.

2.Train the leads and AWG 16 wires carefully so they run along the bottom of the sawed wireways.

NOTE: Small wads of plastic insulating tape may be used to wedge the leads and cables in the bottom of the wireways if necessary. Refer to Table 4 for the appropriate isolation transformer required for installation between the fixture and the series lighting circuit.

3.Make sure the O-ring is seated in the O-ring groove before bolting the fixture to the shallow base.

4.Lightly sand blast and clean with solvent all external surfaces that will be bonded into the runway, except for the wire entrance seal. This is done to make sure an adequate bond between the shallow base and sealer exists.

CAUTION: Do not handle the light fixture by the leads. This can break the waterproof seal and cause electrical leakage.

Installation on Siemens Airfield Solutions Shallow Base (contd.)

5.See Figure 4. Use an alignment jig to align the light assembly. The jig has three positioning screws that fit into the tapped holes holding the light fixture to the shallow base.

Installation on Siemens Airfield Solutions Shallow Base (contd.)

6.To attach the alignment jig, remove bolts #1, 2, and 3 from the light fixture.

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.

NOTE: It may be necessary to place temporary plugs for blocking the wireway entrance into the drilled holes or recess. The plugs will retain the sealer during the setting of the light assembly.

8.Cover the bottom of the shallow base completely with a P-606 paste- type sealer. Place a sufficient quantity of P-606 paste material in the drilled hole to forge material out when the base is inserted. This ensures a bond between the bottom of the shallow base and the drilled hole.

NOTE: When the base is placed in the recess, sealer material should be forced up the sides of the base at least 1/8 in. (3.175 mm).

NOTE: The jig is used to position the light assembly with arrows on the top of the fixture pointing along the taxiway centerline.

9.If necessary, place a weight on the jig to hold the light assembly in proper position.

10.Fill the remainder of the space between the sides of the base and the drilled recess with a liquid sealer to a level 3/4 in. (19 mm) below the pavement surface. The jig should be left in place until the sealer reaches its initial set.

11.If any voids are present around the shallow base after the initial set, they should be filled with P-606 paste and all excess sealer removed. Remove the jig for complete visibility of voids.

12.Fill the top 3/4 in. (19 mm) gap between the fixture and pavement with flexible sealing material to minimize water penetration and pavement deterioration.

13.Apply grade AV Loctite to the bolt threads, and reinstall the three bolts and lockwashers. Torque bolts to 185 ??5 in-lb (20.9 ??.6 N-m).

14.Fill the wireways completely with a polyester compound and let it cure at least 24 hours before disturbing, unless otherwise specified. Refer to AC 150/5345-4C for construction and sealing instructions for wireways.

4. Maintenance

Maintenance Schedule

This section provides maintenance information and procedures for the L-852A-D light fixture.

Service life depends upon the entire assembly being waterproof. All 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.

To keep the L-852A-D light fixtures operating efficiently, follow a preventive maintenance schedule. Refer to Table 6. Refer to FAA AC 150/5340-26 for more detailed information.

6. Repair

Replacing Film Disc Cutout

Assembly

This section describes procedures for repairing and replacing parts.

It includes replacing the film disc cutout assembly, the lamp, and prism.

To replace the film disc cutout assembly, perform the following procedure:

1.Remove eight screws from bottom cover assembly.

2.Remove and inspect o-ring. Discard if damaged, affected by compression set or no longer fits in groove.

3.Remove and replace cordsets and film disc cutout hardware as required using Figure 6 as a guide.

7. Parts

Using the Illustrated Parts

List

To order parts, call Siemens Airfield Solutions Customer Service or your 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 illustrations following each parts list. NS (not shown) indicates that a listed part is not illustrated.

The Description column gives the part name, as well as its dimensions and other characteristics when appropriate. Indentions show relationships between assemblies, subassemblies, and parts.

The Part Number column gives the Siemens Airfield Solutions part number.

L-852A-D Light Fixture Part

Numbering System

The Note column contains letters that refer to notes at the end of each parts list. Notes contain special ordering information.

Figure 7 shows how to determine the part number for a particular L-852A-D light fixture.