Siemens L-852A-D manual Cleaning Light Channel and Prism contd, Retorquing Mounting Bolts

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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. After the solvent has acted, remove the softened coating with a clean

piece of cotton or cloth. Dry the prism with gently, dry, oil-free compressed air at a pressure no greater than 10 psi (69 KNt/m2) to evaporate or remove all remaining cleaner.

Retorquing Mounting Bolts

When retorquing mounting bolts, apply one drop of Grade AV Loctite to each of the six 3.8-inch- (9.525-mm-) diameter mounting bolts. Torque the bolts to 185 ±5 inch-pounds (20.902 ± 0.565 Nt-m). Torque the bolts across the corners.

See Figure 3. To torque the outer bolts across corners, tighten bolts in noted sequence: #1 and #4, then #2 and #5, then #3 and #6.

NOTE: Applying more than one drop of Loctite to the screw and bolt threads will create future difficulty in removal of the bolts.

NOTE: After several relampings, threaded holes may accumulate with dirt and excessive Loctite. If this occurs, screws may not seat properly. Clean holes with light weight oil or diesel fuel using a small fiber brush. Wipe the holes clean with alcohol to remove all oil or diesel fuel and dirt. Clean with dry, oil-free, low-pressure air.

Removing L-868B Base Water

Turn off the circuit when checking water level.

Check the water level in the L-868B base on a regular schedule. If more than six inches (152.4 mm) of water in the light base is found, pump the water from the base and remove and inspect the entire light assembly for water damage. Cover the L-868B base with the appropriate steel cover plate after removing the light assembly.

Water does enter the L-868B base. This can become a serious problem, since freezing water can rupture the base.

© 2001 Siemens Airfield Solutions, Incorporated

96A0149E

Page 22

All rights reserved

Issued 5/01

 

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Contents Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures Record of Changes Rev Description EC No Checke Approved DateTable of Contents List of Figures List of Tables Warranties Disclaimers 96A0149E Safety Safety Symbols Type L-850A Dualite Bidirectional Runway Light Fixture96A0149E Safety Symbols contd Qualified Personnel Intended Use Installation Operation 96A0149E Description Type FunctionOptical Assembly Description contdOptical Assembly Description Quantity Specifications Dimensions WeightIf you order this This connector is supplied MountingPavement Recess and Wireways Preparation Pavement Recess and Wireways Preparation contd Recess HoleWireways Preparation Installation on L-868B Base96A0149E Installation on L-868B Base Installation on Siemens Airfield Solutions Shallow BaseAlignment Jig 852A-D Light Fixture 96A0149E Maintenance Procedures Maintenance Maintenance ScheduleInterval Maintenance Task Action Cleaning Light Channel and Prism Replacing LampBolt #1 Bolt #6 Bolt #2 Bolt #5 Bolt #3 Bolt #4 Retorquing Mounting Bolts Cleaning Light Channel and Prism contdRemoving L-868B Base Water Troubleshooting Troubleshooting contd Repair Replacing Film Disc Cutout Assembly 96A0149E Replacing Lamp Replacing Lamp contd 852A-D Light Fixture Part Numbering System Parts Using the Illustrated Parts ListDescription Part Number Filter Colors Film Disc CutoutLamp 852C or D Options 852A, B, or C Options852A-D Light Fixture Parts ListList contd 104 mm Recommended Spare Parts

L-852A-D specifications

The Siemens L-852A-D is an advanced lighting system designed primarily for airport applications, providing a robust solution for runway edge lighting. This innovative product is engineered to enhance safety and operational efficiency in various weather conditions, catering to the unique demands of modern air traffic management.

One of the most notable features of the L-852A-D is its LED technology. The use of light-emitting diodes significantly increases energy efficiency compared to traditional incandescent lights. LEDs are known for their long lifespan, often exceeding 50,000 hours, which translates to reduced maintenance costs and less frequent replacements. This is particularly beneficial in airport environments where minimizing downtime is crucial.

The L-852A-D is designed to provide exceptional visibility with its high-intensity output, crucial for both day and night operations. The system's optical design ensures uniform light distribution, which enhances pilot awareness and improves navigation during takeoff and landing. Additionally, the device is engineered to comply with international aviation standards, ensuring reliability and safety in all conditions.

Another key characteristic of the L-852A-D is its durability. The system is constructed to withstand harsh environmental conditions, including extreme temperatures, high winds, and moisture. Its housing is built from corrosion-resistant materials, ensuring longevity even in challenging climates. The product is also designed to be highly resilient to impacts, which is essential in high-traffic airport settings.

The L-852A-D incorporates sophisticated control technologies that enable adaptive lighting capabilities. This feature allows for automatic adjustments based on external conditions, such as visibility levels, significantly enhancing operational efficiency. Furthermore, it can be integrated with central control systems, allowing for seamless management and monitoring from a single point.

Safety is paramount in airport operations, and the L-852A-D includes features that enhance user and operational safety. Its low profile reduces the risk of physical hazards, while the integrated fail-safe mechanisms ensure continued operation in the event of a power failure.

In summary, the Siemens L-852A-D runway edge lighting system combines advanced LED technology, durability, and intelligent control features to provide an efficient and reliable solution for airport environments. Its main attributes include energy efficiency, long lifespan, compliance with regulatory standards, and robust construction, making it an ideal choice for enhancing safety and operational efficiency in aviation lighting.