Installation On L-868B Base - Siemens L-852A-D Dualite Manual

Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures
© 2001 Siemens Airfield Solutions, Incorporated
All rights reserved
Pavement Recess and Wireways Preparation
•
Make sure the recess size and depth are maintained within specified
limits.
•
The recess side walls must be perpendicular to the pavement surface.
•
The bottom surface must be flat or slightly concave to ensure that the
base receptacle is resting securely and in true position.
•
The recess can best be drilled using a 13-in.- (330-mm-) diameter
diamond-faced core drill in a sturdy, stable drill rig.
Wireways Preparation
To prepare wireways, follow the guidelines below.
•
See Figure 3. The wireways should be sawed using a 3/8-in.-
(9.525-mm-) thick diamond-faced saw.
•
When the wireways cross construction joints, the sawcuts should
extend 1-1/4-in. (31.75 mm) below the existing joint for a distance of
6 in. (152.4 mm) on each side of the joint.
•
Fill to 1 in. (25.4 mm) from the top of the pavement with an
appropriate joint sealing filler in accordance with Item P-605 or P-606
of FAA publication Standard Specifications for Construction of
Airports. Item P-605 should be used with asphalt, and Item P-606
with concrete.

Installation on L-868B Base

The light assembly is shipped complete, including the lamp, and is ready
for installation.
To install the L-852A-D light fixture on the L-868B base, perform the
following procedure:
1. Clean the base receptacle. Make sure that the base receptacle does not
contain water and is completely clean and dry. The mating surfaces
must be clean and free of foreign particles.
2. Slide a 16-inch- (406-mm-) long rod through the 3/8-inch-
(9.525-mm-) diameter eyebolts and carry the light assembly to the
base. Align the light assembly with the runway for proper light
direction.
3. Place the light assembly beside the opening in the L-868B base so that
the L-823 connector can be connected with the mating receptacle from
the L-830 isolation transformer in the base. Make sure that the
96A0149E
Issued 5/01
Installation
(contd.)
Page 14