Table of Contents
Advertisement
L860 Elevated Low-Intensity Edge Light
4. Installation
Base Mounting
Light Base Mounting
© 2008 Siemens Airfield Solutions
All rights reserved
This subsection provides installation instructions for the L-860 light
fixtures.
L-860 light fixtures can be mounted on an L-867 base plate with a
diameter and bolt-hole corresponding to either a 12-inch- (304.8
mm-) diameter L-867B base or a 16-inch- (406.4 mm-) diameter L-
867D base plate per FAA AC 150/5345-46. The base plate is designed
to receive a frangible coupling using a female thread. The standard
coupling thread is 1-1/2 -12UNF optional thread is 2-11-1/2 NPT, and
2-11 TPI (ICAO application). A gasket is supplied with the base plate
to form a watertight seal between the base plate and the L-867 light
base per FAA AC 150/5345-46.
NOTE: Install the base according to FAA Advisory Circular AC
150/5340-30 and site plans.
To install the base, perform the following procedure:
1. Install the L-867 base on undisturbed soil. If the soil is
unsuitable, remove soil to an adequate depth and replace with
compacted acceptable material.
NOTE: In closed duct systems, install in soil conditions with good
drainage. Use light bases having a drain hole to prevent water
accumulation.
2. Orient the cable entrance hubs of the light base in the proper
direction according to site plans.
3. Level the light base so that the mounting flange surface is level
with the finished grade.
4. With the base at the proper orientation and held at proper
elevation, place approximately 4 inches (101.6 mm) of concrete
backfill around the outside base.
NOTE: If the concrete backfill is omitted, the earth backfill must
be compacted to maintain proper elevation and orientation of
the base.
5. Slope the top of the concrete away from the flange portion of the
base so the sloped outer edges of the concrete are at surface
grade.
6. Hand screw the entire L-860 fixture onto the base plate. Finish
tightening the fixture by using a wrench on the flat areas of the
frangible coupling.
96A0388B
Issued 6/08
Page 3-2
Advertisement
Table of Contents
