Eaton Crouse-Hinds 8506A-CS-P1, Instruction Manual

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DOCUMENT 2421
REV. L
Instruction Manual
ICAO Approach Fixture
8
7 Installation
The style 2 IAL light units are shipped complete and are ready for installation as received.
Installation of a light unit is to be done with primary POWER OFF and SECURED. At each
light location, install a steel, Size B, 24 inch deep minimum, L-868 Light Base per FAA AC
150/5340-4 (latest revision). Place the properly sized isolation transformer(s) in the light base
and make necessary primary power connection using L-823 connectors. The light unit
requires a 6.6A secondary transformer. Verify that the mounting flange on the light base is
clean and the o-ring (optional on deep cans) is coated with Dow Corning FS 1292 grease and
is in place on the light base. Connect the plug from the light unit to the secondary of the
previously installed isolation transformer. Installation tool, Crouse-Hinds P/N 19999, will
ease in the installation and removal of the light unit. The threaded eyebolts on the lifting tool
screw into threaded holes in the light fixture. Lower the light unit straight down onto the
base. The light fixture is subject to optical misalignment or mechanical damage if not seated
properly. Secure the light fixture to the base per section 7.1 or 7.2, depending on your base
type.
7.1 Metric Base Installation Bolt Torque and Installation Method
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Use fully threaded A4-70 M10x1.5 bolts. (P/N 21738 is recommended)
•
Use Heico-Lock or Nord-Lock stainless steel lock-washers per FAA specification*.
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Mounting base holes must be degreased, cleaned, and dried prior to bolt installation.
•
Base-to-fixture mating surfaces must be degreased, cleaned, and dried prior to installation.
•
Apply marine grade anti-seize (K=.18) per manufacturer’s instructions to each bolt.
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Install the M10 bolts with lock-washers per lock-washer manufacturer’s guidelines.
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See section 7.3 for Heico-Lock installation guidelines (2014).
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Achieve a full final torque of 26.8 N-m (237 in-lbs) +10%, -0% with a calibrated torque wrench.
•
Impact wrenches are not recommended as installation tools.
•
Check torque and re-torque all bolts within 2 weeks of initial installation.
•
Maintain all bolts by checking torque and re-torqueing per FAA specifications*.
•
If other lubricants or thread locking compounds are used (not recommended), torque must be
recalculated based on K factor provided by lubricant or compound manufacturer.
•
New bolts and lock-washers shall be used each time a light unit is removed from its base.
*Refer to the following specifications for FAA installation and maintenance recommendations:
•
AC150/5340-26 “Maintenance of Airport Visual Aids”
•
AC150/5345-46 “Specification for Runway and Taxiway Light Fixtures”
•
FAA Engineering Brief No. 83 “ In-pavement Light Fixture Bolts ”