ADB Safegate UEL-1-120, Руководство пользователя

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6.0 Maintenance
6.1 Overview
6.1.1 Introduction
In this chapter, maintenance of the UEL light is described as well as the procedures of how to replace the lamp and the optical
cartridge.
Preventive maintenance of the light fixtures should be performed as listed in the table on the next page.
Maintenance frequency depends on the conditions under which the runway is used (i.e. climate, traffic, etc.). The
recommended practices for maintenance are described in the FAA Advisory Circular no. AC 150/5340-26.
Note
For the numbering of the components mentioned in this chapter, refer to the exploded view on § Exploded views .
6.2 Preventive maintenance tasks
In the table below you will find a checklist of preventive maintenance tasks.
CAUTION
Before attempting to service, de-energize and lockout the circuit or the regulator so that the fixture can not be
energized by remote means.
Interval Check Action
Daily Lamp failure Replace lamp.
Dimly burning lamp Replace lamp if discolored, blackened or distorted.
Broken lens Replace optical cartridge.
Weekly Obtrusion of the light beam by vegetation
1. Remove vegetation.
2. Use weed killer.
Dirty lens Clean with glass cleaner.
Monthly Fixture misalignment Straighten level and align fixture.
Semi-annually Presence of water in optical cartridge Inspection of the light: check drain holes and status of
the lens and gaskets.
Paint flaking off Paint anew.
Annually Cracks, corrosion, shorts Repair or replace.
Dirty contacts Clean when system is deactivated.
Loose connections Tighten loose connections.
In prediction of heavy snowfall Mark location of low mounted fixtures (use red flags or
sticks) to facilitate snow removal and lessen the risk of
damage to the fixtures by snow removal equipment.
Notes
*
More frequently during rainy seasons.
UM-4020 / AM02-630e, Rev. 2.0, 2020/05/19 23
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