ADJUSTMENTS AND
MAINTENANCE
UT-MT-0812_2.0_24-01-2023 (EN)
Use and Maintenance Manual
LERA
31
4
ADJUSTMENTS AND MAINTENANCE
Before carrying out any intervention on the device, cut off all external power sources and
place appropriate work-in-progress warnings on the systems.
Wait for the discharging time (at least 5 min) and check using appropriate instruments that
there are no residual energies before accessing the electrical equipment.
To minimize operations, always pay the greatest attention to handling and storage of devices and carry out installation
procedures with extreme precision.
4.1
Scheduled maintenance
In accordance with the suggestions contained in the document FAA AC 150 5340-30, LERA fixtures must be
subjected to regular maintenance.
In order to assure the proper functioning of the fixture and the maximum duration of the operating lifetime of the
device all the checks and periodical audits must be carried out and, if necessary, the necessary corrective procedures
must be activated to restore and ensure operative safety levels foreseen by the standards.
Do not let running devices not properly maintained or fixtures presenting signs of damage
or fault.
Each maintenance operation carried out on the devices must be noted on the maintenance register.
Frequency
Description
every day
Check of the normal operation of the fixture.
weekly
Replacement of fixtures presenting breakdowns or malfunctions.
monthly
External cleaning of the protective glass.
Installation check of the fixture.
every year
Check the stability of the civil works.
unscheduled
Check for the presence of water inside the installation bases (to be carried out during
intervention requiring the removal of the fixture).
Check of the electrical connections and of the isolation degree of the system (to be carried
out during intervention requiring the removal of the fixture).
Check of the mounting seals (to be carried out during intervention requiring the fixture
opening).
Check of the integrity of the electric cables (to be carried out during intervention requiring the
removal of the fixture from the base).
Removal of snow (when necessary). Techniques for snow removal are described in the
manual: Airport Service Manual ICAO -Part 9- Airport Maintenance Practices on in the
FAA AC 150/5200-30 specifications.