User's Manual

MODEL 2130 MARKER BEACON
5-8 Rev. A April, 2005
This document contains proprietary information and such information may not be disclosed to others for any
purposes without written permission from SELEX Sistemi Integrati Inc.
5.4 Special Maintenance Procedures
5.4.1 Equipment Cleaning and Inspection
a. Antenna system, including antennas and towers. Check all insulators. Inspect and repair all connectors. Inspect the
antenna mounting hardware for loose or broken supporting hardware such as nuts, bolts rivets and welds. Inspect
the monitor probe for visual damage or deterioration. Clean any rusted areas, and apply rust inhibiting paint as
required.
b. Buildings. Inspect buildings for deterioration, both inside and out. Check condition of building paint and for signs of
leaking.
c. Grounds. Check vegetation control, cable marker signs, fences and gates.
d. Air Filters. Inspect and replace as required all building and equipment air filters.
e. Motors. Inspect all motors to determine that they are not overheating. Lubricate as required.
f. Battery systems. Inspect for proper ventilation. Clean any battery corrosion.
g. Safety signs. Inspect the site and install signs as required.
5.4.2 Backup Battery Power Check.
NOTE
Notify Air Traffic Control of the intended check. This procedure takes about one hour to complete, and a possibility exists
that an equipment shutdown or transfer to standby could occur. Since the system specialist is most familiar with the
facility, it is left up to the specialist to decide whether to issue a NOTAM.
a. With the PMDT note that equipment parameters are normal.
b. Locate the AC power circuit breaker for the Marker Beacon.
c. Using a wrist watch or clock, note the current time and switch the equipment AC circuit breaker to the OFF position.
d. For a period of one hour; observe that all equipment monitored parameters remain within normal limits and that no
alarms occur (except for a possible maintenance alert for loss of commercial power).
5.4.3 RF Cable Inspection
a. The following test is performed with the facility operating normally except when inspecting around the antenna,
which will require a shutdown.
b. From the Marker Beacon transmitter and monitor to the antenna, visually inspect the RF transmission cable for
cracks, loose or failed tie wraps, deteriorated weather proofing tape (if used) and sealant.. Inspect for sun or wind
damage to RF cables mounted outside. Also for RF connectors not waterproofed and sealed, hand check the cable
and connectors for tightness.
5.4.4 Measure RF Cable Insulation Resistance
5.4.4.1 Test Equipment Required
An appropriate insulation tester, such as a 500 volt megger.