20
c) The main reflector is made of aluminum plates. The maintenance person isn’t allowed to
wear shoes with hard soles to avoid damaging the main reflector.
d) Check regularly the thin seal film on the horn mouth surface. If there’s any leakage,
replace it in time or the normal operation of the antenna will be affected.
e) The feed network and wave-guide components adopt rigid connections. Impact and crush
are prohibited.
f) Paint regularly. Spray three-proofing paint onto the antenna once every three years.
g) Check if the components of the antenna have been installed correctly and reliably before
startup. Eliminate the fault symptoms in time if there’s any.
h) Check regularly the seal cover of the synchronization device and check if all connection
points of all cables are sealed. Seal the exposed part with sealant to prevent water leakage
which causes short circuit or makes the equipment burned.
i) When the antenna azimuth operation range changes and requires changing the section, it
is recommended the wind speed be Grade 1~2 and not exceed Grade 3~4 at most. The
position where the section is changed should enable the AZ leading screw to pass the
position of the front support rod of the tripod, that is at AZ 100
°
or 260
°
. Generally 4~5
persons are needed for section changing and one person takes command. The connector
bolts of 6 M30 AZ drive leading screws are taken down, then the AZ drive and the
antenna AZ are pushed to rotate to reach AZ 260
°
or 100° and connector bolts of 6 M30
AZ drive leading screws are reinstalled.
j) Check and maintain the antenna pedestal regularly (three months is appropriate). Be
careful to cut off the power to ensure human and equipment Safety during routine check
and maintenance of the antenna pedestal. Make the following checks:
•
Check regularly the AZ left and right limit the EL up and down limit.Remove the
failure in time if there’s any to prevent such cases as that the limit cannot function
when necessary, thus preventing serious accidents.
•
Check regularly if the motor and the synchronization device are in good condition
and sealed to prevent open circuit or short circuit leading to accident.
•
Check regularly if the exposed screws are fixed well and screw down the loose ones
in time if there’s any.
•
Check regularly if the lacquer coat has been damaged. Paint the damaged coat in time
(with zinc chromate primer and white polyurethane enamel.
