INSTALLATION GUIDE FOR RA-5200
RA-5200 QI
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Page 69
ENU Status : 1-0-0
6 MAINTENANCE
The RA-5200 system is designed for trouble-free operation and generally does not need maintenance.
Maintenance activities should only be carried out by trained personnel.
The equipment operation status can be observed remotely through OMT/OMC.
Periodic inspection of the repeater equipment(s) is recommended. The recommended tasks include:
•
Measurement of the return loss of the feeder system.
•
Ensure the stable connection of cables, power cords and facilities located indoor.
•
Inspect and record operation status and parameters, such as receive signal level, output noise
level, DL output power of the repeater, from OMC or OMT.
•
Check the PSU voltage of MOU.
•
Verify that the actual coverage effects have not degraded.
•
Check the working status of optical TX/RX power.
•
Check the controlling and monitoring function.
•
Verify lightning and grounding protection is in good condition.
•
Ensure the labels are clear and legible.
•
For both Li-ion and optional equipment back-up battery, verify their state. Deeply discharged
battery should be return to Comba for replacement. If the battery voltage drops under 16V within
one hour, replacement of Li-ion battery is recommended.
•
Inspect the integrity of the “O” rings and hex bolts on the enclosure door.
6.1O-RING FITTING DETAILS
The “O” ring serves as an effective alternative to prevent the countersunk door bolt from becoming
loose and as a waterproof option. The “O” rings have already been fitted with the equipment before
shipment, and spare “O” rings are also provided for replacement. When necessary, users can replace
the worn out “O” rings with the spare ones. The following figure illustrates how the “O” ring is fitted with
the equipment enclosure.
Enclosure
!!
Allen Key
O-Ring 7.1X1.8
Bored hole
Countersunk Door Bolt M6X35
Fig 33: “O” ring fitting details
End of section
