Describe the maintenance requirements of the cable tower equipment
1. Main maintenance contents of arm-holding pole and cable rack:
1. Check whether the roof pole is stable and firm, whether the pole lightning rod meets the requirements, and whether the surface is corroded.
2. Check whether the cable rack is stable and firm, and whether the surface of the cable rack is corroded.
3. Check whether the pole and cable rack are reliably connected to the original ground on the roof and the base station grounding system, and test the grounding resistance of the base station grounding system (required to be less than 4 ohms).
2. Main maintenance content of antenna feeder system:
1. Correction of azimuth and depression angle of antenna (according to the accurate parameters provided by local branch offices).
2. The feeders are neatly arranged and fixed firmly, and the binding process meets the requirements.
3. Check whether the antenna is intact, damaged or broken.
4. Check whether the antenna is firmly installed.
5. Check whether the antenna connector is in good contact and whether the radius of curvature of the tail wire meets the requirements.
6. Check whether the omnidirectional antenna verticality meets the requirements.
7. Check whether the horizontal spacing and vertical spacing of the antenna meet the requirements.
8. Check whether the antenna is within the protection angle range of the lightning rod (<45º).
9. Check the connector of the antenna feeder, the waterproof treatment of the three-point grounding junction of the feeder should meet the requirements, the tape is tightly packed, there is no cracking, the glue is full, and there is no water ingress.
10. Check whether the three-point grounding contact of the feeder is good, and whether there is reverse connection or wrong connection in the order of the antenna feeder.
11. Check whether the grounding wire bolt at the feeder grounding copper bar is loose, whether it has fallen off, or is corroded by oxidation.
12. Check whether the radius of curvature of the feeder meets the requirements, and whether the waterproof bend meets the requirements before the feeder enters the equipment room.
13. Test whether the lightning protection grounding resistance is less than 4 ohms.
