MAINTENANCE

 9.8 MAINTENANCE

PREVENTIVE MAINTENANCE

In case of non-availability of continuous automatic logging features for taking measurements in the system, the following measurements are to be taken manually;

A) Daily:

i) Battery set voltage and UPS/charger output/input voltage.

ii) Failure list of the subscribers.

iii) Working of Lights, Air conditioners.

iv) System status listing.

v) Failure history list.

vi) Alarm checking

viii) Room temperature recording

Fortnightly:

i) Individual cell Voltage and load test of the batteries, sulphation  of terminals.

ii) Testing of all the trunk circuits.

C) Monthly:

i) Specific gravity in case of non-VRLA batteries

ii) The different modes of operation of FCBC,

iii) Earthing connections of all equipment with earth electrodes.

iv) All cabinets of equipment, Man machine interaction, terminal printer, attendant consoles if available to be cleaned. Cable termination MDF and IDF to be cleaned and checked.

Cable runs-inter rack, rack to IDF, MDF and Attendant consoles to be checked.

vii) BER test of all trunk circuits

viii) Checking of lightning and surge protection devices Functional Testing of Attendant console if available 

ix)Wiring and connecting terminals of power supply arrangement x)

xi) Data Back up to be updated.

D) Quarterly:

i) Testing of All Service features from the Test Telephones.

ii) Cleaning of terminations in CT boxes, Location boxes.

iii) Complete testing of power supply system

E) Six monthly:

i) Earth resistance value measurement

ii) Line loop resistance and insulation testing

F) Yearly:

i) Checking of wiring of subscribers premises, CT boxes and location boxes.

ii) Testing of spare cards