1. Alternator
a) Insulation resistance of windings are not checked and recorded. Deterioration of cannot be ascertained.
b) Cable terminal box is seldom opened up to inspect for loose connections and heating.
c) Electric heater or carbon lamp is not used to heat up windings to remove moisture when alternator is not in operation.
d) Blowing of windings is only done at overhangs. Little attempts are made to remove dust and dirt in other areas of alternator's windings.
e) Lubrication of bearings are not properly recorded to maintain standard time for greasing.
f) Diode connections to rotating disc are not, checked by torque wrench and as such under and over tightening occur. Both can lead to failure of rotatinz diode assemblies.
2. Main Switchboard
a) Arrangement is not made to re - calibrate the overcurrent and earth fault relays periodically.
b) Defective meters, indicating lights, switches and lighting fittings are commonly found. This shows lack of maintenance.
c) Cleaning of trench is not done. Water, debris, cockroaches and rats are coomon sight.
d) Front, side and back covers are not close tightly. Gaps are left behind inviting the entry of vermin.
e) Defective power and control fuses are not replaced but instead shorted with 'cooper wires . This can lead to fire hazard.
f) Main switchboard is seldom being coened uo to check for loose connections and excessive heating.
g) The top of main switchboard is dirty and couple with rain water through leaking roof has caused rust tc set in. -This leads to entry of water inside main switchboard and probably short-circuits.
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