Saturday 29 August 2009

Motor ; Faalures by External Influence & Opreational

Causes
a) Ingression of liquid
b) Motor flooded
c) Chemical erosion
d) Attacks by rodent,

Results
Leading to short-circuit or open-Circuit of windings

Prevention
a) Provide cover for motor
b) Install motor at safe location.
c) Apply rat bait at infested areas.

Operational
Cause


Frequent start and stop to remove choking at machinery.

Results
Windings overheat.

Prevention
a) Change working habits of operator.
b) Improve supervision by MA.
c) Install thermal switch at windings.

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