Maintenance is necessary for Electric Motors and Generators after the calculated working hours. Such maintenance aims at preventing unplanned stops of your machine and the occurrence of larger and expensive damages.
The factors effecting the maintenance time are as follows:
Nature of the machine: AC, DC, Generator
Type of the machine: squirrel cage, ringed, with collector, with bearing or with metal
Machine particularity: Protective class, operating class, revolution.
The particularity of the equipment driven by/driving the machine: Mill, pump,
compressor, fan, reducer, belt and pulley, diesel engine, turbine.
Machine’s operating environment: Ambient temperature, ambient chemistry, ambient powder, etc... are impactful.
The maintenance period of the motors are generally established by the
manufacturers that used the engine in their machinery and they indicate it in
the machine’s manual. Otherwise, maintenance periods should be established by
expert opinion and usage experience.
Workshop maintenance periods should be planned 3 years for AC ringed engines, 4-5 years for squirrel cage motors and 2 years for DCmotors in average. (These periods
can be shortened or extended with the consideration of other factors).
The onsite and atelier maintenance planning for the generators should be made
through calculation that is based on the working hours and start numbers.
In the table maintenance plan, the recommended maintenance activities have been indicated according to the equivalent working hours.