5.3.3 Periodic inspection of motor
1. Inspecting judgment
Inspection frequency of the motor is related with operation time every day. But at thick
dust or high humidity place, it is necessary to add inspection frequency.
More than 12 hours everyday
Less than 12 hours everyday
Periodic inspection must be done according to the following list.
Visualization, hearing: grease
leakage, noise and dust
Visualization: high roughness
because of damage, rustiness.
Visualization: looseness,
rustiness and dust
Tighten,
antirust, replace.
Visualization: high roughness
because of damage, rustiness
Visualization: connection,
looseness, insulating treatment.
Visualization: damage of
covering protection.
Insulating resistance higher than
1MΩ (measured with 500V
ohmmeter).
Clean, heat,
treat with varnish
Visualization: damage, discolor,
peeling and rustiness.
Visualization: dirty, dust, and
rustiness.
Clean, antirust
and paint