Maintenance and Inspection
8-7
Air Filter
If the air filter is clogged with dirt and dust, the cooling capacity of the Inverter will be degraded, resulting in
abnormal temperature rise. Check the air filter for dirt and dust at each daily inspection, and periodically clean
it with neutral detergent.
Control Board
Visually check the control board for the following items.
1. Abnormal smell or discoloration of the board
2. Loose screws or connectors
Cooling Fan
Inspect the cooling fan as described below.
1. Check for abnormal vibration or noise
2. Retighten the mounting bolts.
3. Measure the motor insulation resistance.
The measured resistance must be 10MΩ min
4. Servomotor bearing
The service life of a bearing is approx. 15,000 hours.
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