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How to maintain the electrical circuit of the fan

How to maintain the electrical circuit of the fan?
1. Whether the mechanical opening and closing action of the fan valve is flexible and reliable, and whether the opening and closing angle signs are clearly visible.
2. Check whether the fan indicator, voltage meter and current meter are normal. Whether there is abnormal sound during the operation of each part of the fan and whether the three-phase current value is balanced.
3. Check whether the components in the control box of each remote control point of the fan are normal.
4. Continuously start and stop the fan and check whether the remote control at each point is correct and reliable.
5. Test run the fan for two hours and observe whether the motor bearing temperature and motor temperature rise are within the normal range.
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