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Reasons for excessive fan bearing temperature and fault handling

Source: Bearing network time: 2014-04-21

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Bearing temperature overrun is one of the important factors that cause bearing damage. The main reasons for the high bearing temperature are as follows:
(1) The quality of the rolling bearing installation is poor. If the tightening force of the inner sleeve and the shaft is not good, the gap between the outer sleeve and the bearing housing is too large or too small.
(2) The sealing felt is too tight and hot.
(3) The lack or suspension of the cooling water of the bearing; affecting the heat out; and increasing the bearing temperature.
(4) poor smooth quality. Smooth intent; is to make some dynamic non-direct touch conflict; and constitute a conflict between solid and liquid. If the amount of smooth oil is lacking or poor quality; it will cause some direct conflict heat; or heat Can not be carried away by smooth oil; and the bearing temperature rises.
(5) The bearing oscillation is too large to accept the impact load; seriously affecting the stability of the smooth oil film.
Fan motor bearing temperature is high fault handling:
1. If the temperature is high, the error is sent; if the temperature is guaranteed, if the temperature is indeed high; temporarily add the fan to enhance the cooling. Let the inspection check whether the fan oscillation is too high; the motor bearing; check the oil quality, oil level; whether the bearing is damaged; and measure the motor bearing temperature 3. Determine whether the temperature does increase; see if the motor coil temperature can rise; whether the load can be too large.
4. Decrease the induced draft fan A output; reduce the load; reduce the total air volume. Pay attention to avoid the two fans from surging due to load imbalance.
5. Contact the helper to pay attention to the turbine / electrical, report the value of the long; contact maintenance.

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