- The dust bag is too ash and can be cleaned by vibration. However, if the bag is clogged, it is more troublesome. According to the load of the induced draft fan, the load may be reduced or the furnace may be shut down.
- The ash cleaning device of the bag filter has lost its proper function, so that the dust layer adhering to the surface of the bag becomes thicker and thicker, causing a sudden increase in pressure difference.