1. Use visual judgment. The so-called visual judgment of use is to observe the reading changes of each instrument of the dryer, the situation of each connecting part, the leakage of the sealing surface of each joint, the abnormality of each oil and water, the heating of the motor and so on. 2. Use auditory judgment. The so-called auditory judgment is to listen to whether the sounds made by various parts of the dryer are normal, and if there are abnormal phenomena, determine the source of the abnormal sounds; 3. judge by smell. The so-called olfactory judgment is to smell the parts of the dryer and the oil at the parts with your nose. Among many washing equipment, linen dryer is indispensable. Linen dryer is used to dehydrate washed clothes, and its task is to remove water from clothes, so as to achieve the purpose of drying clothes. Generally speaking, the flax dryer includes a rotating drum, the inner drum rotates rapidly under the drive of the transmission belt, so that water molecules are separated from clothes under the action of centrifugal force, and the evaporation of hot air around the drum makes a small amount of water molecules remaining in clothes fully volatilize, thus realizing the drying of flax, which is quite simple and convenient to use. In more detail, I suggest consulting a professional dryer manufacturer.