The insulation of the motor is easily affected by moisture during transportation, storage and installation. When the insulation is affected by moisture, the electrical strength is *ly reduced, and it is easy to cause a breakdown accident when it is directly powered on. Therefore, the cone crusher motor must be dried. Which cone crushers need to be dried?

　　Newly installed motors generally need to be dried because they may be affected by moisture during transportation, storage and installation.

　　For motors that have been put into operation, if the insulation resistance value drops after long-term disuse and is lower than the specified value, it needs to be dried.

　　When the insulation resistance value of the motor is lower than the specified value due to maintenance or poor use conditions and other reasons, it needs to be dried.