1. The main drive motor is not functioning properly slip motor during operation, severe vibration will cause bearing fever. Clutch armature and rotor poles apart, check the motor bearings is a serious lack of grease, causing serious bearing wear, running motor performance decline. nidec motor needs to be replaced damaged bearings and grease filling good. Under normal circumstances, this part of the body to deal with all the components to conduct a cleaning, refueling, to ensure the normal operation of the main drive motor.
　　2. Host speed cyclical decline that happens, because most of them are caused by faulty mechanical parts, rubber roller motor speed more, each bearing supported by rubber rollers move. If any of the root end of a rubber roller bearing is faulty, may cause a host of speed underground cyclical peak, serious, hosts move will be more setbacks, should that replacement bearings for the job. In addition, it should be noted the host of each roller bearings and lubrication of the work is normal, if a failure occurs it will also affect the printing speed.
　　3. Speed up speed machine motor speed gradually decline or even stop this happens, you need to observe the changes in the electrical cabinet speed motor ammeter pointer. If it indicates that the current increases rapidly, thermal overload relays and other devices are the main motor is bound to produce a protective action, so that the main motor disconnect phase power and stop running. Then need to carefully check the relevant wiring components and the main motor AC contactor main motor circuit, wiring electrical cabinets speed motor parts for all thermal overload relays and other devices are loose, contact is bad and fever. If these parts of the subject heading, then after the main motor growth, due to the circuit conductors and components to make poor contact current increases rapidly, which leads to a protective stop. At low speed motor operating speed, since the main motor operating current is small and does not wish the gas velocity gradually decreases situation occurs even shutdown, however, when the speed of the motor increases the speed, a large power load, electrical components failure will be revealed. In practice, sometimes you can see the speed of the motor terminals electrical cabinet and fever due to poor contact wire, and even appeared at the junction of the oxide layer, insulated wires outside the anti-scorch discoloration, these titles will seriously affect the main topic normal operation of the drive motor. The operator then need to immediately take appropriate measures, such as cleaning the terminals and wires of the contact surface, servo tighten terminal screws to remove the oxide layer burned wires, replace badly damaged terminals, etc.
　　The main drive motor noise when running large motors in order to adjust the slip balancing its armature and the ends of the rotor poles are equipped with heavy equipment. If this part of the device is slightly loose, then slip motors move at high speed will deviate from the original location Bian. If a fault occurs outside the Swiss side of the main drive motor, it will cause local friction armature and the pole of the rotor, the noise increased. Then you need to stop to repair and restore the armature and the poles of the rotor balancing and re-balancing the weight of the original find a good position and fixed, so that the main drive motor is running.
　　5. The main drive motor brake solenoid clutch must be kept burning speed motor brake clutch yoke, armature, friction plates and other parts clean and free of oil and any debris. Regardless of any electrical components, if the excess adhesive paper hair, dust and metal shavings and other impurities, work over time, so that the electrical components lightly fever, bad, and the friction of these impurities increased film does not pull in the clutch friction fit on the work load and damage when. In this case, electrical components due to poor contact and not pull its temperature rises, the electromagnetic clutch brake coil insulation would be premature damage that eventually burned. Therefore, pay special attention to maintenance, brushless DC motor regularly scrub with a brush dipped in gasoline and other oil and other impurities friction plate member, to speed motor electrical cabinet all electrical components above paper hair, dust and other impurities to clean up, to conducive to the clutch cooling ventilation, reduce losses, lower operating temperatures, extending the life of electrical components.