Explosion proof motors are extremely dangerous special electrical equipment. If rust or rust spots form on the explosion-proof surface and the contact with the contact surface deteriorates, harmful media will enter the machine and corrode the internal parts and winding insulation layer. If the explosion-proof motor loses its explosion-proof function, the consequences could be catastrophic. Therefore, timely detection, maintenance, and elimination of explosion-proof motor faults are very important. How to use explosion-proof motors? Let's take a look at the common obstacles and troubleshooting methods of explosion-proof motors together.
1. Due to improper maintenance and installation, the explosion-proof surface has been severely corroded.
Therefore, you should adopt the correct installation process and carefully inspect and maintain according to the maintenance system.
2. The explosion-proof surface has been severely damaged.
This is caused by incorrect installation or transportation. If maintenance is difficult, it is necessary to replace the same type of motor.
3. The sealing ring is damaged and has no sealing effect.
This is caused by incorrect fixing screws. If the screw is tightened too tightly and too firmly, the sealing ring will break. If the screw is tightened too loosely, the sealing ring will corrode externally and be easily damaged, resulting in a decrease in sealing effect. If the material of the sealing ring is not good, it may cause premature damage, so please replace it with certified sealing material at this time.
4. Severe deformation of explosion-proof surface.
This is due to poor machining accuracy of the parts, improper material handling, and improper operation. Uniform force must be applied during installation, and processing must be carried out according to the accuracy and roughness of the pattern. If the explosion-proof surface is severely deformed, it will be difficult to repair it, so if necessary, please replace it with a new surface. Minor deformation is caused by incorrect installation and can be reassembled.
5. Poor daily maintenance.
There are several aspects of performance: excessive dust, failure to clean in a timely manner, loose screws, failure to check and tighten in a timely manner, damp insulation, reduced insulation resistance, and corrosion of explosion-proof surfaces. Therefore, it is necessary to carefully inspect and repair according to maintenance regulations.
6. Motor overheating.
Usually, the causes and solutions for motor overheating are as follows: damaged ventilation system, damaged fan, or incorrect model. The solution is to conduct regular inspections and maintenance, and to promptly address existing issues; Motor bearing failure can cause the motor core corresponding to motor overload to sweep and require timely replacement of qualified bearings; The motor is overloaded and the load needs to be readjusted according to the motor capacity; The power supply voltage is too high or too low, and the power supply voltage has reached the rated value. During major repairs, winding faults have been promptly confirmed, such as corroded motors, confirmed seals and screw fasteners, short windings, single-phase open circuits, and winding grounding.
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