The main motor of the air compressor is often overheated and overcurrent?

As we all know, air compressors are heavy-duty equipment. When designing air compressors, air compressor manufacturers must achieve a high energy efficiency rating and control cost. The selected motor power has no amplification margin to meet the energy efficiency rating. Increase the cost advantage of producing air compressors.
In the initial production stage, because the air compressor is a new machine, the motor efficiency is high, the rotor moving parts are in good condition, the vibration is small, the friction resistance of each component is small, and the motor is output shaft power is also small, so the motor runs relatively easily.
After many years of operation, the efficiency of the motor will decrease compared with that before, and the gap between the mechanical components will increase. Under the same output gas flow rate, the motor current will increase, the heat generated by the motor coil will increase, and it will be easy to act as a motor over-motor and thermal overload protection. Seriously will burn the motor coil.
In view of the above situation, the following suggestions are made: 1. Lower the unloading pressure of the unit; 2. If the unit has the adjustment mode, modify the unit to use the adjustment mode; 3. Use certain measures to increase the heat dissipation of the main motor;

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