The air conditioning compressor is the key component of the air conditioning unit, and the 8 main reasons for the compressor burnout are as follows:
1. The air conditioning compressor starts frequently. During the starting process of the air conditioner compressor, there is usually a step-down starting circuit, but the starting current will be several times of the rated current, and the starting temperature of the air conditioning compressor will rise very quickly. If the temperature of the air conditioner is not set properly, the refrigeration temperature is too low and the heating temperature is too high, the air conditioner compressor will be switched off frequently, and the service life of the air conditioner compressor will be shortened.
2, air conditioning supply voltage unstable power supply voltage quality is not good if the voltage is too high or too low, have an adverse effect on the air conditioning compressor motor, especially the use of air conditioning compressor exceeds the rated voltage range, the improper, long-term operation in the air conditioning compressor motor overheating caused by inefficient, poor insulation, motor winding burned. In addition, the three-phase voltage or current unbalance, will cause the loss of motor (iron loss and copper loss) increased, the air conditioning compressor motor coil high temperature superheater, improper protection, air conditioning compressor motor insulation burned, causing air conditioning motor coil short circuit burned.
3, air conditioning systems are not clean copper containing water, the water will lead to poor insulation and air conditioner; water and refrigerant and refrigerant oil circulating in the system, with high temperature and low temperature changes, will produce acidic substances, and the insulating layer will damage the motor, working for a long time the air conditioning compressor motor will be burned.
4, the compressor compressor rotating components stuck in this case, if the motor protection action failure, the air-conditioning compressor motor may be overloaded, burned.
5, the air conditioning compressor burned after the refrigeration system is not clean to have air conditioning and refrigeration system compressor burning fault, must take the refrigeration system of thorough cleaning, air conditioning compressor motor burned will produce strong acid and resides in the system, if not clean, the operation of the air conditioning compressor motor after the new residual acid corrosion the air conditioning compressor motor insulation layer, resulting in a new air conditioning compressor burned.
6, air conditioning compressor cooling bad air conditioning system overheating, poor control, return gas temperature is too high or low gas return, make compressor motor coil cooling is insufficient. For air-cooled heat pump units, this situation occurs more frequently, and the return air temperature is too high, will lead to exhaust temperature is too high, resulting in a series of air-conditioning compressor problems.
7, air conditioning compressor itself has manufacturing process defects, generally for the time is not long, air conditioning motor is burned, may be air-conditioning compressor manufacturing itself.
8, air-conditioning compressor starting contactor, fault contactor, contact resistance is too large or sintering, resulting in air conditioning compressor motor short-circuit burning, or line contact is bad, the starting current is large, it is easy to burn the air conditioning compressor.