The reason why the current of the compressor of the constant temperature and humidity test chamber increases

Constant temperature and humidity test chamber, also known as constant temperature and humidity test machine, constant temperature machine or constant temperature and humidity chamber, is used to test the performance of materials in various environments, and test the heat and cold resistance of various materials, as well as dry and humidity resistance. It is suitable for quality inspection of electronics, electrical appliances, mobile phones and other products. In the process of use, sometimes the current of the compressor of the constant temperature and humidity test chamber may be too large, so what are the reasons?

1. The input power supply voltage is too low, that is, it is so low that the voltage value that only allows operation is low, and the above situation will occur.

2. Repair the short circuit between the compressor brakes, but it did not reach the level of cutting off the fuse.

3. The "secondary friction" of repairing the compressor destroys the cleanliness of the friction surface, and the power current of the compressor increases, but it does not reach the shaft holding and cylinder jam, and the rated speed may not be reached, resulting in a constant temperature and humidity test chamber The compressor can not rotate normally, resulting in excessive starting current.

Fourth, the refrigeration system is affected by external factors, just like the condenser is close to the wall, the pipe is too dirty, the natural air condensing effect is poor, and the hot air cannot be dissipated.

5. Sudden power failure and sudden power on, the high and low pressures in the system are not completely balanced, and the start-up is difficult, resulting in excessive current.

6. If the refrigerant in the compressor leaks, the temperature will be difficult to drop, and the continuous operation of the motor will also cause the compressor's current to be too large.

7. The starting relay fails and the thermal protector loses its capacity, resulting in excessive current.