How to prevent the high and low temperature damp heat test chamber compressor from starting continuously?

The core component of the high and low temperature damp heat test chamber is the compressor in the refrigeration system, which plays a decisive role in the entire refrigeration system. Under normal circumstances, the number of times the compressor is started or stopped cannot be more than 6 times per hour, otherwise it is considered that the failure occurs. So what is the reason that affects the compressor not to stop? How should the user implement countermeasures to prevent the occurrence of faults?

First, the power supply voltage is too high or too low, and the problem of instability → need to wait for the power supply voltage to return to normal, then turn on the power or install an AC voltage regulator to provide a stable 380V power supply for the test box;

Second, the high and low temperature damp heat test box door seal is not strict, serious air leakage problems → the door seal should be repaired or replaced or the door seal is replaced;

Third, the over-current over-temperature protection relay's dish-shaped bimetal failure problem → replace the new over-current over-temperature protection relay;

Fourth, the condenser heat dissipation problem → the main reason for the poor heat dissipation of the condenser is the dirt on the surface of the condenser and the high temperature of the test chamber. Therefore, it is necessary to periodically clean the dirt of the condenser to improve the heat dissipation of the test chamber. condition.

Supplement: The poor heat dissipation effect of the condenser has a certain influence on the cooling capacity of the high and low temperature damp heat test chamber compressor, which will reduce the cooling capacity and cause the compressor to be overloaded, causing the working current to increase, causing the overcurrent protection relay. When the power is turned off, the compressor finally stops running. When the protection relay bimetal feels the temperature drops to the reset temperature, the contacts will reclose and the compressor will start running again, causing the compressor to continuously start and stop.

How to prevent the high and low temperature damp heat test chamber compressor from starting continuously?

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