Common faults and troubleshooting methods of explosion-proof small high and low temperature cycle integrated machine

Although the refrigeration system and control circuit of the explosion-proof small high-low temperature integrated machine are relatively complex, the common faults are mainly the faults of the circulation system and the circuit.
The following briefly introduces several common faults and their troubleshooting methods
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1.
After the power is turned on, the air switch of the main power supply is automatically disconnected: Remedy: Check whether the compressor of the refrigeration system is damaged.
If it is damaged, it will cause a short circuit and cause power protection
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You can replace the accessories, weld the pipeline, check the air tightness of the pipeline after pressurization, vacuumize and add refrigerant, and then start the machine to check whether it is normal
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The fault is generally caused by unstable power supply.
In this case, as long as a time-delayed regulated power supply is generally installed, the fault will not occur again
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2.
If the temperature in the box has not reached the set temperature, it has stopped working: Remedy: Although the box has not reached the set temperature, the panel display temperature has reached the set temperature
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This is because the thermistor that detects the temperature is damaged and needs to be replaced
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　　3.
The cooling effect of the explosion-proof small high-low temperature cycle integrated machine is reduced, and people feel electric shock when touching the metal part of the box: Remedy: Use a multimeter to measure the leakage, and use the segmentation method to check
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When energizing the high-temperature stage compressor alone, check whether the whole box is electrified due to the leakage of the compressor
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Statically check the compressor terminal, pay attention to observe the lead plug part of the motor winding, if there is a trace of ignition with the casing, it indicates that there is leakage
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　　The method of replacing the terminal part and the surrounding part of the casing is adopted.
After installing the body, turn it on to make it run, and check whether there is any leakage.
After the indicators of the compressor are normal, connect the pipeline, check the leakage, evacuate, and fill the appropriate amount.
The refrigerant returns the equipment to normal operation
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　　4.
Clean it once a month to ensure its cleanliness: Use a dry cloth to remove a small amount of dust on the inside and outside and accessories.
If it is too dirty, use a neutral detergent, and then rinse with water after cleaning
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However, water should not be flushed inside and outside the device, otherwise it will damage and cause malfunction
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After cleaning, perform a safety inspection to make sure that the plug is plugged in properly and not to be falsely connected; make sure that the plug is not abnormally hot; make sure that the power cord and distribution cord are not cracked and nicked
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　　5.
Excessive noise: Check whether the whole body of the equipment is stable; if it is unstable, adjust the movable screws so that the four corners are firmly supported on the ground.
If the cooling effect is poor, do not stop the machine, the cooling pipe is not hot, and the evaporator has a small airflow noise , these are due to the serious defect of refrigerant caused by slow leakage
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In the actual use of the explosion-proof small high and low temperature cycle integrated machine, many other problems will be encountered.
The solution to such problems requires continuous accumulation of experience to remove obstacles, so that the explosion-proof small high and low temperature cycle integrated machine can achieve a good working state.

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