Small combined cold storage maintenance knowledge and fault methods
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Small combined cold storage maintenance knowledge and troubleshooting methods:
- The cold storage door is not closed tightly. Please adjust the hinges on the door and the distance between the door lock and the storage body.
- The cold storage is not cooling or has poor cooling effect. Check whether the condenser of the refrigerator is dirty. Check whether there is too much frost on the evaporator in the library. Check for refrigerant leakage (coat the pipe connections with soapy water, if bubbles appear, it indicates refrigerant leakage). And ask professionals to replenish the refrigerant and deal with leaks. Check whether the cold storage door seal is intact and remove it. Check whether the refrigerator in the cold storage is working. Check whether the parameter settings of the computer controller of the cold storage are correct and readjust them. Check whether the cold storage controller is malfunctioning and replace it. Check whether there are enough gaps between items stacked in the warehouse and clear them.
- The refrigerator starts frequently or does not start for a long time, or does not stop when it is turned on for a long time, or it stops when the storage temperature is not reached. A. Check whether there is dirt on the condenser. Poor heat dissipation will cause the condensation pressure of the refrigerator to be too high. In order to protect the compressor, the machine will stop running under the action of the pressure controller. After the heat dissipation is good, press the black reset button on the pressure controller and the machine will automatically resume operation. B. The parameter setting of the controller is wrong, just reset it. C. Refrigeration is not good, please refer to fault 2. D. Temperature control failure. E. Electrical appliances are damaged.
- The cold storage distribution box did not respond after closing, but the three-phase power was normal. Please check the neutral line to see if there is 220V voltage. The components of the cold storage (various valves, controllers) have been set, and there are no parts that the user needs to adjust.
- The lighting in the warehouse is not on. Please check whether the switch is malfunctioning and whether the bulb is damaged. Cut off the power supply during inspection, and pay attention to the waterproofness of the lamp when installing the lampshade.
- When the ambient temperature is too high, after the refrigerator has been running for a period of time, the storage temperature does not reach the set value and the refrigerator stops early. This is due to the increase in ambient temperature causing the condensation pressure of the refrigerator to be too high. In order to protect the compressor, the machine stops running under the action of the pressure controller. After the heat dissipation is good, press the black reset button on the pressure controller and the machine will automatically resume operation. And check whether the water condenser dissipates heat well. Do not adjust the setting value on the pressure controller arbitrarily, otherwise the pressure controller will not be able to protect the refrigerator.
- Check the power supply: there is no power on the distribution box or the display does not show. Please check whether the special gate of the cold storage is malfunctioning. If the refrigerator starts frequently or does not start for a long time, or does not stop after being turned on for a long time, or if the storage temperature is not reached, it will stop.
- If there is abnormal noise when the machine is running, please stop it and check whether it is caused by vibration or mechanical failure. There is abnormal noise in the distribution box. This is the sound emitted by the AC contactor. It is due to the partial inflexibility of the moving parts of the contactor. Please turn off the power and press the magnet of the contactor back and forth to eliminate the noise. When the ambient temperature is too high, after the refrigerator has been running for a period of time, the storage temperature does not reach the set value and the refrigerator stops early. This is due to the increase in ambient temperature causing the condensation pressure of the refrigerator to be too high. In order to protect the compressor, the machine stops running under the action of the pressure controller. After the heat dissipation is good, press the black reset button on the pressure controller and the machine will automatically resume operation. And check whether the water condenser dissipates heat well. Do not adjust the setting value on the pressure controller arbitrarily, otherwise the pressure controller will not be able to protect the refrigerator.
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