What changes will happen to unmanned vending machines with insufficient refrigerant and excessive filling?

1. Failure phenomenon and reasons of insufficient refrigerant of unmanned vending machine (1) Failure phenomenon: the whole machine of unmanned vending machine has poor refrigeration effect, the air at the outlet is a bit cool, and the pressure on the high pressure side and low pressure side is found to be checked with a manifold pressure gauge. All low (when the compressor speed is 2000r/min and the ambient temperature is about 35℃, the low-pressure meter index is less than 1kg/cm2, and the high-pressure meter index is less than 10kg/cm2), and the flow of bubbles can be seen in the sight glass.　　 (2) Cause of failure: The refrigeration system of the unmanned vending machine has refrigerant leakage points, which leads to insufficient refrigerant.　　(3) Treatment method: 　　1) Use an electronic leak detector to find out the leak point and repair or replace parts.　　 2) If the parts are not replaced, only a proper amount of refrigerant can be added; if the parts are replaced, a proper amount of refrigerating oil should be added as required, and the system should be evacuated to add enough refrigerant. 2. Failure phenomenon of excessive refrigerant filling of unmanned vending machine and its treatment method (1) Failure phenomenon: the whole machine of unmanned vending machine has poor refrigeration effect, and it is found that the pressure on the high pressure side and the low pressure side are both excessive when checked with a manifold pressure gauge. High (when the compressor speed is about 2000r/min and the ambient temperature is 35℃, the pressure of the high-pressure gauge is about 19kg/cm2, the pressure of the low-pressure gauge is 2.3kg/cm2, and there is no bubble flow in the sight glass. 　　(2 ) Failure cause: Too much refrigerant in the refrigeration system can not fully exert the refrigeration capacity, resulting in poor refrigeration effect. 　　 (3) Treatment method: Connect the manifold pressure gauge to the refrigeration system of the unmanned vending machine and twist it slowly Loosen the manual valve on the low-pressure side of the manifold pressure gauge to allow the refrigerant to be discharged slowly (not from the high-pressure side, because the refrigerant from the high-pressure side will bring out a large amount of refrigerant oil) until the pressure on the high and low sides is normal, and it can be seen from the sight glass. I saw the refrigerant flowing clearly, and occasionally bubbles flowed through. 　　haloo vending machine-China's large unmanned vending machine manufacturer, providing cost-effective, a full range of vending machines, to meet customer personalized customization needs, to create a brand new Vending machine products. Adult products vending machines are now on sale for 9,999 yuan.

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