What are the reasons and treatment methods for the lack of refrigerant in unmanned vending machines?

What are the reasons and treatment methods for insufficient refrigerant in unmanned vending machines? In the process of using the unmanned vending machine, there will inevitably be some problems, such as insufficient refrigerant in the unmanned vending machine, so how to solve it? Next, the author of the Dongguan unmanned vending machine will introduce to you. 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 both Low (when the compressor speed is 2000r/min and the ambient temperature is about 35°C, 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. The cause of the failure: The refrigeration system of the unmanned vending machine has refrigerant leakage points, which leads to insufficient refrigerant. 2. Treatment method: 1. Use an electronic leak detector to find out the leak and repair or replace parts. 2. If the parts have not been replaced, only an appropriate amount of refrigerant can be added; if the parts are replaced, an appropriate amount of refrigerating oil should be added as required, and sufficient refrigerant should be added after the system is vacuumed. 2. Trouble phenomenon of excessive refrigerant filling of unmanned vending machine in Dongguan and its treatment method 1. Trouble phenomenon: the overall refrigeration effect of unmanned vending machine is poor, 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°C, the pressure of the high-pressure gauge is about 19kg/cm2, the pressure of the low-pressure gauge is 2.3kg/cm2, and no bubbles can be seen in the sight glass. 2. The cause of the failure: 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 loosen the manifold slowly Pipe the manual valve on the low pressure side of the pressure gauge to slowly discharge the refrigerant (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. The refrigerant flows clearly, and occasionally there are bubbles flowing through. If you need to know more information about unmanned vending machines in Dongguan, please click to enter our company's official website to find more relevant information. Previous: How to Increase the profit cost of the vending machine?