Emergency measures for power outages of unmanned vending machines

In daily use of unmanned vending machines, most of them will encounter power outages. For TVs, computers and other electrical products, power outages are harmful to them, and frequent power outages can even cause malfunctions. So does the power outage hurt the vending machine? The author will give you a detailed introduction below. At present, commercial unmanned vending machines generally have refrigeration systems, most of which are compressor-type. Such vending machines save electricity and have a fast cooling speed. After the refrigerant in the evaporator is vaporized, the low-pressure refrigerant after absorbing heat to cool and vaporizes needs to be compressed into a high-pressure, high-temperature vapor by a compressor, and then reduced to a liquid after the condenser radiates heat. This cyclic process mainly relies on the intermittent operation of the motor to achieve. Every time the motor starts, the vaporized refrigerant is lightly loaded, so it is easy to start. If the plug is unplugged while the compressor motor is running, and then the power is turned on again, the motor will face a heavy load of high-pressure refrigerant, and it will become very difficult to start, or even unable to start. At this time, the starting current through the motor will reach 10 times the normal value, and it is easy to burn the compressor motor. Since the pressure of the high-pressure refrigerant will naturally decrease after 3-5 minutes, plug in the plug again after 5 minutes to ensure that the motor will not be burned. Similarly, the power grid immediately cut off, after a while, the power will be sent to him immediately, which is very detrimental to the vending machine. Install an instant power-off protector for unmanned vending machines. The power-off protector’s input is connected to 220 volts AC power and its output is connected to the vending machine plug. When there is an instantaneous power failure, the power-off protector will automatically extend the power failure by 5-8 minutes. , To meet and protect the requirements of vending machines. For vending machines that are not equipped with instant power-off protectors, the plugs, sockets, and power leads of the vending machines should be in good contact. When there are frequent instantaneous power outages in the power grid and there are engineering and maintenance areas for the power grid and the home power system, the vending machine should be temporarily stopped. Of course, the power grid department responsible for engineering and maintenance should notify users in advance. It can be seen that power outage is not harmful to vending machines, but short-term power on after a power outage is very harmful to unmanned vending machines, so we must take precautions. Therefore, in the event of a power failure, unplug the power plug in time, confirm that the power is restored to normal, and then plug in the power for use. Emergency measures: In case of power failure, flashlights and other lighting tools should be used to first check whether the internal power distribution switch and leakage protector have tripped. When there is a burning smell, smoke, or discharge in the room, all power should be cut off immediately to avoid fire. If the fuse is blown, it should be replaced in time, but it cannot be replaced with copper, iron or aluminum wire. Emergency lighting sources such as candles and flashlights should be provided indoors and placed in a fixed position. The aging of the wire can easily cause a power outage, and it should be reported to the relevant department for replacement as soon as possible.