Although the problem of the packaging scale is small, it may cause a great impact if it cannot be eliminated in time, so it is necessary to fully master the skills involved.

One of the common problems is that the pneumatic actuator of the packaging scale is stuck and the action is not in place. Analysis shows that this is caused by the high water content in the compressed air during the packaging process. In this case, it is necessary to replace the engineering molecular sieve in the packaging scale and drain its air source triplet regularly. At the same time, don't forget to add grease to the actuator regularly.

If the solenoid valve of the packaging scale fails, it will cause the PLC signal output of the equipment, the solenoid valve body to be stuck, and the actuator will not move. This also reminds users again that they must regularly check the action of the solenoid valve in the packaging scale, disassemble and clean the valve body in time and add grease.

Another problem is that when the start button of the packaging scale is pressed, the large and small material doors cannot be opened and the material cannot be fed. Analysis shows that the reason for this phenomenon is that the packaging scale has not been used for a long time, and there is still a certain amount of finished products in the hopper, which causes this phenomenon.

When encountering similar situations, the first thing is to clear the hopper of the packaging scale, and then reset the value of the instrument. In order to avoid the recurrence of this phenomenon, if the packaging scale is not used for a long time, be sure to clear the hopper in time and keep it empty.

The same is about the problem of the packaging scale material door. Although the door cannot be opened, the display of the instrument is normal at this time. After careful inspection, it was found that there was a problem with the power supply of the solenoid valve that controls the material door. Specifically, it was because the dust in the finished product of the packaging scale corroded its wiring terminals, causing poor contact of the solenoid valve power supply circuit. This type of problem can be solved by rewiring it.