1、 Loose connection of conveying pipeline

输送管道连接采用活动卡箍固定，经过一段时间的使用后，管道卡箍可能会松动，影响上料机正常的工作。应排查从吸料端到设备之间所有的活动卡箍，发现有松动接口后重新拧紧。

The connection of the conveying pipeline is fixed with movable clamps. After a period of use, the clamps may become loose and affect the normal operation of the feeding machine. All movable clamps from the suction end to the equipment should be inspected, and any loose interfaces should be re tightened.

二、管道内的剩料过多

2、 Excessive residual material in the pipeline

管道的剩料一般为上一次上料没有清理完的物料，这些物料静置后会产生架桥容易堵塞管道。当物料通过无尘投料站投料完成后，等待物料完全抽干净以后，再关闭真空上料机控制开关。

The remaining materials in the pipeline are generally materials that were not cleaned up in the previous feeding, and these materials may cause bridging and easily block the pipeline after being left standing. After the material is fed through the dust-free feeding station, wait for the material to be completely drained before turning off the control switch of the vacuum feeding machine.

三、真空上料机过淲装置堵塞

3、 Blockage of the vacuum feeding machine overload device

真空上料机不上料时，应排查设备的过滤系统是否被堵塞。发现堵塞时应及时分析原因，堵塞的大部分因素是粉料太细，过滤系统不能满足粉料过滤要求，更换合适的过滤器即可。

When the vacuum feeding machine is not feeding, the filtration system of the equipment should be checked for blockage. When blockages are found, the cause should be analyzed in a timely manner. Most of the factors causing blockages are that the powder is too fine and the filtration system cannot meet the requirements for powder filtration. Simply replace the appropriate filter.

四、反吹自清理系统故障

4、 Fault in the backwash self-cleaning system

反吹自清理系统在设备下料时工作，它的作用是设备下料时将过滤装置进行自清理，如果发现不工作，排查系统硬件是否损坏并及时更换即可。

The backwash self-cleaning system works during equipment unloading. Its function is to self-cleaning the filtering device during equipment unloading. If it is found to be not working, the system hardware should be checked for damage and replaced in a timely manner.

五、真空上料机的真空源压力不足

5、 Insufficient vacuum source pressure of vacuum feeding machine

真空源压力不足原因是一台真空泵供多台设备使用，而上料机的压力达不到，就会产生不上料的情况，此时应等待其它设备工作完成，或者启动多台真空泵同时工作，达到指定的真空压力。

The reason for insufficient vacuum source pressure is that one vacuum pump is used by multiple devices, and if the pressure of the feeding machine cannot be reached, it will cause a situation of not feeding. At this time, it is necessary to wait for the completion of other equipment work, or start multiple vacuum pumps to work simultaneously to reach the specified vacuum pressure.