清洁设备的维修是和保养并进的一项工作。很多机型质保一年后会出现各种各样的问题，有些是使用的问题，有些是设备配件老化的问题，当然还有质量不过关造成的故障。CNC高压清洗机的故障有很多种，下面来讲讲CNC高压清洗机压力变小及异常启动的原因。

The maintenance of cleaning equipment is a work that goes hand in hand with maintenance. Many models will have various problems after a year of warranty. Some are problems in use, some are problems with aging equipment accessories, and of course, there are problems caused by poor quality. There are many kinds of failures of the CNC high-pressure washer. The following is the reason why the pressure of the CNC high-pressure washer decreases and starts abnormally.

一、压力变小的原因

1、 Reasons for the decrease of pressure

清洗机经常会用一段时间后压力变小的，如果您检查机器没有漏水现象，一般可以排除水封油封的问题。那就要先看下枪嘴了，因为长时间工作后的枪嘴会变大，就是水滴石穿的道理，枪嘴孔变大压力自会减小。另外，如果过滤网太脏，水过不去也会导致压力小，还有检查枪有没有堵塞的地方。这要一截截排查，看哪段有堵，疏通了就会好的。后要排查的是压力阀和单向阍，压力阀密封件磨损严重也会导致压力小。

The pressure of the cleaning machine often decreases after a period of time. If you check that the machine has no water leakage, you can generally rule out the problem of water seal oil seal. It is necessary to take a look at the muzzle first, because the muzzle will become larger after a long time of work, which is the reason why water drops through stone, and the pressure will decrease when the muzzle hole becomes larger. In addition, if the filter screen is too dirty, the pressure will be low if the water cannot pass through, and there is also a place to check whether the gun is blocked. It needs to be checked to see which section is blocked, and it will be better if it is cleared. The pressure valve and one-way knob should be checked later. Severe wear of the pressure valve seal will also lead to low pressure.

二、设备不能正常启动或启动后几秒后停机

2、 The equipment can not be started normally or shut down several seconds after starting

这种故障一般需要技术人员查验，排查方向按以下步骤进行，因为要拆卸不少部件，所以还是要人员来定论。

This kind of fault generally needs to be checked by technicians, and the troubleshooting direction should follow the following steps. Since many parts need to be disassembled, professionals should still make a conclusion.

一步：先检查进水压力，流量是否正常

Step 1: first check whether the water inlet pressure and flow are normal

二步：后检查压力开关工作是否正常，柱塞杆是否被卡住

Step 2: check whether the pressure switch works normally and whether the plunger rod is stuck

三步：查微动开关是否损坏或位置变动

Step 3: Check whether the microswitch is damaged or its position changes

四步：再检查电路板

Step 4: Recheck the circuit board

五步：查继电器

Step 5: Check the relay

六步：查电机工作状态

Six steps: check the working state of the motor

一般要由售后才能的故障属于比较大的故障，一般的小问题相信很多人可以自己动手，当然也要注意多个事项多个细节才行，关注我们senfuai.com，带您了解更为多样的事情。

Generally, faults that can only be solved by after-sales service are relatively large faults. I believe that many people can solve ordinary small problems themselves. Of course, we should pay attention to multiple issues and details. Follow us at senfuai.com to help you understand more diverse things.