有漏气现象的地区，排气管并没有进气口多，造成叶轮拌和存有泵体里的液态，时长一长液态发烫，传输给泵体，造成泵体发烫。

　　组装相对高度超出泵的吸上工作能力，也会吸不上水，在不了水的情况下，依然运行泵，也会造成泵体发烫。

　　自吸泵的基本工作原理是水泵启动前先往泵体内灌满水(或泵体内本身存在水)。运行后叶轮高速运转使叶轮槽道中的流水向涡壳，这时候通道产生真空泵，使渗水逆止门开启，吸进管中的气体进到泵内，并经叶轮槽道抵达边缘。

　　当轴承发烫造成轴承人体体温升超出70度时，可在制冷室处根据随意一只冷冻液三通接头，引入冷冻液循环系统制冷。

　　泵内部结构避免液态由髙压区向低电压区渗漏的封口组织是前后左右密封环，前密封环装到泵体上，后密封环装到轴承体里，当泵经长时间运行密封环损坏到一定程度，并直接影响到泵的高效率和自然吸气特性时，应给与拆换。

　　简单来说自吸式水泵不上水而且泵体发烫的原因有下列三种：

　　1、无引水渠或引水少。自吸泵在启动前要检查泵体内是否有液态，假如无液态，非常容易导致空抽损坏机械设备水泵密封等异常情况。

　　2、自吸泵出入水盖等位置有螺丝松动的状况、进水口密封性度不足。

　　3、自吸泵内部结构有脏东西。比如野草。

　　在解决自吸泵不出水并发烫的难题的情况下，PROUMB中国版要对泵出问题的缘故逐一开展清查。快速找出难题的缘故，使自吸泵正常的的运行。防止空烧状况导致空抽损坏机械设备水泵密封毁坏自吸泵。

　　自吸泵电机出故障的解决方案：

　　1、接通电源后泵依然不工作，有很有可能是由于电源线插头或路线推动不起来、短路故障等因素导致。

　　2、不太好运行或启动时有噪声。维修时可以用小竹条转动扇叶，假如电机可正常运转，表明是运行绕阻毁坏，应改换同样容积的电阻或修复运行绕阻;若电机卡住，是电机和泵头的常见故障而致，如轴承毁坏、叶轮卡住等。

　　3、电机能运行，但转速比慢，外壳超温、有烧焦味。可能是电机短路故障导致，应拆卸电机视看危害的严重后果修补。

　　4、运行时噪音震动大。大部分是轴承毁坏或轴承与外壳的搭配不合理，需拆卸电机查验，倘若轴承毁坏应拆换;若轴承“跑外圆”，可对泵体的搭配面选用錾花解决;若轴承“跑内孔”，可对电机轴的损坏位置选用錾花解决，磨损严重的，选用先喷焊后铣削的办法修补。

　In the area with air leakage, the exhaust pipe is not as much as the air inlet, which causes the impeller to mix the liquid stored in the pump body, and the liquid is hot for a long time, which is transmitted to the pump body, causing the pump body to be hot.

　　If the assembly relative height exceeds the pump's suction capacity, the pump will not be able to suck water. If the pump is still operated without water, the pump body will be hot.

　　The basic working principle of the self-priming pump is to fill the pump body with water (or there is water in the pump body) before starting the pump. After operation, the high-speed operation of the impeller makes the water in the impeller channel flow to the volute. At this time, a vacuum pump is generated in the channel to open the water seepage check valve. The gas in the suction pipe enters the pump and reaches the edge through the impeller channel.

　　When the temperature rise of the human body of the bearing exceeds 70 ℃ due to the hot bearing, the freezing liquid circulation system can be introduced into the refrigeration room according to an optional freezing liquid tee joint.

　　The sealing organization of the internal structure of the pump to avoid liquid leakage from the high-voltage area to the low-voltage area is the front, rear, left and right sealing rings. The front sealing ring is installed on the pump body, and the rear sealing ring is installed in the bearing body. When the pump is damaged to a certain extent after long-term operation, which directly affects the pump's high efficiency and natural suction characteristics, it should be replaced.

　　Simply put, there are three reasons why the self-priming pump does not fill water and the pump body is hot:

　　1. No diversion channel or little diversion. Before starting the self-priming pump, it is necessary to check whether there is liquid in the pump body. If there is no liquid, it is very easy to cause air pumping to damage the mechanical equipment and water pump seal.

　　2. The screws at the water inlet and outlet covers of the self-priming pump are loose, and the water inlet sealing is insufficient.

　　3. There is dirt in the internal structure of the self-priming pump. Like weeds.

　　In the case of solving the problem that the self-priming pump does not produce water and is hot, we should check the causes of the pump problems one by one. Quickly find out the cause of the problem and make the self-priming pump operate normally. Prevent air pumping from damaging mechanical equipment and water pump seal from damaging self-priming pump due to air burning.

　　Solution to failure of self priming pump motor:

　　1. The pump still does not work after the power is turned on, which is likely caused by the plug or line of the power line can not be pushed, short circuit fault and other factors.

　　2. Poor operation or noise during startup. Small bamboo strips can be used to rotate the fan blades during maintenance. If the motor can operate normally, it indicates that the running winding resistance is damaged. The resistance with the same volume should be replaced or the running winding resistance should be repaired; If the motor is stuck, it is caused by common faults of the motor and pump head, such as bearing damage, impeller stuck, etc.

　　3. The motor can run, but the speed ratio is slow, the shell is overheated and has a burning smell. It may be caused by motor short-circuit fault. The motor shall be disassembled to see the serious consequences of the damage and repair.

　　4. High noise and vibration during operation. Most of the bearings are damaged or the combination of bearings and housing is unreasonable, so the motor needs to be disassembled for inspection. If the bearings are damaged, they should be replaced; If the bearing is "out of round", the matching surface of the pump body can be chiseled; If the bearing "runs through the inner hole", the damaged position of the motor shaft can be chiseled. If the bearing is seriously worn, the method of spray welding before milling shall be used for repair.