What to do if the self-priming sewage pump has no suction
The newly installed self-priming sewage pump has no suction at all. It Solar Water Pump Factory may be caused by air leakage in the water inlet pipe, or it may be that the user has made the water inlet pipe too large or too long during installation, or it may be that the user does not know how to use the self-suction pipe. Another possibility for Pump Factory self-priming sump pump motor reversal.
If it is a steel pipe, we recommend that you perform a post-welding pressure test or negative pressure test before installation and use. If it is a hose, it is recommended to add partitions at both ends, and add a tee in the middle of the exhaust pipe to connect the ball valve and the vacuum gauge. Equipped with vacuum pump for negative pressure test. After the negative pressure reaches the limit value, close the ball valve in the middle of the suction pipe and observe whether the vacuum gauge drops. If there is a drop, it must be an air leak, and you need to be careful at this time. Observe If the environment is quiet, you can hear the sound of the leak point sucking air into the pipe, which is very obvious. Find the leak and fix it.
Some users are used to dismantling the water inlet of the self-priming sewage pump when they encounter the situation that the liquid cannot be sucked up when using the ordinary self-priming sewage pump, and put their hands on the water inlet to feel whether there is suction. The sump pump had no suction at all so I thought it was a problem with the self priming sump pump. In fact, this method is wrong. What needs to be known is that this kind of ordinary self-priming centrifugal pump is not as high as the suction lift. The pumping speed of the vacuum pump is as fast as that of the vacuum pump. This kind of self-priming sewage pump can only slowly draw out the air in the pipeline from the fully enclosed pipeline until a certain negative pressure is reached before the liquid can be sucked up. After the water inlet pipe is removed, it means that the self-priming sewage pump is connected to the atmosphere. If you feel it with your hands, you will definitely not feel the suction, because the self-priming sewage pump is already in the state of sucking in a lot of air at this time, and no negative pressure has been generated.
If the self-priming sewage pump suddenly has no suction at all after being used for a period of time, please check whether the cavity and impeller of the self-priming sewage pump are blocked. Many users are concerned about self-priming sewage pumps. The internal structure of the sewage suction pump is not well understood, and I dare not disassemble the pump for inspection when it cannot absorb water. Therefore, the self-priming sewage pump manufacturer recommends that users continue to explore during use. The operator should also know how to check whether the cavity of the self-priming sewage pump is blocked. For example, if there are a lot of impurities in the impeller, there must be no suction. WQ Submersible Sewage Pump sewage pump. Open the drain bolt at the bottom to drain the water in the pump cavity, then remove the anchor bolts of the motor and separate the coupling. For the direct-coupled type, you only need to remove the bottom angle bolts of the motor, and then remove the upper ring bolts from the pump cover, and then the bearing seat and impeller can be removed together. After it is removed, you can see if there is any clogged debris on the impeller.
English
Arabic
Français
Español
Deutsch
Türkçe
Dutch
Italiano
Russian
Romaian