What s going on with the Hiai self priming pump working non stop?

If the self-priming pump is turned off the faucet and does not stop working, first check whether the pipeline is leaking and check the water inlet and outlet.

If there is no problem with the water pipe, disassemble the pressure switch and twist the knob inside in the - direction (counterclockwise) 1 turn.

The working principle of this kind of product can be summarized as the impeller will suck in the liquid stored in the suction chamber and the air in the suction pipeline together, and be completely mixed in the impeller, under the action of centrifugal force, the liquid entrained gas flows to the outer edge of the scroll chamber, and a white foam belt with a certain thickness and a high-speed rotating liquid ring are formed on the outer edge of the impeller, and the gas-liquid mixture enters the gas-liquid separation chamber through the diffusion pipe.

The Hiti automatic self-priming pumps all adopt the pump body structure of axial liquid return. The pump body is composed of suction chamber, liquid storage chamber, scroll chamber, liquid return hole, gas-liquid separation chamber, etc., after the pump starts normally, the impeller will inhale the liquid stored in the suction chamber and the air in the suction pipeline together, and be completely mixed in the impeller, under the action of centrifugal force, the liquid entrained gas flows to the outer edge of the scroll chamber, and forms a white foam belt with a certain thickness and a high-speed rotating liquid ring on the outer edge of the impeller. The gas-liquid mixture enters the gas-liquid separation chamber through a diffusion tube.

At this point, due to the sudden decrease in the flow rate, the lighter gas is separated from the gas mixture, and the gas continues to rise and be discharged through the pump body spout.

The degassed liquid returns to the reservoir chamber, and enters the impeller again through the reflux hole, mixes with the gas inhaled from the suction pipeline inside the impeller again, and flows to the outer edge of the impeller under the action of the high-speed rotating impeller. Some pumps also have a cooling chamber at the bottom of the bearing body. When the bearing temperature rises more than 70 degrees due to heating, the coolant can be injected into the cooling chamber through any coolant pipe joint to circulate cooling.

The sealing mechanism inside the pump to prevent the leakage of liquid from the high-pressure area to the low-pressure area is the front and rear sealing rings, the front sealing rings are installed on the pump body, and the rear sealing rings are installed on the bearing body, when the pump is worn to a certain extent after long-term operation, and affects the efficiency and self-priming performance of the pump, it should be replaced.

Hello, dear, I've kept you waiting, and now I'll answer for you. The reasons why the Hii self-priming pump has been working non-stop and the solution to the problem Douyan Shen: 2

There is no or insufficient liquid storage in the pump body of a self-priming pump: enough for 3Damaged or worn impeller:

Replace the impeller with a new 4Suction stroke is too high or suction pipe is too long: reduce the suction stroke or shorten the pipe5

Excessive leakage of mechanical seals: repair Xiangsen or replace 6Low pressure:

How to adjust the voltage of the automatic suction pump has been circulating non-stop self-control self-priming pump 7Air leakage in the suction pipe: Eliminate air leakage in the pipe How does the automatic suction pump keep circulating non-stop, check the method within the allowable suction range.

After the water has not been absorbed, the automatic suctioning of the water pump has been circulating, and the pump will start for 4-5 minutes. Place your ear close to the air intake tube where there is a suspected air leak. Until there is no suction sound, the automatic suction pump keeps circulating, or the leak is suspected to be repaired by applying white latex.

8.The outlet piping is installed incorrectly. Too many elbows:

There are too many n-shaped tubes. It is recommended to install an automatic exhaust valve at a higher point. 9.

Three-phase motors are wired in reverse: two of them are interchangeable. 10.

The return hole of the self-priming pump is clogged and the soda ash cannot be separated: check and clean.

The failure and maintenance of the automatic self-priming pump of the day well will come out of the water one by one, and the water will not come out for a while! What's going on, the pressure switch has also been replaced.

Hello dear<>

The answer you are looking for: the failure of the Rijing automatic self-priming pump to produce water for a while and not for a while may have the following situations: 1

Water source problems: Check whether the water source is sufficient, whether the water source fluctuates or is intermittent, whether there are impurities or dirt, etc., which may cause the self-priming pump to have poor water flow or no water. 2.

Inlet line problems: Check the inlet line for leakage, blockage or damage, which may affect the entry and flow of water, resulting in poor or unwatering of the self-priming pump. 3.

Outlet line problems: Check the outlet line for leakage, blockage or damage, which may affect the discharge and flow of water, resulting in poor or no water from the self-priming pump. 4.

Internal problems of self-priming and insensitivity-insulating pumps: Check whether there are problems such as impeller or bearing wear and aging of sealing rings inside the self-priming pump, which may cause the self-priming pump to have poor water output or no water. If the pressure switch has been replaced, the above situations have been ruled out, but the problem still exists, and it may be necessary to further check the electrical aspects of the self-priming pump's motor, wires, etc., or disassemble the self-priming pump for internal inspection and repair.

It is recommended that you contact a professional self-priming pump after-sales service organization or a maintenance engineer for further inspection and maintenance.

The failure and maintenance of the automatic self-priming pump of the day well will come out of the water one by one, and the water will not come out for a while! What's going on, the pressure switch has also been replaced.

Hello, I'm glad to answer for you: It may be the following reasons that cause the failure of the Hiti automatic and self-priming pump: 1

Unstable water supply: Self-priming pumps need to have enough water to function properly. If the water source is unstable, it may cause the pump to fail to absorb water at certain times.

Make sure that the water source is stable and that there are no blockages in the water pipes. 2.Damage to the impeller inside the pump:

The impeller is the core component of the self-priming pump, and if the impeller is worn or damaged, the pump will not operate properly. Please check if the impeller needs to be replaced. 3.

Air leakage: Self-priming pumps need to create a vacuum inside the pump body to suck water. If there is an air leak in the pump body, a vacuum cannot be formed, resulting in an inability to absorb water.

Please check the pump body for air leakage, especially if the sealing ring is normal. 4.The pressure switch is set incorrectly:

The pressure switch is a key component to control the self-priming pump to switch on and off. If the pressure switch is not set correctly, it may cause the pump to not function properly at some point. Please check that the pressure switch is set correctly.

Repair suggestions:1Check that the water source is stable and rule out pipe blockages.

2.Check if the impeller needs to be replaced. 3.

Check the pump body for air leaks, especially if the seals are in good condition. 4.Check that the pressure switch is set correctly.

If the problem still cannot be solved, it is recommended to contact a professional technician for repair.