The submersible pump does not pump water after 10 minutes of work, and then the motor is still hot

Including flow, head, pump speed, supporting power, rated current, efficiency, outlet pipe diameter and so on. The submersible pump is composed of a control cabinet, a submersible cable, a water pipe, a submersible electric pump and a submersible motor. The main purpose and scope of application of submersible pumps.

Including mine rescue, construction drainage, agricultural water drainage and irrigation, industrial water recycling, drinking water for urban and rural residents, and even emergency rescue and disaster relief. If you want to know more about it, you can consult Tianjin Aote Pump Industry Co., Ltd., thank you!

Some pumps are equipped with over-current temperature control protection in the middle, and will be disconnected when the working current increases, it is estimated that your water pump is damaged by the lack of oil in the bearing and needs to be replaced, and at the same time, it is necessary to check whether the waterproof sealing ring is good (whether there is water in the motor), note that the oil immersed in the pump is transformer oil (neutral), not other oil, otherwise it will damage the coil.

Some pumps are equipped with overflow temperature control protection in the middle, which will be disconnected when the operating current increases.

The water pump may be damaged by the lack of oil in the bearing and needs to be replaced, and at the same time, it is necessary to check whether the waterproof seal is good (whether there is water in the motor), note that the oil soaked in the water pump is transformer oil (neutral), not other oil, otherwise it will damage the coil.

The submersible pump is an important equipment for lifting water from deep wells. When in use, the whole unit is submerged to work. Groundwater is extracted to the surface, which is domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and can also be used for fountain landscape, hot water submersible pump for hot spring bathing, and can also be used for extracting groundwater from deep wells, and can also be used for rivers, reservoirs, canals and other water lifting projects.

Submersible pumpsThe power supply will stop working when the water is not out.

If the submersible pump is not water, it will generally run for a period of time, and the dry grinding of the water pump will heat up.

The thermally protected double reeds in the motor coil will automatically disconnect the power supply when heated. This is because there is an overheat protector inside the submersible pump, and your pump will automatically stop after 3-5 minutes of operation.

The submersible pump is an important equipment for lifting water and stopping ants in deep wells. When in use, the whole unit dives into the water to work, extracting groundwater to the surface, which is domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and can also be used for fountain landscape.

Working principle: There are several kinds of submersible pumps, and the wire package in the motor is oil-immersed, water-immersed and dry. You must read the manual before use, you can't make a mistake, you don't use it for a long time, you must turn the impeller before use, otherwise you will burn the bag because you don't use it for a long time.

Before turning on the pump, the suction tube and the pump must be filled with liquid.

After the pump is turned on, the impeller rotates at high speed, in which the liquid rotates along with the blades, under centrifugal force.

Under the effect, it flies away from the impeller and shoots outward, and the ejected liquid gradually slows down in the pump casing diffusion chamber, and the pressure gradually increases, and then flows out from the pump outlet and discharge pipe.

At this time, at the center of the blade, a vacuum low pressure area with neither air nor liquid is formed because the liquid is thrown around, and the liquid in the liquid cave is at atmospheric pressure on the surface of the pool.

Under the effect, it flows into the pump through the suction pipe, and the liquid is continuously sucked up from the liquid pool and continuously flows out of the discharge pipe.

Dear, hello, I am happy to answer for you, how to repair the leakage of the submersible pump due to less water and dry extraction? A: There are four scenarios:

1. The long-term operation of the submersible pump causes damage to the mechanical seal, resulting in water leakage into the coil, the submersible pump can be disassembled, and the two-sided coils can be dried with the dust of the fan cavity of the hair blowing (or exposed to the sun), one side is blown dry or exposed to the sun, and then when the other boring bridge deck coil is replaced, if the coil on that side is protruding and higher than the shell, you can use a paper shell or rag to pad it, and then blow or expose it to the sun, and replace it with a new seal and reassemble. 2. The cable sunken in the water is aging and broken, or damaged, resulting in leakage, it is necessary to check the cable and wrap the damaged position with waterproof insulating tape. There are four scenarios:

1. The long-term operation of the submersible pump causes damage to the mechanical seal, resulting in water leakage into the coil, the submersible pump can be disassembled, and the coil on both sides can be dried with a fan for hair blowing (or exposed to the sun), inspection and repair methods: 1. Check the power wire of the pump before each use to see whether the insulation part is aging, broken skin, and whether the copper core of the power cord is leaking. If you find that the power leads are damaged, if they are above the water, you can wrap them with insulating tape; If it is in water, it is best to replace the power leads.

2. The submersible pump has been in the water for a long time and the working environment is harsh, so the submersible pump in operation should regularly check the thermal insulation resistance of the motor, and generally check it after 4 hours of work. If the resistance value is lower than the megaohm, it should be shut down immediately for maintenance. This insulation check should be done once a week for safety.

Generally, after 300 hours of work, the screw plug of the water and soil sealing will be loosened for inspection. If less than 25ml of water or water-oil mixture is released, the water pump can still be used; If it exceeds 25ml, the wear of the grinding block in the monolithic sealed box should be checked. If the grinding block is damaged, it should be repaired by a manufacturer with corresponding technology and equipment.

Do not repair it by yourself, so as not to cause further damage. If the wear is severe, it should be replaced. If it is found that the lower cover of the submersible pump is cracked, the rubber sealing ring is damaged or invalid, etc., it should be replaced or repaired in time to prevent water from penetrating into the machine.

Summary. It will not burn the motor, because the water output of the reverse water pump is very small, so the work done by the motor is also small, and the current is reduced accordingly, and the motor is running at light load, so it will not burn the motor, but the water output is reduced.

It will not burn the motor, because the reverse water pump produces very little laughing water, so the motor does small work and the current is correspondingly reduced, and the motor is running in light touch and leakage, so it will not burn the motor, but the water output is reduced.

Is the three-phase electric water pump reversed on the water?

The three-phase water pump is connected to the reverse wire, which will cause the motor to reverse, so that the water pump is reversed, and the water can also be discharged, but the water output is very small. In other words, there is no energy.

Summary. Hello dear! We'll be happy to answer for you.

What is the situation when the submersible pump rotates but does not pump I have a household submersible pump, the motor is running, but it just does not go to the water, what are the reasons? Thank you A: Hello dear, there are many reasons why the submersible pump does not go to water, such as the blockage of the inlet and outlet pipelines; There is no irrigation pump, and the gas is not discharged clean during operation; The impeller of the clean water pump falls or the pump shaft is disconnected; There is a foreign object in the flow channel of the impeller of the clean water pump, which is blocked, resulting in the inability to pump water; The installation height is too high or the NPSH is insufficient.

The reasons why the submersible pump cannot pump the water are: 1The speed of the submersible pump is wrong and reversed.

2.The speed of the submersible pump is too low (such as low voltage, long cable, etc.). 3.

The submersible pump has alarm signals (such as insulation alarm, leakage alarm), which causes automatic protection power failure. 4.Leakage of water pipe of submersible pump, especially water leakage at the connection between the outlet of the pump and the water pipe.

I have a household submersible pump, the motor is running, but it just doesn't go to water, what are the reasons? Thank you.

What is the situation when a submersible pump turns but does not pump water.

What is the situation when a submersible pump turns but does not pump water.

I have a household submersible pump, the motor is running, but it just doesn't go to water, what are the reasons? Thank you.

What is the situation when a submersible pump turns but does not pump water.

Pro, reversal will increase the possibility of burning the motor, some types of submersible pumps can produce water when rotating and reversing, but the water dissipation is small and the current is large when reversing, and its reversal will damage the motor winding. In order to prevent electric shock accidents caused by electric leakage when the submersible pump is working underwater, a leakage protection switch should be installed. The submersible pump will not burn if it is reversed for a long time, but it will not be able to pump water, because the water stirred by the impeller in the filter screen will not pour into the water outlet in a clockwise direction.

The water only vortices in the net. If it is a three-phase submersible pump, you only need to change the wiring position of one of the punches, you can let the submersible pump impeller rotate in a clockwise direction, in fact, the rotation direction of the rotor of the motor, that is, the forward rotation and the reverse of the liquid, will not burn the coil of the rotor!

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Hello! We are happy to answer for you: The reversal of the submersible pump will burn the motor.

Many types of submersible pumps can produce water when they rotate forward and in reverse, but the water output is small and the current is large when reversing, and the motor winding will be damaged if the reversal time is long. The submersible pump should be injected with clean water into the pump before launching the water, and it should be started to idle two or three times to check whether the operation is normal and whether the steering meets the requirements. If the steering is reversed, swap any two phases of wiring.

The three-phase submersible pump in the front shed is reversed for a long time, and the water supply has nothing to do with the motor coil burning, the motor reversal is just a small water output, and the reasons for the submersible pump motor burnout are as follows: (1): The submersible pump runs out of phase, that is, due to other reasons such as external force disconnection, power cord quality, power supply quality, and no thermal protection for the submersible pump.

2) After the submersible pump shell is hit by external force, the shell leaks oil, and (3) the rotor bearing of the submersible pump has too long service life and serious wear, resulting in falling apart and making the rotor run inward. So the submersible pump reversal has nothing to do with burning.

The pumping height is too shallow, so the water pumped out is violent, but at this time the pump is overloaded, so it will be thermally protected. The water pump should be fine.

It should be placed at the depth required by the submersible pump (check the pump manual), which should be deeper than 2 meters. At this time, the pressure of the pump increases, the water output decreases, and the load of the motor is small, so there will be no high temperature self-protection.

The pool may be 2 meters deep, so it should be used for a short period of time and intermittently.

Analyzing the reason、、、 you say that the water is pumped out very violently, then the water pump is very good, then the dirt and impeller damage are fine.

1. It is true that the line of 300 meters is indeed very long, not to mention the voltage of 220V, if the line is so long as 380V, it can be understood. It depends on how thick the wire you use, how many square wires, your wire is long, and the electricity can't pull it, and the pump will naturally get hot. Although it was said to be easy to use before, it has this drawback.

2. Another important reason is whether your water pump is placed in the water sludge at the bottom of the water to hinder heat dissipation.

The reason is that there is not enough power, and there are many possible reasons for this, and they are talking about some common reasons, and if these reasons can be ruled out, it should be that the impeller has a card owner.

See if there's any dirt stuck inside?