How to disassemble a submersible water jet pump. Repair of deep pumps: an overview of common malfunctions and do-it-yourself disassembly procedures
For water supply to a house or other building where there is no central water supply, use.
The device is immersed in a water source. In frequent cases, a well is used as a source.
With the help of water is sucked in and transported through pipes to consumers. As a result of the fact that the equipment is often in water and powered by the mains, it sooner or later becomes unusable.
In this case, there is a need for its repair or complete replacement. As for repairs, in frequent cases you can do it yourself.
Device
Deep pump device. (Click to enlarge) Before proceeding with repair work, it is necessary to carefully consider the device structure, the principle of operation and the main malfunctions.
This will make it easy to disassemble. For the water supply of private houses, centrifugal and vibration deep pumps are often used.
The first option is often used in wells, while vibration units are used in wells.
Deep centrifugal unit consists of the following elements:
- housing, for the manufacture of which high-strength material is used;
- an electric motor that ensures the operation of the unit;
- an impeller that creates centrifugal force that pushes water into the pipeline;
- bearings;
- cooling system and o-rings.
As for vibration pumps, they consist of the following structural elements:
- body made of the same durable material;
- electric motor;
- working piston;
- high power electromagnet;
- shock absorbers and other small parts.
Each of these units has its own principle of operation. Having information about the structure and principle of operation of the equipment, if necessary, it can be easily disassembled and repaired. Of course, we should not forget about the build quality. Often this parameter is of great importance in the operation and life of the equipment.
Specialist note: It should be noted that vibration pumps are characterized by low cost and reliability in operation and are capable of pumping water of any quality.
Typical breakdowns
Disassembled submersible pump Often the failure of the unit occurs as a result of mechanical defects.
No exception is a malfunction in the control system of the device. Defects, in turn, can occur in two cases.
First of all, this can be the result of poor-quality assembly of the unit.
In this case, do-it-yourself repairs are not worth it. Often, assembly defects are identified when the unit is first started. And this means that it can be immediately replaced with another pump under the warranty card.
In addition, mechanical defects also occur as a result of frequent use of the pump. So, it can be wear or destruction of some structural element.
As a result, the following malfunctions may occur:
- Complete failure in operation or water supply under pressure that does not match the capacity of the deep pump. A common cause of this is impeller wear.
- The appearance of large vibration during operation of the pump. The failure often occurs as a result of loosening of the connecting element, as well as wear of the bearings.
- Pump jamming. Occurs when a third-party object enters the unit or an increase in water temperature.
- A common problem is a leak in the equipment or at the junction of the pipe. The main reason is the wear of the sealing ring.
Internal leakage is determined by the presence of rust. Check the pump for such a malfunction once every two months. If necessary, repair the damage immediately. Otherwise, it may cause a complete replacement of the unit.
In addition to this, other problems may occur. To carry out the elimination, it is necessary to know exactly the cause of their occurrence. Otherwise, you can just lose time or even more harm. Therefore, in such cases, it is recommended to seek professional help.
How to disassemble
Clogging of the deep pump Pump repair is a very complex and responsible process.
All work is carried out in a certain sequence:
- First of all, the unit is removed from the well or well. In this case, you need to turn off the power supply.
If we are talking about a well, then physical strength will be required to lift the pump. Therefore, it is worth enlisting the help of friends or neighbors.
- When the pump is raised, you need to disconnect the pipes through which the water is transported.
- At the next stage, the unit is disassembled and its elements are inspected.
- All worn and damaged parts are replaced.
- After that, the pump is assembled and tested in operation. This must be done before putting it back into the well. During the repair, the necessary parts are also lubricated and cleaned from contamination.
Advice from practice: when choosing spare parts, it is worth using the help of specialists.
Control system problems
Damage to the power cable Failure of the deep pump is associated not only with mechanical defects, but also with the occurrence of malfunctions in the control system.
So, the reasons for this may be the operation of the unit out of water, damage to the power cable and motor breakdown.
To prevent the unit from operating out of water, a special sensor is installed on it. When the water in the well or well drops below the minimum level, the sensor will give a signal and the pump will turn off. If this happens, then only service specialists can repair the pump.
Submersible pump "Vodomet" - this unit is on a par with the well-known "Kid" and "Brook" - brands whose name has been transformed into a proper name, denoting a whole niche market for small and simple pumps for autonomous wells.
At the same time, all the above-mentioned units attract the consumer not only with a moderate price and noticeable performance, but also with the ease with which repairs are carried out that restore the pumps to working capacity.
Therefore, in this article we will consider the repair of the Gileks Vodomet pump using the model 60/52 as an example. In a word, we invite you to evaluate the simplicity of the design solution of this unit, and get acquainted with the secrets of its repair. Perhaps this will determine your preferences when choosing a pump for an autonomous water supply.
Borehole pumps "Vodomet": an overview of the typical design
The base of any pump is the casing. And this part of the "Vodomet" unit is made in the form of a metal cylinder. It is in it that the engine is mounted, on the shaft of which the impeller is put on.
Moreover, the impeller is separated from the engine compartment by a special insert through which the shaft passes. In turn, the impeller itself consists of a repeating set of disks, alternating in the following order:
1 - The first white disk with external blades, 2 - The first black washer, the same diameter as the white disk, 3 - The first "glass" with internal blades, 4 - The second white disk with blades, 5 - The second washer, 6 - The third white disk with blades, 7 - Second "glass" with internal blades, 8 - Third washer, 9 - Fourth disk with external blades, 10 - Third "glass" with internal blades, 11 - Fourth washer, 12 - Fourth "glass" with internal blades, 13 - Fifth washer, 14 - White plug with perforation in the center, 15 -
Black cap with a round hole in the center, 16 - Short cylinder with mesh at the bottom - filter element
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This is how any Water Cannon pump works. That is, a similar alternation of discs, washers and "glasses" is present in models designed to work in a 5-meter water column (series 60/32, 150/30), and in devices submerged up to 20-40 meters (series 60 /52, 150/45). When assembling, a small anti-friction washer (blue and white) is installed between each element. All other elements - and washers, and disks, and "glasses" - are made of polyamide.
This pump is designed for vertical installation in the clean water column, which is quite typical for all submersible units of the Vodomet brand. Moreover, its design practically does not differ from similar products from another model range of this brand. Therefore, the repair procedure applicable to the model 60/52 can be extended to other pumps from.
Repair of the pump "Vodomet" 60/52: how it's done
Submersible pumps fail for three reasons:
- Firstly, in case of silting of the impeller.
- Secondly, in the event of a break in the electrical cable.
- Thirdly, in case of failure of the components of the engine compartment (stator or rotor).
Moreover, when diagnosing a problem, one should be guided by the following rules:
- If during the test run the shaft rotates at the pump extracted from the well, then the impeller is the problem area. Clean it of sludge and the pump can be assembled in the reverse order.
- If the pump does not even turn on, then you need to check (ring the tester) the power cable. If there is voltage at the terminals of the engine compartment, then the cable is intact. Well, if not, then it will have to be replaced with a new one. Finding a break and fixing it with twisting or soldering is far from the best idea. After all, the tightness of the cable will still be violated.
- If everything is in order with the cable, then the problem is in the engine. And the pump will have to be disassembled to the engine compartment, to extract and rewind the stator or rotor.
And in each case, the repair of the unit begins with a complete disassembly.
- A short cylinder with a perforated bottom is screwed from the end of the pump - a filter element that protects the impeller from silting.
- Next, all washers, "glasses" and disks are removed from the pump motor shaft, in the reverse order described above (in the overview of the impeller design). Moreover, all the numerous elements should be laid on a flat area of the workbench in the order of extraction from the body. After all, the impeller consists of 16 parts. And that's not counting the same number of anti-friction washers.
- Further disassembly to the level of the engine compartment begins with the removal of the engine retaining ring that closes its cover. To do this, by hitting the top fitting with a mallet, move the engine down, then, pulling the cord, return it to its place. Moreover, after all the manipulations, the sealing ring will remain in the “shifted” position. Next, the retaining ring is displaced by blowing with a screwdriver into the part closest to the body. The stopper will warp, after which it can be removed.
- After that, you need to disconnect the wires by opening the cover of the corresponding compartment, and, using a screwdriver and a mallet, “knock out” the engine from the case.
After being removed from the housing, the impeller elements are washed and dried, and the engine is sent for diagnostics and repair to a specialized workshop. After cleaning the impeller and updating the engine, the Vodomet 60/52 pump is assembled in the reverse order to that described above.
AT recent times pumps for wells became popular. As soon as they appeared on the market, they were in great demand all over the world.
Even the most common pump models often fail. The pumps will have to be repaired as soon as possible. If no action is taken, then without water to the dachas, or country house You will have to sit for a very long time. For example, let's take pumps from Gileks.
1 Most common pump failures
We all know that a pump is an ordinary device, a mechanism that does not differ in any complexity, but this judgment is only at first glance.
The pump consists of an engine, an impeller, and also in the middle of the pump there is a shaft, seals and all this closes the housing. The above parts are constantly in operation, which leads to gradual wear.
That is why it is necessary to occasionally repair the pump, since the device is constantly in operation and is in the water. Yes, not all pumps work in water, such as Gilex surface pumps, which work on the surface at the same time as hydraulic accumulators, which can also be installed separately on the surface.
But, Gileks surface pumps also need repairs. Let's take, for example, such a well-known manufacturer as. This device is in the water (well or well) constantly. Some of us do not even take it out for the winter, and this is a gross mistake.
The Gileks Water Jet pump has a lightweight design, and it is really easy to repair it yourself. But if you are not an expert in this, you will not only not repair it, but you can even damage the pump even worse. But if the situation is such that there is a slight breakdown of the pump on the face, then you can do it yourself.
The main thing who is going to repair submersible and surface pumps should understand their design, as well as how they are connected correctly. The most famous pump failures, which we will discuss separately in this article.
Check pumps are very easy and affordable.
- For example, if the pump is connected to 220 W and it does not respond, then there is a breakdown with the contacts or with the supply wire. Solving this problem is easy, you just need to have a tester. They check the contacts of the pump. If there is no signal during the test, then the contact is damaged.
- You should also pay attention to the contact, it may become damp or change color. If, when connecting 220 W, all mechanisms do not react, then the main cable is broken. This is the most common failure in water pumps. Their downside is that their cable is very poorly protected, and is constantly in limbo.
- If during operation you notice a hum in the engine, uneven operation is felt, clicks are heard, this indicates that there are problems with the engine and the pump impeller. To finally understand this, you must first disassemble the pump and inspect it. It may be that the pump impeller simply cracked and the bearings flew out or failed. These are the most painful pump problems.
- If you see that the engine does not work at all, then the problem is in it. And in this case, you will not be able to fix it with your own hands. Especially such a breakdown occurs in submersible models. If we disassemble a specific model, let's take the Vodomet 50/25 pump engine as an example, then it is not repaired or disassembled at all. In them, the winding can most often burn out. But replacing the winding in such models is a moot point. It is better if you have such a breakdown, replace the engine with a new one, as Gilex manufacturers are constantly replenishing the range of spare parts.
If we talk about Gilex Jumbo, then in such surface pumps the engine often burns out and quickly wears out. And all this happens from the dry running of the pump. Surface pumps are more likely to break down from dry running than, for example, submersible units.
Let's get back to the Gilex Jumbo pump. In it, breakdowns such as poor water pressure in the system occur. The main reasons for this are: the pressure switch does not work and the accumulator does not work, as well as general problems of the pump as a whole.
First, let's analyze the first breakdown, it is the relay that goes astray.
Its performance is checked easily and simply, and if you notice that everything is not so smooth with it, it is very easy to set up. If we talk about hydraulic accumulators, then there are the following breakdowns:
Rupture of the air membrane. And we can only check this when we disassemble the tank. If there is a large amount of air in the membrane, then the system is completely unbalanced, as a result of which the pressure drops.
The pump itself can also react badly, but this happens very rarely. Most often, working elements come out of the pump, and the pump simply does not cope with its task of pumping water. And if the working elements of the pump come out, during operation you notice a hum, the impeller does not rotate well. If there are other signs of a breakdown, then most likely the relay or hydraulic accumulator has failed.
2 We repair the pump depending on the manufacturer's model
The time has come to consider the actual pumping equipment. Here it is necessary to distinguish between the repair of a submersible pump and the repair of a surface unit. First, consider the common water jet pump model. This water cannon pump, which belongs to the submersible model, is available in several positions and configurations.
For example, configurations such as 40/50, 55/35,110/110. The main difference between them is the size and equipment. As a result, they have the same design. You need to start repairing the Water Jet pump by disassembling it. To do this, the Vodomet pump is removed from the well, it must be turned off from the network and only dry it needs to be repaired.
Disassembly steps:
- As mentioned above, dry the pump, then carefully remove the housing and cover on the pump.
- Next, using a vice, remove the water intake mechanisms. Everything is done carefully, since the body of the unit is hollow.
- After that, you need to disassemble the pumping part, and if you find a breakdown there, then it will not be difficult for you to fix it at that stage with your own hands. If not, then move on to the engine.
- In order to remove the engine, you need to carefully remove the snap ring, since it is plastic, and it will not be damaged.
- Then, as soon as we got to the engine, we gradually pull out the wires, inspect them for burnt wires.
- After that, if everything is fine, you need to pour non-toxic oil into the engine and assemble the unit in the same order as it was disassembled.
Remember!! The oil in the pump engine must be filled with harmless oil.
For these cases, glycerin is suitable, it does not pollute the water. And after that, in disassembled form, it is very easy to troubleshoot the pump with your own hands. If you notice broken contacts, then it is better to solder them, or wipe them with an alcohol solution. And if the contacts are broken at all, then it is better to replace them.
If the problem is in the engine, then it is better not to repair it yourself, but to give it to a specialist who can give you a guarantee for its work in the future. As a result, we see that repairing the Water Jet pump is easy and will not be difficult for you. And most importantly, it does not matter what type of Water Cannon you have chosen, since the principle of spare parts and the device are almost the same.
According to a different principle of repair, a surface pump of the Gileks Jumbo type operates. Here it is much more complicated, and it is necessary to solve specifically the breakdown. If your pump is malfunctioning, then you definitely need to repair it, remove the housing and check all systems one by one.
Stages of work:
- First, you need to turn off the pump and accumulator from electricity 220 watts.
- Then drain the liquid that remains in the hose.
- We remove the housing by unscrewing the bolts.
- Be sure to remove all moving parts of the housing, and only then disassemble the pump chamber.
- After that, remove the impeller and seals.
- Carefully pull out the engine.
- Now let's look at the wires. And after that, if everything is fine, we assemble the pump in the same sequence as we disassembled it.
We remind you!!! that the problem with the breakdown of pumps can be at any stage of disassembly.
The advantage of surface pumps is that their body is not solid and can be removed in parts. Details in it are turned off and not removed sequentially, which is a plus. Did you disassemble the pump and see a problem with the impeller and consumables? They are not repaired, but completely replaced with new ones.
If you decide to look at the contacts, it is better to get there through the engine's camera. To disassemble the accumulator, the hose is first disconnected, and then the plates are removed by unscrewing. Pull out the membrane and inspect it.
It is better not to repair the relay with your own hands, as it is very vulnerable and can be easily damaged during repairs.
2.1 Do-it-yourself pump repair Gileks Water Jet - video